Research on the Influence of Horizontal Thermal Advection on Surface Energy Balance in Zoige Alpine Wetland
The near-surface energy budget closure has always been a scientific hot topic in the land-surface processes research， especially over the underlying surface of heterogeneous wetlands.In this investigation， the horizontal thermal advection caused by thermal inhomogeneity of the underlying surface ove...
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Science Press, PR China
2022-02-01
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| Series: | Gaoyuan qixiang |
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| Online Access: | http://www.gyqx.ac.cn/EN/10.7522/j.issn.1000-0534.2020.00059 |
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| author | Xuancheng LU Jun WEN Yue YANG Hui TIAN Wenhui LIU Yueyue WU Yuqin JIANG |
| author_facet | Xuancheng LU Jun WEN Yue YANG Hui TIAN Wenhui LIU Yueyue WU Yuqin JIANG |
| author_sort | Xuancheng LU |
| collection | DOAJ |
| description | The near-surface energy budget closure has always been a scientific hot topic in the land-surface processes research， especially over the underlying surface of heterogeneous wetlands.In this investigation， the horizontal thermal advection caused by thermal inhomogeneity of the underlying surface over the wetland is calculated based on the data of the Flower-lake observation field in the Zoige alpine wetland.With considering the horizontal thermal advection， its contribution to the near-surface energy closure is analyzed.The results show that the mean horizontal thermal advection of the Zoige wetland is 22.9 W·m-2， and the maximum value can reach 58.7 W·m-2 in the daytime of summer 2017.After introducing the horizontal thermal advection and soil heat storage into the near-surface energy balance equation， the near-surface energy closure ratio increased from 41.8% to 67.9% in summer.The contribution of horizontal thermal advection was 5.8%， that of soil thermal storage was 20.1%， and that of plant photosynthetic thermal storage was 1.0%.The diurnal variation of the near-surface horizontal thermal advective is equivalent to the sensible heat flux in Zoige wetland， and the maximum diurnal variation is about one third of the thermal storage of the wetland soil. |
| format | Article |
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| issn | 1000-0534 |
| language | zho |
| publishDate | 2022-02-01 |
| publisher | Science Press, PR China |
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| series | Gaoyuan qixiang |
| spelling | doaj-art-ad6db004ab3c4a899e79bbe0a82ea9cb2025-08-20T02:16:49ZzhoScience Press, PR ChinaGaoyuan qixiang1000-05342022-02-0141112213110.7522/j.issn.1000-0534.2020.000591000-0534（2022）01-0122-10Research on the Influence of Horizontal Thermal Advection on Surface Energy Balance in Zoige Alpine WetlandXuancheng LU0Jun WEN1Yue YANG2Hui TIAN3Wenhui LIU4Yueyue WU5Yuqin JIANG6College of Atmospheric Sciences， Chengdu University of Information Technology / Sichuan Key Laboratory of Plateau Atmosphere and Environment， Chengdu 610225， Sichuan， ChinaCollege of Atmospheric Sciences， Chengdu University of Information Technology / Sichuan Key Laboratory of Plateau Atmosphere and Environment， Chengdu 610225， Sichuan， ChinaCollege of Atmospheric Sciences， Chengdu University of Information Technology / Sichuan Key Laboratory of Plateau Atmosphere and Environment， Chengdu 610225， Sichuan， ChinaNorthwest Institute of Ecological Environment and Resources， Chinese Academy of Sciences / Key Laboratory of Land Surface Process and Climate Change in the Cold and Arid Region of the Chinese Academy of Sciences， Lanzhou 730000， Gansu， ChinaCollege of Atmospheric Sciences， Chengdu University of Information Technology / Sichuan Key Laboratory of Plateau Atmosphere and Environment， Chengdu 610225， Sichuan， ChinaCollege of Atmospheric Sciences， Chengdu University of Information Technology / Sichuan Key Laboratory of Plateau Atmosphere and Environment， Chengdu 610225， Sichuan， ChinaCollege of Atmospheric Sciences， Chengdu University of Information Technology / Sichuan Key Laboratory of Plateau Atmosphere and Environment， Chengdu 610225， Sichuan， ChinaThe near-surface energy budget closure has always been a scientific hot topic in the land-surface processes research， especially over the underlying surface of heterogeneous wetlands.In this investigation， the horizontal thermal advection caused by thermal inhomogeneity of the underlying surface over the wetland is calculated based on the data of the Flower-lake observation field in the Zoige alpine wetland.With considering the horizontal thermal advection， its contribution to the near-surface energy closure is analyzed.The results show that the mean horizontal thermal advection of the Zoige wetland is 22.9 W·m-2， and the maximum value can reach 58.7 W·m-2 in the daytime of summer 2017.After introducing the horizontal thermal advection and soil heat storage into the near-surface energy balance equation， the near-surface energy closure ratio increased from 41.8% to 67.9% in summer.The contribution of horizontal thermal advection was 5.8%， that of soil thermal storage was 20.1%， and that of plant photosynthetic thermal storage was 1.0%.The diurnal variation of the near-surface horizontal thermal advective is equivalent to the sensible heat flux in Zoige wetland， and the maximum diurnal variation is about one third of the thermal storage of the wetland soil.http://www.gyqx.ac.cn/EN/10.7522/j.issn.1000-0534.2020.00059alpine wetlandeddy correlationhorizontal thermal advectionenergy imbalancenon-uniform underlying surface |
| spellingShingle | Xuancheng LU Jun WEN Yue YANG Hui TIAN Wenhui LIU Yueyue WU Yuqin JIANG Research on the Influence of Horizontal Thermal Advection on Surface Energy Balance in Zoige Alpine Wetland Gaoyuan qixiang alpine wetland eddy correlation horizontal thermal advection energy imbalance non-uniform underlying surface |
| title | Research on the Influence of Horizontal Thermal Advection on Surface Energy Balance in Zoige Alpine Wetland |
| title_full | Research on the Influence of Horizontal Thermal Advection on Surface Energy Balance in Zoige Alpine Wetland |
| title_fullStr | Research on the Influence of Horizontal Thermal Advection on Surface Energy Balance in Zoige Alpine Wetland |
| title_full_unstemmed | Research on the Influence of Horizontal Thermal Advection on Surface Energy Balance in Zoige Alpine Wetland |
| title_short | Research on the Influence of Horizontal Thermal Advection on Surface Energy Balance in Zoige Alpine Wetland |
| title_sort | research on the influence of horizontal thermal advection on surface energy balance in zoige alpine wetland |
| topic | alpine wetland eddy correlation horizontal thermal advection energy imbalance non-uniform underlying surface |
| url | http://www.gyqx.ac.cn/EN/10.7522/j.issn.1000-0534.2020.00059 |
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