Field Notes

<--2011-03-30 10:45:00 | 2011-04-15 12:00:00-->
Other sites visited today: Tonzi | Vaira | Mayberry
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Tonzi: 2011-04-15 00:00:00 (DOY 105)
Author: Siyan Ma
Others: Joe

Summary: Tonzi: 100% oak leaf out

Tonzi: 100% oak leaf out, yellow and white flowers
Vaira: grass green, purple flowers

Vaira:
• Joe checked computer and downloaded data.
• I cleaned the surface of the radiation sensors and checked rain gauge.
• Soil moisture measured, but the two newly installed profile probes still gave lower values of the top layer. Should we reinstall them?
• Took grass spectrum reflectance.

Tower:
• I checked computer and downloaded data.
• Readings of Tower Li-7500’s CO2 and H2O channel were almost zero. Joe found out there was no setting of the range, and he fixed the problem. The mistake should be avoidable.
• Calibrated the CO2 profile system in the field.

Floor:
• I checked computer and downloaded data.
• Joe made efforts to clarify Tonzi met file names on 3/30/2011. When I try to process them, I realize such changes may cause other confuse and waste time. For example, the old name for Tonzi soil met data is "tz2_*.10X", and now it is changed as "CR10X2_soilt_*.10X". I think we should keep the original "tz2", such as "tz2_soil_*.10X". I have talked to Joe about this idea, and he agreed with it.

Other data collection:
soil moisture
tonzi, 7931AFE, 402165, 574B4B, 402FF3, 574632, 7A432E, 7A3C6E, 7A3B40, 7A4AAA
4/15/2011, 105,
0-15, 37.3, 23.6, 37.0, 21.9, 39.9, 17.1, 19.1, 19.4, 16.2
15-30, 36.8, 33.9, 33.4, 27.3, 29.2, 23.7, 27.1, 27.4, 18.5
30-45, 42.7, 41.9, 39.8, 37.1, 45.2, 26.5, 26.2, 31.0, 31.5
45-60, 39.7, 61.6, 65.0, 47.7, 42.3, 32.5, 38.0, 47.1, 27.6

,A6D882B, A3D04E8, A6D72F5, 0-15, 21.2, 15.0, 29.5,
15-30, 22.8, 10.6, 40.1,
30-45, 33.2, 29.6, 36.2
45-60, 44.0, 47.1, 41.4

vaira, 57318a, 7933dee, 00000128B97F3, 00000128B8072, 00000128BDDE8, , ,
0-15, broken, 15.2, 19.85, 6.5, 4.15,
15-30, broken, 23.9, 24, 10.1, 6.85,
30-45, broken, 31.3, 9.25, 18.55, 22.5,
45-60, broken, 32.7, 24.65, 18.2, 26.55,

dendrometer
245, 16.9
250, 11.1
102, 3.9
79, 21
72, 16
2, 14.7
3, 9.5
6, 18.9
4, 13.8
7, 10.4
8, 5.1
1, 8.4

midday leaf water potential: oak -

groundwater: wells and datalogger – shorten the cable of the datalogger to make sure the sensor is no deeper than 15 ft as Gretchen suggested.
Road: 19.40 ft; floor: 10.09 ft; tower: 13.90 ft.

Field Data

No tank data

Well Depth

Date	Location	Depth (feet)
2011-04-15	TZ_floor	10.09
2011-04-15	TZ_road	19.4
2011-04-15	TZ_tower	13.9

No TZ Moisture Point data found

No VR Moisture Point data found

No TZ grass heigth found

No VR grass heigth found

No TZ Tree DBH found

Water Potential - mode: raw

Time	Species	Tree	readings (bar)
2011-04-15 12:04:00	OAK	UNKNOWN	-10.6	-11	-15
2011-04-15 12:04:00	PINE	UNKNOWN	-16.5	-17	-22

No TZ Grass Biomass data found

No TZ OakLeaves Biomass data found

No TZ PineNeedles Biomass data found

10 photos found

tz_7696.jpg ( 2011-04-15 12:46:17 ) Full size: 1600x1200
Green grass and oak trees with fresh leaves

tz_7695.jpg ( 2011-04-15 12:46:10 ) Full size: 1600x1200
Green grass and oaks with new leaves

20110415TZ_ViewOfFloor.jpg ( 2011-04-15 11:49:25 ) Full size: 2560x1920
New leaves and green grass from the tower top

20110415TZ_ViewToRanchoSeco.jpg ( 2011-04-15 11:50:12 ) Full size: 2560x1920
View of pretty new green leave on the oaks and green grass from tower top