Field Notes
<--2003-07-11 04:30:00 | 2003-07-25 10:00:00-->Phenocam link: Searching...
Tonzi/Vaira: 2003-07-17 10:00:00 (DOY 198)
Author: LiuKang Xu
Others: Jianwu, Qi Chen
Summary: Standard fieldwork, installed two more soil co2 sensors at -24cm, leaf samples for CASI image - 9 plots
When: July 17, 2003 D198 Trip Purpose: check 3 flux systems and download data, soil moisture probe reading, Soil CO2 flux measurement, install two additional soil CO2 probe, sample leaf sample at 9 locations in Mr. Tonzi’s ranch for CASI image. Tower system: was running good, but again we are still missing lot of data. We captured only 60% of data in last 10 days, while Floor and Vaira had much higher data capturing percentage for the same period. Percentage of data capturing for three flux systems during the period of d188.65-198.65.
Download data, after reboot pc, gillsonic outputs:
Problem: the pump for the CO2 profile was broken. Floor system: System running good, we got more than enough solar power, PV reading 13.5, 7.5 and 2.5. All data loggers working good. Replaced battery for Nancy’s sapflow (the one near the floor tower).
Vaira site: Arrived 6:35, fence and flux system running great. But the watchdog program quit working, fortunately we didn’t miss any single data points. PV reading 12.7, 1.5 and 3.0.
Soil moisture probe reading
Jianwu’s Note CO2 efflux measurements are averaged 2 micro mol s-1 m-2 under the tree, and 0.5 micro mol s-1m-2 in the open area. The stem respiration is about 1.5-2 micro mol s-1m-2. I installed two more CO2 sensors in soil, one in the open at 24cm, and one under the tree at 24cm. The concentrations in the open are about 350ppm (2cm), 800ppm(8cm), 1400 ppm(16cm), and 1700ppm (24cm); under trees are 1700ppm (2cm), 4300ppm(8cm), 7800 ppm(16cm), and 11200ppm (24cm), much more than those in the open. Qi Chen’s Note We arrived the field site at around 10:00am, and Liukang and I then began to collect the leaf samples. July 24, ppt in am in Oakland and Davis. Check the ranch |
0 photos found
16 sets found
No data found for TZ_Fenergy.
11 TZ_tmet graphs found
No data found for TZ_soilco2.
Can't check TZ_mixed
3 TZ_mixed graphs found
No data found for TZ_fflux.
8 TZ_fmet graphs found
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
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.