Field Notes

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Other sites visited today: Gilbert Tract | West Pond
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East End: 2022-02-18 15:25:00 (DOY 49)
Author: Daphne Szutu
Others: Joe

Summary: Regular data collection/cleaning, higher water level, 7700 spray nozzle offset--fixed, reinstalled pi-cam

2022-02-18
East End

Joe and I arrived around 15:25 PST. It was mild with scattered thin clouds and a gray smudge along the northern and eastern horizons. Joe noticed the wind was coming from the east. We could see smoke from 2 burn piles coming from our SE. The staff gauge read 62cm.

The reservoir was almost empty. We refilled it and then tested the 7700 spray: it was not seating properly, so the water jet was not hitting the mirror. Joe adjusted the spray nozzle.

Joe reinstalled the pi-cam we removed last time. This camera now has the updated program that takes both auto WB and fixed WB photos (r=1.4, b=1.3 gains). Next time we need to bring the proper pi-cam enclosure screws; Joe used some ill-fitting screws for now to get the camera up.

I downloaded met and USB GHG data (no camera data b/c the pi-cam was back in the lab). I uploaded a new met datalogger program to fix a typo in the Bowen-variance calculations. I accidentally used [Pa]=[kPa]/1000 initially, but now it’s corrected to [Pa]=[kPa]*1000.

LI-7500 readings:
CO2 416
H2O 310
T 22.0C
P 102.1kPa
SS 99 --> 107
LI7700 readings:
CH4 2.13
RSSI 32 --> 83 after cleaning

We left at 15:50 PST to head back to Gilbert Tract to pick up Ari and Oscar.

0 photos found

11 sets found

14 EE_met graphs found