Results 41 to 50 of about 29,399 (298)

Helioseismology can test the Maxwell-Boltzmann distribution [PDF]

open access: yes, 1998
Nuclear reactions in stars occur between nuclei in the high-energy tail of the energy distribution and are sensitive to possible deviations from the standard equilibrium thermal-energy distribution.
Anders   +28 more
core   +2 more sources

Verification of precipitation forecasts of MM5 model over Epirus, NW Greece, for various convective parameterization schemes [PDF]

open access: yesNatural Hazards and Earth System Sciences, 2012
The mesoscale meteorological model MM5 is applied to 22 selected days with intense precipitation in the region of Epirus, NW Greece. At first, it was investigated whether and to what extend an increased horizontal resolution (from 8 to 2 km) improves the
O. A. Sindosi   +3 more
doaj   +1 more source

Influence of assimilating rainfall derived from WSR-88D radar on the rainstorm forecasts over the southwestern United States [PDF]

open access: yes, 2006
In this study, the impact of rainfall assimilation on the forecasts of convective rainfall over the mountainous areas in the southwestern United States is investigated. The rainfall is derived from the U.S.
Gao, X, Sorooshian, S, Xiao, Q, Xu, J
core   +3 more sources

LMDZ6A: The Atmospheric Component of the IPSL Climate Model With Improved and Better Tuned Physics

open access: yesJournal of Advances in Modeling Earth Systems, 2020
This study presents the version of the LMDZ global atmospheric model used as the atmospheric component of the Institut Pierre Simon Laplace coupled model (IPSL‐CM6A‐LR) to contribute to the 6th phase of the international Coupled Model Intercomparison ...
Frédéric Hourdin   +24 more
doaj   +1 more source

Improving precipitation simulations in CIESM through a new entrainment rate parameterization

open access: yesnpj Climate and Atmospheric Science
Entrainment rate parameterization is important for convection schemes but uncertain in climate models. A new deep convective entrainment rate (λ) parameterization (HL parameterization) is developed from aircraft observations and implemented into the ...
Xin He   +11 more
doaj   +1 more source

Impact of Cumulus Options from Weather Research and Forecasting with Chemistry in Atmospheric Modeling in the Andean Region of Southern Ecuador

open access: yesAtmosphere
Cumulus parameterization schemes model the subgrid-scale effects of moist convection, affecting the prognosis of cloud formation, rainfall, energy levels reaching the surface, and air quality.
Rene Parra
doaj   +1 more source

Potential Predictability of the Madden‐Julian Oscillation in a Superparameterized Model

open access: yesGeophysical Research Letters, 2023
The Madden‐Julian Oscillation (MJO) is a promising target for improving sub‐seasonal weather forecasts. Current forecast models struggle to simulate the MJO due to imperfect convective parameterizations and mean state biases, degrading their forecast ...
Sarah Weidman, Zhiming Kuang
doaj   +1 more source

Wet scavenging of soluble gases in DC3 deep convective storms using WRF-Chem simulations and aircraft observations [PDF]

open access: yes, 2016
We examine wet scavenging of soluble trace gases in storms observed during the Deep Convective Clouds and Chemistry (DC3) field campaign. We conduct high-resolution simulations with the Weather Research and Forecasting model with Chemistry (WRF-Chem) of ...
Allen, Dale J   +25 more
core   +2 more sources

A Parameterization of Convective Dust Storms for Models with Mass-Flux Convection Schemes [PDF]

open access: yesJournal of the Atmospheric Sciences, 2015
Abstract Cold pool outflows, generated by downdrafts from moist convection, can generate strong winds and therefore uplift of mineral dust. These so-called haboob convective dust storms occur over all major dust source areas worldwide and contribute substantially to emissions in northern Africa, the world’s largest source.
Pantillon, F.   +3 more
openaire   +2 more sources

A Convection Parameterization for Low-CAPE Environments [PDF]

open access: yesMonthly Weather Review, 2020
AbstractNumerical models that are unable to resolve moist convection in the atmosphere employ physical parameterizations to represent the effects of the associated processes on the resolved-scale state. Most of these schemes are designed to represent the dominant class of cumulus convection that is driven by latent heat release in a conditionally ...
Ron McTaggart-Cowan   +4 more
openaire   +1 more source

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