Blog

According to the Story County Wind Farm brochure (attached to this wiki), 1.5MW GE wind turbines are used.

According to the GE WWW site:

http://www.ge-energy.com/products_and_services/products/wind_turbines/ge_1.5_77_wind_turbine.jsp

these turbines have a hub height of 80m and blade lengths of 37m

I note that Google Earth now has an image of the CWEX11 site that shows our paths to the sensors (and thus our locations).  This image was taken 9/23/12, so we had left the site (and the nearby fields had been harvested).

To attempt to debug the 2Hz noise seen on the kryptons during this project, I have set up part of stn #4 in the lab:

DSM #5

CSAT #0671

GPS for timekeeping

First, I used KH2O #1133 and saw no noise on an output voltage of about 0.21V.  I blocked the optical path and saw no noise at 0.00V.

Next, I swapped in KH2O #1394 (the actual krypton used at stn #4.  It now outputs 1.43V, but also had no noise.  Also no noise when blocked and reading 0.00V.

Next, I added the cradlepoint with a modem back into the DSM.  The modem wasn't connected (due to placement in the room), so no data transfer was occurring.  Still no noise.

That's it for now.  Next steps would be:

- Move to get cell coverage

- Add 2 TRHs

- Add barometer & prop

- Add solar panels

----------------------------

Round 2, 9/19:

Tripod set up outside near basketball court (mostly the same)

- DSM5, CSAT0671, back to KH2O1133 (since I didn't want to risk putting 1394 outside before post-cals), GPS

- Modem on using Cradlepoint, transmitting UDP data to rt-server.eol (sp?)

- Power from solar panels

Ambient kh2ov = 0.34V.  Thought I saw some noise during one "kv", but couldn't replicate it.  Bagged detector, so 0.00V and no noise.

Final step is to add the remaining 4 sensors (2xTRH, prop, baro).

-------------------------

Round 3, 9/28:

Added TRH, Baro, Prop, Power mote to tripod set-up.  All the same S/N as used at #4, except possibly not mote (or TRH fan)

- Some jumping, but doesn't analyze as clear 2Hz with ambient voltage ~0.38V

- Put bag back on, get 0.00V, no noise evident (spectra show a slight bump at 5Hz -- probably A/D conversion artifact)

- Replaced bag by bit of wire mesh, reduced voltage to 0.18V.  Also changed mote power switch, which might have been off.

Not seeing noise here either (or data from the mote, for that matter).

The last step is to add the 2nd TRH -- not yet done.  I'll also take data through tonight, to look at the signal when turbulence levels are smaller (but I don't expect the noise to appear).

-----------------------

Interlude: Look at spectra from old data:

CWEX11:

Looking at 2 days (1&2 Aug) of spectra, see that noise amplitude is pretty constant, freq changes a small amount (~2.2 to 2.4 Hz), ncar2 is 2 orders of magnitude (in power -- 1 order of mag in amplitude) lower than ncar4.  All of these are quite consistent.

Looking at 26 Jul (when I gave the tour), I recall that all turbines were stopped due to calm winds when I arrived (~13:00).  During this period, the amplitude of the noise is about a factor of 2 smaller, though at the same frequency.  Other hours of this day have noise levels similar to 1&2 Aug, though I have no information as to whether the turbines were running then.

Also, look at snapshots of data from other projects:

TREX: Don't see 2Hz noise for a case when V~0.6V at night (though white digitizing noise is obvious).  Noise level is much lower than seen in CWEX (so CWEX noise would show up).

dpar(start="2006 mar 30 04:00",lenmin=30)
iod = prep("kh2oV.30m#3")

PCAPS: Also no 2Hz noise for a case with V~0.6V at night.  Similar comments as above.

dpar(start="2011 jan 4 4:30",lenmin=30)
iod = prep("kh2oV#7")

------------------------

SUMMARY:

1. It appears that this problem was due to RF environmental factors unique to CWEX11.  It is not physical since we do not see noise on the Li7500 H2O signal or any other scalar. 

2. We have no way of detecting whether noise occurred on the lower-rate analog channels. 

3. Since we can fix the CWEX11 data in software (FFT; filter spectra; inverse FFT), we do not need to know the source.

4. We are not sure that we will ever use the same serializers (or kryptons) again, but we should look for this noise again in any case.

5. IF we wanted to pursue this further, we could take the station to the turbine test station at NREL, though there still may not be exactly the same RF environment.

6. We should keep track of the frequency and amplitude of the noise while correcting the CWEX11 data.  We also may get turbine operating parameter data (rotation speed?) from the wind farm operator.  This log entry may be revisited with a check of whether these values are correlated.

------------------------

Postlude:

Contrary to summary comment 2 above, I now note that noise is apparent in the PTB220's pressure signal as well.  This occurs all the time at stn2 and some of the time at stns 3&4.  Note that it is impossible to detect that it is 2Hz noise, since the sampling rate is 1sps.  Also note that this stn 2/4 behavior is opposite that seen in kh2oV, where the noise was continuous and large at stn 4 and much less and variable at stn 2.  The bottom-line conclusion probably doesn't change -- the source likely is RF and the effect on a sensor depends on some nuance of mounting and cabling.

Unfortunately, this "noise" appears to preclude the use of pressure to identify the existence of turbine wakes at the surface, though it might be possible to pull out a signal...

------------------------

Addendum:

During CentNet tests at Marshal during the first half of 2012, the 2 Hz noise gradually appeared (as the krypton signal response declined?), to the point that it is quite obvious in the June-August data.  Thus, I don't think we can blame the turbines after all...

TWH has calculated the sonic tilt angles and w offsets for periods beginning with raising the mast until the mast was next lowered.

In some cases for stations 2 and 4, these periods were only for a few days because of servicing the krypton hygrometers, so I have combined those short periods with longer periods preceding or following the short periods.

Station 1

Station 2

Station 3

Station 4

Tear down notes:

Aug 16th 2011

tear down went exceptionally well, and all 4 ISFS flux stations were removed in one day. Sensor numbers are as follows:

Sta # 4

DSM  #5 (turned off at 9:12 AM local time)

RMY          318

SHT 10 m   015

Csat           0671

Kh2o         1394

SHT 2m      026

pres         PTB200-A s/n  491125

Sta #3

DSM #4 (turned off at 11:13)

RMY   ENG 002

SHT 10m 019

Licor     0813

Csat     0539

SHT 2m 018

pres  PTB 220  S0610002

Sta #2

DSM #3 (turned off at 2:11)

RMY     00319

SHT 10 m   025

Csat     1119

Kh2o     1525 HAO

SHT 2m   022

pres    PTB 220   NCAR 0003

Sta #1

DSM #2 (turned off at 4:47)

SHT 10m 017

RMY   0315

Csat 0537

Licor 1167

SHT 2m 021

pres   PTB 220    G0455001 (NCAR 0002)

August 16
Dan Rajewski (in Ames)

Summary: Stations 1-4 operational through 9:00 CDT, CWEX break down begins starting at Site 4 and moving from north to south
Kurt, Rudy, Gene, and Dan participated in the bulk of the NCAR take down; Kris, Jimmy, and Arin worked on the ISU towers; Russ helped Matt and Mike with the CU take down of the wind cube equipment  
NCAR and CU equipment removed from the field by 18:00, ISU equipment removal was completed by 12:00 on August 17
Night: mostly cloudy with SE to ESE winds, morning: SE winds veering to S light sprinkles in the morning before crew arrival
Gusty winds from a decaying thunderstorm complex from the SW until early afternoon, light SE winds by early evening

