Field Notes

<--2005-01-27 10:50:00 | 2005-02-08 10:55:00-->
Other sites visited today: Vaira | Tonzi | Vaira
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Tonzi: 2005-01-27 11:22:00 (DOY 27)
Author: Ted Hehn
Others: Jessica, Dennis, James, Matthias

Summary: Swapped Tower PC case, Tower co2 profile pump not running - fuse replaced, Tower HMP fan dead - broken wire fixed, Changed multiplier on tipping bucket.

When: Thurs, 27Jan05 JD-27
Where: Tonzi/Vaira Ranches
Who: Ted Hehn, Jessica, Dennis, James & Matthias
Weather: Cool and overcast with low clouds. Site very wet

Trip Purpose General site visit

Tonzi Ranch:

Tower: Remove tower PC enclosure and replace with unit that has PC enclosure lid securely fastened to folding shelf.

Change filter element on T&RH probe at met station at base of tower

Pump tower CO2 profile system was not running. The 2 amp fuse for the pump motor was blown. I replaced it with a 2.5 amp fuse.

Tower T&RH aspirator fan not running. Discovered broken power lead and repair. Ok - fan now operational.

Run pre-zero/span gasses on LI800 sn AKC-0479. Scrubbed nitrogen yields values from -1.5 to +1.5. Run 428.7 ppm span gas yielding 430 ppm relatively constant.

Note that the sample stream temperature from a thermocouple is at 25.5 while the cell temp indicated by a thermocouple is at 51.26 and the LI800 interface indicates a temp of 52.6.

Floor:

14:00 Change precip multiplier on CR23x6 from 0.0254 to 0.254

Field Data

No tank data

No TZ Well data found

No TZ Moisture Point data found

No VR Moisture Point data found

No TZ grass heigth found

No VR grass heigth found

No TZ Tree DBH found

No water potential data found

No TZ Grass Biomass data found