Field Notes

<--2002-07-05 08:28:00 | 2002-07-11 15:50:00-->
Other sites visited today: Tonzi | Vaira
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Tonzi/Vaira: 2002-07-11 04:00:00 (DOY 192)
Author: LiuKang Xu
Others:

Summary: Predawn water potential, swapped 7500s at Floor and Tower, LI-6400 had trouble only one ACi curve

When: July 11, 2002 D192
Where: Tonzi/Vaira Ranches
Who: Liukang Xu
Weather Mostly Sunny, little windy, temperature 100-105 F

Trip Purpose: Predawn water potential, check 3 flux systems and download data, soil moisture probe reading, dendrometer reading, A/Ci curve for oak leaf at Tonzi Ranch.

Overall: Floor and Vaira flux systems running great last week. Tower system was down since around 4:00 pm Wednesday (7/10), according to Ted. He told me that voltage regulator has a small jump wire got shortaged. Apparently high air temperature of 110 caused this problem. I only finished one A/Ci curve from 8:30 to 10:30 in the morning. The li-cor 6400 quit working during the 2nd A/Ci leaf, also because of high temperature.

Tonzi Ranch: Arrived at 4:30 for predawn water potential:

11-Jul 192 245 -16 -19.5
11-Jul 192 248 -21 -17.5
11-Jul 192 250 -16.5 -20
11-Jul 192 255 -14.5 -13
11-Jul 192 252 -17 -19.5
11-Jul 192 81 -14.5 -14
11-Jul 192 78 -11 -12.5
11-Jul 192 76 -15.5 -14.5
11-Jul 192 72 -8 -10
11-Jul 192 71 -12.5 -11.5

Dendrometer reading:

date 7/5/2002 7/11/2002
jday
time_pst 0:00 6:10am
treetag
tree71 8 7.8
tree72 8.2 8.3
tree77 12.3 12.2
tree78 18.8 18.2
tree79 9.2 9.3
tree245 4.6 4.5
tree248 7.3 7.3
tree250 8.3 8.3
tree252 12.3 12.3
tree255 8.1 8.2

Floor system: Fence working, flux system was running. All data loggers communicate with pc. PV reading 12.5, 1.9, and 2.0 at 8:30. Gillsonic output after reboot the laptop; battery fully charged. C drive has 2.24 GB free space. Replace li-cor 7500 sn 0042 came off and sn 0065 went on at 12:35.

after reboot PC
mean sd
w -0.16 0.195
u 0.79 0.262
v 0.96 0.301
Tsonic 33.039 0.505
q 2.508 0.023
CO2 1.858 0.008

Tower system: The system was down since 4:00 pm Wednesday (d191). No data downloading, due to the reasons I stated above. Ted fixed the problem in the afternoon. I replaced li-cor 7500 sn 0035 came off and sn 0041 went on around 13:00

Soil moisture point probe reading.

Tonzi Vaira
Xu 7931AF 402165 574B4B 402FF3 57632 573FAA 7933FDE
7/11/2002; D192 canopy canopy open drip line open open open
tower understory solar panel sap flow resp trans solar panel flux tower
0 to 15 cm 7.60 4.27 8.70 1.80 6.50 1.40 0.60
15 to 30 cm 12.33 12.70 12.60 11.80 13.10 6.80 10.70
30 to 45 cm 17.23 14.37 18.47 13.27 6.73 11.20 13.27
45 to 60 cm 16.00 8.60 22.73 15.23 10.90 18.10 19.33

Vaira Ranch: arrived at 7:30. Fence Ok, flux system also running great last week. PV reading 12.2, 1.5, and 2.6 at 7:45 am with half fully charged battery. Soil moisture probe reading (see above). 2.48 GB free space on C drive: Sonic outputs looks Ok after download data, see below;

after reboot PC
mean sd
w -0.26 0.175
u -1.37 0.233
v 0.348 0.289
Tsonic 26.62 0.292
q 25.57 0.012
CO2 1.948 0.024

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.