Field Notes

Mayberry: 2019-10-31 12:00:00 (DOY 304)
Author: Joe Verfaillie
Others: Camilo

Summary: Wind damage, swapped 7500, retested tipping bucket - ok, lots of spider webs on eddy sensors, water level still very low.

Mayberry
2019-10-31

Camilo and I arrived at 12:00. It was clear, sunny and mild with little wind. The water level was -3cm. The hole they dug below the staff gauge last time had some water in it and it was 3cm below the bottom of the gauge. The ground level is at about 10cm on the staff gauge. The DF Robot water level sensor is half buried in the mud.

The wind earlier this week had blown the two upper boardwalks across the scaffolding lifting and tilting them. The water sensor boom had also rotated about 100 degrees to the east. We replaced the boardwalks and put the boom back in its usual position.

Seems I missed downloading the CR1000 met data. I changed the file name in LoggerNet but didn't actually collect the data.

The 7700 read: 2.02ppm CH4, 36RSSI â€“ 80 after cleaning.
There were lots of spider webs on the eddy sensors. The wash reservoir was about half full.

We swapped the 7500: sn 0042 came off and sn 1594 went on
Before: 407.1ppm CO2, 220.4mmol/m3 H2O, 16.8C, 102.3kPa, 101.2SS
After: 420.5ppm CO2, 174.3mmol/m3 H2O, 17.2C, 102.2kPa, 99.9SS

We retested the tipping bucket after adjusting it last week. We got 102 tips â€“ good enough.

Camilo collected water samples for Isabel at 11:22 PST

The camera may have been turned to the south by the wind. I adjusted it but the mounting bolt is frozen and can't be tightened.

We left at 12:30

1 photos found

20191031MB_WindDamage.jpg ( 2019-10-31 00:00:00 ) Full size: 1920x1440
The winds blew away the tower board and moved the boom with the water