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Journal Article

Hurricane-type vortices in a general circulation

MPS-Authors
http://pubman.mpdl.mpg.de/cone/persons/resource/persons37102

Bengtsson,  Lennart
MPI for Meteorology, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons37110

Botzet,  Michael
MPI for Meteorology, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons37141

Esch,  Monika
MPI for Meteorology, Max Planck Society;

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Fulltext (public)

j.1600-0870.1995.t01-1-00003.x.pdf
(Publisher version), 2MB

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Citation

Bengtsson, L., Botzet, M., & Esch, M. (1995). Hurricane-type vortices in a general circulation. Tellus Series A-Dynamic Meteorology and Oceanography, 47, 175-196. doi:10.1034/j.1600-0870.1995.t01-1-00003.x.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0014-A00A-2
Abstract
A very high resolution atmospheric general circulation model, T106-L19, has been used for the simulation of hurricanes in a multi-year numerical experiment. Individual storms as well as their geographical and seasonal distribution agree remarkably well with observations. In spite of the fact that only the thermal and dynamical structure of the storms have been used as criteria of their identification, practically all of them occur in areas where the sea surface temperature is higher or equal to 26 °C. There are considerable variations from year to year in the number of storms in spite of the fact that there are no interannual variations in the SST pattern. It is found that the number of storms in particular areas appear to depend on the intensity of the Hadley-Walker cell. The result is clearly resolution-dependant. At lower horizonal resolution, T42, for example, the intensity of the storms is significantly reduced and their overall structure is less realistic, including their vertical form and extent.