Evaluation of Operation IceBridge quick-look snow depth estimates on sea ice

被引：29

作者：

King, Joshua ^{[1
]}

Howell, Stephen ^{[1
]}

Derksen, Chris ^{[1
]}

Rutter, Nick ^{[2
]}

Toose, Peter ^{[1
]}

Beckers, Justin F. ^{[3
]}

Haas, Christian ^{[3
,4
]}

Kurtz, Nathan ^{[5
]}

Richter-Menge, Jacqueline ^{[6
]}

机构：

[1] Environm Canada, Climate Res Div, Toronto, ON, Canada

[2] Northumbria Univ, Dept Geog, Newcastle Upon Tyne NE1 8ST, Tyne & Wear, England

[3] Univ Alberta, Dept Earth & Atmospher Sci, Edmonton, AB, Canada

[4] York Univ, Dept Earth & Space Sci & Engn, Toronto, ON M3J 2R7, Canada

[5] NASA, Goddard Space Flight Ctr, Hydrospher & Biospher Sci Lab, Greenbelt, MD 20771 USA

[6] Engn Res & Dev Ctr, Cold Reg Res & Engn Lab, Hanover, NH USA

来源：

GEOPHYSICAL RESEARCH LETTERS | 2015年 / 42卷 / 21期

关键词：

THICKNESS RETRIEVAL; RADAR; CRYOSAT-2; FREEBOARD; BAND; IMPACT; SHEBA;

D O I：

10.1002/2015GL066389

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

We evaluate Operation IceBridge (OIB) "quick-look" snow depth on sea ice retrievals using in situ measurements taken over immobile first-year ice (FYI) and multiyear ice (MYI) during March of 2014. Good agreement was found over undeformed FYI (-4.5 cm mean bias) with reduced agreement over deformed FYI (-6.6 cm mean bias). Over MYI, the mean bias was -5.7 cm, but 54% of retrievals were discarded by the OIB retrieval process as compared to only 10% over FYI. Footprint scale analysis revealed a root-mean-square error (RMSE) of 6.2 cm over undeformed FYI with RMSE of 10.5 cm and 17.5 cm in the more complex deformed FYI and MYI environments. Correlation analysis was used to demonstrate contrasting retrieval uncertainty associated with spatial aggregation and ice surface roughness.

引用

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页码：9302 / 9310

页数：9

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