Results 51 to 60 of about 1,502 (278)

On ALADIN precipitation modeling and validation in an Alpine watershed [PDF]

Annales Geophysicae, 2003
Highly resolved precipitation forecasts are necessary in many applications, especially in mountain meteorology and flash flood forecasts for small- to medium-sized alpine watersheds.
B. Ahrens, K. Jasper, J. Gurtz
doaj   +1 more source

The Atmospheric Aerosol over Western Greece-Six Years of Aerosol Observations at the Navarino Environmental Observatory

Atmosphere, 2021
The Eastern Mediterranean is a highly populated area with air quality problems. It is also where climate change is already noticed by higher temperatures and s changing precipitation pattern.
Hans-Christen Hansson, Peter Tunved, Radovan Krejci, Eyal Freud, Nikos Kalivitis, Tabea Hennig, Giorgos Maneas, Evangelos Gerasopoulos   +7 more
doaj   +1 more source

A multimodel intercomparison study of variable‐resolution global models with grid refinement over the Arctic and Antarctic

Quarterly Journal of the Royal Meteorological Society, EarlyView.
We document the protocol and first results from the first ever coordinated multimodel variable‐resolution experiment set with refinement over the polar regions. We find that the refinement generally yields model‐dependent effects. The most consistent improvement is an amelioration of the upper‐level cold bias in the polar regions that translates into ...
Lise Seland Graff, Dörthe Handorf, Raphael Köhler, Xavier Levine, René R. Wijngaard, Gareth J. Marshall, Alexey Yu. Karpechko, Ryan S. Williams, Priscilla A. Mooney   +8 more
wiley   +1 more source

Sensitivity of mesoscale model urban boundary layer meteorology to the scale of urban representation [PDF]

Atmospheric Chemistry and Physics, 2011
Mesoscale modeling of the urban boundary layer requires careful parameterization of the surface due to its heterogeneous morphology. Model estimated meteorological quantities, including the surface energy budget and canopy layer variables, will respond ...
D. D. Flagg, P. A. Taylor
doaj   +1 more source

Characterization of synoptic environment for mesoscale convective systems over South Korea using ERA5 reanalysis data

Quarterly Journal of the Royal Meteorological Society, EarlyView.
In this study, the synoptic conditions for modes of mesoscale convective systems (MCSs) in South Korea are generalized based on composite analysis. The preferred precipitation region, synoptic patterns, moisture transport, sea surface temperature and thermodynamic and dynamic instabilities are characterized according to four modes: convective cells (CC)
Jeong‐Eun Lee, GyuWon Lee
wiley   +1 more source

Attributing Long‐Term Trends in Marine Low Cloud Morphologies to Aerosols and Large‐Scale Meteorology With Deep Learning

Geophysical Research Letters
The response of marine low‐cloud mesoscale morphologies to climate change and emission reductions remains poorly understood. Here, we link long‐term trends in six cloud morphologies to variations in large‐scale meteorology and aerosols.
Jihu Liu, Yang Cao, Yuanyuan Wu, Yannian Zhu, Daniel Rosenfeld, Yu Zhang, Kang‐En Huang, Minghuai Wang   +7 more
doaj   +1 more source

A simple parameterization of the short-wave aerosol optical properties for surface direct and diffuse irradiances assessment in a numerical weather model [PDF]

Geoscientific Model Development, 2014
Broadband short-wave (SW) surface direct and diffuse irradiances are not typically within the set of output variables produced by numerical weather prediction (NWP) models. However, they are frequently requested for solar energy applications. In order to
J. A. Ruiz-Arias, J. Dudhia, C. A. Gueymard   +2 more
doaj   +1 more source

Exploiting Aeolus winds in a regional numerical weather prediction model

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Aeolus measured winds have proven to be beneficial for global models. However, demonstrating positive impact for limited‐area models has been a challenge so far. For the first time, we have demonstrated a statistically significant positive impact of Aeolus winds in a limited‐area model by using the 4DVar data assimilation technique and the most recent ...
Gert‐Jan Marseille, Roohollah Azad, Martin Ridal, Susanna Hagelin   +3 more
wiley   +1 more source

Evaluating anisotropy‐based Monin–Obukhov similarity theory over canopies and complex terrain

Quarterly Journal of the Royal Meteorological Society, EarlyView.
This study shows that an anisotropy‐based generalization of Monin–Obukhov surface‐layer scaling (SC23) applies readily across a wide range of atmospheric conditions with variable terrain, canopies, and land‐cover complexity. This work focuses on the scaling of velocity variances for 7 years at the 47 sites in the National Ecological Observation Network
Tyler S. Waterman, Ivana Stiperski, Nathaniel Chaney, Marc Calaf   +3 more
wiley   +1 more source

Two-dimensional simulations of katabatic layers observed during the GIMEX experiment [PDF]

Annales Geophysicae, 1999
The hydrostatic model SALSA is used to simulate a particular event observed during the Greenland Ice Margin EXperiment "GIMEX" (on July 12th, 1991).
A. Elkhalfi, A. Elkhalfi
doaj   +1 more source