气候变化领域集成服务门户(CCPortal): On the Spin-Up Strategy for Spatial Modeling of Permafrost Dynamics: A Case Study on the Qinghai-Tibet Plateau

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DOI	10.1029/2021MS002750
	On the Spin-Up Strategy for Spatial Modeling of Permafrost Dynamics: A Case Study on the Qinghai-Tibet Plateau
	Ji, Hailong; Nan, Zhuotong; Hu, Jianan; Zhao, Yi; Zhang, Yaonan
通讯作者	Nan, ZT (通讯作者)，Nanjing Normal Univ, Key Lab, Minist Educ Virtual Geog Environm, Nanjing, Peoples R China. ; Nan, ZT (通讯作者)，Jiangsu Ctr Collaborat Innovat Geog Informat Reso, Nanjing, Peoples R China.
发表日期	2022
EISSN	1942-2466
卷号	14 期号:3
英文摘要	Spin-up is essential to provide initial conditions for land surface models (LSM) when they cannot be given reliably as in the application to regional permafrost change studies. In this study, the impacts of spin-up strategy including total spin-up length and cycling scheme on modeling of permafrost dynamics on the Qinghai-Tibet Plateau (QTP) were evaluated through two groups of experiments using a modified Noah LSM. The first group aims to test different total spin-up lengths and the second group for different cycling schemes. The results show that the presence of permafrost prolongs the convergence of the model. Vertically, the slowest convergence is observed at the permafrost table. The insufficiency of total spin-up length is prone to underestimate permafrost area and overestimate the degradation rate. Different cycling schemes considerably affect the resulting initial thermal fields and result in degradation rates with a difference of 3.37 x 10(3) km(2)/a on the QTP, which exceeds the difference (2.92 x 10(3) km(2)/a) in the degradation rates reported in existing studies. The multi-year cycling scheme is generally preferred, but overlong cycle length should be avoided to prevent the introduction of climate change trends in the spin-up period. We recommend a spin-up strategy of a 500-year cycling with the first 5- to 10-year of forcing for modeling permafrost on the QTP with the Noah LSM. Our findings highlight the importance of the spin-up strategy, which is usually neglected in present LSM-based permafrost modeling studies.
关键词	LAND-SURFACE MODEL ACTIVE-LAYER CLIMATE-CHANGE HIGH-LATITUDE FORCING DATA SOIL THAW PARAMETERIZATION SIMULATION REGIONS
英文关键词	spin-up; permafrost; Qinghai-Tibet Plateau; land surface modeling; numerical modeling
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000776466100014
来源期刊	JOURNAL OF ADVANCES IN MODELING EARTH SYSTEMS
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254442
作者单位	[Ji, Hailong; Nan, Zhuotong; Hu, Jianan; Zhao, Yi] Nanjing Normal Univ, Key Lab, Minist Educ Virtual Geog Environm, Nanjing, Peoples R China; [Nan, Zhuotong] Jiangsu Ctr Collaborat Innovat Geog Informat Reso, Nanjing, Peoples R China; [Zhang, Yaonan] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou, Peoples R China; [Zhang, Yaonan] Natl Cryosphere Desert Data Ctr, Lanzhou, Peoples R China
推荐引用方式 GB/T 7714	Ji, Hailong,Nan, Zhuotong,Hu, Jianan,et al. On the Spin-Up Strategy for Spatial Modeling of Permafrost Dynamics: A Case Study on the Qinghai-Tibet Plateau[J]. 中国科学院西北生态环境资源研究院,2022,14(3).
APA	Ji, Hailong,Nan, Zhuotong,Hu, Jianan,Zhao, Yi,&Zhang, Yaonan.(2022).On the Spin-Up Strategy for Spatial Modeling of Permafrost Dynamics: A Case Study on the Qinghai-Tibet Plateau.JOURNAL OF ADVANCES IN MODELING EARTH SYSTEMS,14(3).
MLA	Ji, Hailong,et al."On the Spin-Up Strategy for Spatial Modeling of Permafrost Dynamics: A Case Study on the Qinghai-Tibet Plateau".JOURNAL OF ADVANCES IN MODELING EARTH SYSTEMS 14.3(2022).