Vdsm: 13.4-13.7 V during day, down to 12.4 at night
P: ok, pressure mostly steady maybe rising 1mb through the entire take-down period
T.2m: stn 1 is 1.0 degrees C cooler than other sites from 21:00-0:30; close agreement rest of the night through morning
RH.2m: before midnight: stn1 & 4 about 5%RH higher than stns 2-3; after midnight stn 4 about 5%RH higher than other sites
H2O.2m: night: stn 4 about 0.5 g/m^3 greater vapor than other sites until the end of collection at stn 4
Wetness: slight dew formation from 21:30-22:00, sensor dry until 2:30, wet from 2:30-7:30, another brief shower from 9:30, sensor dry by 10:30

T.10m: ok, not as clear of separation of site 1 vs. other sites as in T.2m; good morning agreement
RH.10m: ok, stn 1 about 5-7%RH higher than other sites before midnight, then after midnight stn 2 about 5-7%RH lower than other other sites
H2O.10m ok, stn 2 about 0.7-1.0 g/m^3 drier than other sites much of the night and early morning; agreement with stn 1 by 13:00
Spd.10m: ok, all stns within 0.5 m/s of each other into the night and morning, peak wind speed of near 14 m/s recorded at Sites 1-3  around 10:40
Dir.10m: ok, from the SSE in late evening backing to ESE during before sunrise, then veering to south by the completion of the experiment at stn 4

T.10m - T.2m: night: stns temp differences within 10 to 2 m are within +/- 0.5 degrees C of each other
H2O.10m - H2O.2m: night: several periods where stns 2 & 4 are 0.5-0.7 g/m^3 drier at 10m vs. 2m than for stns 1 & 3; stn 2 is a bit drier at 10 m vs. 2m as compared to stn 1 in the early afternoon
spd.4.5m: ok, similar for Spd.10m
dir.4.5m: ok, see comments for Dir.10m, a bit more easterly flow during the late night hours as compared to the Dir.10m
w.4.5m: ok, night: least positive or largest negative velocity for stn 3 & 4 (-0.01 m/s), stns 1 least amount of fluctuation (around 0.01-0.02 m/s) stn 2 highest positive velocities (0.02-0.05 m/s)
tc.4.5m: ok, similar to T.2m, also stn 1 a bit warmer than other sites from 3:30-6:00
ldiag: ok, a few 100 missing samples at stns 2 & 4 around 19:00-20:00

kh2oV: ok, between 150-380 mV for night to day behavior
kh2o: night: stn 4 around about 2 g/m^3 wetter than stn 2 and about 4-6 g/m^3 more moist than stns 1 & 3 for the overnight and daytime;
h2o(licor): ok, stn 1 about 0.5 g/m^3 drier than stn 3 from much of the night; partial agreement by 10:00
lidiag (licor): ok, few spikes at both sites during light showers/sprinkles around 9:00
TKE.4.5m: ok, stn 1 lower TKE than other sites from 21:00-0:00 and from 6:30-8:00, close daytime agreement, peak value during wind burst of near 3.75 m^2/s^2 at 10:45
w'w': ok, similar to TKE.4.5m, also seen in u'u' and v'v'
u*: ok,  nighttime: similar to TKE.4.5m, v'w' also similar more-so than u'w'
w'tc': ok, night: less negative flux at stn1 until 1:00, stn 2 less flux <0 from 3:00-5:00; close daytime agreement
tc'tc': ok, stn 1 lowest variance first part of night then from 1:00-2:30 stn 1 a bit higher than other sites
w'h2o': ok, night: all sites close most of night, (flux > 0) stn 3 most flux, stn 1 least flux for 1-2 hr periods
h2o'h2o' (licor): ok, close agreement for nighttime; stns 1-3 about 0.2 (g/m^3)^2 greater variance than at stn 2 & 4 in the mid afternoon
kh2o'kh2o': night: stns 1 and 2  bit lower variance than stn 3-4 from 20:30-23:00
w'co2': ok, night: very short periods with one site a bit higher positive flux than the other but not a consistent pattern
co2'co2': ok, slightly higher variance at stn 1 vs. stn 3 for a few 2hr periods also 1hr periods with inverse pattern

August 15
Dan Rajewski (in Ames)

Summary: Stations 1-4 operational, no ISFS staff on site, 
mostly clear daytime, some high clouds
Nighttime winds veering from E to SE, afternoon from the SSE to SE by the early evening
Vdsm: 13.4-13.7 V during day, down to 12.4 at night
P: ok, pressure falling from 976 to 974 mb during the period
T.2m: stn 1 is 0.7-1.0 degrees C cooler than other sites from 2:00-6:30; close daytime agreement though slightly cooler at stns 1-2 vs. 3-4 in the late morning-early afternoon
RH.2m: stns 1-3 about 5-7%RH lower than stn 4 during the night; daytime: stn4 a few %RH higher than other sites
H2O.2m: night: stn 4 about 0.7-1.0 g/m^3 greater vapor than stns 1-3 from 20:00-2:00 and stn 1 less than other sites by 0.7 g/m^3 from 3:00-7:00; stn4 0.5 g/m^3 more moist than other sites during the daytime hours
Wetness: dew formation from 21:30-0:00 and from 3:00-7:15, sensor dry by 8:30

T.10m: ok, not as clear of separation of site 1 vs. other sites as in T.2m; good daytime agreement
RH.10m: ok, stn 2 about 5-7%RH lower than stn1 and sites 3-4 are a few%RH lower than stn 1 from 3:00-7:30
H2O.10m ok, stn 2 about 0.7 g/m^3 drier than other sites much of the night and early morning; stn 4 less vapor than the other sites for much of late morning to late afternoon
Spd.10m: ok, stns 1-2 about 0.7-1.0 m/s  lower speed than other sites from 23:30-2:00, stn 2 higher than stn 1 from 3:00-5:00, stn 1 a bit lower than other sites from 6:00-7:30
Dir.10m: ok, from the ESE to SSE during the overnight, steady SSE to S through early afternoon, backing to SE by early evening

T.10m - T.2m: night: stns 2-3 about 0.5 degrees C warmer at 10 m vs. 2 m than for stns 1 & 4 from 2:30-7:30; daytime: stns 3-4 a bit warmer at 2m vs. 10m than other site in the late morning through mid afternoon
H2O.10m - H2O.2m: night: several periods where stns 2 & 4 are 0.7-1.0 g/m^3 drier at 10m vs. 2m than for stns 1 & 3; daytime: stn 4 about 1.5 g/m^3 drier at 2m v.s 10m from 9:30 to the end of the period
spd.4.5m: ok, similar for Spd.10m
dir.4.5m: ok, see comments for Dir.10m
w.4.5m: ok, night: least positive or largest negative velocity for stn 4, stns 1& 3 have most upward velocity
tc.4.5m: ok, similar to T.2m
ldiag: ok

