June 30, 12:45 CDT
Tom Horst (in Boulder)
Summary: Stations 1-4 operational, no ISFS staff on site
Stn 2 RH.2m no apparent change with new sensor;
sites 1 and 2 drier at 2m than sites 3 and 4.
some differences in mean winds and turbulence among sites.
large noise on kh2o at stn 4 after 00:00 GMT today
Vdsm: 13.5-14 V during day, down to 12.5 at night
P: ok, relative pressures suggest site rises from south to north(?)
T.2m: ok, stn 1 at times colder at night than 2-4; stns 3&4 colder during
the day yesterday; otherwise stations agree closely with each other
RH.2m: 80-100% at night; stns 1 & 2 often a few %RH less than stns 3 and 4
H2O.2m: stns 1 and 2 are ~1 gm/m^3 less than stations 3 and 4 during the
day but within 0.5 gm/m^3 at night (stns 2,3,4)
Wetness: peak at 06:00 coincides with RH close to 100%
T.10m: ok, see comments for T.2m
RH.10m: ok, 90-95% at night
H2O.10m: ok, 1 & 4 drier than 2 & 3
Spd.10m: ok, at time last night stn 1 lower than 2-4
Dir.10m: ok, 1 & 3 and 2 & 4 agree best last night
T.10m - T.2m: ok, diurnal cycle as expected, very similar at all sites
H2O.10m - H2O.2m: 1 & 2 > 0 last night
spd.4.5m: ok, see comments for Spd.10m
dir.4.5m: ok
w.4.5m: ok
tc.4.5m: ok, all sites agree within +/- 0.5 degC
ldiag: ok
kh2oV: below 100 mV, but h2o up 23 gm/m^3
kh2o: ok
h2o(licor): ok
lidiag (licor): ok
TKE.4.5m: ok, lower at stn 1 than 2:4 last night
w'w': ok, see comment for TKE (also u'u' and v'v')
u*: ok, see comment for TKE
w'tc': ok, diurnal cycle as expected,
noticeably higher at sites 1 and 2 during daytime
tc'tc': ok, significantly higher at sites 1 and 2 during daytime
w'h2o': ok, sometimes highest at site 4 during daytime
h2o'h2o': ok
kh2o'kh2o': not ok; huge variance at stn 4 beginning around 00:00 GMT today
w'co2': ok, daytime flux greater (more negative) at 3 than 1
co2'co2': ok, see comment for w'co2'
This done at about 16:03MDT to try to solve the high krypton variance problem at this site.
From what I could tell, there was no affect. (voltage still small, but the same before and after the power cycle).
Note that I panicked that the sonic didn't immediately come back up, so I also did an "adn"/"aup" cycle on the data system.
The krypton voltage at 4 is low, less than 0.1. It is also quite humid: H2O > 20 g/m^3
kh2o goes as -log(V), so the variance goes up as the voltage reaches the noise floor.
The covariance with w (w'kh2o') still looks generally good.
http://www.eol.ucar.edu/isf/projects/CWEX11/isfs/qcdata/plots/20110630/krypton4_20110630.png
http://www.eol.ucar.edu/isf/projects/CWEX11/isfs/qcdata/plots/20110630/h2o_20110630.png
It's probably wise to also clean the krypton at 2.
June 29 16:49(?)
Kurt swapped 2m trh at station 2. I can't see any difference in data.
GM: TRH27 was removed, TRH22 installed. I'll check the exact time once today's data files are copied to Boulder.
June 29, 15:15 CDT
Tom Horst (in Boulder)
Summary: Stations 2-4 operational, KK on site
Stn 1 operational ~14:00 today
Stn 2 RH.2m questionable; replacement due today
Perhaps see effect of turbine wake in w'tc' and tc'tc'(???)
Vdsm: 13.5-14 V during day, down to 12.5 at night
P: ok, relative pressures suggest site rises from south to north(?)
T.2m: ok, stns are less homogeneous at night, which is not surprising
RH.2m: 80-90% at night; stns 1 & 2 often a few %RH less than stns 3 and 4
H2O.2m: stns 1 and 2 are ~1 gm/m^3 less than stations 3 and 4 @ 16:00,
but within 0.5 gm/m^3 at night (stns 2,3,4)
Wetness: dry...
T.10m: ok, stns are less homogeneous at night, which is not surprising
Gordon's hack seems to be working
RH.10m: ok, 80-90% at night
H2O.10m: ok, within < 0.3 gm/m^3 at night
Spd.10m: ok
Dir.10m: ok, winds from the south!!
