1 Long-term analysis of effective heterogeneity of latent heat flux over diverse land use area

Monday, 12 May 2014
Bellmont BC (Crowne Plaza Portland Downtown Convention Center Hotel)
Wonsik Kim, National Institute for Agro-Environmental Sciences, Tsukuba, Ibaraki, Japan; and D. Komori

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The evapotranspiration ET over a diverse land use area in northern Thailand was successfully estimated by a long-term 11-year eddy covariance measurement, while some measurement gaps due to instrumentation problems and administrative difficulties were unavoidable. The annual mean ET trend with a maximum of 150±10 mm in June and a minimum of 60±10 mm in January was estimated. The total annual mean ET was estimated to be 1300±140 mm. While the interannual variation of ET reflects the response of land surface to both meteorological events and land use/cover changes LUCC, over diverse land use area in northern Thailand, the effect of the rainfall variation to ET was greater than LUCC. Throughout an evaluating of the effective heterogeneity η with Bowen ratio, we suggest that such η information will be useful to understand the effect of land surface heterogeneity on latent and sensible heat fluxes.

Supplementary URL: http://matthew.niaes.affrc.go.jp/~wonsik/

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