干旱区生态环境知识资源中心(Arid): Evaluation of soil temperature in CMIP6 multimodel simulations

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DOI	10.1016/j.agrformet.2024.110039
	Evaluation of soil temperature in CMIP6 multimodel simulations
	Zhou, Junzhi; Zhang, b Jiang; Huang, Yuanyuan
通讯作者	Huang, YY
来源期刊	AGRICULTURAL AND FOREST METEOROLOGY
ISSN	0168-1923
EISSN	1873-2240
出版年	2024
卷号	352
英文摘要	Soil temperature plays a crucial role in understanding land-atmosphere interactions. The Sixth Phase of Coupled Model Intercomparison Project (CMIP6) provides valuable information on soil temperature, however, the performance of these models in capturing soil temperature variations remains unclear. To comprehensively assess the performance of CMIP6 in simulating soil temperature, we employed a set of in-situ observation data, observation-derived gridded data (TS-GCB) and reanalysis data (ERA5L) to build various evaluating metrics for the surface (0-5 cm) and subsurface (5-15 cm) soils. At the global scale, the multimodel ensemble mean (MME) of CMIP6 generally captured the spatial, annual and seasonal variations of soil temperature, but overestimated measured soil temperature by 1.86 degrees C (vs. TS-GCB, surface) and 2.16 degrees C (vs. TS-GCB, subsurface), indicating more heat accumulated in soils than the reality. Surface soil temperature was better represented by MME compared to the subsurface soil layer (vs. TS-GCB). In addition, we found the largest simulation bias in the tropical zone, and both positive and negative bias in the arid regions. The large model spread of the individual models in representing soil temperatures in cold regions or periods highlights the needs of improved understanding of how snow and freeze-thaw affect soil thermal dynamics. Overall, the performance of MME is superior to that of the majority of individual models (vs. TS-GCB). Locally, the large discrepancy among observationderived data, reanalysis data and CMIP6 simulations suggested that it is imperative to acquire more groundtruth soil temperature to better inform model simulation and forecasting.
英文关键词	CMIP6 Soil temperature Bias Climate zones
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001241382900001
WOS关键词	SURFACE-TEMPERATURE ; THERMAL DYNAMICS ; SNOW COVER ; FEEDBACK ; MODELS ; DEPTH ; HEAT ; CSM
WOS类目	Agronomy ; Forestry ; Meteorology & Atmospheric Sciences
WOS研究方向	Agriculture ; Forestry ; Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/402635
推荐引用方式 GB/T 7714	Zhou, Junzhi,Zhang, b Jiang,Huang, Yuanyuan. Evaluation of soil temperature in CMIP6 multimodel simulations[J],2024,352.
APA	Zhou, Junzhi,Zhang, b Jiang,&Huang, Yuanyuan.(2024).Evaluation of soil temperature in CMIP6 multimodel simulations.AGRICULTURAL AND FOREST METEOROLOGY,352.
MLA	Zhou, Junzhi,et al."Evaluation of soil temperature in CMIP6 multimodel simulations".AGRICULTURAL AND FOREST METEOROLOGY 352(2024).