kh2oV: ok, between 150-400 mV for night to day behavior
kh2o: night: stn 4 around about 2 g/m^3 wetter than stn 2 and about 4-6 g/m^3 more moist than stns 1 & 3 for the overnight and daytime;
h2o(licor): ok, stn 1 about 0.5-1.0 g/m^3 drier than stn 3 from much of the night; morning agreement by 9:30
lidiag (licor): ok
TKE.4.5m: ok, stn 2 a bit lower TKE than other sites from 22:00-2:30, stn1 about 0.15 units less TKE than other sites from 3:00 to 7:00; close daytime agreement, a bit greater peak TKE at stns 1-2 vs. Sites 3-4
w'w': ok, similar to TKE.4.5m, also seen in u'u' and v'v'
u*: ok,  nighttime: similar to TKE.4.5m, v'w' also similar more-so than u'w'
w'tc': ok, night: less negative flux at stn2 until 1:00, stn 1 less flux <0 from 3:00-7:30; close daytime agreement
tc'tc': ok, similar to w'tc' with Stn 1 having highest variance from 21:30-2:30; daytime a bit lower peak variance at stn2 vs. other sites
w'h2o': ok, night: all sites close most of night, some less positive flux at stn 1 & 4 vs. other sites from 3:00-7:00; stns 2 & 4 lower positive flux by 0.04 g/m^2/s during the late morning-early afternoon
h2o'h2o' (licor): ok, close agreement for nighttime; stns 1-3 about 0.2 (g/m^3)^2 greater variance than at stn 2 & 4 in the mid afternoon
kh2o'kh2o': night: acceptable readings during the night; daytime less peak flux than those of licors
w'co2': ok, night: up through 2:00 slightly higher flux at stn 1 vs. stn 3 then from 3:00-7:00 slightly higher flux at stn 3 vs. stn 1; close daytime agreement
co2'co2': ok, less variance at stn 3 vs. stn 1 for most of the night from 23:00-6:30; similar daytime peak variance but slightly higher at stn 3 vs. stn 1

August 14
Dan Rajewski (in Ames)

Summary: Stations 1-4 operational, no ISFS staff on site, 
mostly clear overnight and daytime, some high clouds
winds light and variable starting from N in the overnight and veering through to the S by early evening

Vdsm: 13.4-13.7 V during day, down to 12.4 at night
P: ok, pressure rising 3 mb overnight through 10:30, falling 3mb by the end of the period
T.2m: brief periods where stn 1 is 0.7-1.0 degrees C warmer than other sites and also periods where stn 2 is 0.5-0.7 degrees C cooler stns 3-4; close daytime agreement though slightly cooler at stns 1-2 vs. 3-4 in the mid morning
RH.2m: stns 1&3 about 5%RH lower than stn 4 during the night; stn2 also a few%RH lower than stn 4; daytime: stn4 a few %RH higher than other sites, stn3 1-2%RH lower than stns 1-2
H2O.2m: night: stn 4 about 0.5-0.7 g/m^3 greater vapor than stns 2-3 from 23:00-2:00 and stn4 a bit more moist than other sites the rest of the night and daytime
Wetness: heavy dew event fom 22:30-7:30, sensor dry by 9:15

T.10m: ok, stn 1 slightly warmer than other sites most of the night, stn 4 a bit cooler than other sites after midnight; good daytime agreement
RH.10m: ok, stn 2 about 5-7%RH lower than other sites from 23:00 to 10:00; also slightly drier at stn4 vs. others during the mid morning to early afternoon 
H2O.10m ok, stn 2 about 1.0 g/m^3 drier than other sites much of the night and early morning; stn 4 about 0.5 g/m^3 less than the other sites for much of late morning to to late afternoon
Spd.10m: ok, stn1 higher speed of 0.7-1.0 m/s  than the other sites up through 20:00-4:00
Dir.10m: ok, from the NW to N during the overnight, switching to E and SE by late afternoon

T.10m - T.2m: night: stn 2 about 0.7-1.0 degrees C warmer at 10 m vs. 2 m from 22:00-2:30; daytime: stns 3-4 a bit warmer at 2m vs. 10m than other site in the mid morning through early afternoon
H2O.10m - H2O.2m: night: several periods where stn2 is 1.0 g/m^3 drier at 10m vs. 2m than for stns 1 & 3, stn4 in a bit drier at 2m than for stns 1 & 3; day: stn 4 about 1.0-1.3 g/m^3 drier at 2m v.s 10m from 10:30 to the end of the period
spd.4.5m: ok, similar for Spd.10m
dir.4.5m: ok, see comments for Dir.10m
w.4.5m: ok, night: least positive or largest negative velocity for stn 4, stns 1& 3 have most upward velocity
tc.4.5m: ok, stn1 is about 0.5-1.0 degrees warmer than other sites for most of the night; stns 1-2 slightly cooler than Sites 3-4 in mid to late afternoon
ldiag: ok, short period around 3:00 where stn3 has a few 100 samples missing

kh2oV: ok, between 250-400 mV for night to day behavior
kh2o: night: stn 4 around about 2 g/m^3 wetter than stn 2 and about 4-5 g/m^3 more moist than stns 1 & 3 for the overnight and daytime;
h2o(licor): ok, stn 1 about 0.5-0.7 g/m^3 drier than stn 3 from much of the night; morning agreement by 9:30
lidiag (licor): ok, few spikes around 7:00

TKE.4.5m: ok, stn 1 higher TKE of 0.1-0.2 m^2/s^2 than other sites most of the night; close daytime agreement
w'w': ok, similar to TKE.4.5m, also seen in u'u' and v'v'
u*: ok,  nighttime: stn 1 about 0.05-0.1 m/s higher than other sites; similar to TKE.4.5m, v'w' also similar more-so than u'w'
w'tc': ok, night: larger negative heat flux by 0.01-0.02 C m/s at stn 1 up through 2:00; close agreement in morning and mid-late afternoon, stn2 a bit lower flux than others during 11:30-13:30
tc'tc': ok, similar to w'tc' with Stn 1 having lowest variance most of night; 11:30-1:30 stn 2 about 0.3 degrees C^2 less than stn 4, stns 1 &3 about 0.1-0.15 less than stn 4
w'h2o': ok, stns 2&4 larger negative flux at night (after 22:00-6:30), stn 2 & 4 a bit lower positive flux during the late morning-early afternoon
h2o'h2o' (licor): ok, close agreement for nighttime; stns 1-3 about 0.2 (g/m^3)^2 greater variance than at stn 2 & 4 in the mid afternoon
kh2o'kh2o': night: both kryptons reading 0.05-0.1 units of higher variance than the licors; daytime
w'co2': ok, night: somewhat higher positive flux at stn 1 vs. 3 from 20:00-2:00, less difference after 3:00, early afternoon more negative flux at stn 1 vs. 3
co2'co2': ok, higher variance at stn3 vs. 1 as similar periods for w'co2' close agreement during daytime

August 13
Dan Rajewski (in Ames)

Summary: Stations 1-4 operational, no ISFS staff on site, 
mostly cloudy overnight, morning partly cloudy, afternoon partly cloudy and breezy
WSW winds in the nighttime and switching to NW and somewhat NNW by late afternoon

Vdsm: 13.4-13.7 V during day, down to 12.4 at night
P: ok, pressure rising from 972 mb to 976 mb throughout the period
T.2m: brief periods where stn 1 is 0.5-0.7 degees warmer than other sites and also periods where stns 2 & 4 are 0.-0.7 degrees C warmer than the other sites;
RH.2m: stns 1&3 about 5%RH lower than stn 4 during the night; stn2 also a few%RH lower than stn 4; daytime: stn4 about 3-5%RH higher than other sites
H2O.2m: night: stn 4 about 1.0 g/m^3 greater vapor than stn 3 from 22:00-1:00; stn 2 about 0.7-1.0 g/m^3 drier than stn 1 and stn4; daytime: stn 4 about 0.5-0.7 g/m^3 more moist than other sites
Wetness: heavy dew event from 22:45-7:30, sensor dry by 9:45

