气候变化领域集成服务门户(CCPortal): Simulated Impact of the Tibetan Glacier Expansion on the Eurasian Climate and Glacial Surface Mass Balance during the Last Glacial Maximum

CCPortal

DOI	10.1175/JCLI-D-19-0763.1
	Simulated Impact of the Tibetan Glacier Expansion on the Eurasian Climate and Glacial Surface Mass Balance during the Last Glacial Maximum
	Liu, Yonggang; Wu, Yubin; Lin, Zhongda; Zhang, Yang; Zhu, Jiang; Yi, Chaolu
通讯作者	Yi, CL (通讯作者)
发表日期	2020
ISSN	0894-8755
EISSN	1520-0442
起始页码	6491
结束页码	6509
卷号	33 期号:15
英文摘要	Glaciers over the Tibetan Plateau and surrounding regions during the Last Glacial Maximum (LGM) were much more extensive than during the preindustrial period (PI). The climate impact of such glacial expansion is studied here using the Community Atmosphere Model, version 4 (CAM4). To cover the range of uncertainty in glacier area during the LGM, the following three values are tested: 0.35 x 10(6), 0.53 x 10(6), and 0.70 x 10(6) km(2). The added glacier is distributed approximately equally over the Pamir region and the Himalayas. If 0.70 x 10(6) km(2) is used, the annual mean surface temperature of the glaciated regions would be cooled by similar to 3.5 degrees C. The annual mean precipitation would be reduced by 0.2 mm day(-1) (10%) and 2.5 mm day(-1) (24%) over the Pamir region and Himalayas, respectively. The surface mass balance (SMB) of the glaciers changes by 0.55 m yr(-1) (280%) and 20.32 m yr(-1) (220%) over the two regions, respectively. The changes in SMB remain large (0.29 and 20.13 m yr(-1)), even if the area of the Tibetan glacier were 0.35x10(6) km(2). Therefore, based on the results of this particular model, the expansion of glaciers can either enhance or slow the glacial growth. Moreover, the expansion of glaciers over the Himalayas reduces summer precipitation in central and northern China by similar to 0.5 mm day(-1) and increases summer precipitation in southern Asia by similar to 0.6 mm day(-1). The expansion of glaciers over the Pamir region has a negligible influence on the precipitation in these monsoonal regions, which is likely due to its large distance from the main monsoonal regions.
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000615097400011
来源期刊	JOURNAL OF CLIMATE
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/260001
推荐引用方式 GB/T 7714	Liu, Yonggang,Wu, Yubin,Lin, Zhongda,et al. Simulated Impact of the Tibetan Glacier Expansion on the Eurasian Climate and Glacial Surface Mass Balance during the Last Glacial Maximum[J]. 中国科学院青藏高原研究所,2020,33(15).
APA	Liu, Yonggang,Wu, Yubin,Lin, Zhongda,Zhang, Yang,Zhu, Jiang,&Yi, Chaolu.(2020).Simulated Impact of the Tibetan Glacier Expansion on the Eurasian Climate and Glacial Surface Mass Balance during the Last Glacial Maximum.JOURNAL OF CLIMATE,33(15).
MLA	Liu, Yonggang,et al."Simulated Impact of the Tibetan Glacier Expansion on the Eurasian Climate and Glacial Surface Mass Balance during the Last Glacial Maximum".JOURNAL OF CLIMATE 33.15(2020).