Relationship of environmental relative humidity with North Atlantic tropical cyclone intensity and intensification rate
Quantifying the relationship of large-scale environmental conditions such as relative humidity with hurricane intensity and intensity change is important for statistical hurricane intensity forecasts. Our composite analysis of 9 years of Atmospheric infrared Sounder (AIRS) humidity data spanning 198...
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ftunivsthongkong:oai:repository.hkust.edu.hk:1783.1-120468 2023-05-15T17:33:50+02:00 Relationship of environmental relative humidity with North Atlantic tropical cyclone intensity and intensification rate Wu, Longtao Su, Hui Fovell, Robert G. Wang, Bin Shen, Janice T. Kahn, Brian H. Hristova-Veleva, Svetla M. Lambrigtsen, Bjorn H. Fetzer, Eric J. Jiang, Jonathan H. 2012 https://repository.hkust.edu.hk/ir/Record/1783.1-120468 https://doi.org/10.1029/2012GL053546 http://lbdiscover.ust.hk/uresolver?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rfr_id=info:sid/HKUST:SPI&rft.genre=article&rft.issn=0094-8276&rft.volume=39&rft.issue=20&rft.date=2012&rft.spage=&rft.aulast=Wu&rft.aufirst=&rft.atitle=Relationship+of+environmental+relative+humidity+with+North+Atlantic+tropical+cyclone+intensity+and+intensification+rate&rft.title=Geophysical+Research+Letters http://www.scopus.com/record/display.url?eid=2-s2.0-84868335488&origin=inward http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=LinksAMR&SrcApp=PARTNER_APP&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000310345200002 English eng Blackwell Publishing Ltd https://repository.hkust.edu.hk/ir/Record/1783.1-120468 Geophysical Research Letters, v. 39, (20), October 2012, article number L20809 0094-8276 1944-8007 https://doi.org/10.1029/2012GL053546 http://lbdiscover.ust.hk/uresolver?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rfr_id=info:sid/HKUST:SPI&rft.genre=article&rft.issn=0094-8276&rft.volume=39&rft.issue=20&rft.date=2012&rft.spage=&rft.aulast=Wu&rft.aufirst=&rft.atitle=Relationship+of+environmental+relative+humidity+with+North+Atlantic+tropical+cyclone+intensity+and+intensification+rate&rft.title=Geophysical+Research+Letters http://www.scopus.com/record/display.url?eid=2-s2.0-84868335488&origin=inward http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=LinksAMR&SrcApp=PARTNER_APP&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000310345200002 Article 2012 ftunivsthongkong https://doi.org/10.1029/2012GL053546 2022-10-07T00:07:47Z Quantifying the relationship of large-scale environmental conditions such as relative humidity with hurricane intensity and intensity change is important for statistical hurricane intensity forecasts. Our composite analysis of 9 years of Atmospheric infrared Sounder (AIRS) humidity data spanning 198 Atlantic tropical cyclones (TCs) shows that environmental relative humidity (ERH) above the boundary layer generally decreases with time as TCs evolve. Near the surface, ERH stays approximately constant. ERH generally increases with increasing TC intensity and intensification rate. Rapidly intensifying TCs are associated with free tropospheric ERH more than 10% (relative to the averaged ERH for all TCs) larger than that for weakening TCs. Substantial azimuthal asymmetry in ERH is also found, especially for the TCs attaining the highest intensities and largest intensification rates at distances greater than 400 km away from the TC center. In the front-right quadrant relative to TC motion, rapid intensification is associated with a sharp gradient of ERH in the upper troposphere, with a decrease from the near to the far environment between 400 hPa and 300 hPa. The ERH gradient weakens with the decrease of intensification rate. This radial ERH gradient might be a useful predictor for the statistical forecast of TC intensification. © 2012. American Geophysical Union. All Rights Reserved. Article in Journal/Newspaper North Atlantic The Hong Kong University of Science and Technology: HKUST Institutional Repository Geophysical Research Letters 39 20 |
institution |
Open Polar |
collection |
The Hong Kong University of Science and Technology: HKUST Institutional Repository |
op_collection_id |
ftunivsthongkong |
language |
English |
description |
