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Field Notes

<--2012-03-19 10:40:00 | 2012-04-05 09:30:00-->
Other sites visited today: Tonzi | Tonzi

Vaira: 2012-03-21 09:00:00 (DOY 81)
Author: Joe Verfaillie
Others: Siyan, Stephen

Summary: Replaced new soil co2 batteries, installed soil co2 probes, reinstalled SHF plate 3, reset cr23x to fix am16/32, oak tree leaves starting

Vaira
2012-03-21

I arrived about 9:00 with Siyan. Shortly afterwards Stephen from Ameriflux arrived. It was sunny with some high thin clouds the burned off and w very light breeze. The ground is a little drier than two days ago. Today we noticed that many of the threes are beginning to put on leaves.

I installed new batteries (borrowed from DWR) for the new soil co2 system sn BB-VR_soilco2. Siyan and I installed three sets of three probes to the west, north and east of the data logging box. All the probes and temperatures were reporting reasonable numbers when we left.

The screen for the tower computer would not turn on but the computer seemed to be running. We waited until it got a little sunnier then the computer screen worked fine. The AM16/32 was bad again. Cycling the power on the CR23X fixed it again.

The solar power seemed slow to recharge the batteries. When we left about noontime the solar charger was reading 12.2V 15.4A solar, 3.2A load.

I reinstalled soil heat flux plate number three.

Field Data

No tank data

Well Depth

DateLocationDepth (feet)
2012-03-21TZ_floor28.9
2012-03-21TZ_road37.3
2012-03-21TZ_tower34

No TZ Moisture Point data found

No VR Moisture Point data found

No TZ grass heigth found

No VR grass heigth found

Tree DBH

DateTag#Reading (mm)

No water potential data found

No VR Grass Biomass data found

No VR OakLeaves Biomass data found

No VR PineNeedles Biomass data found

9 photos found

view of field site
20120321VR_AmerifluxTower.jpg ( 2012-03-21 11:34:22 ) Full size: 4000x3000
view of field site

view of field site
20120321VR_Leafout.jpg ( 2012-03-21 11:55:28 ) Full size: 4000x3000
view of field site

view of field site
20120321VR_NewSoilCO2.jpg ( 2012-03-21 11:09:39 ) Full size: 4000x3000
view of field site

view of field site
20120321VR_Site.jpg ( 2012-03-21 11:33:50 ) Full size: 4000x3000
view of field site

view of field site
20120321VR_SoilCO2Box.jpg ( 2012-03-21 11:10:34 ) Full size: 4000x3000
view of field site

view of field site
20120321VR_SoilCO2East.jpg ( 2012-03-21 11:10:18 ) Full size: 4000x3000
view of field site

view of field site
20120321VR_SoilCO2North.jpg ( 2012-03-21 11:10:05 ) Full size: 4000x3000
view of field site

view of field site
20120321VR_SoilCO2West.jpg ( 2012-03-21 11:09:53 ) Full size: 4000x3000
view of field site

Ameriflux site check
vaira_2012_03_20_093102.jpg ( 2012-03-20 09:29:58 ) Full size: 1296x960
Ameriflux site check

Graphs display:
9 sets found

16 VR_met graphs found

Temperatures

System Power Voltage

Soil Temperatures Set 1

Soil Temperatures Set 2

Soil Temperature Set 3

Soil Temperature at -4cm

Soil Heat Flux

Soil Moisture

Photosynthetic Active Radiation

Short/Long Wave Radiation

LED sensor

Vaira PPT

Peltier SHF Plates

Peltier SHF Temperatures

LED NDVI

NDVI SRS Raw Data

2 VR_flux graphs found

CO2 Density

Sonic Wind

No data found for VR_soilco2.
No data found for VR_pond.
Can't check TZVR_mixed
No data found for VR_fd.
No data found for VR_processed.
No data found for VR_arable.
No data found for VR_soilvue.

 
 

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This material is based upon work supported by the National Science Foundation and US Department of Energy. Any opinions, findings, conclusions, or recommendations expressed in the material are those of the author(s) and do not necessarily reflect the views of the supporters.