Results 31 to 40 of about 56,503 (208)

Testing the role of radiation in determining tropical cloud top temperature [PDF]

open access: yes, 2012
Tropical anvil clouds that detrain near the mixing barrier near 13km in the tropics have a strong effect on the longwave and shortwave energy budgets of Earth.
Harrop, Bryce
core   +2 more sources

Impact of tropical convective conditions on solar irradiance forecasting based on cloud motion vectors

open access: yesEnvironmental Research Letters, 2022
Intra-day forecasts of global horizontal solar irradiance (GHI) are widely produced by displacing existing clouds on a geo-stationary satellite image to their future locations with cloud motion vectors (CMVs) derived from preceding images.
Arindam Roy   +4 more
doaj   +1 more source

Factors controlling tropospheric O3, OH, NOx, and SO2 over the tropical Pacific during PEM-Tropics B [PDF]

open access: yes, 2001
Observations over the tropical Pacific during the Pacific Exploratory Mission (PEM)-Tropics B experiment (March-April 1999) are analyzed. Concentrations of CO and long-lived nonmethane hydrocarbons in the region are significantly enhanced due to ...
Atlas, EL   +15 more
core   +1 more source

Convectively Generated Gravity Waves in High Resolution Models of Tropical Dynamics

open access: yesJournal of Advances in Modeling Earth Systems, 2018
We investigate numerical models that display the transition of global climate modeling from coarse grids, at which convection and gravity waves are still parameterized, toward finer resolutions, where both are treated explicitly.
Sebastian K. Müller   +4 more
doaj   +1 more source

Multiple Equilibria in a Single-Column Model of the Tropical Atmosphere

open access: yes, 2007
A single-column model run under the weak temperature gradient approximation, a parameterization of large-scale dynamics appropriate for the tropical atmosphere, is shown to have multiple stable equilibria.
A. H. Sobel   +21 more
core   +1 more source

Response of the West African Monsoon to the Madden–Julian Oscillation [PDF]

open access: yes, 2009
Observations show that rainfall over West Africa is influenced by the Madden-Julian Oscillation (MJO). A number of mechanisms have been suggested: 1) forcing by equatorial waves; 2) enhanced monsoon moisture supply; and 3) increased African easterly wave
Lavender, Sally L., Matthews, Adrian J.
core   +1 more source

Convection Initiation Associated With Ambient Winds and Local Circulations Over a Tropical Island in South China

open access: yesGeophysical 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
doaj   +1 more source

Convective Precipitation Efficiency Observed in the Tropics

open access: yesGeophysical Research Letters, 2019
AbstractPrecipitation efficiency refers to the fraction of condensate in the atmosphere that reaches the surface as precipitation. A high‐quality data set of radar‐estimated precipitation rates and convective scale vertical velocity near Darwin, Australia, is used to construct the first estimate of precipitation efficiency at convective scales for a ...
Narsey, S.   +6 more
openaire   +2 more sources

Development of convection along the SPCZ within a Madden-Julian oscillation [PDF]

open access: yes, 1996
A subtropical Rossby wave propagation mechanism is proposed to account for the poleward and eastward progression of intraseasonal convective anomalies along the South Pacific Convergence Zone (SPCZ) that is observed in a significant proportion of Madden ...
Ardanuy   +25 more
core   +2 more sources

ResU‐Deep: Improving the Trigger Function of Deep Convection in Tropical Regions With Deep Learning

open access: yesJournal of Advances in Modeling Earth Systems, 2023
Modeling deep convection accurately in tropical regions is important. However, biases remain in current trigger functions. To alleviate the overestimation of frequency and wrong depiction of the diurnal cycle, we propose a deep convection trigger ...
Mengxuan Chen   +3 more
doaj   +1 more source

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