Field Notes

<--2012-10-25 10:15:00 | 2012-11-08 10:15:00-->
Other sites visited today: Sherman Island | Twitchell Rice | West Pond | DWR Corn
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Mayberry: 2012-10-30 08:45:00 (DOY 304)
Author: Jaclyn Hatala
Others: Joe

Summary: Swapped LI-7550 boxes and IRGAs with water issues, Adjusted pressure transducer height to bring it into range

We arrived at the Mayberry wetland around 8:45 local time to a light breeze and cool temperature. We saw a coyote on the levee on the way in and a flock of eight huge tundra swans flew by close overhead while we were at the tower. The cattails continue to turn brown.

We swapped the LI-7550 box (sn 0666) and head (sn 2180), which had been reading strange values due to corrosion from moisture on the circuit board inside the box. Joe will send it back to Li-Cor for repair. After the swap (new box is sn 0614 and head is sn 2150) all the configuration settings (time, file save formats, etc.) all looked good. We filled the LI-7700 reservoir. We put a desiccant pack inside the new 7550 box in the field to try to absorb some moisture.

There were several wasps in the datalogger box, so we cleaned them out and put more putty sealing the hole with the wires to prevent further insect invasion.

The new water pressure transducer installed last week was reading INF, and when Joe lifted it eight inches up in the water column it began to read properly, so it was likely just out of range.

CO2 = 428 ppm
H2O = 600 mmol/m3
CH4 = 2.0 ppm
SOS = 341 m/s
RSSI = 75

1 photos found

MB_autocam_20121030_0915.jpg ( 2012-10-30 09:15:02 ) Full size: 1920x1440
Field work