气候变化领域集成服务门户(CCPortal): Intercomparison of snow depth retrievals over Arctic sea ice from radar data acquired by Operation IceBridge

CCPortal

DOI	10.5194/tc-11-2571-2017
	Intercomparison of snow depth retrievals over Arctic sea ice from radar data acquired by Operation IceBridge
	Kwok R.; Kurtz N.T.; Brucker L.; Ivanoff A.; Newman T.; Farrell S.L.; King J.; Howell S.; Webster M.A.; Paden J.; Leuschen C.; MacGregor J.A.; Richter-Menge J.; Harbeck J.; Tschudi M.
发表日期	2017
ISSN	19940416
卷号	11 期号:6
英文摘要	Since 2009, the ultra-wideband snow radar on Operation IceBridge (OIB; a NASA airborne mission to survey the polar ice covers) has acquired data in annual campaigns conducted during the Arctic and Antarctic springs. Progressive improvements in radar hardware and data processing methodologies have led to improved data quality for subsequent retrieval of snow depth. Existing retrieval algorithms differ in the way the air-snow (a-s) and snow-ice (s-i) interfaces are detected and localized in the radar returns and in how the system limitations are addressed (e.g., noise, resolution). In 2014, the Snow Thickness On Sea Ice Working Group (STOSIWG) was formed and tasked with investigating how radar data quality affects snow depth retrievals and how retrievals from the various algorithms differ. The goal is to understand the limitations of the estimates and to produce a well-documented, long-term record that can be used for understanding broader changes in the Arctic climate system. Here, we assess five retrieval algorithms by comparisons with field measurements from two ground-based campaigns, including the BRomine, Ozone, and Mercury EXperiment (BROMEX) at Barrow, Alaska; a field program by Environment and Climate Change Canada at Eureka, Nunavut; and available climatology and snowfall from ERA-Interim reanalysis. The aim is to examine available algorithms and to use the assessment results to inform the development of future approaches. We present results from these assessments and highlight key considerations for the production of a long-term, calibrated geophysical record of springtime snow thickness over Arctic sea ice. © 2017 Author(s).
学科领域	air-snow interaction; algorithm; climate change; data acquisition; data processing; data quality; ground-based measurement; hardware; ice thickness; radar; sea ice; snow cover; Alaska; Arctic; Arctic and Antarctic; Arctic Ocean; Canada; Ellesmere Island; Eureka; Nunavut; Nunavut; Queen Elizabeth Islands; United States
语种	英语
scopus关键词	air-snow interaction; algorithm; climate change; data acquisition; data processing; data quality; ground-based measurement; hardware; ice thickness; radar; sea ice; snow cover; Alaska; Arctic; Arctic and Antarctic; Arctic Ocean; Canada; Ellesmere Island; Eureka; Nunavut; Nunavut; Queen Elizabeth Islands; United States
来源期刊	Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/119310
作者单位	Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States; Cryospheric Sciences Laboratory, NASA, Goddard Space Flight Center, Greenbelt, MD, United States; Universities Space Research Association, Goddard Earth Sciences Technology and Research Studies and Investigations, Columbia, MD, United States; ADNET Systems Inc., Lanham, MD, United States; Department of Atmospheric Physics, University of Toronto, Toronto, ON, Canada; Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD, United States; Laboratory for Satellite Altimetry, Satellite Oceanography and Climatology Division, NOAA, Center for Weather and Climate Prediction, College Park, MD, United States; Climate Research Division, Environment and Climate Change Canada, Toronto, ON, Canada; Center for Remote Sensing of Ice Sheets, University of Kansas, Lawrence, KS, United States; Institute of Northern Engineering, University of Alaska Fairbanks, Fairbanks, AK, United States; Colorado Cen...
推荐引用方式 GB/T 7714	Kwok R.,Kurtz N.T.,Brucker L.,et al. Intercomparison of snow depth retrievals over Arctic sea ice from radar data acquired by Operation IceBridge[J],2017,11(6).
APA	Kwok R..,Kurtz N.T..,Brucker L..,Ivanoff A..,Newman T..,...&Tschudi M..(2017).Intercomparison of snow depth retrievals over Arctic sea ice from radar data acquired by Operation IceBridge.Cryosphere,11(6).
MLA	Kwok R.,et al."Intercomparison of snow depth retrievals over Arctic sea ice from radar data acquired by Operation IceBridge".Cryosphere 11.6(2017).