Quantifying the relationship of large-scale environmental conditions such as relative humidity with hurricane intensity and intensity change is important for statistical hurricane intensity forecasts. Our composite analysis of 9 years of Atmospheric infrared Sounder (AIRS) humidity data spanning 198 Atlantic tropical cyclones (TCs) shows that environmental relative humidity (ERH) above the boundary layer generally decreases with time as TCs evolve. Near the surface, ERH stays approximately constant. ERH generally increases with increasing TC intensity and intensification rate. Rapidly intensifying TCs are associated with free tropospheric ERH more than 10% (relative to the averaged ERH for all TCs) larger than that for weakening TCs. Substantial azimuthal asymmetry in ERH is also found, especially for the TCs attaining the highest intensities and largest intensification rates at distances greater than 400 km away from the TC center. In the front-right quadrant relative to TC motion, rapid intensification is associated with a sharp gradient of ERH in the upper troposphere, with a decrease from the near to the far environment between 400 hPa and 300 hPa. The ERH gradient weakens with the decrease of intensification rate. This radial ERH gradient might be a useful predictor for the statistical forecast of TC intensification. © 2012. American Geophysical Union. All Rights Reserved. |
format |
Article in Journal/Newspaper |
author |
Wu, Longtao Su, Hui Fovell, Robert G. Wang, Bin Shen, Janice T. Kahn, Brian H. Hristova-Veleva, Svetla M. Lambrigtsen, Bjorn H. Fetzer, Eric J. Jiang, Jonathan H. |
spellingShingle |
Wu, Longtao Su, Hui Fovell, Robert G. Wang, Bin Shen, Janice T. Kahn, Brian H. Hristova-Veleva, Svetla M. Lambrigtsen, Bjorn H. Fetzer, Eric J. Jiang, Jonathan H. Relationship of environmental relative humidity with North Atlantic tropical cyclone intensity and intensification rate |
author_facet |
Wu, Longtao Su, Hui Fovell, Robert G. Wang, Bin Shen, Janice T. Kahn, Brian H. Hristova-Veleva, Svetla M. Lambrigtsen, Bjorn H. Fetzer, Eric J. Jiang, Jonathan H. |
author_sort |
Wu, Longtao |
title |
Relationship of environmental relative humidity with North Atlantic tropical cyclone intensity and intensification rate |
title_short |
Relationship of environmental relative humidity with North Atlantic tropical cyclone intensity and intensification rate |
title_full |
Relationship of environmental relative humidity with North Atlantic tropical cyclone intensity and intensification rate |
title_fullStr |
Relationship of environmental relative humidity with North Atlantic tropical cyclone intensity and intensification rate |
title_full_unstemmed |
Relationship of environmental relative humidity with North Atlantic tropical cyclone intensity and intensification rate |
title_sort |
relationship of environmental relative humidity with north atlantic tropical cyclone intensity and intensification rate |
publisher |
Blackwell Publishing Ltd |
publishDate |
2012 |
url |
https://repository.hkust.edu.hk/ir/Record/1783.1-120468 https://doi.org/10.1029/2012GL053546 http://lbdiscover.ust.hk/uresolver?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rfr_id=info:sid/HKUST:SPI&rft.genre=article&rft.issn=0094-8276&rft.volume=39&rft.issue=20&rft.date=2012&rft.spage=&rft.aulast=Wu&rft.aufirst=&rft.atitle=Relationship+of+environmental+relative+humidity+with+North+Atlantic+tropical+cyclone+intensity+and+intensification+rate&rft.title=Geophysical+Research+Letters http://www.scopus.com/record/display.url?eid=2-s2.0-84868335488&origin=inward http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=LinksAMR&SrcApp=PARTNER_APP&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000310345200002 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
https://repository.hkust.edu.hk/ir/Record/1783.1-120468 Geophysical Research Letters, v. 39, (20), October 2012, article number L20809 0094-8276 1944-8007 https://doi.org/10.1029/2012GL053546 http://lbdiscover.ust.hk/uresolver?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rfr_id=info:sid/HKUST:SPI&rft.genre=article&rft.issn=0094-8276&rft.volume=39&rft.issue=20&rft.date=2012&rft.spage=&rft.aulast=Wu&rft.aufirst=&rft.atitle=Relationship+of+environmental+relative+humidity+with+North+Atlantic+tropical+cyclone+intensity+and+intensification+rate&rft.title=Geophysical+Research+Letters http://www.scopus.com/record/display.url?eid=2-s2.0-84868335488&origin=inward http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=LinksAMR&SrcApp=PARTNER_APP&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000310345200002 |
op_doi |
https://doi.org/10.1029/2012GL053546 |
container_title |
Geophysical Research Letters |
container_volume |
39 |
container_issue |
20 |
_version_ |
1766132460551143424 |