July 13, 17:02 CDT
Dan Rajewski (in Ames)
Summary: Stations 1-4 operational, no ISFS staff on-site
NE nighttime flow, ENE wind in mid morning switching to E before noon
long afternoon period of easterly flow to capture likely 'wake influences' from the turbines at stns 1 & 2 and less so at stns 3-4
Vdsm: 13.5-13.8 V during day, down to 12.5 at night,
P: ok, for night and early morning: stns 1&3 2 about 0.5 mb higher than stn 3, stn3 about 0.25 mb lower than stn 4
T.2m: ok, stn4 about 0.5 degree cooler than stns 1 & 3 1 hr before midnight;
stn 2 warmer by 0.25 degrees than other sites for most of night and early morning
late morning to afternoon stn 2 about 1.0-1.5 degree warmer than other sites
RH.2m: 90-95% nighttime; dropping to 70%-75% by afternoon
night: stns 4 5% RH higher than other sites around midnight, few%RH higher rest of night
daytime stns 4 ~5%RH higher than stns 1 & 3, stn 2 about 5%RH lower than stns 1 & 3
H2O.2m: ok, 18 g/m^3 before midnight night, drop to around 13 g/m^3 before sunrise, back to 17 g/m^3 in late afternoon
stn 1 about 0.3 g/m^3 drier than other sites all of nighttime
stn 4 about 0.5 to 1.0 g/m^3 more moist than stns 1-2, 3 from late morning-late afternoon
stns 1-2 slightly drier than stn 3 also in afternoon
Wetness: sensor lost wetness around 19:00 (Jul 12) from previous afternoon showers and remained dry for next daily cycle
T.10m: ok, stn4 1hr before midnight: see comments for T.2m,
other sites in pretty good agreement for daytime and nighttime, stns 1 &2 slightly warmer than 3-4
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dir.4.5m: ok, see comments of dir.10m
w.4.5m: ok, night: stn 4 less descent (-0.02 m/s) than stns 2 & 3 (-0.06 m/s), less fluctuation in w (-0.04 m/s) for stn 1
daytime stn 3 more w<0 (-0.12 m/s) 9:00-13:00 and again at 16:00
daytime stn 2 w~-0.1 m/s mid morning but going slightly positive to -0.02 m/s after 11:00-16:00 (multiple turbine wake influence?)
tc.4.5m: ok, stn 2 about 0.3 degree cooler than other sites most of night
ldiag: ok, a few samples not taken in portions of overnight or during the rain events
vh2ov: ok, stn 2 above 100mV, early morning rise to over 200 mV and returning to 150mV by late afternoon
stn 4 above 100 mV, similar pattern as at Site 2
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