Wiki Markup
Dan Rajewski (in Ames)
Summary: Stations 1-4 operational, Russ and Dan cleared the weeds out of the access paths and around the base of each flux tower and wind cube sites. Kris and Jimmy serviced the ISU sites and the wind cubes
clear/hazy skies hot and muggy, generally SW wind, much less wind speed in the morning and early afternoon (turbines hardly turning 10:30-13:30)
Vdsm:
Vdsm: 13.5-13.8 V during day, down to 12.4 V at night,
P: ok, pressure steady around 974 mb overnight through early morning; dropping to ~971 mb by early evening
Wiki Markup
stn 2 cooler than stn 4 by 1.0 degree from 23:00-0:00
stn 1 warmer than other sites by 1.0 degree from 0:30 to 3:00
stn 4 has error (wet sensor?) from
stn 1 warmer than other sites by 1.0 degree from 0:30 to 3:00
stn 4 has error (wet sensor?) from 6:15-6:30
day: stn 2
day: stn 2 1.0 degrees warmer than other sites in mid morning and early evening
stn 2 evening
stn 2 1.5-2.0 degrees warmer than other sites in late morning-late afternoon
stn 4 afternoon
stn 4 0.5 degrees cooler than stns 1 & 3 from 15:00-19:00
RH.2m: 85-100% nighttime; dropping to 70-80% by afternoon
night: stn 4 5% RH higher than other sites; stn 4 has error (due to wet sensor?) from afternoon
night: stn 4 5% RH higher than other sites; stn 4 has error (due to wet sensor?) from 6:00-6:15
morning/evening stn 4 10% RH higher than stn 2, 5% RH higher than stns 1,3
afternoon stn 4 \
afternoon stn 4 ~10-15%RH higher than stns 2, and \ ~5-7%RH higher than stn 1 & 3 \& 3 [moisture effects due to mature corn with larger Potential evapotranspiration at Stn 4?\]
]
H2O.2m: ok, nighttime from 28 to 20 g/m^3, up to 27-29 g/m^3 by mid afternoon
night: stn 1 about afternoon
night: stn 1 about 1.0 g/m^3 drier than other sites from 20:30-22:30 \ [July 18\]
stn 2 about 1 g/m^3 more moist than stn 3 & 4 from ]
stn 2 about 1 g/m^3 more moist than stn 3 & 4 from 11:00-0:30
stn 2 & 3 about 0.5 g/m^e drier than sites 2 & 4 from 0:30 to 2:30
stn 4 about 0.5 g/m^3 more moist than other sites from 2:30 to 4:00
Wetness: dew formation from 21:00 (July 18) through 7:00, sensor dry by
stn 2 & 3 about 0.5 g/m^e drier than sites 2 & 4 from 0:30 to 2:30
stn 4 about 0.5 g/m^3 more moist than other sites from 2:30 to 4:00
Wetness: dew formation from 21:00 (July 18) through 7:00, sensor dry by 9:00
T.10m: ok, range of 24 to 33.5 degrees
night: stn 1 about 0.5 degrees warmer than other sites from 1:00-2:00
stn 2 about 0.5 degrees cooler than other sites from 3:30-5:00
day: stn 1 0.5 degrees warmer than other sites in morning/ late afternoon and 1.0 degree warmer in early to middle afternoon
...
H2O.10m: ok, before midnight stn 4 about 0.5 g/m^3 more vapor than other sites
nighttime: stn 2 0.3-0.5 g/m^3 more moist than other stns
day: close agreement at all sites
Spd.10m: ok, before midnight stn 2 about 0.5-0.7 m/s higher than other sites
daytime: stn 4 about 1.0 m/s less than other sites from 10:30 to 14:30; and 0.5 m/s less from 16:30-18:00
Dir.10m: ok, WSW flow before midnight, slightly WNW before changing to E and veering to SSE by sunrise
SSW to SW morning and early afternoon, hovering to S or SSW rest of the period
T.10m - T.2m: ok, night: most of time a few tenths within each site except for 0.5-0.75 degree cooler at 10 m vs. 2m for stn 1 than for other sites from 1:00-2:30
day: stn1 nearly zero thermal gradient, stn 3 & 4 about 1.0 to 1.5 degree warmer at 2m vs. 10 m, stn 2 about 2.0-3.0 warmer at 2 m vs. 10 m
H2O.10m - H2O.2m: ok, stns 2 & 3 have earlier nighttime stabilization of moisture gradient vs. stn 1 & 4
day: stn 4 largest negative moisture gradient (4.0 g/m^3 larger H2O at 2 m vs. 10 m), other sites about 2.0 to 3.0 more vapor at 2m vs. 10 m
spd.4.5m: ok, see comments of Spd.10m, similar differences but not identical in intensity and duration to spd.10m, winds only reaches 2.5 m/s max in daytime
Wiki Markup
w.4.5m: ok, night: (20:00-22:00 \ [July 18\]) stn 1 & 4 have least w<0 \ ~-0.02 m/s stn 2 & 3 are about \ -0.05 m/s
from
from 3:00-6:30 stn 4 more descent than other sites
...