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

Joshua King; Stephen Howell; Chris Derksen; Nick Rutter; Peter Toose; Justin Beckers; Christian Haas; Nathan Kurtz; Jacqueline Richter-Menge

doi:10.1002/2015GL066389

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

Joshua King, Stephen Howell, Chris Derksen, Nick Rutter, Peter Toose, Justin Beckers, Christian Haas, Nathan Kurtz, Jacqueline Richter-Menge

Geography and Environmental Sciences Department

Research output: Contribution to journal › Article › peer-review

30 Citations (Scopus)

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Abstract

We evaluate Operation IceBridge (OIB) ‘quick-look’ (QL) snow depth on sea ice retrievals using in situ measurements taken over immobile first-year ice (FYI) and multi-year 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.

Original language	English
Pages (from-to)	9302-9310
Journal	Geophysical Research Letters
Volume	42
Issue number	21
Early online date	14 Oct 2015
DOIs	https://doi.org/10.1002/2015GL066389
Publication status	Published - 16 Nov 2015

Keywords

Snow on sea ice
Snow
Sea Ice
Operation IceBridge
Radar
Arctic

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King et al-2015-Geophysical Research LettersFinal published version, 1.04 MBLicence: CC BY-NC-ND

Cite this

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title = "Evaluation of Operation IceBridge quick-look snow depth estimates on sea ice",

abstract = "We evaluate Operation IceBridge (OIB) {\textquoteleft}quick-look{\textquoteright} (QL) snow depth on sea ice retrievals using in situ measurements taken over immobile first-year ice (FYI) and multi-year 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.",

keywords = "Snow on sea ice, Snow, Sea Ice, Operation IceBridge, Radar, Arctic",

author = "Joshua King and Stephen Howell and Chris Derksen and Nick Rutter and Peter Toose and Justin Beckers and Christian Haas and Nathan Kurtz and Jacqueline Richter-Menge",

year = "2015",

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doi = "10.1002/2015GL066389",

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AU - King, Joshua

AU - Howell, Stephen

AU - Derksen, Chris

AU - Rutter, Nick

AU - Toose, Peter

AU - Beckers, Justin

AU - Haas, Christian

AU - Kurtz, Nathan

AU - Richter-Menge, Jacqueline

PY - 2015/11/16

Y1 - 2015/11/16

N2 - We evaluate Operation IceBridge (OIB) ‘quick-look’ (QL) snow depth on sea ice retrievals using in situ measurements taken over immobile first-year ice (FYI) and multi-year 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.

AB - We evaluate Operation IceBridge (OIB) ‘quick-look’ (QL) snow depth on sea ice retrievals using in situ measurements taken over immobile first-year ice (FYI) and multi-year 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.

KW - Snow on sea ice

KW - Snow

KW - Sea Ice

KW - Operation IceBridge

KW - Radar

KW - Arctic

U2 - 10.1002/2015GL066389

DO - 10.1002/2015GL066389

M3 - Article

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VL - 42

SP - 9302

EP - 9310

JO - Geophysical Research Letters

JF - Geophysical Research Letters

IS - 21

ER -

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

Abstract

Keywords

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