Estimating spatially distributed cotton water use from thermal infrared aerial imagery

A. N. French, G. Fitzgerald, D. Hunsaker, E. Barnes, T. Clarke, S. Lesch, R. Roth, P. Pinter

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

High resolution thermal infrared (TIR) observations of irrigated lands have the potential to retrieve spatially distributed estimates of evapotranspiration (ET) and thereby assess crop stress and refine water scheduling. To assess this possibility we use a remote sensing data set from a 2003 central Arizona cotton experiment in combination with ground-based observations to estimate instantaneous ET. The spatially distributed estimates are compared with those derived from soil neutron probe water observations. We retrieve ET from TIR observations using a two source energy balance (TSEB) approach, which models surface energy fluxes from distinct soil and vegetation sources. This distinction of energy sources is important for heterogeneous and sparsely vegetated surfaces since soil and plant ET processes are significantly different. TSEB requires radiometric surface temperatures, vegetation densities from Normalized Difference Vegetation Index (NDVI) and near surface meteorological observations. Incorporation of TIR observations into other remote sensing surveys could help realize near-real-time water use monitoring at local and regional scales. Copyright ASCE 2005.

Original languageEnglish (US)
Title of host publicationWorld Water Congress 2005
Subtitle of host publicationImpacts of Global Climate Change - Proceedings of the 2005 World Water and Environmental Resources Congress
Number of pages1
DOIs
StatePublished - Dec 1 2005
Event2005 World Water and Environmental Resources Congress - Anchorage, AK, United States
Duration: May 15 2005May 19 2005

Publication series

NameWorld Water Congress 2005: Impacts of Global Climate Change - Proceedings of the 2005 World Water and Environmental Resources Congress

Other

Other2005 World Water and Environmental Resources Congress
CountryUnited States
CityAnchorage, AK
Period5/15/055/19/05

ASJC Scopus subject areas

  • Water Science and Technology

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    French, A. N., Fitzgerald, G., Hunsaker, D., Barnes, E., Clarke, T., Lesch, S., Roth, R., & Pinter, P. (2005). Estimating spatially distributed cotton water use from thermal infrared aerial imagery. In World Water Congress 2005: Impacts of Global Climate Change - Proceedings of the 2005 World Water and Environmental Resources Congress (World Water Congress 2005: Impacts of Global Climate Change - Proceedings of the 2005 World Water and Environmental Resources Congress). https://doi.org/10.1061/40792(173)526