Arctic PBL Cloud Height and Motion Retrievals from MISR and MINX
How Arctic clouds respond and feedback to sea ice loss is key to understanding of the rapid climate change seen in the polar region. As more open water becomes available in the Arctic Ocean, cold air outbreaks (aka. off-ice flow from polar lows) produce a vast sheet of roll clouds in the planetary b...
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ftnasantrs:oai:casi.ntrs.nasa.gov:20120011264 2023-05-15T14:41:56+02:00 Arctic PBL Cloud Height and Motion Retrievals from MISR and MINX Wu, Dong L. Unclassified, Unlimited, Publicly available February 20, 2012 application/pdf http://hdl.handle.net/2060/20120011264 unknown Document ID: 20120011264 http://hdl.handle.net/2060/20120011264 No Copyright CASI Meteorology and Climatology GSFC.ABS.01056.2012 11th International Winds Workshop; 20-24 Feb. 2012; Aukland; New Zealand 2012 ftnasantrs 2019-07-21T00:49:37Z How Arctic clouds respond and feedback to sea ice loss is key to understanding of the rapid climate change seen in the polar region. As more open water becomes available in the Arctic Ocean, cold air outbreaks (aka. off-ice flow from polar lows) produce a vast sheet of roll clouds in the planetary boundary layer (PBl). The cold air temperature and wind velocity are the critical parameters to determine and understand the PBl structure formed under these roll clouds. It has been challenging for nadir visible/IR sensors to detect Arctic clouds due to lack of contrast between clouds and snowy/icy surfaces. In addition) PBl temperature inversion creates a further problem for IR sensors to relate cloud top temperature to cloud top height. Here we explore a new method with the Multiangle Imaging Spectro-Radiometer (MISR) instrument to measure cloud height and motion over the Arctic Ocean. Employing a stereoscopic-technique, MISR is able to measure cloud top height accurately and distinguish between clouds and snowy/icy surfaces with the measured height. We will use the MISR INteractive eXplorer (MINX) to quantify roll cloud dynamics during cold-air outbreak events and characterize PBl structures over water and over sea ice. Other/Unknown Material Arctic Arctic Ocean Climate change Sea ice NASA Technical Reports Server (NTRS) Arctic Arctic Ocean |
institution |
Open Polar |
collection |
NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
language |
unknown |
topic |
Meteorology and Climatology |
spellingShingle |
Meteorology and Climatology Wu, Dong L. Arctic PBL Cloud Height and Motion Retrievals from MISR and MINX |
topic_facet |
Meteorology and Climatology |
description |
How Arctic clouds respond and feedback to sea ice loss is key to understanding of the rapid climate change seen in the polar region. As more open water becomes available in the Arctic Ocean, cold air outbreaks (aka. off-ice flow from polar lows) produce a vast sheet of roll clouds in the planetary boundary layer (PBl). The cold air temperature and wind velocity are the critical parameters to determine and understand the PBl structure formed under these roll clouds. It has been challenging for nadir visible/IR sensors to detect Arctic clouds due to lack of contrast between clouds and snowy/icy surfaces. In addition) PBl temperature inversion creates a further problem for IR sensors to relate cloud top temperature to cloud top height. Here we explore a new method with the Multiangle Imaging Spectro-Radiometer (MISR) instrument to measure cloud height and motion over the Arctic Ocean. Employing a stereoscopic-technique, MISR is able to measure cloud top height accurately and distinguish between clouds and snowy/icy surfaces with the measured height. We will use the MISR INteractive eXplorer (MINX) to quantify roll cloud dynamics during cold-air outbreak events and characterize PBl structures over water and over sea ice. |
format |
Other/Unknown Material |
author |
Wu, Dong L. |
author_facet |
Wu, Dong L. |
author_sort |
Wu, Dong L. |
title |
Arctic PBL Cloud Height and Motion Retrievals from MISR and MINX |
title_short |
Arctic PBL Cloud Height and Motion Retrievals from MISR and MINX |
title_full |
Arctic PBL Cloud Height and Motion Retrievals from MISR and MINX |
title_fullStr |
Arctic PBL Cloud Height and Motion Retrievals from MISR and MINX |
title_full_unstemmed |
Arctic PBL Cloud Height and Motion Retrievals from MISR and MINX |
title_sort |
arctic pbl cloud height and motion retrievals from misr and minx |
publishDate |
2012 |
url |
http://hdl.handle.net/2060/20120011264 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Climate change Sea ice |
genre_facet |
Arctic Arctic Ocean Climate change Sea ice |
op_source |
CASI |
op_relation |
Document ID: 20120011264 http://hdl.handle.net/2060/20120011264 |
op_rights |
No Copyright |
_version_ |
1766313631209750528 |