T.10m: ok, stn 2 about 0.7-1.0 degrees C cooler than stn 3 from 23:30-1:00, smaller differences among sites the rest of the night
RH.10m: ok, stn 2 about 5-7%RH lower than other sites from 23:00 to 10:00; also slightly drier at stn2 vs. others during the mid morning to early afternoon
H2O.10m ok, stn 2
Spd.10m: ok, most of the night stns are within +/~0.5 m/s of each site; stn 1 a bit higher than other sites during the mid afternoon
Dir.10m: ok, from the W to WSW during the overnight, switching to NW most of the morning and afternoon

T.10m - T.2m: night: stns 1 & 4 about 0.5-0.7 degrees C warmer at 10 m vs. 2 m from 2:00-4:30; good daytime agreement
H2O.10m - H2O.2m: night: several periods where stn2 is slightly drier at 10m vs. 2m than for stns 1&3-4, stn 4 about 0.7 g/m^3 drier at 2m v.s 10m from 3:30 to the end of the period;
spd.4.5m: ok, similar for Spd.10m
dir.4.5m: ok, see comments for Dir.10m, a bit more SW flow in the overnight v.s WSW to W wind
w.4.5m: ok, before midnight more positive w at stn 3, near zero vertical motion at stn 4; stn 3 w~0 from 2:00-6:00; mostly w<0 at all sites after noon
tc.4.5m: ok, stn1 and stn 3 are slightly cooler than other sites much of the period before 3:00; stns 1-2 slightly cooler than Sites 3-4 in bid to late afternoon
ldiag: ok,

kh2oV: ok, between 250-400 mV for night to day behavior
kh2o: night: stn 4 around about 2 g/m^3 wetter than stn 2 and about 4-6 g/m^3 more moist than stns 1 & 3 for the overnight and daytime;
h2o(licor): ok, stn 1 about 0.5-0.7 g/m^3 drier than stn 3 from much of the night; separation btwn sites narrow by 8:00
lidiag (licor): ok,

TKE.4.5m: ok, stn 1 lower TKE than other sites several short periods after midnight; close daytime agreement but stn 1 a bit higher TKE in the late afternoon
w'w': ok, similar to TKE.4.5m, also seen in u'u' and v'v'
u*: ok,  nighttime: similar to TKE.4.5m, also similar to u'w' and v'w'
w'tc': ok, night: larger negative heat flux by 0.02 C m/s at stns 2-4 as in u*; close agreement in morning and afternoon fluxes
tc'tc': ok, not as clear of a signal for w'tc'
w'h2o': ok, stns 2&4 larger negative flux at night (after 0:00-6:30), close agreement in peak values of afternoon heat flux
h2o'h2o' (licor): ok, close agreement for nighttime; stns 1-3 about 0.04 (g/m^3)^2 greater variance than at stn 2 & 4 in the mid afternoon
kh2o'kh2o': night: both kryptons reading 0.04 units of higher variance than the licors; daytime: stn 2 about 0.02 units less variance than stn 4 for much of late morning and afternoon
w'co2': ok, night: somewhat higher positive flux at stn 3 vs. 1, daytime, more negative flux at stn 3 vs. 1
co2'co2': ok, higher variance at stn3 vs. 1 most of the night; close agreement during daytime

August 12, 18:45
Dan Rajewski (in Ames)

Summary: Stations 1-4 operational, no ISFS staff on site, Russ and Jimmy serviced the wind cubes
mostly cloudy overnight, light showers around 1:00, morning cloudy but clearing skies by early afternoon
light winds from the S to SE in the nighttime and switching to SW and somewhat WSW by early afternoon

Vdsm: 13.4-13.7 V during day, down to 12.4 at night
P: ok, rising pressure in overnight until remnants of a MCS in western IA cause about 5mb drop in ~1hr, rising or somewhat steady pressure rest of the period
T.2m: stn1 about 1.5 degrees C warmer than stn 4 from 20:30-23:00, and about 0.7-1.0 degrees C warmer than stns 2-3; From 23:30-0:30 stns 1 &4 about 1.0 degrees C cooler than other sites, stn4 sightly cooler than other sites rest of the nighttime;
RH.2m: stn1 about 10% RH lower than stn 4 from 20:30-23:00, and about 5-7% drier RH than stns 2-3; From 23:30-0:30 stns 1 &4 about 5%RH higher than other sites, stn4 about 5%RH higher than other sites rest of the night up through 10:30; daytime: stn 3 about few%RH lower than other sites
H2O.2m: night: stn 4 about 0.7-1.0 g/m^3 more vapor than other sites much of the night and about 0.5 g/m^3 more moist during the early to late morning;
Wetness: sensor mostly dry, slight voltage detected at 20:30 but clouds from nearby storms inhibited dew formation by 21:00

T.10m: ok, similar pattern as in T.2m for stn1 and the other sites before midnight through 1:00, good daytime agreement
RH.10m: ok, similar to RH.2m before midnight and through 1:00; stn 2 about 5%RH lower than other sites from 5:30 to 10:30
H2O.10m: night: stn 2 about 0.3-0.5 g/m^3 drier than other sites, day: stn 2 about 0.5 g/m^3 drier than other sites until 10:30, stn 4 slightly drier than the other sites in the afternoon
Spd.10m: ok, stn 2 is about 0.5-1.0 m/s lower than other sites from 21:00-22:00 and from 1:00-1:30; gust front from decaying thunderstorm (8 m/s captured at all sites around 2:15); slightly lower speed at stn4 during mid-late afternoon
Dir.10m: ok, mostly S to SE winds during the night; winds veering to SW and sometimes WSW through mid afternoon, slight WNW late in the period

T.10m - T.2m: night: stn4 about 0.5-0.7 degrees C warmer at 10 m vs. 2 m from 22:30-00:00 and from 2:00-5:00, close daytime agreement , stns 3 & 4 a bit higher temp at 2m vs. 10 m as compared to other sites for the late morning and early afternoon
H2O.10m - H2O.2m: night: stn1&3 near zero moisture gradient in overnight and several periods where stn2 is slightly drier at 10m vs. 2m than for stns 1&3, stn4 about 1.0 g/m^3 more moist at 2m vs. 10 m than other sites both at night and day;
spd.4.5m: ok, similar for Spd.10m
dir.4.5m: ok, see comments for Dir.10m, a bit more easterly flow noted at stn2 than other sites more ESE; or more SE flow at 4.5m vs. S to SSE flow at 10m
w.4.5m: ok, frequent changes in backing/veering wind direction complicates detection of vertical motion
tc.4.5m: ok, similar to T.2m
ldiag: ok,spiked values at stns 2-4 are quite low, stn 2 missing a few 100 samples in both night an daytime calculations

kh2oV: ok, between 250-500 mV for night to day behavior
kh2o: night: stn 4 around about 2 g/m^3 wetter than stn 2 and about 4-6 g/m^3 more moist than stns 1 & 3 for the overnight and daytime;
h2o(licor): ok, stn 1 about 0.5 g/m^3 drier than stn 3 from much of the night; close agreement by 10:00
lidiag (licor): ok, few periods of spikes in the early afternoon

