Field Notes

Mayberry: 2014-06-26 10:15:00 (DOY 177)
Author: Cove Sturtevant
Others: Sara, Kathleen

Summary: Regular site visit and portable and permanent towers. Installed forerunner CO2 probe at permanent tower.

Mayberry
2014-06-26

Portable Tower
We arrived at the Low Veg portable tower site at about 10:15 PDT. Downloaded the data. Put bird spikes on sonic. Kathleen took water samples.

Sonic N at Low Veg site: 254Â° N magnetic.
Tower height (stationary): 4.1 m above berm

CO2: 398 ppm (401 after cleaning)
H2O: 669 mmol m-3 (634 after cleaning)
signal strength = 90.3% (91.7% after cleaning)
t: 24.5 Â°C
p = 101.4 kPa
sos = 344.6 m s-1
CH4: 1.95 ppm (2.1 ppm after cleaning)
RSSI: 36% (70% after cleaning)
Topped off reservoir.

Permanent Tower
All well. Collected data. Took water samples.

Installed forerunner CO2 probe (sn GP20140010) in open water channel 5 cm below surface. Adjusted program to read the CO2 and temp channels from this instrument. The CO2 channel was reading ~770 mV (equivalent to 3080 ppm CO2) which was reasonable given the recent water sample measurements. The temperature channel was reading 3100 mV (equivalent to 23.4 C).

7500 readings:
CO2: 390 ppm (same after cleaning)
H2O: 700 mmol m-3 (same after cleaning)
signal strength = 95.4% (96.2% after cleaning)
t: 22.4 Â°C
p = 101.4 kPa
sos = 345.5 m s-1

Current 7700 readings:
CH4 = 1.95 ppm (same after cleaning)
RSSI = 60% (74% after cleaning)
Topped off reservoir.
Met looked good.
Cleaned rad.

0 photos found

11 sets found

7 MB_flux graphs found