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Influence of soil water content on the thermal infrared emissivity of bare soils. Implication for land surface temperature determination.

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Influence of soil water content on the thermal infrared emissivity of bare soils. Implication for land surface temperature determination.

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dc.contributor.author	Mira, M.
dc.contributor.author	Valor i Micó, Enric
dc.contributor.author	Boluda Hernández, Rafael
dc.contributor.author	Coll Company, César
dc.contributor.author	Caselles Miralles, Vicente
dc.date.accessioned	2014-07-01T11:10:04Z
dc.date.available	2014-07-01T11:10:04Z
dc.date.issued	2007
dc.identifier.citation	Mira, M.; Valor i Micó, Enric; Boluda Hernández, Rafael; Coll Company, César; Caselles Miralles, Vicente (2007) Influence of soil water content on the thermal infrared emissivity of bare soils. Implication for land surface temperature determination. Journal of Geophysical Research 112
dc.identifier.uri	http://hdl.handle.net/10550/36754
dc.description.abstract	The influence of soil water content in thermal infrared emissivity is a known fact but has been poorly studied in the past. A laboratory study for quantifying the dependence of emissivity on soil moisture was carried out. Six samples of surface horizons of different soil types were selected for the experiment. The gravimetric method was chosen for determining the soil moisture, whereas the emissivity was measured at different soil water contents using the two-lid variant of the box method. As a result, the study showed that emissivity increases from 1.7% to 16% when water content becomes higher, especially in sandy soils in the 8.2<br>9.2 mm range. Accordingly, a set of equations was derived to obtain emissivity from soil moisture at different spectral bands for the analyzed mineral soils. Moreover, results showed that the spectral ratio decreases with increasing soil water content. Finally, the study showed that systematic errors from 0.1 to 2 K can be caused by soil moisture influence on emissivity.
dc.relation.ispartof	Journal of Geophysical Research, 2007, vol. 112
dc.subject	Física
dc.title	Influence of soil water content on the thermal infrared emissivity of bare soils. Implication for land surface temperature determination.
dc.type	journal article	es_ES
dc.date.updated	2014-07-01T11:10:04Z
dc.identifier.doi	10.1029/2007JF000749
dc.identifier.idgrec	043677
dc.rights.accessRights	open access	es_ES
dc.identifier.url	10.1029/2007JF000749