Field Notes

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Tonzi/Vaira: 2003-10-02 05:30:00 (DOY 275)
Author: LiuKang Xu
Others:

Summary: Last predawn water potential of season, swapped 7500s, Vaira on day light savings time for about a week.

When: Oct 2, 2003 D275
Where: Tonzi/Vaira Ranches
Who: Liukang Xu
Weather Sunny, little windy, temperature 80oF. Small oak tree has 60-70% leaves turned yellow, while 20-30% for big trees.

Predawn water potential measurement: Arrived at 5:30. Temperature 7oC. This is the last time for this season, please see the fig all the seasonal trends.

Fig_20031002.png

Dendrometer reading: The tree still keep shrinking.

d275
date 10/2/2003
jday
time_pst 7:25
treetag
tree71 11.7
tree72 16.5
tree77 21.3
tree78 22.4
tree79 16.7
tree245 9.2
tree248 13.8
tree250 13.7
tree252 23.9
tree255 14.4
*Tighted band on trees 248 and 250 on 7/20/01. Xu

Soil moisture reading:

Tonzi 7931AFE 402165 574B4B 402FF3 57632 7A432E 7A3C6E 7A3B40 7A4AAA
canopy canopy open drip line open
tower understory solar panel sap flow resp trans
10/2/2003(d275)
0-15cm 5.50 2.97 4.55 1.47 2.37 5.90 4.50 4.93 1.70
15-30cm 12.23 11.77 12.90 10.60 11.97 5.67 11.10 9.80 0.70
30-45cm 16.77 5.00 13.55 12.20 0.77 8.97 13.00 15.33 11.30
45-60cm 10.73 5.20 10.80 8.13 8.13 9.60 6.10 14.33 7.23
Vaira 573FAA 7933FDE operator
open open
solar panel flux tower
10/2/2003(d275)
0-15cm 1.63 2.40 Xu
15-30cm 10.80 6.30
30-45cm 15.27 11.30
45-60cm 20.97 19.30

I also replaced licor 7500 for all three flux systems, waiting for the first rain. At Floor, sn 0065 came off and sn 0042 went on, at Tower sn 0041 came off and sn 0418 went on, and at Vaira sn 0073 came off and sn 0035 went on. All three flux systems gave us right outputs (w, u, v, Ts, q, CO2) after I replaced the licor and download the data.

At tower, the monitor of the pc sometimes goes to blank, don’t know why, but the pc is still taking the data. CO2 profiles pump was not on. Informed Ted.

At Vaira, the time setting for the pc was daylight saving time, (talked to Ted, he replaced it one wk ago) I need rename all the raw data files, and change the time in met and soil data files. I did change the time to Pacific Standard Time and uncheck the “Automatic update time”.

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

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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

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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.
1 TZ_windprof graphs found

Explore the graph:Wind Speed Profile in a new window

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.