Physical and Radiative Characteristics and Long Term Variability of the Okhotsk Sea Ice Cover
Much of what we know about the large scale characteristics of the Okhotsk Sea ice cover comes from ice concentration maps derived from passive microwave data. To understand what these satellite data represents in a highly divergent and rapidly changing environment like the Okhotsk Sea, we analyzed c...
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ftnasantrs:oai:casi.ntrs.nasa.gov:20070038189 2023-05-15T17:52:35+02:00 Physical and Radiative Characteristics and Long Term Variability of the Okhotsk Sea Ice Cover Comiso, Josefino C. Ukita, Jinro Nakayama, Masashige Stanko, Boba Gersten, Robert Nishio, Fumihiko Gasiewski, Al Naoki, Kazuhiro Unclassified, Unlimited, Publicly available [2007] application/pdf http://hdl.handle.net/2060/20070038189 unknown Document ID: 20070038189 http://hdl.handle.net/2060/20070038189 Copyright, Distribution as joint owner in the copyright CASI Earth Resources and Remote Sensing 2007 ftnasantrs 2018-06-09T22:59:47Z Much of what we know about the large scale characteristics of the Okhotsk Sea ice cover comes from ice concentration maps derived from passive microwave data. To understand what these satellite data represents in a highly divergent and rapidly changing environment like the Okhotsk Sea, we analyzed concurrent satellite, aircraft, and ship data and characterized the sea ice cover at different scales from meters to tens of kilometers. Through comparative analysis of surface features using co-registered data from visible, infrared and microwave channels we evaluated how the general radiative and physical characteristics of the ice cover changes as well as quantify the distribution of different ice types in the region. Ice concentration maps from AMSR-E using the standard sets of channels, and also only the 89 GHz channel for optimal resolution, are compared with aircraft and high resolution visible data and while the standard set provides consistent results, the 89 GHz provides the means to observe mesoscale patterns and some unique features of the ice cover. Analysis of MODIS data reveals that thick ice types represents about 37% of the ice cover indicating that young and new ice represent a large fraction of the lice cover that averages about 90% ice concentration, according to passive microwave data. A rapid decline of -9% and -12 % per decade is observed suggesting warming signals but further studies are required because of aforementioned characteristics and because the length of the ice season is decreasing by only 2 to 4 days per decade. Other/Unknown Material okhotsk sea Sea ice NASA Technical Reports Server (NTRS) Okhotsk |
institution |
Open Polar |
collection |
NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
language |
unknown |
topic |
Earth Resources and Remote Sensing |
spellingShingle |
Earth Resources and Remote Sensing Comiso, Josefino C. Ukita, Jinro Nakayama, Masashige Stanko, Boba Gersten, Robert Nishio, Fumihiko Gasiewski, Al Naoki, Kazuhiro Physical and Radiative Characteristics and Long Term Variability of the Okhotsk Sea Ice Cover |
topic_facet |
Earth Resources and Remote Sensing |
description |
Much of what we know about the large scale characteristics of the Okhotsk Sea ice cover comes from ice concentration maps derived from passive microwave data. To understand what these satellite data represents in a highly divergent and rapidly changing environment like the Okhotsk Sea, we analyzed concurrent satellite, aircraft, and ship data and characterized the sea ice cover at different scales from meters to tens of kilometers. Through comparative analysis of surface features using co-registered data from visible, infrared and microwave channels we evaluated how the general radiative and physical characteristics of the ice cover changes as well as quantify the distribution of different ice types in the region. Ice concentration maps from AMSR-E using the standard sets of channels, and also only the 89 GHz channel for optimal resolution, are compared with aircraft and high resolution visible data and while the standard set provides consistent results, the 89 GHz provides the means to observe mesoscale patterns and some unique features of the ice cover. Analysis of MODIS data reveals that thick ice types represents about 37% of the ice cover indicating that young and new ice represent a large fraction of the lice cover that averages about 90% ice concentration, according to passive microwave data. A rapid decline of -9% and -12 % per decade is observed suggesting warming signals but further studies are required because of aforementioned characteristics and because the length of the ice season is decreasing by only 2 to 4 days per decade. |
author |
Comiso, Josefino C. Ukita, Jinro Nakayama, Masashige Stanko, Boba Gersten, Robert Nishio, Fumihiko Gasiewski, Al Naoki, Kazuhiro |
author_facet |
Comiso, Josefino C. Ukita, Jinro Nakayama, Masashige Stanko, Boba Gersten, Robert Nishio, Fumihiko Gasiewski, Al Naoki, Kazuhiro |
author_sort |
Comiso, Josefino C. |
title |
Physical and Radiative Characteristics and Long Term Variability of the Okhotsk Sea Ice Cover |
title_short |
Physical and Radiative Characteristics and Long Term Variability of the Okhotsk Sea Ice Cover |
title_full |
Physical and Radiative Characteristics and Long Term Variability of the Okhotsk Sea Ice Cover |
title_fullStr |
Physical and Radiative Characteristics and Long Term Variability of the Okhotsk Sea Ice Cover |
title_full_unstemmed |
Physical and Radiative Characteristics and Long Term Variability of the Okhotsk Sea Ice Cover |
title_sort |
physical and radiative characteristics and long term variability of the okhotsk sea ice cover |
publishDate |
2007 |
url |
http://hdl.handle.net/2060/20070038189 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
Okhotsk |
geographic_facet |
Okhotsk |
genre |
okhotsk sea Sea ice |
genre_facet |
okhotsk sea Sea ice |
op_source |
CASI |
op_relation |
Document ID: 20070038189 http://hdl.handle.net/2060/20070038189 |
op_rights |
Copyright, Distribution as joint owner in the copyright |
_version_ |
1766160192182943744 |