气候变化领域集成服务门户(CCPortal): Spring Snow-Albedo Feedback Analysis Over the Third Pole: Results From Satellite Observation and CMIP5 Model Simulations

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DOI	10.1002/2017JD027846
	Spring Snow-Albedo Feedback Analysis Over the Third Pole: Results From Satellite Observation and CMIP5 Model Simulations
	Guo, Hui; Wang, Xiaoyi; Wang, Tao; Ma, Yaoming; Ryder, James; Zhang, Taotao; Liu, Dan; Ding, Jinzhi; Li, Yue; Piao, Shilong
通讯作者	Wang, T (通讯作者)
发表日期	2018
ISSN	2169-897X
EISSN	2169-8996
起始页码	750
结束页码	763
卷号	123 期号:2
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.
关键词	TIBETAN PLATEAU EVALUATING BIASES SURFACE ALBEDO CLIMATE-CHANGE COVER TEMPERATURE VARIABILITY MONSOON SPREAD
英文关键词	CMIP5; future climate change; Karakoram; satellite observations; spring snow-albedo feedback; Third Pole
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000425520200008
来源期刊	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
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/259342
推荐引用方式 GB/T 7714	Guo, Hui,Wang, Xiaoyi,Wang, Tao,et al. Spring Snow-Albedo Feedback Analysis Over the Third Pole: Results From Satellite Observation and CMIP5 Model Simulations[J]. 中国科学院青藏高原研究所,2018,123(2).
APA	Guo, Hui.,Wang, Xiaoyi.,Wang, Tao.,Ma, Yaoming.,Ryder, James.,...&Piao, Shilong.(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).
MLA	Guo, Hui,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).