Field Notes

<--2013-01-30 12:30:00 | 2013-02-21 11:40:00-->
Other sites visited today: Mayberry | Twitchell Rice | West Pond | DWR Corn

Sherman Island: 2013-02-14 09:15:00 (DOY 45)
Author: Cove Sturtevant
Others: Sara

Summary: Water under bridge low. Typical field work. Swapped out Soil CO2 moisture probe #3, readings better. All A-ok.

Sherman
2013-02-14

We arrived about 09:15 PST. It was a mild morning, 11.5 °C, with a light wind and clear skies. The water under the bridge was very low, with only a few parts of standing water. The field continues to have a short green grass layer with bare spots.

I downloaded data, did general tower maintenance, and did spectral later while Sara did moisture point, well depth, soil respiration, and swapped out soil moisture sensor #3 in the Soil CO2 system. Readings from this sensor looked more similar to the other moisture sensors after the swap.

LGR readings: 8:17, 22.71 °C, 114.1 Torr (adjusted to 146.4 Torr), 13.82 us, 10 Hz, 2.28 ppm

7500 readings:
CO2: 17.97 mmol m-3 (bumped to 18.0 after cleaning)
H2O: 330 mmol m-3 (bumped to 420 after cleaning)
diag: 248
p = 102.5 kPa
sos = 340 m s-1

SoilT_6 (associated with CO2 probe #6) is still reading –INF but Sara did a regression of this sensor with the other CO2 probe thermocouples before it went out and found a very nice correlation. Therefore, she deemed it better to leave the CO2 probe undisturbed and fill the missing temperature measurements with the regression.

0 photos found

7 sets found

No data found for SI_mp.
11 SI_met graphs found