Field Notes

<--2013-11-06 14:30:00 | 2013-11-25 15:00:00-->
Other sites visited today: Sherman Island | Mayberry | Twitchell Rice | DWR Corn | West Pond
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Twitchell Alfalfa: 2013-11-21 13:15:00 (DOY 325)
Author: Cove Sturtevant
Others: Laurie

Summary: Alfalfa mown, bales removed. Data download.

Twitchell Alfalfa 2013-11-21 We arrived about 13:15 PST. It was sunny, cold, and WINDY. The recent rains gave the tower a nice bath. No water in the well, though. The alfalfa has been mown and the bales removed from the site. We found a massacred field transect tape near the tower... We downloaded data and cleaned the flux instruments. The camera was off. We added a zip-tie to better secure the 7700 analyzer (its mount allowed it to rotate off-vertical in high winds). 7500 readings: CO2 = 392.6 ppm (400 after cleaning) H2O = 280 mmol m-3 (220 after cleaning) SS = 74.5% (75.4% after cleaning) T = 15.75 C p = 101.5 kPa sos = 343.7 m s-1 7700 readings: CH4: 2.1 ppm (1.93 ppm after cleaning) RSSI: 6% (80% after cleaning) Reservoir was empty refilled. MET looked good.

0 photos found

Graphs display: days

7 sets found

Can't check TA_met
11 TA_met graphs found

Can't check TA_rad
3 TA_rad graphs found

Can't check TA_flux
5 TA_flux graphs found

Can't check TA_soilco2
7 TA_soilco2 graphs found

No data found for TA_arable.
1 TA_cam graphs found

Can't check TATWBABCSB_cam