Field Notes

Twitchell Rice: 2014-03-13 12:15:00 (DOY 72)
Author: Sara Knox
Others: Patty

Summary: Field drained. Cattails still growing in footprint. Data download. Measured instrument heights.

Twitchell Rice
2014-03-13

We arrived about 12:00 PDT. It was sunny, warm, and windy. The field was drained and there is a large patch of cattails growing up ~10 meters to the WNW of the tower. I downloaded the data while Patty cleaned the 7500 and 7700 and measured the instrument heights.

7700 Height: 320 cm
7500 Height: 325 cm

Patty also measured water table depth. Water levels were 58 cm below the top of the PVC pipe and the PVC pipe was stocking 36 cm above the surface.

7500 readings:
CO2 = 400 ppm (403 after cleaning)
H2O = 313 mmol m-3 (272 after cleaning)
signal strength = 81.44% (81.73% after cleaning)
sos = 345 m s-1

7700 readings:
CH4 = 1.90 ppm variable (1.93 after cleaning)
RSSI = 65% (70% after cleaning)

When I downloaded the camera data, I noticed that it had only taken one picture since we last downloaded data. Something to keep an eye on.

0 photos found

6 sets found

12 TW_met graphs found