Results 31 to 40 of about 1,744 (240)

Lightning assimilation in the WRF model (Version 4.1.1): technique updates and assessment of the applications from regional to hemispheric scales [PDF]

Geoscientific Model Development, 2022
The lightning assimilation (LTA) technique in the Kain–Fritsch convective parameterization in the Weather Research and Forecasting (WRF) model has been updated and applied to continental and hemispheric simulations using lightning flash data obtained ...
D. Kang, N. K. Heath, N. K. Heath, R. C. Gilliam, T. L. Spero, J. E. Pleim   +5 more
doaj   +1 more source

Interhemispheric transport and the role of convective parameterizations [PDF]

Journal of Geophysical Research: Atmospheres, 1998
An F11 tracer simulation is performed here using the most recent Community Climate Model, the CCM3, of the National Center for Atmospheric Research (NCAR). Another F11 simulation performed with NCAR's CCM2 [Hartley et al, 1994] is also presented. Comparing the F11 mixing ratio in the models to Atmospheric Lifetime Experiment/Global Atmospheric Gases ...
A. B. Gilliland, D. E. Hartley
openaire   +1 more source

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

Natural 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, A. Bartzokas, V. Kotroni, K. Lagouvardos   +3 more
doaj   +1 more source

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

Journal 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, Catherine Rio, Jean‐Yves Grandpeix, Jean‐Baptiste Madeleine, Frédérique Cheruy, Nicolas Rochetin, Arnaud Jam, Ionela Musat, Abderrahmane Idelkadi, Laurent Fairhead, Marie‐Alice Foujols, Lidia Mellul, Abdoul‐Khadre Traore, Jean‐Louis Dufresne, Olivier Boucher, Marie‐Pierre Lefebvre, Ehouarn Millour, Etienne Vignon, Jean Jouhaud, F. Bint Diallo, François Lott, Guillaume Gastineau, Arnaud Caubel, Yann Meurdesoif, Josefine Ghattas   +24 more
doaj   +1 more source

Improving precipitation simulations in CIESM through a new entrainment rate parameterization

npj 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, Chunsong Lu, Guang J. Zhang, Junjun Li, Lei Zhu, Hengqi Wang, Te Li, Xiaohao Guo, Sinan Gao, Yuhao Lin, Kai Yang, Wenhui Liu   +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

Atmosphere
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

Additive Gaussian Process Regression for Predictive Design of High‐Performance, Printable Silicones

Advanced Engineering Materials, EarlyView.
A chemistry‐aware design framework for tuning printable polydimethylsiloxane (PDMS) for vat photopolymerization (VPP) is developed using additive Gaussian process (GP) modeling. Polymer network mechanics informs variable groupings, feasible formulation constraints, and interaction variables.
Roxana Carbonell, Martha Leach, Hongtao Song, Carolyn Seepersad   +3 more
wiley   +1 more source

Sensitivity of Coupled Tropical Pacific Model Biases to Convective Parameterization in CESM1

Journal of Advances in Modeling Earth Systems, 2018
Six month coupled hindcasts show the central equatorial Pacific cold tongue bias development in a GCM to be sensitive to the atmospheric convective parameterization employed.
M. D. Woelfle, S. Yu, C. S. Bretherton, M. S. Pritchard   +3 more
doaj   +1 more source

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

Geophysical 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

Inverse Identification of Energy‐Dependent Laser Absorptivity in NiTi Laser Powder‐Bed Fusion via Calibrated Melt Pool Simulation

Advanced Engineering Materials, EarlyView.
A combined experimental–computational framework identifies energy‐dependent laser absorptivity for NiTi in laser powder‐bed fusion, applicable to conduction and transition modes. Single‐track experiments and thermofluid smoothed particle hydrodynamics simulations are coupled through inverse analysis of melt pool geometry.
Mohamadreza Afrasiabi, Hadi Moutablaleh, Ignatius A. Setiawan, Mehrshad Mehrpouya   +3 more
wiley   +1 more source