Passive microwave signatures of autumnal sea ice types from ship-based observation

Byong Jun Hwang, Jens K. Ehn, Ryan Galley, David G. Barber

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Surface-scale passive microwave signatures of newly formed sea ice were collected using ship-based radiometers in the Southern Beaufort Sea and Amundsen Gulf between mid October and mid November 2003. Sea ice in the region was highly spatially and temporally variable. Over a heterogeneous area of open water and thin ice, polarization ratios showed multimodal frequency distributions and the differences between surface and satellite radiometric data were large. However, differences were small over a homogeneous area of snow-covered first-year ice during late fall and the corresponding histograms showed unimodal distributions. Our results suggest that sub-pixel heterogeneity is a critical factor in characterizing the mixture rules used in passive microwave sea ice algorithms.

Original languageEnglish
Title of host publication2007 IEEE International Geoscience and Remote Sensing Symposium
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages4245-4248
Number of pages4
ISBN (Electronic)9781424412129
ISBN (Print)9781424412112
DOIs
Publication statusPublished - 7 Jan 2008
Externally publishedYes
Event2007 IEEE International Geoscience and Remote Sensing Symposium - Barcelona, Spain
Duration: 23 Jun 200728 Jun 2007
http://www.grss-ieee.org/event/igarss-2007/

Conference

Conference2007 IEEE International Geoscience and Remote Sensing Symposium
Abbreviated titleIGARSS 2007
CountrySpain
CityBarcelona
Period23/06/0728/06/07
Internet address

Fingerprint

Sea ice
sea ice
Ships
Microwaves
Ice
ice
Radiometers
histogram
Snow
open water
radiometer
pixel
polarization
snow
Pixels
Satellites
Polarization
ship
microwave
Water

Cite this

Hwang, B. J., Ehn, J. K., Galley, R., & Barber, D. G. (2008). Passive microwave signatures of autumnal sea ice types from ship-based observation. In 2007 IEEE International Geoscience and Remote Sensing Symposium (pp. 4245-4248). [4423788] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/IGARSS.2007.4423788
Hwang, Byong Jun ; Ehn, Jens K. ; Galley, Ryan ; Barber, David G. / Passive microwave signatures of autumnal sea ice types from ship-based observation. 2007 IEEE International Geoscience and Remote Sensing Symposium. Institute of Electrical and Electronics Engineers Inc., 2008. pp. 4245-4248
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Hwang, BJ, Ehn, JK, Galley, R & Barber, DG 2008, Passive microwave signatures of autumnal sea ice types from ship-based observation. in 2007 IEEE International Geoscience and Remote Sensing Symposium., 4423788, Institute of Electrical and Electronics Engineers Inc., pp. 4245-4248, 2007 IEEE International Geoscience and Remote Sensing Symposium, Barcelona, Spain, 23/06/07. https://doi.org/10.1109/IGARSS.2007.4423788

Passive microwave signatures of autumnal sea ice types from ship-based observation. / Hwang, Byong Jun; Ehn, Jens K.; Galley, Ryan; Barber, David G.

2007 IEEE International Geoscience and Remote Sensing Symposium. Institute of Electrical and Electronics Engineers Inc., 2008. p. 4245-4248 4423788.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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T1 - Passive microwave signatures of autumnal sea ice types from ship-based observation

AU - Hwang, Byong Jun

AU - Ehn, Jens K.

AU - Galley, Ryan

AU - Barber, David G.

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N2 - Surface-scale passive microwave signatures of newly formed sea ice were collected using ship-based radiometers in the Southern Beaufort Sea and Amundsen Gulf between mid October and mid November 2003. Sea ice in the region was highly spatially and temporally variable. Over a heterogeneous area of open water and thin ice, polarization ratios showed multimodal frequency distributions and the differences between surface and satellite radiometric data were large. However, differences were small over a homogeneous area of snow-covered first-year ice during late fall and the corresponding histograms showed unimodal distributions. Our results suggest that sub-pixel heterogeneity is a critical factor in characterizing the mixture rules used in passive microwave sea ice algorithms.

AB - Surface-scale passive microwave signatures of newly formed sea ice were collected using ship-based radiometers in the Southern Beaufort Sea and Amundsen Gulf between mid October and mid November 2003. Sea ice in the region was highly spatially and temporally variable. Over a heterogeneous area of open water and thin ice, polarization ratios showed multimodal frequency distributions and the differences between surface and satellite radiometric data were large. However, differences were small over a homogeneous area of snow-covered first-year ice during late fall and the corresponding histograms showed unimodal distributions. Our results suggest that sub-pixel heterogeneity is a critical factor in characterizing the mixture rules used in passive microwave sea ice algorithms.

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Hwang BJ, Ehn JK, Galley R, Barber DG. Passive microwave signatures of autumnal sea ice types from ship-based observation. In 2007 IEEE International Geoscience and Remote Sensing Symposium. Institute of Electrical and Electronics Engineers Inc. 2008. p. 4245-4248. 4423788 https://doi.org/10.1109/IGARSS.2007.4423788