Land Surface Model CAS‐LSM: Model Description and Evaluation
Abstract Comprehensive land surface models are very important for climate and weather forecasting and for improving our understanding of the relationships between humans and the Earth system. This work presents a land surface model of the Chinese Academy of Sciences (CAS‐LSM) that considers groundwa...
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ftdoajarticles:oai:doaj.org/article:0284d6a75ec049f0ad7d0ed821e66f1c 2023-05-15T17:58:02+02:00 Land Surface Model CAS‐LSM: Model Description and Evaluation Zhenghui Xie Longhuan Wang Yan Wang Bin Liu Ruichao Li Jinbo Xie Yujin Zeng Shuang Liu Junqiang Gao Si Chen Binghao Jia Peihua Qin 2020-12-01T00:00:00Z https://doi.org/10.1029/2020MS002339 https://doaj.org/article/0284d6a75ec049f0ad7d0ed821e66f1c EN eng American Geophysical Union (AGU) https://doi.org/10.1029/2020MS002339 https://doaj.org/toc/1942-2466 1942-2466 doi:10.1029/2020MS002339 https://doaj.org/article/0284d6a75ec049f0ad7d0ed821e66f1c Journal of Advances in Modeling Earth Systems, Vol 12, Iss 12, Pp n/a-n/a (2020) Physical geography GB3-5030 Oceanography GC1-1581 article 2020 ftdoajarticles https://doi.org/10.1029/2020MS002339 2022-12-31T12:56:19Z Abstract Comprehensive land surface models are very important for climate and weather forecasting and for improving our understanding of the relationships between humans and the Earth system. This work presents a land surface model of the Chinese Academy of Sciences (CAS‐LSM) that considers groundwater lateral flow, human water regulation, soil freeze‐thaw front dynamics, riverine dissolved inorganic nitrogen transport, anthropologic heat release, urban water usage, and urban planning based on the Community Land Model. Global simulations with the updated CAS‐LSM were conducted to evaluate its performance, and the results show its advantages in reproducing ecohydrological processes. Groundwater lateral flow can replenish the groundwater depletion cone caused by overexploitation, where the offset rate increases as the aquifer thickness increases. The maximum thaw depth increases by 3.62 mm yr−1 in permafrost areas, and the maximum frost depth decreases by 1.89 mm yr−1 in seasonally frozen areas. Nitrogen fertilizer use and point‐source pollution increase the riverine dissolved inorganic nitrogen flow rate in western Europe and eastern China. To further verify the model's ability to simulate the effects of urban planning implementation, simulations over Beijing were conducted using the Weather Research and Forecasting (WRF) model coupled with CAS‐LSM. The results show that anthropogenic heat release enhances the sensible heat flux and temperature in the city center. In terms of urban water planning, most of the total water supply in Beijing should be used for urban irrigation, and a small part should be used for road sprinkling to obtain a greater cooling effect. Article in Journal/Newspaper permafrost Directory of Open Access Journals: DOAJ Articles Journal of Advances in Modeling Earth Systems 12 12 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
language |
English |
topic |
Physical geography GB3-5030 Oceanography GC1-1581 |
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Physical geography GB3-5030 Oceanography GC1-1581 Zhenghui Xie Longhuan Wang Yan Wang Bin Liu Ruichao Li Jinbo Xie Yujin Zeng Shuang Liu Junqiang Gao Si Chen Binghao Jia Peihua Qin Land Surface Model CAS‐LSM: Model Description and Evaluation |
topic_facet |
Physical geography GB3-5030 Oceanography GC1-1581 |
description |
Abstract Comprehensive land surface models are very important for climate and weather forecasting and for improving our understanding of the relationships between humans and the Earth system. This work presents a land surface model of the Chinese Academy of Sciences (CAS‐LSM) that considers groundwater lateral flow, human water regulation, soil freeze‐thaw front dynamics, riverine dissolved inorganic nitrogen transport, anthropologic heat release, urban water usage, and urban planning based on the Community Land Model. Global simulations with the updated CAS‐LSM were conducted to evaluate its performance, and the results show its advantages in reproducing ecohydrological processes. Groundwater lateral flow can replenish the groundwater depletion cone caused by overexploitation, where the offset rate increases as the aquifer thickness increases. The maximum thaw depth increases by 3.62 mm yr−1 in permafrost areas, and the maximum frost depth decreases by 1.89 mm yr−1 in seasonally frozen areas. Nitrogen fertilizer use and point‐source pollution increase the riverine dissolved inorganic nitrogen flow rate in western Europe and eastern China. To further verify the model's ability to simulate the effects of urban planning implementation, simulations over Beijing were conducted using the Weather Research and Forecasting (WRF) model coupled with CAS‐LSM. The results show that anthropogenic heat release enhances the sensible heat flux and temperature in the city center. In terms of urban water planning, most of the total water supply in Beijing should be used for urban irrigation, and a small part should be used for road sprinkling to obtain a greater cooling effect. |
format |
Article in Journal/Newspaper |
author |
Zhenghui Xie Longhuan Wang Yan Wang Bin Liu Ruichao Li Jinbo Xie Yujin Zeng Shuang Liu Junqiang Gao Si Chen Binghao Jia Peihua Qin |
author_facet |
Zhenghui Xie Longhuan Wang Yan Wang Bin Liu Ruichao Li Jinbo Xie Yujin Zeng Shuang Liu Junqiang Gao Si Chen Binghao Jia Peihua Qin |
author_sort |
Zhenghui Xie |
title |
Land Surface Model CAS‐LSM: Model Description and Evaluation |
title_short |
Land Surface Model CAS‐LSM: Model Description and Evaluation |
title_full |
Land Surface Model CAS‐LSM: Model Description and Evaluation |
title_fullStr |
Land Surface Model CAS‐LSM: Model Description and Evaluation |
title_full_unstemmed |
Land Surface Model CAS‐LSM: Model Description and Evaluation |
title_sort |
land surface model cas‐lsm: model description and evaluation |
publisher |
American Geophysical Union (AGU) |
publishDate |
2020 |
url |
https://doi.org/10.1029/2020MS002339 https://doaj.org/article/0284d6a75ec049f0ad7d0ed821e66f1c |
genre |
permafrost |
genre_facet |
permafrost |
op_source |
Journal of Advances in Modeling Earth Systems, Vol 12, Iss 12, Pp n/a-n/a (2020) |
op_relation |
https://doi.org/10.1029/2020MS002339 https://doaj.org/toc/1942-2466 1942-2466 doi:10.1029/2020MS002339 https://doaj.org/article/0284d6a75ec049f0ad7d0ed821e66f1c |
op_doi |
https://doi.org/10.1029/2020MS002339 |
container_title |
Journal of Advances in Modeling Earth Systems |
container_volume |
12 |
container_issue |
12 |
_version_ |
1766166557499588608 |