Field Notes
<--2011-07-20 12:30:00 | 2011-08-31 09:30:00-->Other sites visited today: Vaira
Tonzi: 2011-08-09 09:30:00 (DOY 221)
Author: Joe Verfaillie
Others:
Summary: Standard field work. Fixed adjusted zcam programs for sunset refference, Floor computer hung in boot, MD9 connections unstable, tree 4cm co2 probe bad.
| Tonzi
2011-08-09 I arrived about 9:30PST. It was clear, sunny and hot. At the ground level there was a sporadic breeze but relatively constant above the canopy. The Tonzi pond is quite a bit lower and the grass is completely dead. I talked to one of the ranchers on the way in the gate. He mentioned that the low hanging wires that run out to the sap flow stations were a danger to the cowboys riding through. I dropped the one to the west station to the ground and I raised the one running to the east station. Most of the one to the north station looked high enough. Still it would be nice to renovate or remove those stations. I collected data from the Tower computer. One of the sap flow systems is not reporting and another’s data looks corrupt. Otherwise all looks well. I calibrated the CO2 profile system but it wasn’t far off: 9:33PST Cell pressure 942mB Cell temperature 52.6, heater on, filter 0sec Span setting 1000ppm, path length 5.5cm Zero: N2 5.0 ultra-High purity 1800psi, offset -1.5ppm Span: CO2 in air 384.08ppm 1000psi, offset +1.08ppm I checked on the zcams. The new program installed last time to take photos at times related to sunset did not work. I fixed two bugs in the code. The default pulse port command was too fast so I set the pulse to 100ms. And the delay between on and off pulses was too short so I set it to 14sec. The cameras tested okay. I added a similar program to the CR200 that controls zcam3. This also tested okay. I swapped cards and cleaned windows. I collected the moisture point data with the netbook. I cleaned the radiometers and swapped the desiccant in the pyranometer. I put a new funnel on the inlet of the upper CO2 profile inlet. I collected data from the Floor computer. It was hung up in boot when I turned the screen on and I had some trouble getting it to reboot. But it finally rebooted. It looked like data was missing here and there, but not a huge proportion. The tram was running. The soil CO2 system read: Open 830ppm @ 2cm, 640ppm @ 4cm, 810ppm @ 8cm, 680 @ 16cm Tree 1940ppm @ 2cm, Error 10,12 @ 4cm, 2210ppm @ 8cm, 4800ppm @ 16cm The 4cm probe under the tree is having a problem. The wells were: Floor 20.5ft (6.25m), Road 29.85ft (9.10m), Hill 25.6ft (7.80m) As measured from the black thing. The solar systems were Tower: 13.0V, 6.1A load, >0.75V below bulk – Batteries seem a little low but visually look good Floor: 13.8V, 15.4A solar, 2.0A load – solar seems high, batteries may be weak. Tram: 28.0V, 0.5A solar, 0.0A load Soil CO2: 28.5V, 2.7A solar, 0.2A load |
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
Tree DBH
| Date | Tag# | Reading (mm) |
|---|
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
16 sets found
No data found for TZ_Fenergy.
11 TZ_tmet graphs found
11 TZ_soilco2 graphs found
Can't check TZ_mixed
3 TZ_mixed graphs found
1 TZ_fflux graphs found
8 TZ_fmet graphs found
1 TZ_tram graphs found
3 TZ_co2prof graphs found
No data found for TZ_irt.
No data found for TZ_windprof.
1 TZ_tflux graphs found
2 TZ_sm graphs found
Can't check TZ_met
1 TZ_met graphs found
Can't check TZVR_mixed
No data found for TZ_osu.
No data found for TZ_fd.
Tonzi Z-cam data