The large-scale modulation of subtropical cyclogenesis in the central and eastern Pacific Ocean

An analysis of the composite large-scale circulation associated with periods of enhanced (active) or diminished (inactive) cyclogenesis in the subtropical central and eastern Pacific Ocean is presented. It revealed that the occurrence of subtropical cyclones is strongly linked to the strength and lo...

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Bibliographic Details
Published inMonthly weather review Vol. 132; no. 7; pp. 1813 - 1828
Main Authors OTKIN, Jason A, MARTIN, Jonathan E
Format Journal Article
LanguageEnglish
Published Boston, MA American Meteorological Society 01.07.2004
Subjects
Atmospheric circulation
Climate
Cyclones
Earth, ocean, space
Exact sciences and technology
External geophysics
Meteorology
Ocean-atmosphere interaction
Temperature
Equatorial Pacific
North Pacific
Pacific Ocean
Rossby wave
Northern Hemisphere
world ocean
meteorology
Energy conversion
wave dispersion
Pacific Ocean
Atmospheric radiation
troposphere
Waveguide
Cyclogenesis
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Summary:An analysis of the composite large-scale circulation associated with periods of enhanced (active) or diminished (inactive) cyclogenesis in the subtropical central and eastern Pacific Ocean is presented. It revealed that the occurrence of subtropical cyclones is strongly linked to the strength and location of the Asian jet, with active periods characterized by a weaker and zonally retracted Asian jet, while inactive periods are characterized by a stronger and zonally elongated Asian jet. It further showed that the lack of subtropical cyclones during most incorrect inactive periods was associated with a strengthened and zonally elongated Asian jet.
ISSN:0027-0644
1520-0493
DOI:10.1175/1520-0493(2004)132<1813:tlmosc>2.0.co;2