Field Notes

East End: 2018-11-01 12:35:00 (DOY 305)
Author: Daphne Szutu
Others: Dennis, Kuno

Summary: Regular data collection/cleaning, downloaded miniDOT, tested tipping bucket, swapped 7700

2018-11-01
East End

Dennis, Kuno, and I arrived at 12:35. It was sunny with some thin clouds and hazy at the horizons. I forgot to check water level.

Dennis topped off the wash reservoir. Kuno cleaned the flux and rad sensors.

We cleaned and re-tested the tipping bucket sn 50229-112. Last week, we got 98 tips and adjusted the set screws by one half turn. We connected the bucket to a CR23x and dribbled 475ml of water through it. This should result in 100 tips â€“ we got 93 tips. We didnâ€™t make an adjustment and need to retest again.

I collected met, camera, USB GHG, and miniDOT data. We werenâ€™t sure if we needed to turn the camera off manually before ejecting the SD card, so we just ejected the card as is, moved the files, and then put the card back in without turning it on/off manually. NDVI in was NAN 10/4-10/18, but seems fine now. I checked the sensor connection at the datalogger and it seemed fine.

We swapped the 7700 to bring back to the lab for a power board replacement: sn TG1-0421 came down and sn TG1-0423 went up. I confirmed that the 7700 was connected, the heater/wash settings looked reasonable, and the correct Licor GHG columns were selected.

LI-7500 readings:
CO2 423ppm
H2O 567ppm
T 23.6C
P 102.0kPa
SS 94--> forgot to write after cleaning

LI7700 readings:
(sn TG1-0421 --> sn TG1-0421 clean --> sn TG1-0423)
CH4 2.14ppm --> 2.14 --> 2.17
RSSI 46 --> 74 --> 77

We left around 13:05.

0 photos found

11 sets found

14 EE_met graphs found