T.10m - T.2m: ok, diurnal cycle as expected
H2O.10m - H2O.2m: ok, no significant values > 0
spd.4.5m: ok
dir.4.5m: ok
w.4.5m: ok
tc.4.5m: ok, all sites agree within +/- 0.5 degC
ldiag: ok
kh2o: ok
h2o(licor): ok
lidiag (licor): ok
TKE.4.5m: ok
w'w': ok, similar at all sites
u*: ok, similar at all sites
w'tc': ok, diurnal cycle as expected, noticeably higher at sites 1 and 2
tc'tc': ok, significantly higher at sites 1 and 2
w'h2o': ok, diurnal cycle as expected
Jun 29, 13:30 CDT
Kurt is at site 1 and phoned to report that system is up. The mast was still down, he will raise it shortly.
TWH: data show mast up at 13:55
I logged in and all looks good - all sensors reporting (except a problem with 2m TRH, see below), including leaf wetness, and flash drive is being written to.
sonic: 537
licor: 1167
prop: 315, propeller: 48627
barometer: B2
2m: TRH17
10m: TRH21
Actually on further inspection the 2m TRH was reporting garbage, with rserial reporting wacky hex values in the middle of the ASCII data. I powered it down and back up with eio:
eio 5 0 eio 5 1 rs 5
After that the rserial output looked good.
I ran the function plot.tilt() for the period 6/22 16:00 to 6/29 16:00 to calculate preliminary sonic tilt angles and w offsets by the planar fit technique.
|
w-offset |
lean angle |
lean azimuth |
|---|---|---|---|
stn 1 |
|
|
|
stn 2 |
-1 |
0.7 |
132.6 |
stn 3* |
-3 |
1.2 |
46.0 |
stn 4 |
-1 |
1.5 |
54.8 |
*analysis starts 6/23 16:05 when sonic was replaced to switch fast hygrometers
Entered these values in the CWEX sonic cal_files in the flow_normal directory.
June 28, 16:00 CDT
Tom Horst
Summary: Stations 2-4 operational, no ISFS staff on site
Stn 4 P behaved itself past 24 hours
Stn 2 RH.2m questionable; replacement due on Wednesday
Gordon fixed stn 4 T.10m drop-outs
Vdsm: 13.5-14 V during day, down to 12.5 at night
P: ok, last anomoly at stn was July 27 08:00 - 10:00
T.2m: ok, stns are less homogeneous at night, which is not surprising
RH.2m: 90-100% at night; stn 2 often a few %RH less than both stns 3 and 4
T.10m: ok, stns are less homogeneous at night, which is not surprising
stn4 dropped out two times in the past 24 hours; see GM wiki entry
RH.10m: ok, 90-100% at night; no data lost from RH
Spd.10m: ok
Dir.10m: ok, prevailing winds are from the south when??
T.10m - T.2m: ok, expected diurnal cycle
H2O.10m - H2O.2m: stn 2 still > 0 at night
spd.4.5m: ok, 25 m/s at 2200, June 26
dir.4.5m: ok
w.4.5m: ok
tc.4.5m: ok
ldiag: ok
TKE.4.5m: ok, max = 9 (m/s)^2
w'w': ok, max = 1.7 (m/s)^2
u*: ok, max = 1.3 m/s
w'tc': ok, expected diurnal cycle
tc'tc': ok
w'h2o': ok, expected diurnal cycle
kh2o: ok
h2o(licor): ok
lidiag (licor): ok
At Jun 27 20:35 UTC (15:35 CDT) the 10 meter TRH data stopped. It resumed on its own about 1.5 hours later. From the archive file:
data_dump -i 4,60 -A ncar4_20110627_120000.dat.bz2 ... 2011 06 27 20:35:48.5645 0.9701 30 TRH15 24.64 55.05 6442 1670\r\n 2011 06 27 20:35:49.5345 0.9701 30 TRH15 24.64 54.87 6442 1665\r\n 2011 06 27 22:07:08.7843 5479 13 \x006412 1642\r\n 2011 06 27 22:07:09.7387 0.9544 30 TRH15 24.35 54.09 6413 1645\r\n 2011 06 27 22:07:10.7089 0.9702 30 TRH15 24.34 53.84 6412 1638\r\n
I noticed in the daily plots that it stopped again on Jun 28 about 13:00 UTC. I logged in, ran rserial (rs 7), and it resumed after I hit a few carriage returns.
