Field Notes

Twitchell Rice: 2017-03-15 11:35:00 (DOY 74)
Author: Daphne Szutu
Others: Elke Eichelmann, Kyle Hemes

Summary: Regular data collection/cleaning, swapped 7500

2017-03-15
Twitchell Rice

We arrived at 11:35. It was partially overcast and cool with a light breeze. The rice field is drained but still muddy.

There are ants in the datalogger box so we put in fresh moth balls. The wash reservoir was almost full and we topped it off.

We swapped Li-7500: sn 75H-2182 came down and sn 75H-2150 went up. We uploaded the new config file and updated the pressure coefficients.

We cleaned the EC and radiation sensors and collected the USB GHG, met, and camera data. The new camera card moves the photos to the laptop faster than the previous card.

LI7500 readings:
CO2 419.76 umol/mol --> 418.01 after swap
H2O 602.5 mmol/m3 --> 659.2 after swap (seems high?)
T 19.1 Celsius --> 19.7 after swap
P 102.3 kPa --> 102.3 after swap
SS 83.8 -> 96.5 after swap

LI7700 readings:
CH4: 1.98
RSSI: 38.7 -> 69.5 after cleaning

We left at 12:10.

0 photos found

6 sets found

12 TW_met graphs found