Field Notes

Twitchell Alfalfa: 2013-12-06 10:20:00 (DOY 340)
Author: Cove Sturtevant
Others: Sara, Joe

Summary: Alfalfa dormant. Need to replace LED sensor. Otherwise, good.

Twitchell Alfalfa
2013-12-06

We arrived about 10:20 PST. It was sunny, cold, and calm. The alfalfa is not growing. There were a ton of geese in the adjacent field.

I checked the tower and downloaded data while Sara did spectral and Joe clipped the remaining uncut alfalfa under the radiation boom.

7500 readings:
CO2 = 423 ppm (434 after cleaning)
H2O = 171 mmol m-3 (183 after cleaning)
SS = 70.9% (75.0% after cleaning)
T = 9.2 C
p = 102.3 kPa
sos = 336.0 m s-1

7700 readings:
CH4: 2.75 ppm (same ppm after cleaning)
RSSI: 24% (83% after cleaning)
Reservoir was full with some ice.

Cleaned radiation instruments. Rad measurements good except for LED sensor which we still need to figure out.

MET looked good. No water in the well.

0 photos found

7 sets found

Can't check TA_met
11 TA_met graphs found