Field Notes

East End: 2019-07-25 13:50:00 (DOY 206)
Author: Daphne Szutu
Others: Dennis, Alex, Josep Penuelas

Summary: Regular data collection/cleaning, swapped PARin sensor, swapped LI-7500A for calibration, downloaded miniDOT

2019-07-25
East End

Dennis, our visitor Josep Penuelas, Alex, and I arrived at 13:50. It was sunny and warm, with a surprisingly clear view of Mt. Diablo. There were a few dense cirrus clouds. The water level was 45 cm.

I downloaded met, camera, USB GHG, and miniDOT data. Alex and Dennis cleaned the flux and rad sensors. PARin had been spiky since mid-June, so I swapped it out: sn 110340 came down and sn 10162 went up. After the swap, the sensor read 9.9 mV. We also swapped the LI-7500A for calibration: sn 0035 came down and sn 75H-2176 went up. I uploaded the new config file, updated the pressure coefficients, and reset the box. We dropped the water level sensor desiccant tube, so need to come up with a replacement next time.

LI-7500 readings (sn 0035 --> sn 0035 after cleaning --> sn 75H-2176):
CO2 435ppm --> 425 after cleaning --> 406
H2O 706ppm --> 550 after cleaning --> 590
T 35C --> 34.5 after cleaning --> 35.2
P 101.1kPa --> 101.1 after cleaning --> 101.0
SS 94--> 96 after cleaning --> 96
LI7700 readings:
CH4 2.0ppm
RSSI 34--> 77 after cleaning

We left at 14:45.

1 photos found

EE_autocam_20190725_1316.jpg ( 2019-07-25 13:16:21 ) Full size: 1920x1440
Daphne on site