Field Notes

Sherman Barn: 2020-02-06 09:10:00 (DOY 37)
Author: Daphne Szutu
Others: Camilo

Summary: Regular data collection/cleaning, green grass, no cows, swapped 7500 for calibration, measured well level, few photos on camera card

2020-02-06
Sherman Barn

Camilo and I arrived at 9:10 PST. It was a clear, calm, and cool day. The grass is green and getting taller, especially in the area between the tower and our parking spot. We didnâ€™t see any cows on the field, although we disturbed a group of brown ducks as we walked into the field.

Camilo cleaned flux and rad sensors and took spectral measurements. The wash reservoir was full. I downloaded met, camera, gamecam, and USB GHG data. I swapped the desiccant for the water level sensor. We swapped the LI-7500: sn 75H-2668 came down and sn 75H-2669 went up. I uploaded a new calibration file, updated the pressure coefficients, and reset the box.

Camilo measured water level:
Distance from top of well to water level: 88.1cm (2.89ft)
Distance from top of well to ground: 24.7cm (0.81ft)
Distance from top of well to sensor: ??
Sensor psi reading: 0.653 psi ~ 46cm

LI-7500 readings (sn 75H-2668 --> sn 75H-2668 after cleaning --> sn 75H-2669):
CO2 479ppm --> 476 aft
er cleaning --> 489
H2O 269ppm --> 330 after cleaning --> 316
T 8.1C --> 8.6 after cleaning --> 10.5
P 102.5kPa --> 102.5 after cleaning --> 102.3
SS 96--> 102 after cleaning --> 101
LI7700 readings:
CH4 4.1ppm
RSSI 29--> 72 after cleaning

We left at 9:45 PST.

Back in the lab, there were only a few days of photos on the camera card. Running the card through Recuva did not unearth any new photos. The card is old and should probably be replaced

1 photos found

shermanbarn_2020_02_06_091506.jpg ( 2020-02-06 09:16:24 ) Full size: 1296x960
Camilo cleaning