Results 11 to 20 of about 5,019 (261)

Modelling deep convection and its impacts on the tropical tropopause layer [PDF]

open access: yesAtmospheric Chemistry and Physics, 2010
The UK Met Office's Unified Model is used at a climate resolution (N216, ~0.83°×~0.56°, ~60 km) to assess the impact of deep tropical convection on the structure of the tropical tropopause layer (TTL). We focus on the potential for
J. S. Hosking   +3 more
doaj   +1 more source

More Intense, Organized Deep Convection With Shrinking Tropical Ascent Regions

open access: yesGeophysical Research Letters, 2022
Changes in the frequency and morphology of convection in a warming climate have major implications for the hydrologic cycle and continue to be a large source of variability in climate models.
Kyle R. Wodzicki, Anita D. Rapp
doaj   +1 more source

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

open access: yesGeophysical 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   +2 more
openaire   +5 more sources

Stochastic and mesoscopic models for tropical convection [PDF]

open access: yesProceedings 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]

open access: yesAtmospheric 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

open access: yesEarth 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   +4 more
doaj   +1 more source

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

open access: yesNature 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   +9 more
doaj   +1 more source

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

open access: yes, 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

Influence of stratospheric sudden warming on the tropical intraseasonal convection

open access: yesEnvironmental Research Letters, 2020
Madden–Julian oscillation (MJO), the dominant mode of intraseasonal variability in the tropical troposphere, has recently been shown to have a great impact on Northern Hemisphere (NH) extratropical stratosphere.
Feiyang Wang   +3 more
doaj   +1 more source

Tropical Cirrus in Global Storm‐Resolving Models: 1. Role of Deep Convection

open access: yesEarth and Space Science, 2022
Pervasive cirrus clouds in the upper troposphere and tropical tropopause layer (TTL) influence the climate by altering the top‐of‐atmosphere radiation balance and stratospheric water vapor budget.
J. M. Nugent   +4 more
doaj   +1 more source

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