TKE.4.5m: ok, higher TKE at stn1 vs. other from 21:15-22:00, stn2 higher than stn 1 by 0.20 m^/2s^2 from 23:30-0:30; gust front caused turbulence spike of near 3.0 m^2/s^2 at all sites
w'w': ok, similar to TKE.4.5m, also seen in u'u' and v'v'
u*: ok, similar to TKE.4.5m, u'w' patterns well to 21:15-22:00 and v'w' is similar to 23:30-0:30 period
w'tc': ok, night: larger negative heat flux by 0.02 C m/s at stn 1 as in u* especially from 21:15-22:00; afternoon fluxes at all sites mostly agree
tc'tc': ok, not as clear of a signal for w't'c but stn2 less variance than stn 1 for the first period and somewhat a reversal pattern for the second period; daytime: stn 4 a bit higher variance than other stations
w'h2o': ok, stn1 somewhat higher flux than other sites from 21:15-22:00; stn 2 & 4 slightly more negative flux than other sites much of the day
h2o'h2o' (licor): ok, close agreement for nighttime; stns 1 & 3 about 0.2 (g/m^3)^2 greater variance than at stn 2 & 4 in the late morning to mid afternoon
kh2o'kh2o': night: close agreement; daytime: stn 2 about 0.1 units less variance than stn 4 for much of late morning and afternoon
w'co2': ok, night and daytime flux in pretty close agreement except for when sensor spikes were occurring
co2'co2': ok, first half of night: slight differences between the sites; after the wind gust (2:00) variances in close agreement continuing on into the afternoon hours

August 11, 15:15
Dan Rajewski (in Ames)

Summary: Stations 1-4 operational, no ISFS staff on site, Russ and Dan serviced the south wind cube to replenish fuel

overnight: clear skies, cool, very low wind; daytime: mostly sunny with light winds from the southwest by the afternoon

**Turbines were not turning during the mid morning hours

Vdsm: 13.4-13.7 V during day, down to 12.4 at night
P: ok, rising pressure overnight from 973 to 976 mb by 12:00; falling in the afternoon

T.2m: stn1 about 1.0 degrees warmer than other sites most of the night; stn 2 about 0.5 degrees C cooler than stns 3-4 from 23:30-6:00; daytime close agreement up to 10:00; stns within +/- 0.5 degrees C of each other rest of afternoon
RH.2m: night: stn 4 about 5%RH higher than other sites from 22:00-6:00; close morning agreement stn 3 about few%RH lower than other sites in the afternoon
H2O.2m: night: stn 4 about 0.7-1.0 g/m^3 more vapor than other sites much of the night; close agreement at all sites in early-mid morning; stn4 about 0.5 g/m^3 wetter than other sites in the afternoon
Wetness: sensor wet from 22:00 to 9:30; dew formation stops around 7:30

T.10m: ok, most of the night all sites are within 0.5 degrees of each other, stn1 about 1.0 degree C warmer than stns 3-4 from 22:00-23:00, and from 4:00-6:30
RH.10m: stn 1 about 5%RH lower than stns 3-4, stn 2 about 3%RH lower than stns3-4 for much of night; good daytime agreement but a few%RH lower at stn4 vs. other sites
H2O.10m: night: stn 2 about 0.5-1.0 g/m^3 drier than other sites, day: stn 2 about 0.5 g/m^3 drier than other sites until 9:00, stn 4 slightly drier 0.5 g/m^3 than the other sites in the afternoon
Spd.10m: ok, winds very light (< 3 m/s) stn1 slightly higher speed than other sites a few times of the night, day: good agreement among sites, early to mid afternoon stn 4 slightly lower than stn 3
Dir.10m: ok, mostly WNW to W winds during the night; direction backing to WSW and eventual SW by mid afternoon

T.10m - T.2m: night: stn1 about 1.0-1.5 degrees C cooler at 10 m vs. 2 m from 21:00-22:00, near 1:00, and from 4:00-5:00;  stns 3 & 4 a bit higher temp at 2m vs. 10 m as compared to other sites for the late morning and early afternoon
H2O.10m - H2O.2m: night:  stn 3 about 1.0 g/m^3 more moist at 10 m vs. 2 m than at stn 4, other sites in between; late morning through the afternoon: stn 4 about 1.0-1.5 g/m^3 drier than other sites

spd.4.5m: ok, similar for Spd.10m,  a bit more organized longer periods where stn 1 has 0.5-0.7 m/s faster speed than the other sites
dir.4.5m: ok, see comments for Dir.10m
w.4.5m: ok, most of the night stn 4 has largest downward velocity w<0, stns 2 & 3 slightly positive motion for same night period stn 4, similar pattern in mid morning
tc.4.5m: ok, stn 2 about 1.0-1.5 degrees cooler than stns 3-4, about 2-2.5 C degrees cooler than stn 1 for several night periods; daytime good agreement, slightly cooler at stns 1-2
ldiag: ok, spiked values at stn2 are quite low, few 100 samples missing at stn 2 from 3:00-6:00

kh2oV: ok, between 300-600 mV for night to day behavior
kh2o: night: stn 2 had a spike (dew-related causal for low voltage?) around 5:30-6:30, stns 2 & 4 about 5-6 g/m^3 wetter than stns 1 & 3 for the overnight; both Sites 2 & 4 about 3-5 g/m^&3 more moist during the morning/afternoon
h2o(licor): ok, stn 1 about 0.5 g/m^3 drier than stn 3 from much of the night; close agreement by 12:00
lidiag (licor): ok, short duration of spikes noted at 6:00 and also in afternoon for Site 1

TKE.4.5m: ok, sites mostly in agreement, slightly higher TKE at stn 1 from 21:00 to 22:30;   good daytime agreement
w'w': ok, similar to TKE.4.5m, (stn 1 about 0.02 m/^2/s^2 higher as noted for TKE.4.5m), no significant differences in u'u' or v'v'
u*: ok, similar to TKE.4.5m from 21:00-22:30, but other periods of Site separation stn 4 about 0.05 m/s higher than stn 1 from 2:00-3:30'; fairly close daytime agreement
w'tc': ok, night: larger negative heat flux by 0.02 C m/s at stn 1 as in u* especially from 21:00-22:30; good daytime agreement, stn 3 slightly higher peak flux than other sites, stn2 slightly lower than other sites
tc'tc': ok, larger temp variance for stns 1-2 vs. 3-4 much of the night; daytime: stn 4 a bit higher variance than other stations
w'h2o': ok, stn 2 slightly more negative flux than other sites during sunrise to 1hr later; stn 3 has highest peak water flux of all sites about 0.04 g/m^2/s more than stns 2 & 4
h2o'h2o' (licor): ok, stns 1 & 3 about 0.5 (g/m^3)^2 greater variance than at stn 2 & 4 in the afternoon
kh2o'kh2o': night: few spikes at stn 2; daytime: stn 2 about 0.25 units less variance than stn 4 for much of late morning and afternoon
w'co2': ok, night: more periods of fluctuating positive night time fluxes for Site 1 vs. Site 3; close daytime agreement
co2'co2': ok, higher variance of co2 at stn 1 v.s stn 3 for several periods in the night; Daytime differences in variances are negligible

