soil temperature retrieval using multi-sensor data paul o'neill, remy dehaan eh graham centre...

Soil Temperature Retrieval Using Multi-Sensor Data

Paul O'Neill, Remy DehaanEH Graham Centre and Charles Sturt University

Jeff WalkerUniversity of Melbourne

Iain HumeEH Graham Centre and NSW DPI

TB = e T

eff

emissivity, related to 0-5

cm soil moisture

effective temperature,

related to 0-5 cm temperature, moisture and temperature

profiles

S2 - Bare Soil

1 cmskin 2.5 cm

5 cm

S1 Dryland Wheat S2 Bare Soil

S3 Irrigated Wheat S4 Irrigated Lucern

Maggioni et al. 2006 - NAFE 05

Maggioni et al. 2006 - NAFE 05

native grasses

wheat

irrigated lucern

use PLMR observations and ancillary data to model soil/canopy temperatures as function of time-of-day, TIR brightness temperature

and vegetation properties

HydraProbe moisture dataL-band brightness temperature

soil texturesurface roughness

vegetation water contentvegetation indices

surface energy balance models

composite vegetation/soil temperature

forward modelling of visible, infrared and microwave radiative transfer