Field Notes

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Tonzi/Vaira: 2003-11-27 09:00:00 (DOY 331)
Author: Ted Hehn
Others:

Summary: CR10X2 needs new battery, fixed grounding on CR10X2, CR23X3 and muxes

When: Thr, 27Nov03, JD-331
Where: Tonzi/Vaira Ranches
Who: Ted Hehn
Weather Clear & Cool
Trip Purpose: General site visit

Tonzi Ranch:

CR10X4 has quit. Battery needs replacing.

CR10X2 has intermittent over-range failure—begin diagnostics:

  • CR23X3 gnd post bonded to ground rod
  • Power/Power return leads are jumpered from 23X3 to 10x2 providing a ground bond to 10x2—not good.
  • Power/return leads jumpered from cr10x2 to AM25T mux to provide mux with gnd bond.
  • Another lead from cr10x2 gnd post to AM25T gnd post exists--- forms ground loop—this connection was loose and may have been the culprit!!! -- Remove it completely.
  • Lead between 23x gnd and MD9 was also removed.

All ground loops corrected. Problem may cease.

Moisture measurements:

Depth 1 2 3 4
Tower 11.4 12 17.6 10.7
11.4 12 15.7 11.3
Floor SE of site 28.9 26.1 13.8 8
30.1 25.8 13.5 7.7
Floor SW of site 10.2 19.9 5.2 6.3
Jianwu transect E to W
A 13.6 23.2 12.7 8.5
B 16.2 12.5 10.8 8.8
C 23.8 26.1 6.3 8.2
D 15.6 19 12.7 6
E 13.4 17.6 16.5 13.8
F 8.5 4.3 13.5 8.2

Vaira Ranch: Download all data—all else appears well.

0 photos found

Graphs display:
16 sets found

No data found for TZ_Fenergy.
11 TZ_tmet graphs found

Explore the graph:Tonzi Tower Met: Temperature and Power in a new window

Explore the graph:Tonzi Tower Met: Solar Radiation in a new window

Explore the graph:Tonzi Tower Met: IRT Sensors in a new window

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Explore the graph:SRS PRI/NDVI in a new window

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No data found for TZ_soilco2.
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3 TZ_mixed graphs found

Explore the graph:Tonzi PPT in a new window

Explore the graph:Tonzi CO2 and H2O Densities in a new window

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No data found for TZ_fflux.
8 TZ_fmet graphs found

Explore the graph:Soil Heat Flux in a new window

Explore the graph:Tonzi Soil Temperature Set A in a new window

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No data found for TZ_tram.
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1 TZ_windprof graphs found

Explore the graph:Wind Speed Profile in a new window

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2 TZ_sm graphs found

Explore the graph:Floor Solar Radiations in a new window

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1 TZ_met graphs found

Explore the graph:Floor and Tower RH in a new window

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No data found for TZ_osu.
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