4.7 Article

Air-Sea Interactions in the Cold Wakes of Tropical Cyclones

期刊

GEOPHYSICAL RESEARCH LETTERS
卷 48, 期 2, 页码 -

出版社

AMER GEOPHYSICAL UNION
DOI: 10.1029/2020GL091185

关键词

air-sea feedbacks; cloud coverage; cold wakes; tropical cyclones; SST anomalies

资金

  1. ESA [4000127657/19/NL/FF/gp]
  2. HPC-TRES grant [2020-10]
  3. TWIGA project from the European Union's Horizon 2020 Research and Innovation Program [776691]
  4. H2020 Societal Challenges Programme [776691] Funding Source: H2020 Societal Challenges Programme

向作者/读者索取更多资源

Tropical cyclones generate large and wide cold wakes along their trajectories, impacting the evolution of the cyclones themselves and reducing cloud coverage and rainfall. This study sheds light on the mechanisms of air-sea feedbacks triggered by cold wakes, which may vary at different latitudes. Further research is needed to assess the significant impact of cyclone-induced cloud cover anomalies on Earth's radiative budget.
Tropical cyclones generate a large and wide cold wake along their trajectories, which conditions the subsequent evolution of the tropical cyclone themselves. The cold wakes persist for weeks, impacting both the upper ocean, the air-sea fluxes, and the atmosphere. The study by Z. Ma et al. (2020, https://doi.org/10.1029/2020GL088873) for the first time analyzes a composite of remotely sensed data sets to show that cold wakes modify surface winds and reduce cloud coverage and rainfall. These results contribute to shedding light on the mechanisms at the origin of the air-sea feedbacks, which can differ at different latitudes depending on the stability of the marine atmospheric boundary layer. The work stimulates further research to assess whether the cloud cover anomalies induced by tropical cyclones significantly modify the radiative budget of the Earth.

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