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Remote Sens. 2014, 6(12), 12667-12685; doi:10.3390/rs61212667

Land Surface Temperature Retrieval Using Airborne Hyperspectral Scanner Daytime Mid-Infrared Data

1
University of Chinese Academy of Sciences, Beijing 100049, China
2
Key Laboratory of Quantitative Remote Sensing Information Technology, Academy of Opto-Electronics, Chinese Academy of Sciences, Beijing 100094, China
3
College of Geography and Planning, Ludong University, Yantai 264025, China
4
College of Geomatics and Geoinformation, Guilin University of Technology, Guilin 541004, China
*
Authors to whom correspondence should be addressed.
Received: 30 July 2014 / Revised: 15 October 2014 / Accepted: 1 December 2014 / Published: 16 December 2014
(This article belongs to the Special Issue Recent Advances in Thermal Infrared Remote Sensing)
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Abstract

Land surface temperature (LST) retrieval is a key issue in infrared quantitative remote sensing. In this paper, a split window algorithm is proposed to estimate LST with daytime data in two mid-infrared channels (channel 66 (3.746~4.084 μm) and channel 68 (4.418~4.785 μm)) from Airborne Hyperspectral Scanner (AHS). The estimation is conducted after eliminating reflected direct solar radiance with the aid of water vapor content (WVC), the view zenith angle (VZA), and the solar zenith angle (SZA). The results demonstrate that the LST can be well estimated with a root mean square error (RMSE) less than 1.0 K. Furthermore, an error analysis for the proposed method is also performed in terms of the uncertainty of LSE and WVC, as well as the Noise Equivalent Difference Temperature (NEΔT). The results show that the LST errors caused by a LSE uncertainty of 0.01, a NEΔT of 0.33 K, and a WVC uncertainty of 10% are 0.4~2.8 K, 0.6 K, and 0.2 K, respectively. Finally, the proposed method is applied to the AHS data of 4 July 2008. The results show that the differences between the estimated and the ground measured LST for water, bare soil and vegetation areas are approximately 0.7 K, 0.9 K and 2.3K, respectively. View Full-Text
Keywords: mid-infrared data; land surface temperature; split-window; AHS data mid-infrared data; land surface temperature; split-window; AHS data
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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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MDPI and ACS Style

Zhao, E.; Qian, Y.; Gao, C.; Huo, H.; Jiang, X.; Kong, X. Land Surface Temperature Retrieval Using Airborne Hyperspectral Scanner Daytime Mid-Infrared Data. Remote Sens. 2014, 6, 12667-12685.

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