Field Notes

<--2015-06-18 09:00:00 | 2015-07-09 12:45:00-->
Other sites visited today: Twitchell Rice | East End | West Pond | Twitchell Alfalfa
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Mayberry: 2015-06-25 12:30:00 (DOY 176)
Author: Cove Sturtevant
Others: Joe, Sara

Summary: Data download. Lots of site maintenance.

Mayberry
2015-06-25

We arrived at about 12:30 PDT. Breezy, sunny, and hot. Site is a mix of green and dead vegetation. There was a blowdown of the cattail patch immediately to the west of the tower.

We downloaded data and did several items of maintenance.
Cleaned water sensors and downloaded miniDOT data.
Swapped out two ForeRunner CO2 probes to better protect the corroding connectors. We couldnâ€™t remove the connector on the top FR probe (sn GP20140010), and pulled the sensor for repair. Swapped middle FR probe (removed sn GP20140026, installed sn GP20140025). Swapped bottom FR probe (removed sn GP20140023, installed sn GP20140024). The probes swapped in have their connectors painted and junction taped.
Raised the DO sensor in the tules, it was resting on the bottom due to the blowdown.
Replaced 7700 reservoir tubing.
Swapped out partial Vaisala radiation shield for complete one.
Checked level of flux instruments â€“ ok.
Installed TE525L rain gauge bucket previously at Sherman site (sn 40415-1006) and tipped a few times to test it.
Uploaded new 23x MET program (v111).

Cleaned flux instruments and radiometers.

Readings
CO2: 400 ppm (408 after cleaning)
H2O: 780 mmol m-3 (710 after cleaning)
signal strength = 91.9% (96.8% after cleaning)
p = 101.3 kPa
t: 29 Â°C
sos = 350.3 m s-1
CH4: 1.97 ppm
RSSI: 42% (70.6% after cleaning)
Topped off reservoir.

0 photos found

11 sets found

7 MB_flux graphs found