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RISA Numerical Model for Chemical and Meteorological Processes in the Atmospheric Boundary Layer. Part II: A Case Study of the Air Quality Situation in Athens, Greece
Publisher: American Meteorological Society
Abstract: A three-dimensional coupled mesoscale meteorological and photochemical model has been applied to the Athens basin in Greece. The Athens area experiences episodes of very high air pollution levels a few times every year. A ...
A Numerical Model for Chemical and Meteorological Processes in the Atmospheric Boundary Layer. Part I: A Model Description and a One-Dimensional Parameter Study
Publisher: American Meteorological Society
Abstract: A numerical flow model is presented for the atmospheric boundary layer, including dispersion and chemical transformations of air pollutants. The model is a three-dimensional time-dependent one for the mesoscale based on ...
Wind Turning in the Planetary Boundary Layer in CMIP6 Models
Publisher: American Meteorological Society
Observations of Stably Stratified Shear-Driven Atmospheric Turbulence at Low and High Richardson Numbers
Publisher: American Meteorological Society
Abstract: Stably stratified shear-driven turbulence is analyzed using the gradient Richardson number, Ri, as the stability parameter. The method overcomes the statistical problems associated with the widely used Monin?Obukhov stability ...
On the Arctic Wintertime Climate in Global Climate Models
Publisher: American Meteorological Society
Abstract: nergy fluxes important for determining the Arctic surface temperatures during winter in present-day simulations from the Coupled Model Intercomparison Project phase 3 (CMIP3) multimodel dataset are investigated. The model ...
Evaluation of Near-Surface Variables and the Vertical Structure of the Boundary Layer in CMIP5 Models
Publisher: American Meteorological Society
Abstract: he diurnal cycles of near-surface variables and turbulent heat fluxes are evaluated in 16 models from phase 5 of CMIP (CMIP5) and compared with observations from 26 flux tower sites. The diurnal cycle of 2-m temperature ...
Cloud Microphysical Relationships in California Marine Stratus
Publisher: American Meteorological Society
Abstract: Cloud microphysical measurements off the southern California coast are presented and compared with in situ airborne measurements of cloud condensation nuclei (CCN) spectra. Large-scale variations in cloud droplet concentrations ...
The Importance of Representing Mixed-Phase Clouds for Simulating Distinctive Atmospheric States in the Arctic
Publisher: American Meteorological Society
Abstract: bservations from the Surface Heat Budget of the Arctic Ocean experiment (SHEBA) suggest that the Arctic Basin is characterized by two distinctly different preferred atmospheric states during wintertime. These states appear ...
Evaluation of Near-Surface Parameters in the Two Versions of the Atmospheric Model in CESM1 using Flux Station Observations
Publisher: American Meteorological Society
Abstract: his paper describes the performance of the Community Atmosphere Model (CAM) versions 4 and 5 in simulating near-surface parameters. CAM is the atmospheric component of the Community Earth System Model (CESM). Most of the ...
Representation of Arctic Moist Intrusions in CMIP5 Models and Implications for Winter Climate Biases
Publisher: American Meteorological Society
Abstract: his paper examines the wintertime northward moisture flux at 70°N from 1981?2005 in 31 of the CMIP5 models compared with the ERA-Interim reanalysis product. The models? total zonally integrated northward moisture flux is ...