On the Role of Surface Fluxes and WISHE in Tropical Cyclone Intensification

The authors show that the feedback between surface wind and surface enthalpy flux is an important influence on tropical cyclone evolution, even though, as with at least some classical instability mechanisms, such a feedback is not strictly necessary. When the wind speed is artificially capped in ide...

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Main Authors: Emanuel, Kerry Andrew, Zhang, Fuqing Zhang
Other Authors: Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences
Format: Article
Language:en_US
Published: American Meteorological Society 2017
Online Access:http://hdl.handle.net/1721.1/108285
https://orcid.org/0000-0002-2066-2082
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author Emanuel, Kerry Andrew
Zhang, Fuqing Zhang
author2 Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences
author_facet Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences
Emanuel, Kerry Andrew
Zhang, Fuqing Zhang
author_sort Emanuel, Kerry Andrew
collection MIT
description The authors show that the feedback between surface wind and surface enthalpy flux is an important influence on tropical cyclone evolution, even though, as with at least some classical instability mechanisms, such a feedback is not strictly necessary. When the wind speed is artificially capped in idealized numerical experiments, storm development is slowed and storms achieve a smaller final intensity. When it is capped in simulations of an actual storm (Hurricane Edouard of 2014), the quality of the simulations is strongly compromised; for example, little development occurs when the wind speed is capped at 5 m s{superscript −1], in contrast to the category-3 hurricane shown by observations and produced by the control experiment.
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spelling mit-1721.1/1082852022-09-26T15:25:33Z On the Role of Surface Fluxes and WISHE in Tropical Cyclone Intensification Emanuel, Kerry Andrew Zhang, Fuqing Zhang Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences Emanuel, Kerry Andrew Zhang, Fuqing Zhang The authors show that the feedback between surface wind and surface enthalpy flux is an important influence on tropical cyclone evolution, even though, as with at least some classical instability mechanisms, such a feedback is not strictly necessary. When the wind speed is artificially capped in idealized numerical experiments, storm development is slowed and storms achieve a smaller final intensity. When it is capped in simulations of an actual storm (Hurricane Edouard of 2014), the quality of the simulations is strongly compromised; for example, little development occurs when the wind speed is capped at 5 m s{superscript −1], in contrast to the category-3 hurricane shown by observations and produced by the control experiment. National Science Foundation (U.S.) (Grant AGS 1305798) United States. Office of Naval Research (Grant N000140910526) United States. Office of Naval Research (Grant N000141410062) Massachusetts Institute of Technology (Houghton Lecturer Fund) 2017-04-20T14:51:43Z 2017-04-20T14:51:43Z 2016-04 2016-02 Article http://purl.org/eprint/type/JournalArticle 0022-4928 1520-0469 http://hdl.handle.net/1721.1/108285 Zhang, Fuqing, and Kerry Emanuel. “On the Role of Surface Fluxes and WISHE in Tropical Cyclone Intensification.” Journal of the Atmospheric Sciences 73.5 (2016): 2011–2019. © 2017 American Meteorological Society https://orcid.org/0000-0002-2066-2082 en_US http://dx.doi.org/10.1175/jas-d-16-0011.1 Journal of the Atmospheric Sciences Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Meteorological Society American Meteorological Society
spellingShingle Emanuel, Kerry Andrew
Zhang, Fuqing Zhang
On the Role of Surface Fluxes and WISHE in Tropical Cyclone Intensification
title On the Role of Surface Fluxes and WISHE in Tropical Cyclone Intensification
title_full On the Role of Surface Fluxes and WISHE in Tropical Cyclone Intensification
title_fullStr On the Role of Surface Fluxes and WISHE in Tropical Cyclone Intensification
title_full_unstemmed On the Role of Surface Fluxes and WISHE in Tropical Cyclone Intensification
title_short On the Role of Surface Fluxes and WISHE in Tropical Cyclone Intensification
title_sort on the role of surface fluxes and wishe in tropical cyclone intensification
url http://hdl.handle.net/1721.1/108285
https://orcid.org/0000-0002-2066-2082
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