Field Notes

<--2003-10-18 00:00:00 | 2003-11-08 00:00:00-->
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Tonzi/Vaira: 2003-11-07 09:00:00 (DOY 311)
Author: LiuKang Xu
Others:

Summary: First heavy rain of the season, Vaira solar controller burned - replaced, Oak DBH expand quickly after rain.

When: Nov 7 & 10, 2003 d311 &314
Where: Tonzi/Vaira Ranches
Who: Liukang Xu
Weather On Nov 7, heavy cloudy, light rain on previous night. Heavy rain on Sat and Sunday. Mr. Tonzi told we got about 1 inch rain. That’s what we want for the rain pulse paper. On Nov 10, it was clear. I can see some of grass just germinated. Oak trees still have some green leaves. Brown leaves were blown to the ground.

Mr. Tonzi told me that cow would be in his ranch in any days, we want to make sure everything in the field is cow-proof.

Tonzi site:

Tower EC, floor EC and CO2 profiles running pretty good. Outputs from gillsonic gave right values. At floor I connected 7th and 8th solar panel to the power system, so we have more power for the rain season. On Nov 10, PV reading at tower 13.7, 0, and 4.0. At floor, 13.3, 18.1, and 2.4 at 11:50.

Vaira site. On Nov 7, the PV regulator burned. It probably occurred about two days ago (around noon time on Nov 5) based on the system voltage data. Informed Ted, and he replaced it with new regulator on Nov 8. On Nov 10, I went to site again, everything running great. PV reading 12.8, 20.7 and 2.6. The system is still running on 6 solar panels. But fence wire on the west site was broken, I fixed.

After the rain event during the weekend, we got lot of moisture in the soil and oak bole expanded a lot. See below for the reading.

Soil moisture reading:

sol moisture probe reading
Xu Tonzi Ranch
11/7/2003 931AFE 402165 74B4B 402FF3 574632 7A432E 7A3C6E 7A3B40 7A4AAA
0-15cm 13.53 11.10 17.97 10.70 17.45 16.20 14.80 12.80 6.85
15-30cm 10.00 11.25 8.70 11.10 10.95 4.60 11.55 8.40 0.85
30-45cm 15.63 4.40 11.10 11.83 0.85 7.45 11.10 13.50 10.30
45-60cm 10.10 5.35 8.50 7.60 8.10 9.20 6.30 12.70 8.20
Vaira Ranch
933FDE 573FAA
0-15cm 10.80 14.80
15-30cm 13.10 9.60
30-45cm 14.40 10.67
45-60cm 18.15 17.47
Xu Tonzi Ranch
11/10/2003 931AFE 402165 74B4B 402FF3 574632 7A432E 7A3C6E 7A3B40 7A4AAA
0-15cm 19.20 18.85 30.63 13.00 22.70 18.20 16.65 15.07 9.85
15-30cm 12.90 27.15 28.80 23.30 29.70 15.95 19.00 15.70 8.10
30-45cm 16.37 3.95 11.27 10.30 8.30 13.55 12.20 14.90 15.70
45-60cm 10.33 6.30 9.43 8.33 9.35 8.95 6.15 15.53 7.70
Vaira Ranch
933FDE 573FAA
0-15cm 13.43 13.63
15-30cm 21.80 19.08
30-45cm 14.67 15.45
45-60cm 19.17 18.15

Dendrometer reading

tree 11/7/2003 11/10/2003
245 9.9 10.9
248 14.6 16.7
250 15.7 17.2
252 24 23.8
255 14.5 15.8
71 13.7 15.2
72 17.2 17.9
79 18.1 19.5
78 22.4 22.4
77 23.0 23.3

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

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No data found for TZ_soilco2.
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3 TZ_mixed graphs found

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No data found for TZ_fflux.
8 TZ_fmet graphs found

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No data found for TZ_tram.
No data found for TZ_co2prof.
No data found for TZ_irt.
1 TZ_windprof graphs found

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No data found for TZ_tflux.
2 TZ_sm graphs found

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1 TZ_met graphs found

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No data found for TZ_osu.
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