气候变化领域集成服务门户(CCPortal): Differences Between ICESat and CryoSat-2 Sea Ice Thicknesses Over the Arctic: Consequences for Analyzing the Ice Volume Trend

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DOI	10.1029/2020JD033103
	Differences Between ICESat and CryoSat-2 Sea Ice Thicknesses Over the Arctic: Consequences for Analyzing the Ice Volume Trend
	Kim J.-M.; Sohn B.-J.; Lee S.-M.; Tonboe R.T.; Kang E.-J.; Kim H.-C.
发表日期	2020
ISSN	2169897X
卷号	125 期号:22
英文摘要	Two sources of readily available and non-overlapping space-borne data on sea ice thickness over the Arctic (i.e., Ice, Cloud, and land Elevation Satellite [ICESat] and CryoSat-2 [CS2]) were compared using overlapping thermal microwave radiometer data to examine their respective differences. As a bridge connecting these two data sets, data on the vertically polarized emissivity difference between 10.65 and 18.7 GHz derived from the Advanced Microwave Sounding Radiometer were related to ICESat and CS2 thickness values via regression. The results indicate that there are substantial and systematic differences in the ice thickness between these two data sets over the Arctic; ICESat ice thickness was systematically lower than that of CS2 by ~50 cm, compared to ice thickness from Operation IceBridge and upper looking sonar data. The CS2 thickness observed later than that of ICESat was found to be thicker, contradicting the thinning expected under global warming conditions. Correcting for the 50-cm difference between ICESat or CS2 data revealed trends in ice volume that are consistent with the expected and modeled declines in the Pan-Arctic Ice-Ocean Modeling and Assimilation System data, further corroborating the 50 cm of relative bias observed between the two data sets. ©2020. The Authors.
英文关键词	CryoSat-2; ice volume trend; ICESat; sea ice thickness
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185632
作者单位	School of Earth and Environmental Sciences, Seoul National University, Seoul, South Korea; Unit of Arctic Sea-Ice Prediction, Korea Polar Research Institute, Incheon, South Korea; Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration, School of Atmospheric Physics, Nanjing University of Information Science and Technology, Nanjing, China; Department of Electrical, Computer, and Energy Engineering, Center for Environmental Technology, University of Colorado, Boulder, CO, United States; National Snow and Ice Data Center, University of Colorado, Boulder, CO, United States; Danish Meteorological Institute, Copenhagen, Denmark
推荐引用方式 GB/T 7714	Kim J.-M.,Sohn B.-J.,Lee S.-M.,et al. Differences Between ICESat and CryoSat-2 Sea Ice Thicknesses Over the Arctic: Consequences for Analyzing the Ice Volume Trend[J],2020,125(22).
APA	Kim J.-M.,Sohn B.-J.,Lee S.-M.,Tonboe R.T.,Kang E.-J.,&Kim H.-C..(2020).Differences Between ICESat and CryoSat-2 Sea Ice Thicknesses Over the Arctic: Consequences for Analyzing the Ice Volume Trend.Journal of Geophysical Research: Atmospheres,125(22).
MLA	Kim J.-M.,et al."Differences Between ICESat and CryoSat-2 Sea Ice Thicknesses Over the Arctic: Consequences for Analyzing the Ice Volume Trend".Journal of Geophysical Research: Atmospheres 125.22(2020).