Spring Snow-Albedo Feedback Analysis Over the Third Pole: Results From Satellite Observation and CMIP5 Model Simulations

doi:10.1002/2017JD027846

	Spring Snow-Albedo Feedback Analysis Over the Third Pole: Results From Satellite Observation and CMIP5 Model Simulations
	Guo, H (Guo, Hui)1,2; Wang, XY (Wang, Xiaoyi)1; Wang, T (Wang, Tao)1,3; Ma, YM (Ma, Yaoming)3,4; Ryder, J (Ryder, James)5; Zhang, TT (Zhang, Taotao)1,2; Liu, D (Liu, Dan)1; Ding, JZ (Ding, Jinzhi)1; Li, Y (Li, Yue)6; Piao, SL (Piao, Shilong)1,3,6
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
	2018-01-27
卷号	123 期号:2 页码:750-763
关键词	TIBETAN PLATEAU EVALUATING BIASES SURFACE ALBEDO CLIMATE-CHANGE COVER TEMPERATURE VARIABILITY MONSOON SPREAD
ISSN号	2169-897X
DOI	10.1002/2017JD027846
英文摘要	The snow-albedo feedback is a crucial component in high-altitude cryospheric change but is poorly quantified over the Third Pole, encompassing the Karakoram and Tibetan Plateau. Here we present an analysis of present-day and future spring snow-albedo feedback over the Third Pole, using a 28year satellite-based albedo and the latest climate model simulations. We show that present-day spring snow-albedo feedback strength is primarily determined by the decrease in albedo due to snow metamorphosis, rather than that due to reduced snow cover in the Karakoram, but not found in Southeastern Tibet. We further demonstrate an emergent relationship between snow-albedo feedback from the seasonal cycle and that from climate change across models. Combined with contemporary satellite-based snow-albedo feedback from seasonal cycle, this relationship enables us to estimate that the feedback strength for the Karakoram with a relatively high glaciated area is -2.420.48%K-1 under an unmitigated scenario, which is much stronger than that for Southeastern Tibet (-1.640.48%K-1) and for the Third Pole (-0.890.44%K-1), respectively. Moreover, it is noteworthy that the magnitude of the constrained strength is only half of the unconstrained model estimate for the Third Pole, suggesting that current climate models generally overestimate the feedback of spring snow change to temperature change based on the unmitigated scenario.
WOS研究方向	Meteorology & Atmospheric Sciences
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000425520200008
内容类型	期刊论文
源URL	[http://ir.itpcas.ac.cn/handle/131C11/8756]
专题	青藏高原研究所_图书馆
作者单位	1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Alpine Ecol & Biodivers, Beijing, Peoples R China; 2.Univ Chinese Acad Sci, Beijing, Peoples R China; 3.Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China; 4.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing, Peoples R China; 5.Univ Paris Saclay, CEA CNRS UVSQ, IPSL, LSCE, Gif Sur Yvette, France; 6.Peking Univ, Sino French Inst Earth Syst Sci, Coll Urban & Environm Sci, Beijing, Peoples R China.
推荐引用方式 GB/T 7714	Guo, H ,Wang, XY ,Wang, T ,et al. Spring Snow-Albedo Feedback Analysis Over the Third Pole: Results From Satellite Observation and CMIP5 Model Simulations[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2018,123(2):750-763.
APA	Guo, H .,Wang, XY .,Wang, T .,Ma, YM .,Ryder, J .,...&Piao, SL .(2018).Spring Snow-Albedo Feedback Analysis Over the Third Pole: Results From Satellite Observation and CMIP5 Model Simulations.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,123(2),750-763.
MLA	Guo, H ,et al."Spring Snow-Albedo Feedback Analysis Over the Third Pole: Results From Satellite Observation and CMIP5 Model Simulations".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 123.2(2018):750-763.