August 10, 13:50
Dan Rajewski (in Ames)

Summary: Stations 1-4 operational, no ISFS staff on site
clear overnight and cool, mostly sunny to partly cloudy daytime with light and variable winds under the influence of a surface high pressure

Vdsm: 13.4-13.7 V during day, down to 12.4 at night
P: ok, rising pressure overnight from 970 to 975 mb by 11:00; falling in the afternoon
T.2m: stn1 about 0.5-1.5 degrees warmer than other sites from 23:00-3:00 and from 4:00-7:00, stn2 about 1.0 degree C cooler than stns 3-4 from 1:00-2:00
RH.2m: night: stn 4 about 2-5%RH higher than stns 2-3 and about 5-7%RH higher than stn 1 from 21:30 to 2:00, later in night stn4 within a few%RH higher than other sites; slightly lower %RH at stn 3 vs. 4 during the afternoon
H2O.2m: night: stn 2 about 0.5-0.7 g/m^3 less vapor than other sites much of the night and up through 8:30; daytime: stn 4 slightly more moist than other sites
Wetness: dew formation from 0:00 to 7:45, sensor dry by 9:15

T.10m: ok, similar to T.2m for stn1 pattern during the overnight
RH.10m: stns 1-2 about 305%RH lower than other sites from 22:30-2:30, stn 2 about 5-7%RH lower than other sites from 3:00-7:30, agreement with other sensors 10:00; stn4 slightly drier than other sites in afternoon
H2O.10m: night: stn 2 about 1.0-1.5 g/m^3 drier than other sites, day: stn 2 about 0.5 g/m^3 drier than other sites until 9:30, stn 4 slightly drier than the other sites in the afternoon
Spd.10m: ok, stn1 about 1-1.5 m/s higher speed than other sites, stns 2-3 about 0.5 m/s lower than stn 4 from 21:30-0:00, other parts of night stns 2-4 remain at least 1.0 m/s lower than stn 1; day: good agreement among sites
Dir.10m: ok, mostly NW winds during the night and daytime; few periods of westerlies around 3:00-4:00 and from 7:00-7:30

T.10m - T.2m: night: stn2 about 0.5 degrees C warmer at 10 m vs. 2 m from 0:00-1:30; good daytime agreement
H2O.10m - H2O.2m: stns 1 & 3 mostly agree for day and night, stn 2 about 0.5-1.0 g/m^3 drier at 10 m vs. 2 m much of the night and up through 10:00, close agreement with stns 1 & 3 after that; stn 4 about 0.5 g/m^3 drier at 10m vs. 2m most of the night and during the daytime

spd.4.5m: ok, similar for Spd.10m, 
dir.4.5m: ok, see comments for Dir.10m
w.4.5m: ok, most of the night stn 4 has largest downward velocity w<0, stns 2 & 3 slightly positive motion for same night period stn 4, similar pattern in mid morning then stn 1 & 3 are more negative in afternoon and stns 2 & 4 are slightly positive
tc.4.5m: ok, similar pattern to T.2m
ldiag: ok, spiked values at stn2 are quite low, few 100 samples missing at stn 2-4 in the overnight hours

kh2oV: ok, near 300-500 mV in the daytime
kh2o: night: stns 2&4 about 5-6 g/m^3 wetter than stns 1 & 3 for the overnight; day: stn4 about 1.5 g/m^3 wetter than stn 2 and about 5.0 g/m^3 more moist than stns 1 & 3
h2o(licor): ok, stn 1 about 0.5 g/m^3 drier than stn 3 from much of the night; close agreement by 11:00
lidiag (licor): ok, spikes during period of dew accumulation

TKE.4.5m: ok, stn 1 about 0.15-0.2 m^2/s^2 greater than other sites much of the night from 22:00-7:00
w'w': ok, similar to TKE.4.5m, also close agreement with u'u' and v'v'
u*: ok, similar to TKE.4.5m from  also seen in u'w' and v'w'
w'tc': ok, night: larger negative heat flux by 0.02 C m/s at stn 1 as in u* especially from 23:00-2:00; good daytime agreement
tc'tc': ok, somewhat higher temp variance noted from 23:00 to 1:30; no big differences during the daytime
w'h2o': ok, slightly higher positive flux at stn1 from 22:30-1:00 where other sites have near-zero flux; daytime: stn 2 a bit drier than other Sites
h2o'h2o' (licor): ok, some spikes in data during the night; close agreement with other sites after 5:30-6:00
kh2o'kh2o': night: few spikes in the data, mostly in agreement with licor; day: slightly less variance at stn 2 & 4 vs. 1 & 3 but this might be related to differences in sensor types
w'co2': ok, night: much of the night less positive flux (2-3*10^-5 g/m^2/s) at Stn 3 vs. Stn 1; slightly higher co2 uptake at Site 1 vs. Site 3 during the afternoon
co2'co2': ok, slightly higher variance at stn 1 vs. stn 3 during the night, close agreement among sites during the day

August 9, 16:08
Dan Rajewski (in Ames)

Summary: Stations 1-4 operational, Kris, Russ and Dan on site to service the wind cubes and check the bug screens for the 2mTRH inlets
mostly sunny to partly cloudy conditions much of the period
winds breezy out of the W or WNW through the afternoon, mostly cloudy by evening as another cold frontal passage is expected 

**The turbine in between ncar1 & ncar2 and the turbine in between the north and south wind cube were offline much of today as two separate crews were servicing the turbines.  Return start up time 'likely' after 15:00

Vdsm: 13.4-13.7 V during day, down to 12.4 at night
P: ok, pressure steady in the overnight, rising in the morning by 3 mb and beginning to fall around 13:00 by about 1-2 mb through the end of the afternoon
T.2m: stn4 about 1.0-1.5 degrees cooler than other sites from 0:00-3:00, stns 2-4 about 1.0-1.5 degrees C cooler than stn 1 from 2:00-3:30; near sunrise stn 1 about 0.5 degrees C warmer than other sites; good daytime agreement
RH.2m: night: stn 4 about 2-5%RH higher than other sites both day and night; stn2 also about 1-2%RH higher than stns 1 & 3 for much of the night;
H2O.2m: night: similar pattern as in T.2m stn 4 lower than stn1 from 0:30-3:00; daytime: stn 4 about 0.5 g/m^3 higher than at other sites
Wetness: dew formation from 20:00 to 7:30, sensor dry by 9:45
** seemed to be more dew on north side than south side of the field when walking the access paths to the wind cubes and ncar stations

T.10m: ok, stn 4 about 0.7 degrees C cooler than stn 3 from 23:00 to 1:30, stn 1 about 0.7 degrees C warmer than stn 4 from 1:30 to 4:30 and from 5:00-7:00; good daytime agreement
RH.10m: stn 2 about 7-10%RH lower than other sites at night and through early morning, stn 1 a bit lower than stns 3-4 for much of the night day: agreement in all sites by 9:00, stn4 slightly lower RH in the mid-late afternoon
H2O.10m: night: stn 2 about 1.0-1.5 g/m^3 drier than other sites, day: stn 2 about 0.5 g/m^3 drier than other sites until 9:00, stn 4 few%RH lower than other sites
Spd.10m: ok, stn4 a bit lower than other sites from 0:00 to 3:00, from 2:30 to 7:30 stn 1 about 1.0-1.5 m/s higher than stn 2; Sites 3 & 4 in between; good daytime agreement
Dir.10m: ok, W winds backing to SW by 22:00, then veering to W by midnight; by sunrise winds veering to WNW and slight NW; much of day winds from WNW 

