Field Notes

<--2003-01-21 09:00:00 | 2003-01-29 11:00:00-->
Other sites visited today: Tonzi/Vaira

Tonzi: 2003-01-29 10:00:00 (DOY 29)
Author: Ted Hehn
Others: Liukang, Jianwu

Summary: Tower solar controller melted terminal - fix but swapped for soil co2 system. New ventilated HMP45 shield, change solar panel angle, leveled net radiometers.

When: Wed., 29Jan03, JD-29
Where: Tonzi/Vaira Ranches
Who: Ted Hehn/Liukang Xu/Jianwu Tang
Weather

Trip Purpose: General site maintenance

Tonzi Ranch: 29jan03

Tonzi-tower power failure
-terminal in solar regulator overheated, melted solder and broke free from motherboard. Remove regulator from soil IRGA system and install on tower. Repair regulator that failed by soldering terminal back in place. Install repaired regulator in soil IRGA system. The regulator that failed has a large hole burned in the case around the positive battery lead input. This regulator is fine for small load current applications (soil IRGAs) and should not be used on the flux systems where there is 30 amp capability.

Install newly designed radiation shield on tower - this design incorporates a small fan attached directly to a Campbell radiation shield-this design allows the sunlight to directly impinge upon the black fan body which may cause heating -- future designs should have the fan painted white and a hole in one of the shield plates such that the fan is also shielded from incoming radiation

Change PVM angle from 45 to 60 degrees to align perpendicular to winter solar angle of 30 degrees.

Level net radiometers at tower floor met system

Misc Notes
The regulators at all sites need to be fused on all inputs and outputs. 30 amp on solar inputs, 30 amp on battery I/O and 5 amp on the load outputs.

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

No TZ OakLeaves Biomass data found

No TZ PineNeedles Biomass data found

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

Explore the graph:LED Sensor Incoming in a new window

Explore the graph:LED Sensor Outgoing in a new window

Explore the graph:4-Band Solar Radiation in a new window

Explore the graph:Air Temperature Profile in a new window

Explore the graph:Relativity Humidity Profile in a new window

Explore the graph:Tonzi Tower PRI in a new window

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

Explore the graph:SRS NDVI in a new window

No data found for TZ_soilco2.
Can't check TZ_mixed
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

Explore the graph:Air Pressure in a new window

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

Explore the graph:Tonzi Soil Temperatures Set B in a new window

Explore the graph:Tonzi Soil Temperatures Set C in a new window

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

Explore the graph:Well Level in a new window

Explore the graph:Well Water Temperature in a new window

Explore the graph:Soil Water Potential in a new window

No data found for TZ_tram.
No data found for TZ_co2prof.
No data found for TZ_irt.
No data found for TZ_windprof.
No data found for TZ_tflux.
2 TZ_sm graphs found

Explore the graph:Floor Solar Radiations in a new window

Explore the graph:TZ Soil Moisture in a new window

Can't check TZ_met
1 TZ_met graphs found

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

Can't check TZVR_mixed
No data found for TZ_osu.
No data found for TZ_fd.
Tonzi Z-cam data

plot of Tonzi z-cam LAI

plot of Tonzi z-cam gap fration