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Remote Sens. 2015, 7(3), 2850-2870; doi:10.3390/rs70302850

A New Global Climatology of Annual Land Surface Temperature

Institute of Geography, University of Hamburg, Bundesstraße 55, 20146 Hamburg, Germany
Academic Editors: Zhao-Liang Li, Jose A. Sobrino, Xiaoning Song, Josef Kellndorfer and Prasad S. Thenkabail
Received: 31 December 2014 / Revised: 15 February 2015 / Accepted: 27 February 2015 / Published: 10 March 2015
(This article belongs to the Special Issue Recent Advances in Thermal Infrared Remote Sensing)
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Abstract

Land surface temperature (LST) is an important parameter in various fields including hydrology, climatology, and geophysics. Its derivation by thermal infrared remote sensing has long tradition but despite substantial progress there remain limited data availability and challenges like emissivity estimation, atmospheric correction, and cloud contamination. The annual temperature cycle (ATC) is a promising approach to ease some of them. The basic idea to fit a model to the ATC and derive annual cycle parameters (ACP) has been proposed before but so far not been tested on larger scale. In this study, a new global climatology of annual LST based on daily 1 km MODIS/Terra observations was processed and evaluated. The derived global parameters were robust and free of missing data due to clouds. They allow estimating LST patterns under largely cloud-free conditions at different scales for every day of year and further deliver a measure for its accuracy respectively variability. The parameters generally showed low redundancy and mostly reflected real surface conditions. Important influencing factors included climate, land cover, vegetation phenology, anthropogenic effects, and geology which enable numerous potential applications. The datasets will be available at the CliSAP Integrated Climate Data Center pending additional processing. View Full-Text
Keywords: land surface temperature; annual temperature cycle; annual cycle parameters; cloud gaps; thermal infrared; MODIS land surface temperature; annual temperature cycle; annual cycle parameters; cloud gaps; thermal infrared; MODIS
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Bechtel, B. A New Global Climatology of Annual Land Surface Temperature. Remote Sens. 2015, 7, 2850-2870.

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