Field Notes

Sherman Wetland: 2019-01-18 10:10:00 (DOY 18)
Author: Daphne Szutu
Others: Dennis, Kuno, Camilo, Jiangong

Summary: Regular data collection/cleaning, swapped 7500 for calibration, some data drops in AirT/RH/NDVI

2019-01-18
Sherman Wetland

Dennis, Kuno, Camilo, Jiangong, and I arrived at 10:10. It was overcast, mild, and calm. We had to use Bryanâ€™s spare key to open the inner SW gate. There was standing water under the tower and the water level was 78 cm.

I downloaded met, cam, and USB GHG data. There were some spikes/drops in AirT/RH for a few days, from 2018-01-15 to 2019-01-17, but the data seem ok now. NDVIout had dropped out since 2019-01-11 22:00, but a sensor power cycle fixed this. Kuno cleaned the flux and rad sensors. We refilled the wash reservoir; it was 2/3 full. Looking at the data back in the lab, there was some 30-min spikes in w up to 4 m/s in the evening on 2019-01-10.

We swapped the LI-7500 for calibration: sn 75H-2180 came down and sn 0418 went up. I uploaded a new configuration file, updated the pressure coefficients, and reset the box.

LI-7500 readings (sn 75H-2180 --> sn 0418):
CO2 430ppm --> 430
H2O 580ppm --> 513
T 14.5C --> 14.6
P 102.8kPa --> 103.4 (seems high, should check pressure coefficients next time)
SS 97--> 97 after cleaning --> 95

LI7700 readings:
CH4 2.3ppm
RSSI 30 --> 83 after cleaning

We left at 10:35.

0 photos found

7 sets found

Can't check MBWPEESWGT_mixed
Can't check MBEEWPSWEPGT_cam
16 SW_met graphs found