Field Notes

<--2002-07-25 09:00:00 | 2002-08-15 00:00:00-->

Tonzi/Vaira: 2002-08-01 04:40:00 (DOY 213)
Author: LiuKang Xu
Others:

Summary: Predawn water potential, Vaira soil moisture sensors wiring locations, standard fieldwork

When: Aug. 1st, 2002 D213
Where: Tonzi/Vaira Ranches
Who: Liukang Xu
Weather Sunny, little windy, temperature lower 90s, comfortable.

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

I saw a cow at Tonzi ranch when I arrived in the early morning. Mr. Tonzi told me that there are still 6 cows in the ranch. So we still need to be very careful to make sure that all the fences are working at all the time.

Overall: All flux systems were running great last week.

Tonzi ranch: Arrived around 4:40am clear sky, temperature 59F

Predawn water potential

DOY Tree # Predawn potential (bar)
Date 1st leaf 2nd leaf operator
1-Aug 213 245 -31 -33 Xu
1-Aug 213 248 -34 -33
1-Aug 213 250 -35.5 -34.5
1-Aug 213 252 -38.5 -37
1-Aug 213 255 -37.5 -39
1-Aug 213 81 -24.5 -20.5
1-Aug 213 71 -22.5 -21.5
1-Aug 213 72 -15.5 -14
1-Aug 213 76 -27.5 -24.5
1-Aug 213 78 -17 -16

Dendrometer reading:

date 8/1/2002
jday 213
time_pst 6:30am
treetag
tree71 7.7
tree72 8.25
tree77 11.9
tree78 19.2
tree79 9.1
tree245 4.35
tree248 6.7
tree250 7.8
tree252 12.05
tree255 7.7
Xu

Floor system: Fence working, flux system was running. All data loggers communicate with pc. PV reading 12.4, 0.0, and 2.0 and battery fully charged at 6:50am. Gillsonic output after reboot the laptop;

mean std
w 0.11 0.1
u 0.33 0.144
v 0.1 0.184
Tsonic 21.943 0.117
q 2.367 0.027
CO2 1.908 0.015

Tower system: Fence and flux system running good. Gillsonic output after reboot the laptop.

mean std
w -0.04 0.127
u 0.98 0.398
v -1.385 0.239
Tsonic 22.754 0.143
q 3.061 0.057
CO2 1.69 0.014

Soil moisture point probe reading.

Tonzi Vaira
7931AF 402165 574B4B 402FF3 57632 573FAA 7933FDE
8/1/2002 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 6.50 4.20 8.83 1.50 5.70 0.70 2.77
15 to 30 cm 12.70 12.33 11.60 11.50 48.33 6.33 10.70
30 to 45 cm 16.77 12.73 17.97 12.90 6.37 11.20 13.90
45 to 60 cm 14.87 7.90 23.13 13.53 10.63 18.23 19.10

Vaira Ranch: arrived at 7:50. Fence Ok, flux system also running great last week. PV reading 12.2, 1.2, and 2.6 at 7:55 am with fully charged battery. Soil moisture probe reading (see above). Sonic outputs looks Ok after finished all the tasks, see below;

mean std
w -0.16 0.211
u -0.69 0.288
v -1.23 0.473
Tsonic 18.4 0.152
q 2.928 0.01
CO2 1.729 0.165

At Vaira, I also checked the series number for the 5 soil moisture sensors and their CR10X channel locations. And there are;

Series number CR10X chennel location
ML2X sn 54/015 11 H1L1
ML2X sn 54/011 11 H2L2
ML2X sn 54/017 12 H1L1
ML2X sn 54/019 12H2L2
ML2X sn 54/007 13 H1L1

Also from field trip notes 2000, I found the following sensors were installed at Vaira 015, 016, 017, 019, 020.

Looks like two of sensors were replaced, I tried to figure it out when this replacement took place from all the field trips notes, but I could not find any information. Anybody has any information, please let me know !!! Thanks.

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.