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Title: A new climatology of South American extratropical cyclogenesis with an intercomparison among ERA5 , JRA55 and the Brazilian Navy

Journal Article · · International Journal of Climatology
DOI: https://doi.org/10.1002/joc.8251 · OSTI ID:1999689
ORCiD logo [1];  [2];  [3];  [2];  [4];  [4];  [5]
  1. Department of Plants, Soils, and Climate Utah State University Logan Utah USA, Programa de Pós‐Graduação em Dinâmica dos Oceanos e da Terra Universidade Federal Fluminense Niterói Brazil
  2. Department of Plants, Soils, and Climate Utah State University Logan Utah USA
  3. Department of Plants, Soils, and Climate Utah State University Logan Utah USA, Department of Journalism and Communication Utah State University Logan Utah USA
  4. Universidade Federal Fluminense Niterói Brazil
  5. Programa de Pós‐Graduação em Dinâmica dos Oceanos e da Terra Universidade Federal Fluminense Niterói Brazil, Universidade Federal Fluminense Niterói Brazil
+ Show Author Affiliations

Abstract In South America, the most destructive extratropical cyclones occur over the southeastern quadrant of the continent, a region that includes some of the world's largest population centres. However, there are few studies of cyclogenesis in this region, and little is known about how the varying origins of these storms impact subsequent behaviour. By supplementing an observational record with current reanalysis data, this study reveals the general characteristics of cyclones that develop in the lee regions of the Andes and those that develop nearer the Atlantic coast. The comparative climatologies demonstrate that cyclone development in these separate contexts is driven by topography, local atmospheric circulations and basin‐scale climate oscillations. The analysis further reveals a low‐frequency seesaw of lee and coastal cyclogenesis, with cross‐basin ocean temperature differences playing a teleconnectional role.

Sponsoring Organization:
USDOE
Grant/Contract Number:
DE‐SC001660
OSTI ID:
1999689
Journal Information:
International Journal of Climatology, Journal Name: International Journal of Climatology Vol. 43 Journal Issue: 15; ISSN 0899-8418
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
United Kingdom
Language:
English

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