Field Notes

Mayberry: 2021-02-04 10:30:00 (DOY 35)
Author: Daphne Szutu
Others: Robert

Summary: Regular data collection/cleaning, windy day, sheep grazing on levee, HMP power disconnected-fixed

2021-02-04
Mayberry

Robert and I arrived at 10:30 PST. It was a clear, sunny day but cold and breezy. There were sheep on the opposite levee. There were no sheep grazing on our levee, but there were 2 sheep fences that we moved aside temporarily to drive through. The staff gauge read 43 cm.

The floating boom had been blown almost 90 degrees to the west. I had to loosen the clamp to move it back so it was square with the tower before tightening it again. We also repositioned the upper boardwalk which had been blown loose by the wind.

I downloaded met, camera, USB GHG, and miniDOT data. I downloaded and cleared the FD chamber.

I had accidentally disconnected the HMP power during the last site visit instead of the fluorometer, so thereâ€™s no AirT or RH data for the last 2 weeks. I meant to bring in the fluorometer cable for testing the lab, but I forgot. I also forgot vials for Isabelâ€™s water samples, but Iâ€™m not sure if we need more samples here since the fluorometer has been removed and we are planning to install it at Hill Slough when they flood later this year.

Robert cleaned flux and rad sensors. We changed the miniDOT and water level desiccant. The reservoir was empty; Robert refilled it to Â¾ full.

LI-7500 readings:
CO2 413ppm
H2O 247ppm
T 13.0C
P 102.4kPa
SS 98-->99 after cleaning
LI7700 readings:
CH4 1.95ppm
RSSI 37--> 81 after cleaning

We left around 11:10 PST.

0 photos found

11 sets found

7 MB_flux graphs found