气候变化领域集成服务门户(CCPortal): CHELSA-TraCE21k-high-resolution (1 km) downscaled transient temperature and precipitation data since the Last Glacial Maximum

CCPortal

DOI	10.5194/cp-19-439-2023
	CHELSA-TraCE21k-high-resolution (1 km) downscaled transient temperature and precipitation data since the Last Glacial Maximum
	Karger, Dirk Nikolaus; Nobis, Michael P.; Normand, Signe; Graham, Catherine H.; Zimmermann, Niklaus E.
发表日期	2023
ISSN	1814-9324
EISSN	1814-9332
起始页码	439
结束页码	456
卷号	19 期号:2
英文摘要	High-resolution, downscaled climate model data are used in a wide variety of applications across environmental sciences. Here we introduce a new, high-resolution dataset, CHELSA-TraCE21k. It is obtained by downscaling TraCE-21k data, using the Climatologies at high resolution for the earth's land surface areas (CHELSA) V1.2 algorithm with the objective to create global monthly climatologies for temperature and precipitation at 30 arcsec spatial resolution in 100-year time steps for the last 21 000 years. Paleo-orography at high spatial resolution and for each time step is created by combining high-resolution information on glacial cover from current and Last Glacial Maximum (LGM) glacier databases and interpolations using data from a global model of glacial isostasy (ICE-6G_C) and a coupling to mean annual temperatures from TraCE21k (Transient Climate Evolution of the last 21 000 years) based on the Community Climate System Model version 3 (CCSM3). Based on the reconstructed paleo-orography, mean annual temperature and precipitation were downscaled using the CHELSA V1.2 algorithm. The data were validated by comparisons with the glacial extent of the Laurentide ice sheet based on expert delineations, proxy data from Greenland ice cores, historical climate data from meteorological stations, and a dynamic simulation of species distributions throughout the Holocene. Validations show that the CHELSA-TraCE21k V1.0 dataset reasonably represents the distribution of temperature and precipitation through time at an unprecedented 1 km spatial resolution, and simulations based on the data are capable of detecting known LGM refugia of species.
语种	英语
WOS研究方向	Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences
WOS类目	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000936298900001
来源期刊	CLIMATE OF THE PAST
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/281230
作者单位	Swiss Federal Institutes of Technology Domain; Swiss Federal Institute for Forest, Snow & Landscape Research; Aarhus University
推荐引用方式 GB/T 7714	Karger, Dirk Nikolaus,Nobis, Michael P.,Normand, Signe,et al. CHELSA-TraCE21k-high-resolution (1 km) downscaled transient temperature and precipitation data since the Last Glacial Maximum[J],2023,19(2).
APA	Karger, Dirk Nikolaus,Nobis, Michael P.,Normand, Signe,Graham, Catherine H.,&Zimmermann, Niklaus E..(2023).CHELSA-TraCE21k-high-resolution (1 km) downscaled transient temperature and precipitation data since the Last Glacial Maximum.CLIMATE OF THE PAST,19(2).
MLA	Karger, Dirk Nikolaus,et al."CHELSA-TraCE21k-high-resolution (1 km) downscaled transient temperature and precipitation data since the Last Glacial Maximum".CLIMATE OF THE PAST 19.2(2023).