Field Notes

<--2002-01-23 12:00:00 | 2002-02-08 15:34:00-->
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Tonzi/Vaira: 2002-02-08 00:00:00 (DOY 39)
Author: Dennis Baldocchi
Others: Ted

Summary: Soil sample for GSWC and bulk density, Reset clocks - fast by 5min, grass heights

When: Feb 8, 2002
Where: Tonzi/Vaira Ranches
Who: DDB and T Hehn
Weather: Clear, growing grass, rained previous night, gusts on tower up to 10 m/s. See snow on the Sierras.

Took Moisture Point Soil Measurements and Calibrated them with gravimetric and bulk density sampling.

8-Feb-02 ddb rained previous day
7931AF 402165 574B4B 402FF3 57632 573FAA 7933FDE
canopy canopy open drip line open open open
tower understory solar panel sap flow resp trans solar panel flux tower
Tonzi Tonzi Tonzi Tonzi Tonzi Vaira Vaira
41.4 44.1 24.7 46.5 23.1 34.15
37.25 37.5 39.1 36.9 30.7 33.55
40.1 42.95 39.1 45 29.6 30.95
40.5 49.5 45.5 42.3 35.25 35.65

The solar system was drawing 2.2 amps, 13.7 volts and was charging 16 amps at 1300.

12:57 Reset Clocks on Tower. PC was fast by 5 minutes. Used time on cell phone, which is linked to satellite. Forget the GPS, which we used in the past. Reset clocks on the Campbell data loggers.

Dendrometers

band reading
248 4.7
250 7.5
252 -.4
255 6.4
71 5.4
72 4.0
77 7.0
78 5.5

13:30 Reset clock on forest floor PC. It was fast by 5 minutes too. Reset data loggers.

Sampled plant matter for leaf area index. Took 3 samples. The grass was quite short.

Took Plant Height measurements. The mean height was 3.88 cm, the std dev was 1.83 cm, took 17 samples.

No cows visible, but they are grazing on the ranch.

15:00 at Vaira Ranch

Power, 13.7 volts
Drawing 2.7 amps
Generating 10.4 amps

No cows visible. Short grass.

Height was 2.66 cm, std dev 0.882 cm, n=12

Bulk Density data

8-Feb-02 volume: 90.47 cm 3
tdr probe can soil+can+wet soil+can dry moisture can wt g h20 g-1 soil bulk density cm3 cm-3 tdr moisture pt
7931afe 16 189.92 159.41 30.51 52.78 0.2861 1.1786 0-5 cm 0.3372 41.40%
2 223.2 193.7 29.5 52.52 0.2090 1.5605 5-10 cm 0.3261
574b4b 11 210.23 173.43 36.8 54.9 0.3105 1.3102 0-5 cm 0.4068 44.10%
14 221.93 191.44 30.49 52.74 0.2198 1.5331 5-10 cm 0.3370
402ff3 12 195.08 160.14 34.94 54.76 0.3316 1.1648 0-5 cm 0.3862 24.70%
1 208.13 175.25 32.88 52.6 0.2681 1.3557 0-5 cm 0.3634
574632 5 203.6 167.7 35.9 55.13 0.3189 1.2443 0-5 cm 0.3968 46.50%
8 207.34 172.58 34.76 52.04 0.2884 1.3324 0-5 cm 0.3842
7 216.48 180.68 35.8 52.28 0.2788 1.4193 0-5 cm 0.3957
Vaira
7933fde 15 175.12 139.92 35.2 52.23 0.4014 0.9693 0-5 cm 0.3891 34.10%
13 188.95 155.7 33.25 54.82 0.3296 1.1151 0-5 cm 0.3675
573faa 6 190.93 153.31 37.62 52.7 0.3739 1.1121 0-5 cm 0.4158 23.10%

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

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Explore the graph:Tonzi Soil Temperature Set D in a new window

Explore the graph:Well Level 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.
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.