T.10m - T.2m: night: stn4 about 0.7-1.0 degrees C slightly warmer at 10 m vs. 2 m from 0:00-2:30, stns 1 & 3 coolest during that period, stn1 also slightly cooler than stn 4 during 5:30-7:30
H2O.10m - H2O.2m: stns 1 & 3 mostly agree for day and night, stn 2 about 1.0-1.5 g/m^3 drier at 10 m vs. 2 m much of the night and up through 9:00, close agreement with stns 1 & 3 after that; stn 4 about 0.5 g/m^3 drier at 10m vs. 2m during the night and about 1.0 g/m^3 drier at 10m vs. 2m during the day

spd.4.5m: ok, similar for Spd.10m, 
dir.4.5m: ok, see comments for Dir.10m
w.4.5m: ok, most of the night highest w>0 at Site 3 vs. highest negative w<0 at stn 4, similar pattern in mid morning then stn 1 & 3 are more negative in afternoon and stns 2 & 4 are slightly positive
tc.4.5m: ok, similar pattern to t.2m., stns 3 & 4 slightly warmer than stns 1 & 2 for early to mid afternoon
ldiag: ok

kh2oV: ok, near 300-400 mV in the daytime, dew formation causing poor voltage response from 1:00 to 7:00
kh2o: night: stns 2&4 about 3-4 g/m^3 wetter than stns 1 & 3; long period of high anomalous readings indicative of dew present; day: stn4 about 1.5 g/m^3 wetter than stn 2 and about 5.0 g/m^3 more moist than stns 1 & 3
h2o(licor): ok, stn 1 about 0.5 g/m^3 drier than stn 3 from much of the night; fields disrupted by rain from 3:00 to 10:00; close agreement by 11:00
lidiag (licor): ok, spikes during period of dew accumulation

TKE.4.5m: ok, sites in good agreement except from 3:30-6:00, stn 1 about 0.15-0.2 m^2/s^2 greater than other sites
w'w': ok, similar to TKE.4.5m, also close agreement with u'u' and v'v'
u*: ok, similar to TKE.4.5m from 3:30-6:00, also stn 3 and 2 a bit higher TKE than stns 1& 4 from 23:00-1:00, also v'w' similar to u*
w'tc': ok, night: larger negative heat flux at stns 2-3 as in u*; stns1-4 also larger negative flux than other sites; good daytime agreement
tc'tc': ok, similar effects noted as in w'tc' from 0:00-2:30; higher variance at stn2 & 4 vs. 1 & 3 from 4:30-7:00; daytime: good agreement
w'h2o': ok, all sensors show anomalous readings from condensation effects, stn2 has longest night period of dew accumulation (vapor flux < 0), other sites near zero flux; daytime flux at stns 1&3 a bit higher than at stns 2 & 4
h2o'h2o' (licor): ok, several spikes in data during the night; close agreement with other sites after 5:30-6:00
kh2o'kh2o': night: spikes in the data until a general agreement with the other sites by 5:30-6:00
w'co2': ok, night: greater fluctuations at stn 3 vs. stn 1, from 5:30-7:00 stn 1 positive flux a bit higher than at stn 3; day:mostly in agreement, maybe a slight increase in co2 uptake at stn 3 in the late morning to middle afternoon
co2'co2': ok, poor signal b/c of dew effects from 22:30-4:30; mostly in agreement after 7:00, slight increase in variance at stn3 vs. stn 1 around sunrise and 1hr after

August 8, 21:08
Dan Rajewski (in Ames)

Summary: Stations 1-4 operational, no ISFS staff on-site, Russ and Dan serviced the wind cubes and Kris checked the ISU towers around 16:15-18:00 CDT,
late night/early morning thundershowers were replaced with mostly sunny conditions by late morning
winds light to moderate out of the NE to E before rain and NE to NW in the morning and WNW afternoon
**Krypton voltage about 100-150 mV, check the readings tomorrow morning before heading out to the wind farm; otherwise lens cleaning in order likely by Friday, also check bug screens on 2m TRH inlets

Vdsm: 13.4-13.7 V during day, down to 12.4 at night
P: ok, pressure steady in the overnight except during the storm passage (falling 4 mb) mostly steady pressure in the morning and afternoon
T2m: most of the night stations within about +/- 0.5 degrees C of each other; good daytime agreement
RH.2m: night: stn 4 about few%RH higher than stn 2, about 5%RH higher than stns 1,3; daytime: stn4 about few% RH higher than other sites
H2O.2m: night:  stn 4 about 0.5-0.7 g/m^3 higher than at other sites much of the night and daytime

Wetness: dew formation from 20:45 to 1:30, thunderstorm/showers from 3:00-3:30 and from 6:30-7:00, sensor dry by 8:15

T.10m: ok, stn 4 slightly warmer than other sites from 21:00-22:30; good daytime agreement
RH.10m: stn 2 about 7-10%RH lower than other sites at night and through early morning, day: agreement in all sites by 12:00
H2O.10m: night: stn 2 about 1.5 g/m^3 drier than other sites, day: stn 2 about 0.5 g/m^3 drier than other sites until 12:00, then good afternoon agreement
Spd.10m: ok, stn1 slightly higher speed and stn2 lower speed than sites 3-4 from 20:00-23:00; nighttime peak wind of near 6.0 m/s at 3:00
Dir.10m: ok, NE to E winds before rainfall, NE to NW winds in the early to late morning, WNW to NW in the afternoon

T.10m - T.2m: night: stn4 slightly warmer at 10 m vs. 2 m from 21:00-23:00, stn 1 coolest during that period, close agreement rest of nighttime and into the day
H2O.10m - H2O.2m: stns 1 & 3 mostly agree for day and night with near-zero moisture gradient, stn 2 about 1.0-1.5 g/m^3 drier at 10 m vs. 2 m much of the night and up through 12:00, close agreement with stns 1 & 3 after that; stn 4 about 0.7 g/m^3 drier at 10m vs. 2m during the night and about 1.0 g/m^3 drier at 10m vs. 2m during the day

spd.4.5m: ok, similar for Spd.10m, 
dir.4.5m: ok, see comments for Dir.10m
w.4.5m: ok, from 19:00-23:00 stn 4 velocity near 0 whereas other sites around 0.02 m/s; early to mid afternoon stn3 more descent (-0.04 m/s) vs. other sites, stns 2&4 slightly positive w
tc.4.5m: ok, stn 1 slightly cooler than other sites much of night, stn3 about 0.7-1.0 degrees C warmer than stn 1 from 3:30-4:30 and from 6:30-7:30 (effect of rain fall?), late afternoon stns 3 & 4 slightly warmer than stns 1 & 2
ldiag: ok

kh2oV: ok, near 150-200 mV in the night before the rain and also in the early morning through late afternoon, poor voltage signal from 3:00 to 7:30
kh2o: night: before rainfall stn 2 about 1.0 g/m^3 wetter than stn 4; long period of high anomalous readings coinciding with rain event through 11:00 both about 4-5 g/m^3 more moist than stns 1 & 3; daytime stn 2 about 2.0 g/m^3 wetter than other sites, stn 4 about 3.0 g/m^3 more moist
h2o(licor): ok, stn 1 about 0.5 g/m^3 drier than stn 3 from much of the night; fields disrupted by rain from 3:00 to 10:00; close agreement by 11:00
lidiag (licor): ok, spikes during periods of rainfall