Since a carriage return seemed to help, I changed the xml on that system for the TRH sensor, adding a timeout of 10 seconds and an init_string of \r:
<serialSensor ID="NCAR_SHT" class="DSMSerialSensor"
baud="9600" parity="none" databits="8" stopbits="1" timeout="10"
init_string="\r">
The Grove Cafe
Good breakfast (or lunch) in Ames:
124 Main Street, park in back north of the RR tracks
Open until 2 pm Mon-Sat(?), noon on Sunday
Usually crowded, but we always got a table
The Cafe
Great dinner in Ames (or breakfast or lunch)
2616 Northridge Pkwy (515) 292-0100
Dinner entrees $10 - $16.
Country House Restaurant
Hearty breakfast or lunch near wind farm:
68168 U.S. 30, South side of U.S. 30 near Colo, just west of U.S. 65
On the way to and from the site.
Hickory Park Restaurant
Good barbecue:
On north side of 16th street a few blocks west of the Grandstay Hotel
Seats 450!
The local site manager for Nextra Energy Operating Services is Samuel Tasker:
641-487-7317 - x11 (office)
641-691-8794 (cell)
June 27
I note that there are significant differences among the stations for H2O.10m - H2O.2m. This appears to be caused by differences among the stations for RH.2m.
Averaged over the past three days:
RH.2m (ncar2) - RH.2m (ncar4) = - 4.3%
RH.2m (ncar3) - RH.2m (ncar4) = - 0.8%
Some of this could be real, caused by differences in soil moisture and the corn heights. However for station 2, H2O.10m - H2O.2m is often > 0
except in the middle of the day. RH.10m is very consistent among the stations, as is both T.10m and T.2m.
I suggested to Dan Rajewski that he swap the 2m TRH sensor at station 2 with one of those intended for station 1. He hopes to do this on Tuesday.
June 28
Oops. We discovered that the two TRH sensors intended for station 1 are in the corresponding dsm enclosure, which is in the pickup truck that Kurt is currently
driving back to Ames in order to install station 1 on Wednesday. Kurt also has two spare TRH sensors and one of those will be swapped with the 2m TRH
at station 2, hopefully on Wednesday also.
June 27, 11:27 CDT
Tom Horst
Summary: Stations 2-4 operational, no ISFS staff on site
Stn 4 pressure occasionally departs from others
There are significant differences among the stations for H2O.10m - H2O.2m
Vdsm: 13.5-14 V during day, down to 12.5 at night
P: low at 03:00 June 27; stn 4 occasionally departs from others on June 26-27
T.2m: ok
RH.2m: ok, 90-100% at night
T.10m: ok
RH.10m: ok, 90-100% at night
Spd.10m: ok
Dir.10m: ok
T.10m - T.2m: ok
H2O.10m - H2O.2m: there are signicant differences among the stations
spd.4.5m: ok, 25 m/s at 2200, June 26
dir.4.5m: ok
tc.4.5m: ok,
ldiag: high 6/26 22:00 - 6/27 00:00
TKE.4.5m: ok, max = 9 (m/s)^2
w'w': ok, max = 1.7 (m/s)^2
u*: ok, max = 1.3 m/s
w'tc': ok
tc'tc': ok
w'h2o': ok
kh2o: wet 6/25 0900-1500; 6/26 22:00 - 6/27 09:00
h2o(licor): ok
lidiag (licor): wet 6/25 09:00-14:00; 6/26 22:00 - 6/27 02:00
Given the complications induced by rain Saturday morning, the CU team has revised our schedule for deployments. Julie will still arrive Sunday 6/26, but Michael and Robert will arrive Wednesday evening 6/29.
Thursday morning: Deploy WC-68 at the northerly location
Thursday afternoon: Deploy WC-49 at the northerly location a few m from WC-68
We would like to have 24-48 hours of simultaneous sampling of the same wind profile. So as early as Saturday afternoon, depending on fertilizer applications to the southerly location, Julie, Michael, Robert, and Branko will move WC-49 to the southerly location.
Gordon, June 25
I did some by-hand rsyncs of part of today's data from sites 2-4, using the rsync -z (compress) option:
site |
speed (byte/sec) |
total size (Mbyte) |
compressed size (Mbyte) |
|---|---|---|---|
ncar2 |
58467 |
52 |
21 |
ncar3 |
45783 |
121 |
38 |
ncar4 |
54916 |
52 |
21 |
The downloads were happening simultaneously. These speeds look good, 40-60 kbyte/sec is acceptable.