Field Notes

<--2013-03-14 10:40:00 | 2013-03-28 10:45:00-->
Other sites visited today: Sherman Island | Twitchell Rice | West Pond | DWR Corn
Phenocam link: Searching...

Mayberry: 2013-03-21 11:00:00 (DOY 80)
Author: Cove Sturtevant
Others: Susie

Summary: New tule growth along margins. 7700 still had line lock (woohoo!). Did not replace. Collected water samples. All well.

Mayberry
2013-03-21

Permanent tower
We arrived about 11:00 PDT. It was warm and breezy out. There is some new tule growth along margins, spring is on its way! Site visit today was mainly to check the 7700, as it has been losing line lock in previous weeks. We must have done something right last week tightening all the connectors because the line lock was still engaged and the readings good. I had brought a replacement 7700 in the event the line lock was lost again, but since the instrument was good I left it be. We cleaned the flux instruments and collected water samples.

7500 readings:
CO2: 356 ppm
H2O: 405 mmol m-3
agc: 37.9 (adjusted to 30.0)

Current 7700 readings:
CH4 = 1.9 ppm
RSSI = 52 (adjusted to 84 after cleaning)
Topped off the reservoir.

MET looked good.

1 photos found

MB_autocam_20130321_1045.jpg ( 2013-03-21 10:45:03 ) Full size: 1920x1440
Hawk on 7700