Results 1 to 10 of about 5,019 (261)
Warming-induced contraction of tropical convection delays and reduces tropical cyclone formation [PDF]
Nature Communications, 2023 The future risk of tropical cyclones (TCs) strongly depends on changes in TC frequency, but models have persistently produced contrasting projections. A satisfactory explanation of the projected changes also remains elusive.
Gan Zhang
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Journal of Advances in Modeling Earth Systems, 2022 This study investigates the effects of resolved deep convection on tropical rainfall and its multi‐scale variability. A series of aquaplanet simulations are analyzed using the Model for Prediction Across Scales‐Atmosphere with horizontal cell spacings ...
Rosimar Rios‐Berrios +4 more
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No decrease of tropical convection in individual deep convective systems with global warming. [PDF]
NPJ Clim Atmos SciAccording to the scientific consensus, tropical convection must decrease with global warming. This decrease is manifested by a decrease of the mass transported in the upward branch of the atmospheric overturning circulation - the convective mass flux - and a connected decrease of high clouds in the tropics, with implications for climate sensitivity. By
Bolot M, Roca R, Fiolleau T, Muller C.
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Overshooting convection in tropical cyclones [PDF]
Geophysical Research Letters, 2009 Using infrared satellite imagery, best‐track data, and reanalysis data, tropical cyclones are shown to contain a disproportionate amount of the deepest convection in the tropics. Although tropical cyclones account for only 7% of the deep convection in the tropics, they account for about 15% of the deep convection with cloud‐top temperatures below the ...
David M Romps, Zhiming Kuang
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Geophysical Research Letters, 2021 Convection is highly active on tropical islands. Based on a 3‐year radar climatology over Hainan Island, a mountainous tropical island in South China, we identified a distinct spatial dependence of convection initiation (CI) on the speed of the large ...
Lei Zhu +4 more
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Balanced dynamics and convection in the tropical troposphere [PDF]
Journal of Advances in Modeling Earth Systems, 2015 AbstractThis paper presents a conceptual picture of balanced tropical tropospheric dynamics inspired by recent observations. The most important factor differentiating the tropics from middle and higher latitudes is the absence of baroclinic instability; upward motion occurs primarily via deep convective processes.
David J Raymond, Željka Fuchs
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Evolution of convection during tropical cyclogenesis [PDF]
Geophysical Research Letters, 2007 Central to tropical cyclogenesis is the changing behavior of moist convection as the cyclone evolves. Based on a cumulus ensemble model run in weak temperature gradient mode, we suggest that the mid‐level vortex created by early‐stage convection stabilizes the environment in way that favors further development.
David J Raymond, Sharon L Sessions
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Influence of the Madden‐Julian Oscillation on Continental United States Hurricane Landfalls
Geophysical Research Letters, 2023 The Madden‐Julian oscillation (MJO) significantly impacts North Atlantic hurricanes, with increased hurricane activity occurring when the MJO enhances convection over Africa and the tropical Indian Ocean and suppressed hurricane activity occurring when ...
Philip J. Klotzbach +6 more
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Remote Sensing, 2022 The East Asian winter monsoon (EAWM) is the most important climate system for transporting Arctic cold air to the tropics in boreal winter. Rapid intensification of the EAWM, such as a cold surge, can lead to increased tropical convection over the ...
Tianjiao Ma +6 more
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The Combined QBO and ENSO Influence on Tropical Cyclone Activity over the North Atlantic Ocean
Atmosphere, 2021 The Quasi-Biennal Oscillation (QBO) and the El Niño-Southern Oscillation (ENSO) largely modulate the zonal wind in the tropics. Previous studies showed that QBO phases produce changes in deep convection through an increase/decrease in the tropopause ...
Alejandro Jaramillo +3 more
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