Field Notes

Mayberry: 2013-06-18 10:40:00 (DOY 169)
Author: Cove Sturtevant
Others:

Summary: Changed 7550 time to ETC/GMT +8. Added CO2 signal strength to output. All well.

Mayberry
2013-06-18

I arrived about 10:40 PDT. It was warm, sunny and windy. The site looks the same, very green with a bit of standing old plant material mixed throughout.

I downloaded the GHG data and changed the time format to ETC/GMT +8. The present confusion in this time format was due to the offset indicating the hours to add to get back to GMT, rather than the more intuitive offset from GMT. Time was changed at 09:49 PST. I noted that for the time settings, the time does not stay changed unless you hit Apply. It is not enough to just hit Ok and exit out the window.

I also added the CO2 signal strength to the output. We are now recording Diagnostic Value #1 and CO2 Signal Strength at all towers with the 7550.

7500 readings:
CO2: 380 ppm (377 after cleaning)
H2O: 560 mmol m-3 (540 after cleaning)
signal strength = 83.9% (84.1% after cleaning)
p = 101.6 kPa
t: 21.0 C
sos = 344.6 m s-1

Current 7700 readings:
CH4 = 1.86 ppm (1.9 after cleaning)
RSSI = 30 (adjusted to 89 after cleaning)
Reservoir was full.

Sensors were a bit dusty. I gently wiped off the sonic transducers of accumulated grit and spider webs.

MET looked good.

0 photos found

11 sets found

7 MB_flux graphs found