Field Notes

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Other sites visited today: Sherman Island | Twitchell Rice | West Pond | DWR Corn

Mayberry: 2012-12-14 11:30:00 (DOY 349)
Author: Cove Sturtevant
Others: Laurie

Summary: Replaced fan in Vaisala rad shield, downloaded data, took water samples, W_CO2_2 high?

Mayberry
2012-12-14

Permanent tower
We arrived about 11:30 PST. It was cold and cloudy about 7°C, very mild breeze. There are alternating patches of totally golden tules and other substantially green patches with just the upper parts golden. I checked the tower while Laurie went out to the channel to collect water samples. The fan inside the Vaisala T/RH probe radiation shield was dead, so I swapped in a whole new shield with working fan. After checking the tower I went out to the channel to download the MET data and clean all the radiation instruments (which were pretty dirty).

Current 7700 readings:
CH4 = 2.31 ppm
RSSI = 39 (bumped to 84 after cleaning)
Refilled reservoir (90% full already)

7500 readings:
CO2: 411 ppm
H2O: 358 mmol m-3
agc: 43.8
p = 101.2 kPa

MET looked good, although W_CO2_2 looked high (~5000) compared to the W_CO2_1 (~1870). The water level in the channel was a few cm higher than usual, so the CO2 probes were well underwater. I didn’t really have a good memory baseline for this sensor, so just reporting to see if this value was normal. Otherwise, MET looked good.

p.s. Joe's new boardwalk out to the autocam is fabulous. It's like a beach party now.

0 photos found

11 sets found

7 MB_flux graphs found