Field Notes

<--2011-04-15 00:00:00 | 2011-04-22 00:00:00-->
Other sites visited today: Vaira | Mayberry | Tonzi

Tonzi: 2011-04-15 12:00:00 (DOY 105)
Author: Joe Verfaillie
Others: Siyan (Sunny, Alex)

Summary: Serviced z-cams - advanced image collection one hour, Fixed unsetup DAC channels on tower LI-7500, changed co2 profile filters.

Tonzi
4/15/2011

I arrived about noon time PDT with Siyan (and Sunny and Alex). It was warm and sunny with some high thin clouds and a light breeze from the west. The ground is much drier but Tonzi’s pond is still full and the wells are still high. There are lots of flowers, but maybe not as much as last year, though it may still be early. The trees have put on lots of leaves, but maybe not as much as Vaira. Maybe about 70% complete.

I serviced the z-cams. All seemed well. I advanced the time on the cameras for the lengthening days. For z-cam one and two I changed the CR10X program from 900 and 1021 (3pm and 5pm) PST to 960 and 1081 (4pm and 6pm) PST. For z-cam three I changed the CR200 clock from 3:18 to 2:15 which makes the image start an hour later. The cameras time tag the images with their internal clocks.

Siyan noticed that the LI-7500 channels on the tower were both zero and I discovered that the DAC channels on the LI-7500 had not been setup. This is the LI-7500 that was recently returned from repair at Licor and probably had been reset to default settings. Two weeks of LI-7500 data lost from the tower top.

I changed the filters in the CO2 profile inlets and replaced two of the funnels. The filter at top inlet was really dirty but the others were okay. I left wrenches, spare filters and funnels in the computer box.

Tram was running.

Sensors at the tower top were okay. I cleaned a little bird poop off of the pyranometer.

Field Data

No tank data

Well Depth