Field Notes

<--2002-08-01 04:40:00 | 2002-08-23 09:25:00-->

Tonzi/Vaira: 2002-08-15 00:00:00 (DOY 227)
Author: LiuKang Xu
Others:

Summary: Swapped 7500s at all towers, Jianwu's batteries swapped, Nancy's data logger 5 needs new battery, three ACi curves

When: Aug. 15, 2002 D227
Where: Tonzi/Vaira Ranches
Who: Liukang Xu
Weather Sunny, little windy, temperature upper 90s, very low humidity and uncomfortable.

Trip Purpose: check 3 flux systems and download data, soil moisture probe reading, dendrometer reading, A/Ci curve for oak leaf at Tonzi Ranch, replaced all the li-cor 7500, clean all the solar panels.

Overall: All flux systems and other instruments were running great last week.

Tonzi Ranch: arrived at 9:00. Jianwu’s two batteries dead, replaced them with two fully charged ones at 10:10. Nancy’s data-logger #5 dead, need a battery. I finished 3 A/Ci curves for oak leaves.

Dendrometer reading:

d227
date 8/15/2002
jday
time_pst 11:35am
treetag
tree71 7.3
tree72 8.2
tree77 11.7
tree78 18.9
tree79 8.7
tree245 4.2
tree248 6.4
tree250 7.5
tree252 11.8
tree255 7.2
Observer Xu

Comparing with previous dendrometer reading, trees stem are shrinking very fast now.

Soil moisture probe reading:

7931AF 402165 574B4B 402FF3 57632 573FAA 7933FDE
8/15/2002 canopy canopy open drip line open open open
Xu tower understory solar panel sap flow resp trans solar panel flux tower
0 to 15 cm 6.67 4.00 8.73 1.27 5.60 0.50 0.77
15 to 30 cm 11.70 11.60 10.80 10.90 11.10 6.33 9.80
30 to 45 cm 15.80 12.93 17.70 12.37 5.40 10.20 13.70
45 to 60 cm 14.60 7.50 23.07 13.13 10.37 18.20 19.70

Floor system: Fence and flux system running good. Replaced li-cor 7500 sn 0065 came off and sn 0073 went on. PV reading 13.6, 13.7 and 1.7 fully charged batteries at 10:45am. Gillsonic ourputs after reboot laptop;

mean std
w -0.500 0.156
u -0.160 0.626
v -0.120 0.432
Tsonic 31.732 0.493
q 2.642 0.012
CO2 1.601 0.003

Tower system: Fence and flux system running good. PV reading 13.6, 9.1, and 2.7 at 1:15 pm: replaced licor 7500 sn 0041 came off and sn 0035 went on. Gillsonic output after reboot the laptop.

mean std
w -0.390 0.736
u 1.830 0.690
v 1.060 0.650
Tsonic 33.870 0.836
q 2.316 0.029
CO2 1.523 0.034

Vaira Ranch: arrived at 15:10. Fence Ok, flux system also running great last week. PV reading 13.3, 6.1, and 3.1 at 15:30 with fully charged battery. Replaced li-cor 7500 sn 0042 came off and sn 0418 went on ( brand new !!). Cleaned solar panels. Soil moisture probe reading (see above). Sonic outputs looks Ok after finished all the tasks, see below;

mean std
w -0.230 0.420
u 1.010 0.640
v -1.000 1.019
Tsonic 36.600 1.919
q 2.293 0.190
CO2 1.385 0.028

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.