Field Notes

Sherman Wetland: 2019-07-25 10:35:00 (DOY 206)
Author: Daphne Szutu
Others: Dennis, Alex, Josep Penuelas

Summary: Regular data collection/cleaning, a lot of bird poop, swapped LI-7500A for calibration, downloaded miniDOT

2019-07-25
Sherman Wetland

Dennis, our visitor Josep Penuelas, Alex, and I arrived at 10:35. It was mild and sunny with scattered clouds and a nice breeze. The water level is still low, and the tules and cattails on dry land were yellowing. The water level was 41 cm.

We cleaned the flux and rad sensors. Alex also cleaned out the precip gauge funnel. There was bird poop everywhere. The wash reservoir was empty; we refilled it. I downloaded met, camera, USB GHG, and miniDOT data. We swapped the desiccant for the miniDOT and for the water level sensors. We also swapped the LI-7500A for calibration: sn 75H-2150 came down and sn 0041 went up. I uploaded a new configuration file, updated the pressure coefficients, and reset the box.

LI-7500 readings (sn 75H-2150 --> sn 0041):
CO2 425ppm --> 422
H2O 735ppm --> 687
T 26.4C --> 27.0
P 101.3kPa --> 101.8
SS 97 --> 98
LI7700 readings:
CH4 2.2 ppm --> 2.0 after cleaning
RSSI 10--> 83 after cleaning

We left at 11:30.

1 photos found

siwetland_2019_07_24_131405.jpg ( 2019-07-24 13:27:14 ) Full size: 1296x960
Starlings on the tower