TKE.4.5m: ok, sites in good agreement, capturing a 3.0-4.0 (m/s)^2 spike around 3:00
w'w': ok, from 20:00-23:00 where stn 1 slightly higher than others sites otherwise similar to TKE.4.5m
** w'w' pattern is similar to v'v' but not u'u, but u'u' is about 3X stronger than v'v' so u'u' that masks the effect of v'v' in the TKE
u*: ok, somewhat similar to w'w', and v'v'; v'w' also similar to u*
w'tc': ok, night: same 20:00-23:00 period where stn 1 flux slightly more negative than other sites otherwise close agreement
tc'tc': ok, slightly higher variance at stn4 for a few periods up through 1:00; daytime: good agreement
w'h2o': ok, stns 2 & 4 begin condensing water from 0:00-1:30, other sites near zero flux, rest of night and early morning spurious readings at all sites up through 8:00 with Sites 1 & 3 and up through 12:00 at Sites 2 & 4
h2o'h2o' (licor): ok, several spikes in data during the night; good agreement by 8:00,
kh2o'kh2o': night: mostly in agreement until 1:00 with spikes in the data set then and right before onset of rain, variances unphysical after rain fall until about 11:00-11:30; stns 2 & 4 about 0.15 g/m^2/s lower than other sites in the early afternoon, mostly in agreement with other sites for late afternoon-evening
w'co2': ok, night and day mostly in agreement, strong spike during period of rain around 3:30, stn1 slightly lower than stn3 from 10:30-11:30
co2'co2': ok, rain induced effect: stn 1 sightly higher (1*10^-3 (g/m^3)^2) than stn 3 from 4:00-5:00; otherwise sites mostly in agreement in the night and daytime

August 7  22:50 CDT
Dan Rajewski (in Ames)
Summary: Stations 1-4 operational, no ISFS staff on-site, Russ and Dan serviced the south wind cube around 21:00-23:00 CDT of August 6, turbines did not turn until 22:30 or so
clear skies were replaced with clouds from thunderstorms in southwest and south-central IA, thunderstorms in the vicinity but wind farm on the north edge of the rain band
mostly clear skies by morning with a scattered clouds through the afternoon, light to moderate winds out of the WNW and less humid conditions

Vdsm: 13.4-13.7 V during day, down to 12.4 at night
P: ok, pressure falling 2 mb by 1:00 and rising 2mb by mid morning, falling 2mb by early evening
T2m: stns 2 & 4 about 0.5 degrees C cooler from 21:00-22:00, stn 3 about 0.5 degrees C warmer from 2:30-3:00 and from 6:00-7:00;  daytime most sites in agreement, largest temperature fluctuations during afternoon noted at stn4
RH.2m: stn 4 about few%RH higher than the other stations most of the night and morning; early afternoon stn4 is in close agreement with other sites
H2O.2m: night:  stn 4 about 0.5 g/m^3 higher than at other sites much of the night and daytime

Wetness: thunderstorm/rain showers from 22:30 to 23:00, dew occurrence from 2:00-2:30 and from 6:00-7:00, sensor dry by 9:00

T.10m: ok, stn 1 slightly warmer than other sites from 20:00-22:30, stn3 slightly warmer than other sites from 6:00-7:00; good daytime agreement
RH.10m: stn 2 about 7-10%RH lower than other sites at night and through early morning, day: agreement in all sites by 12:00
H2O.10m: night: stn 2 about 1.5 g/m^3 drier than other sites, stn1 slightly lower than stns 3 & 4 up though midnight; day: stn 2 about 0.5 g/m^3 drier than other sites until 10:30; about 0.5 g/m^3 drier at stn 4 vs. other sites for much of afternoon
Spd.10m: ok, close agreement in speed, nighttime peak wind of 5/ms around 1:00
Dir.10m: ok, WSW to S winds up through midnight, then switching back to W by 4:00 and mostly W or WNW after 7:00

T.10m - T.2m: night: fairly close agreement among all sites; day stn 4 slightly warmer at 2m vs. 10 m for mid afternoon
H2O.10m - H2O.2m: stns 1 & 3 mostly agree for day and night, stn 2 about 1.0-1.5 g/m^3 drier at 10 m vs. 2 m much of the night and up through 12:00, close agreement with stns 1 & 3 after that; stn 4 about 0.7 g/m^3 drier at 10m vs. 2m during the night and about 1.0 g/m^3 drier at 10m vs. 2m during the day

spd.4.5m: ok, similar for Spd.10m, 
dir.4.5m: ok, see comments for Dir.10m, more spikes in direction during the rainfall events
w.4.5m: ok, before rain event stn 3 highest uplift  ~0.03 m/s, stns 1-2 about 0.02 m/s, stn 4 about 0.0-0.01 m/s; after the rain stn 3 a bit more w>0 than other sites, stns 2 & 4 have more w<0 or near zero; afternoon stns 3-4 a bit more negative vertical motion than sites 1-2
tc.4.5m: ok, see comments for T.2m
ldiag: ok

kh2oV: ok, near 150-250 mV
kh2o: night: stn 2 about 1.5-2.0 g/m^3 wetter than at stn 4, both of these about 4-5 g/m^3 wetter than stns 1 & 3; daytime a bit closer agreement, stn 2 about 3.0 g/m^3 wetter than other sites, stn 4 about 2.0 g/m^3 more moist
h2o(licor): ok, stn 1 about 0.5 g/m^3 drier than stn 3 from much of the night; close agreement by 12:00
lidiag (licor): ok

TKE.4.5m: ok, sites in good agreement, capturing a 1.6 (m/s)^2 spike around 1:00
w'w': ok, similar to TKE.4.5m, also in u'u' and v'v'
** v'v' slightly higher variance ~0.1 (m/s)^2 at stn 3 vs. other sites during late morning/early afternoon
u*: ok, somewhat similar to TKE.4.5m, also u'w' similar daytime pattern to v'v'
w'tc': ok, night: close agreement, few short periods where stn3 flux is slightly more negative;  close agreement for daytime including peak flux for early afternoon
tc'tc': ok, similar to w'tc', also for late afternoon higher variance at stn 4 by 0.05-0.10 degrees C^2 vs. other sites
w'h2o': ok, close agreement first part of night, stn2 slightly higher than others for few short periods around 1:00 and around 4:00; daytime:  stns 2 & 4 about 0.02-0.03 g/m^2/s lower flux than sites 1 &3
h2o'h2o' (licor): ok, close agreement between stns 1 & 3
kh2o'kh2o': higher variance (somewhat short-spiked pattern) for stn2 during the late night hours as in w'h2o'; morning and afternoon; stn 2 & 4 about 0.25 g/m^2/s lower than other sites in the late morning through afternoon
w'co2': ok, night: mostly in agreement, rain induced effect: from 23:00-0:00 about 0.0015 g/m^2/s higher at stn 1 vs. stn 3; peak negative flux also slightly higher at stn 1 vs. 3 otherwise good daytime agreement
co2'co2': ok, rain induced effect: stn 1 sightly higher (1*10^-3 (g/m^3)^2) than stn 3 from 23:00-0:00; otherwise sites mostly in agreement rest of night and day