Field Notes

Bouldin Corn: 2021-02-18 15:00:00 (DOY 49)
Author: Daphne Szutu
Others: Carlos

Summary: Regular data collection/cleaning, field still flooded but water level is dropping

2021-02-18
Bouldin Corn

Carlos and I arrived at 15:00 PST. It was calm and mild with streaky clouds. The field is still flooded but the water level has gone down since the last visit. There was no standing water under the tower but the soil was still very soft. The power and met enclosures were unlatched when we arrived but everything seemed ok. There were no hunters at the club and the red gate was open.

I downloaded met, camera, and USB GHG. I forgot to bring a replacement CF card so I moved the camera card files onto the laptop and then reinserted the blank card. I downloaded the FD data and cleared its memory. I downloaded the PA data and restarted the sensor.

Carlos cleaned flux and rad sensors. He reported the SWin and LWin sensors were dirty. The wash reservoir was 10% empty; we refilled it. I left a prophylactic mothball in the met datalogger box.

The water level from the top of the well was 1.90 feet.

LI-7500 readings:
CO2 430ppm
H2O 260ppm
T 15.6C
P 102.6kPa
SS 101-->102 after cleaning
LI7700 readings:
CH4 2.2 after cleaning
RSSI 55-->75 after cleaning

We left at 15:35.

3 photos found

20210218BC_Arables.jpg ( 2021-02-18 00:00:00 ) Full size: 844x1125
Arables over flooded field with ice halo around sun in the background

20210218BC_FluxSensors.jpg ( 2021-02-18 00:00:00 ) Full size: 1500x1125
Eddy flux sensors at Bouldin Corn over flooded field

20210218BC_Sensors.jpg ( 2021-02-18 00:00:00 ) Full size: 1500x1125
Tower-top flux and radiation sensors over a flooded field with an ice halo around the sun in the background