Field Notes

<--2015-11-11 13:00:00 | 2015-12-08 14:40:00-->
Other sites visited today: Mayberry | Twitchell Rice | East End | West Pond
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Twitchell Alfalfa: 2015-11-25 12:19:00 (DOY 329)
Author: Patty Oikawa
Others: Sara Knox

Summary: Clipped around sensors, swapped IRGA, all looked good

Sara and I arrived at 12:19pm. Clear skies, cold and breezy. Sara clipped around the sensors and did Rsoil (collar 2 was done 2x) and Spectral measurements. Collar 3 is missingâ€”replace next time. We did not do veg height since it had just been harvested (~5cm).
I swapped the IRGA (swapped sn 75H-2150 for sn 1594) and downloaded data. The solar panels were very dirty, I think birds are roosting on the new diffuse PAR sensor mounted over the panels. If there is no easy way to lower the new PAR sensor then we will need a ladder at the site to access it. We also need a longer screw for affixing the camera to the pole, it no longer penetrates the wood.

7500:
CO2: 396.51 ppm After swap 404.1
H2O: 283.4 mmol m-3 After swap 293.4
SS: 97.56%. After swap 101.87
T: 13.35 C After swap 14.42
P: 101.18 kPa After swap 101.23
SOS: 341.25 m s-1 After swap 341.51

3 photos found

TA_autocam_20151125_1215.jpg ( 2015-11-25 12:15:03 ) Full size: 1920x1440
Sara on site