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RISEvaluation of Trade Cumulus in the ECMWF Model with Observations from CALIPSO
Publisher: American Meteorological Society
Abstract: Cloud?Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) are used to assess trade cumulus cloudiness in three versions of the Integrated Forecasting System of the European Centre for Medium-Range Weather ...
Evaluating Cloud Frequency of Occurrence and Cloud-Top Height Using Spaceborne Lidar Observations
Publisher: American Meteorological Society
Abstract: A strategy for model evaluation using spaceborne lidar observations is presented. Observations from the Geoscience Laser Altimeter System are recast onto the model grid to assess the ability of two versions of the Integrated ...
A Dual Mass Flux Framework for Boundary Layer Convection. Part I: Transport
Publisher: American Meteorological Society
Abstract: This study considers the question of what is the least complex bulk mass flux framework that can still conceptually reproduce the smoothly varying coupling between the shallow convective cloud layer and the subcloud mixed ...
The Impact of Stratocumulus Cloud Radiative Properties on Surface Heat Fluxes Simulated with a General Circulation Model
Publisher: American Meteorological Society
Abstract: When sea surface temperatures are prescribed at its lower boundary, the University of California, Los Angeles (UCLA) atmospheric general circulation model (AGCM) produces a realistic simulation of planetary boundary layer ...
On the Structure of the Lower Troposphere in the Summertime Stratocumulus Regime of the Northeast Pacific
Publisher: American Meteorological Society
Abstract: Data collected in situ as part of the second field study of the Dynamics and Chemistry of Marine Stratocumulus field program are used to evaluate the state of the atmosphere in the region of field operations near 30°N, ...
Evaluation of Forecasted Southeast Pacific Stratocumulus in the NCAR, GFDL, and ECMWF Models
Publisher: American Meteorological Society
Abstract: Forecasts of southeast Pacific stratocumulus at 20°S and 85°W during the East Pacific Investigation of Climate (EPIC) cruise of October 2001 are examined with the ECMWF model, the Atmospheric Model (AM) from GFDL, the ...
Observations of Kinematics and Thermodynamic Structure Surrounding a Convective Storm Cluster over a Low Mountain Range
Publisher: American Meteorological Society
Abstract: Measurements of a convective storm cluster in the northern Black Forest in southwest Germany have revealed the development of a warm and dry downdraft under its anvil cloud that had an inhibiting effect on the subsequent ...
Mesoscale Wind Regimes in Chile at 30°S
Publisher: American Meteorological Society
Abstract: In November of 1999, four permanent surface stations were installed in the vicinity of the surface ozone monitoring station on the summit of the Cerro Tololo (2200 m MSL) in Chile at 30°S. These stations were used to study ...
Intercomparison and Interpretation of Single-Column Model Simulations of a Nocturnal Stratocumulus-Topped Marine Boundary Layer
Publisher: American Meteorological Society
Abstract: Ten single-column models (SCMs) from eight groups are used to simulate a nocturnal nonprecipitating marine stratocumulus-topped mixed layer as part of an intercomparison organized by the Global Energy and Water Cycle ...
Scientific Challenges of Convective-Scale Numerical Weather Prediction
Publisher: American Meteorological Society
Abstract: AbstractAfter extensive efforts over the course of a decade, convective-scale weather forecasts with horizontal grid spacings of 1?5 km are now operational at national weather services around the world, accompanied by ...