Estimation of hourly land surface heat fluxes over the Tibetan Plateau by the combined use of geostationary and polar-orbiting satellites

Estimation of hourly land surface heat fluxes over the Tibetan Plateau by the combined use of geostationary and polar-orbiting satellites

<p>Estimation of land surface heat fluxes is important for energy and water cycle studies, especially on the Tibetan Plateau (TP), where the topography is unique and the land–atmosphere interactions are strong. The land surface heating conditions also directly influence the movement of atmosph...

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Main Authors: L. Zhong, Y. Ma, Z. Hu, Y. Fu, Y. Hu, X. Wang, M. Cheng, N. Ge
Format: Article
Language:English
Published: Copernicus Publications 2019-04-01
Series:Atmospheric Chemistry and Physics
Online Access:https://www.atmos-chem-phys.net/19/5529/2019/acp-19-5529-2019.pdf
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spelling doaj-71195df5c5fb4b2fabe5e050b2d735802020-11-25T01:22:19ZengCopernicus PublicationsAtmospheric Chemistry and Physics1680-73161680-73242019-04-01195529554110.5194/acp-19-5529-2019Estimation of hourly land surface heat fluxes over the Tibetan Plateau by the combined use of geostationary and polar-orbiting satellitesL. Zhong0L. Zhong1L. Zhong2Y. Ma3Y. Ma4Y. Ma5Z. Hu6Z. Hu7Y. Fu8Y. Hu9X. Wang10M. Cheng11N. Ge12School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, ChinaCAS Center for Excellence in Comparative Planetology, Hefei 230026, ChinaJiangsu Collaborative Innovation Center for Climate Change, Nanjing 210023, ChinaKey Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research, the Chinese Academy of Sciences, Beijing 100101, ChinaCAS Center for Excellence in Tibetan Plateau Earth Sciences, Beijing 100101, ChinaCollege of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100049, ChinaCAS Center for Excellence in Tibetan Plateau Earth Sciences, Beijing 100101, ChinaNorthwest Institute of Eco-Environment and Resources, the Chinese Academy of Sciences, Lanzhou 730000, ChinaSchool of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, ChinaSchool of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, ChinaSchool of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, ChinaSchool of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, ChinaSchool of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China<p>Estimation of land surface heat fluxes is important for energy and water cycle studies, especially on the Tibetan Plateau (TP), where the topography is unique and the land–atmosphere interactions are strong. The land surface heating conditions also directly influence the movement of atmospheric circulation. However, high-temporal-resolution information on the plateau-scale land surface heat fluxes has been lacking for a long time, which significantly limits the understanding of diurnal variations in land–atmosphere interactions. Based on geostationary and polar-orbiting satellite data, the surface energy balance system (SEBS) was used in this paper to derive hourly land surface heat fluxes at a spatial resolution of 10&thinsp;km. Six stations scattered throughout the TP and equipped for flux tower measurements were used to perform a cross-validation. The results showed good agreement between the derived fluxes and in situ measurements through 3738 validation samples. The root-mean-square errors (RMSEs) for net radiation flux, sensible heat flux, latent heat flux and soil heat flux were 76.63, 60.29, 71.03 and 37.5&thinsp;W&thinsp;m<span class="inline-formula"><sup>−2</sup></span>, respectively; the derived results were also found to be superior to the Global Land Data Assimilation System (GLDAS) flux products (with RMSEs for the surface energy balance components of 114.32, 67.77, 75.6 and 40.05&thinsp;W&thinsp;m<span class="inline-formula"><sup>−2</sup></span>, respectively). The diurnal and seasonal cycles of the land surface energy balance components were clearly identified, and their spatial distribution was found to be consistent with the heterogeneous land surface conditions and the general hydrometeorological conditions of the TP.</p>https://www.atmos-chem-phys.net/19/5529/2019/acp-19-5529-2019.pdf
collection DOAJ
language English
format Article
sources DOAJ
author L. Zhong
L. Zhong
L. Zhong
Y. Ma
Y. Ma
Y. Ma
Z. Hu
Z. Hu
Y. Fu
Y. Hu
X. Wang
M. Cheng
N. Ge
spellingShingle L. Zhong
L. Zhong
L. Zhong
Y. Ma
Y. Ma
Y. Ma
Z. Hu
Z. Hu
Y. Fu
Y. Hu
X. Wang
M. Cheng
N. Ge
Estimation of hourly land surface heat fluxes over the Tibetan Plateau by the combined use of geostationary and polar-orbiting satellites
Atmospheric Chemistry and Physics
author_facet L. Zhong
L. Zhong
L. Zhong
Y. Ma
Y. Ma
Y. Ma
Z. Hu
Z. Hu
Y. Fu
Y. Hu
X. Wang
M. Cheng
N. Ge
author_sort L. Zhong
title Estimation of hourly land surface heat fluxes over the Tibetan Plateau by the combined use of geostationary and polar-orbiting satellites
title_short Estimation of hourly land surface heat fluxes over the Tibetan Plateau by the combined use of geostationary and polar-orbiting satellites
title_full Estimation of hourly land surface heat fluxes over the Tibetan Plateau by the combined use of geostationary and polar-orbiting satellites
title_fullStr Estimation of hourly land surface heat fluxes over the Tibetan Plateau by the combined use of geostationary and polar-orbiting satellites
title_full_unstemmed Estimation of hourly land surface heat fluxes over the Tibetan Plateau by the combined use of geostationary and polar-orbiting satellites
title_sort estimation of hourly land surface heat fluxes over the tibetan plateau by the combined use of geostationary and polar-orbiting satellites
publisher Copernicus Publications
series Atmospheric Chemistry and Physics
issn 1680-7316
1680-7324
publishDate 2019-04-01
description <p>Estimation of land surface heat fluxes is important for energy and water cycle studies, especially on the Tibetan Plateau (TP), where the topography is unique and the land–atmosphere interactions are strong. The land surface heating conditions also directly influence the movement of atmospheric circulation. However, high-temporal-resolution information on the plateau-scale land surface heat fluxes has been lacking for a long time, which significantly limits the understanding of diurnal variations in land–atmosphere interactions. Based on geostationary and polar-orbiting satellite data, the surface energy balance system (SEBS) was used in this paper to derive hourly land surface heat fluxes at a spatial resolution of 10&thinsp;km. Six stations scattered throughout the TP and equipped for flux tower measurements were used to perform a cross-validation. The results showed good agreement between the derived fluxes and in situ measurements through 3738 validation samples. The root-mean-square errors (RMSEs) for net radiation flux, sensible heat flux, latent heat flux and soil heat flux were 76.63, 60.29, 71.03 and 37.5&thinsp;W&thinsp;m<span class="inline-formula"><sup>−2</sup></span>, respectively; the derived results were also found to be superior to the Global Land Data Assimilation System (GLDAS) flux products (with RMSEs for the surface energy balance components of 114.32, 67.77, 75.6 and 40.05&thinsp;W&thinsp;m<span class="inline-formula"><sup>−2</sup></span>, respectively). The diurnal and seasonal cycles of the land surface energy balance components were clearly identified, and their spatial distribution was found to be consistent with the heterogeneous land surface conditions and the general hydrometeorological conditions of the TP.</p>
url https://www.atmos-chem-phys.net/19/5529/2019/acp-19-5529-2019.pdf
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