Results 21 to 30 of about 57,002 (295)

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
exaly   +2 more sources

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, Carl J. Schreck III, Gilbert P. Compo, Kimberly M. Wood, Eric C. J. Oliver, Steven G. Bowen, Michael M. Bell   +6 more
doaj   +1 more source

Linkage of Strong Intraseasonal Events of the East Asian Winter Monsoon to the Tropical Convections over the Western Pacific

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, Wen Chen, Hainan Gong, Peng Hu, Yang Jiao, Xiadong An, Lin Wang   +6 more
doaj   +1 more source

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, Christian Dominguez, Graciela Raga, Arturo I. Quintanar   +3 more
doaj   +1 more source

Shear-convection interactions, and orientation of tropical squall lines [PDF]

Geophysical Research Letters, 2021
Abstract Squall lines are known to be the consequence of the interaction of low‐level shear with cold pools associated with convective downdrafts. Also, as the magnitude of the shear increases beyond a critical shear, squall lines tend to orient themselves.
Abramian, Sophie, Muller, Caroline, Risi, Camille   +2 more
openaire   +5 more sources

Stochastic and mesoscopic models for tropical convection [PDF]

Proceedings of the National Academy of Sciences, 2002
A new way to parametrize certain aspects of tropical convection through stochastic and mesoscopic models is developed here. The technical idea is to adapt tools from statistical physics and materials science to model important unresolved features of tropical convection.
Majda, Andrew J., Khouider, Boualem
openaire   +2 more sources

Simulating deep convection with a shallow convection scheme [PDF]

Atmospheric Chemistry and Physics, 2011
Convective processes profoundly affect the global water and energy balance of our planet but remain a challenge for global climate modeling. Here we develop and investigate the suitability of a unified convection scheme, capable of handling both shallow ...
C. Hohenegger, C. S. Bretherton
doaj   +1 more source

Tropical Cirrus in Global Storm‐Resolving Models: 2. Cirrus Life Cycle and Top‐of‐Atmosphere Radiative Fluxes

Earth and Space Science, 2022
Cirrus clouds of various thicknesses and radiative characteristics extend over much of the tropics, especially around deep convection. They are difficult to observe due to their high altitude and sometimes small optical depths. They are also difficult to
S. M. Turbeville, J. M. Nugent, T. P. Ackerman, C. S. Bretherton, P. N. Blossey   +4 more
doaj   +1 more source

Model spread in tropical low cloud feedback tied to overturning circulation response to warming

Nature Communications, 2022
The magnitude of the tropical low cloud feedback, which contributes considerably to uncertainty in estimates of climate sensitivity, is closely linked to tropical deep convection and its effects on the tropical atmospheric overturning circulation.
Kathleen A. Schiro, Hui Su, Fiaz Ahmed, Ni Dai, Clare E. Singer, Pierre Gentine, Gregory S. Elsaesser, Jonathan H. Jiang, Yong-Sang Choi, J. David Neelin   +9 more
doaj   +1 more source

Tropical cirrus clouds of convective and non-convective origins [PDF]

, 2022
Abstract. The occurrence of cirrus clouds in the tropics (24 °S–24 °N) is analyzed using the 2007–2015 monthly data from the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) and the fifth generation reanalysis product (ERA5) of the European Centre for Medium-Range Weather Forecasts.
Huang, Qin, Dinh, Tra
openaire   +2 more sources