Field Notes

East End: 2023-05-17 12:00:00 (DOY 137)
Author: Daphne Szutu
Others: Robert

Summary: Regular data collection/cleaning, rotating shadowband not spinning--fixed, patchy green-up

2023-05-17
East End

Robert and I arrived at 12:00 PDT. It was warm and sunny with some breeze. The tules by the road are happy, tall, and super green, but the tules and cattail in the wetland have a slower start. It's about 15% green but very patchy. The staff gauge read 47cm.

There was a spiderweb across the boardwalk at the precip bucket when we arrived. Almost got a face full of web. Robert: "Comes out of nowhere!"

The rotating shadow band was not spinning when we arrived. I power cycled it and Robert pushed on the band. I'm not sure which action fixed it, but it was spinning when we left.

I downloaded met, cam, USB GHG, and miniDOT data. The eddy clock was fast by about 45sec, so I changed it -45sec around 11:20 PST. There was a 7700 error afterwards, probably because it was trying to overwrite data that already existed. I pulled the USB, deleted the files with the last minute of data, and reinserted the USB. The USB Status = Error, so I reset the box. All seemed ok afterwards. I confirmed the USB was logging and the 7700 was connected.

Robert cleaned flux and rad sensors. The reservoir was pretty full (yay, we fixed the leak!) so we did not add more water.

The 7500 read: 416ppm CO2, 665mmol/m3 H2O, 27.2C, 101.2kPa, 96SS – 101 after cleaning
The 7700 read: 2.0ppm CH4, 26RSSI -- 82 after cleaning

We left at 12:30 PDT.

2 photos found

20230517EE_PatchyGreen.jpg ( 2023-05-17 12:03:25 ) Full size: 1920x1440
Patchy green up, with roadside plants greening up much earlier than the interior plants

20230517EE_GreenEdge.jpg ( 2023-05-17 12:03:30 ) Full size: 1920x1440
Patchy green up with plants near the road and the boardwalk greening up faster than interior roads