Study of Midlatitude and Arctic Aerosol-Cloud-Radiation Feedbacks Based on LES Model with Explicit Ice and Liquid Phase Microphysics.

The proposed work is aimed at investigating the cloud radiation feedbacks in midlatitude, subtropical, and high latitude low level clouds. We will continue the study of marine stratocumulus clouds using LES simulations based on FIRE I and FIRE I i/ASTEX observational data. The data will be used to v...

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Bibliographic Details
Main Author: Kogan, Yefim L.
Other Authors: OKLAHOMA UNIV NORMAN
Format: Text
Language:English
Published: 1996
Subjects:
Meteorology
*CLOUD PHYSICS
SIMULATION
AEROSOLS
SCALE MODELS
NUMERICAL ANALYSIS
RADIATIVE TRANSFER
MARINE ATMOSPHERES
FEEDBACK
STRATUS CLOUDS
CIMMS COMPUTER PROGRAM
MARINE BOUNDARY LAYER
WATER DROPLETS
MICROPHYSICS
Arctic
Online Access:http://www.dtic.mil/docs/citations/ADA317771
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA317771
Description
Summary:The proposed work is aimed at investigating the cloud radiation feedbacks in midlatitude, subtropical, and high latitude low level clouds. We will continue the study of marine stratocumulus clouds using LES simulations based on FIRE I and FIRE I i/ASTEX observational data. The data will be used to validate the CIMMS LES model and to improve our understanding of the interaction between the microphysical, radiative, and thermodynamical processes. Validation of the model against observations will result in further refinement and improvement in the model physical and numerical formulation. The modeling part of the research will be based on the CIMMS 3-D LES model of a stratocumulus cloud layer that includes an explicit formulation of aerosol and cloud drop size resolving microphysics and radiation. The study of mixed phase clouds will use the new version of the CIMMS model which includes also explicit formulation of the ice phase microphysics. Depending on the physics and the scale of the studied phenomena, the model may be also formulated in a 2-D framework with bulk treatment of microphysics. In accordance with the FIRE III objectives, model simulations and data analysis will aim at the improvement of existing parameterizations of cloud and radiative processes in LES and large scale models.

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