Field Notes

<--2017-01-05 12:30:00 | 2017-01-31 11:25:00-->
Other sites visited today: Mayberry | Sherman Wetland | Bouldin Alfalfa | East End | Twitchell Alfalfa | Twitchell Rice | Tonzi | Vaira | Tonzi
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West Pond: 2017-01-17 13:00:00 (DOY 17)
Author: Daphne Szutu
Others: Elke Eichelmann, Kyle Hemes

Summary: Regular data collection, swapped sonic

We arrived at 13:00. It was cloudy, cool, with a light breeze. There were three researchers from Sacramento State in the area measuring water flow near the tower.

I collected met, camera, and GHG USB data. We cleaned the eddy flux and radiation sensors. I refilled the reservoir; it was 3/4 full.

We switched out the Gill sonic anemometer: sn 120907 came down and sn 120908 went up. The new anemometer has upgraded firmware to correct for the W bug. We made sure the N-orientation of the anemometer was the same between the old and new sensor. We spent some time leveling the sonic by adding washers between the sonic base and metal mount.

The 7500 read:
CO2 428.9 ppm
H2O 407.5 mmol/m3
T 8.5 C
P 101.8 kPa
SS 106.5 --> 106.9 after cleaning

The 7700 read:
CH4 2.17 ppm
RSSI 52.7 --> 80.6 after cleaning

We left at 13:45.

0 photos found

Graphs display:
8 sets found

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1 WP_DO graphs found

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14 WP_met graphs found

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5 WP_flux graphs found

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Can't check MBWPEESWGT_mixed
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1 WP_processed graphs found

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No data found for WP_arable.