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Explore objectives, requirements, and set-up of NAFE stations to monitor soil temperature, wetness, and vegetation. Derive relationships and address gaps in data.
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NAFE monitoring stations O. Merlin, J. Walker, R. Panciera, R. Young and M. Rinaldi 3rd NAFE Workshop 17-18 Sept. 2007
Objectives • Provide 0-5cm soil temperature Teff • Derive TIR-Teff relationships • Estimate of vegetation wetness • Presence of dew
Requirements • Distributed in space • Include major land covers: dry land pasture, irrigated pasture, dry wheat, irrigated wheat, bare soil
NAFE stations S3 S2 S1 S5 S6 S4
NAFE station set up North 1 Mikron FOV 6:1 1 Ahlborn FOV 4:1 2 Everest FOV 1:1 Campbell sensor 0/1 Unidata temp sensors
TIR calibration • 1 before 1 after campaign • Add hot water 60ºC in bucket • And ice down to 10ºC • Link black body temp to output I/V
S1 S2 S3 S4
S1 Dry wheat Breakdown of the TIR
S2 Bare soil No veg wetness sensor
S3 Irrigated wheat Battery
S4 Irrigated pasture (alfalfa) Battery
S5 Dry land pasture Logger Logger No radiometer
S6 Dry land pasture No logger No radiometer
Conclusions • Gaps in the data • Combination of S1, S5, S6: continuous monitoring for dry land