Journal ArticleDOI
Liquid and Ice Cloud Microphysics in the CSU General Circulation Model. Part 1: Model Description and Simulated Microphysical Processes
TLDR
In this article, microphysical processes responsible for the formation and dissipation of water and ice clouds have been incorporated into the Colorado State University General Circulation Model in order to yield a more physically based representation of the components of the atmospheric moisture budget.Abstract:
Microphysical processes responsible for the formation and dissipation of water and ice clouds have been incorporated into the Colorado State University General Circulation Model in order to 1) yield a more physically based representation of the components of the atmospheric moisture budget, 2) link the distribution and optical properties of the model-generated clouds to the predicted cloud water and ice amounts, and 3) produce more realistic simulations of cloudiness and the earth's radiation budget. The bulk cloud microphysics scheme encompasses five prognostic variables for the mass of water vapor, cloud water, cloud ice, rain, and snow. Graupel and hail are neglected. Cloud water and cloud ice are predicted to form through large-scale condensation and deposition processes and also through detrainment at the tops of cumulus towers. The production of rain and snow occur through autoconversion of cloud water and cloud ice. Rain drops falling through clouds can grow by collecting cloud water, and ...read more
Citations
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Journal ArticleDOI
Global indirect aerosol effects: a review
Ulrike Lohmann,Johann Feichter +1 more
TL;DR: In this article, the effects of aerosols on the climate system are discussed and different approaches how the climatic implications of these effects can be estimated globally as well as improvements that are needed in global climate models in order to better represent indirect aerosol effects are discussed.
Journal ArticleDOI
A Revised Approach to Ice Microphysical Processes for the Bulk Parameterization of Clouds and Precipitation
TL;DR: In this paper, a revised approach to cloud microphysical processes in a commonly used bulk microphysics parameterization and the importance of correctly representing properties of cloud ice are discussed, and the impact of sedimentation of ice crystals is also investigated.
Journal ArticleDOI
The CloudSat mission and the A-train: a new dimension of space-based observations of clouds and precipitation
Graeme L. Stephens,Deborah G. Vane,Ronald J. Boain,Gerald G. Mace,Kenneth Sassen,Zhien Wang,Anthony J. Illingworth,Ewan O'Connor,William B. Rossow,Stephen L. Durden,Steven D. Miller,Richard T. Austin,Angela Benedetti,Cristian Mitrescu +13 more
TL;DR: CloudSat as discussed by the authors is a satellite experiment designed to measure the vertical structure of clouds from space, and once launched, CloudSat will orbit in formation as part of a constellation of satellites (the A-Train) that includes NASA's Aqua and Aura satellites, a NASA-CNES lidar satellite (CALIPSO), and a CNES satellite carrying a polarimeter (PARASOL).
Journal ArticleDOI
Estimates of the direct and indirect radiative forcing due to tropospheric aerosols: A review
Jim Haywood,Olivier Boucher +1 more
TL;DR: A review of the many developments in estimates of the direct and indirect global annual mean radiative forcing due to present-day concentra- tions of anthropogenic tropospheric aerosols since the Inter- governmental Panel on Climate Change (1996) is presented in this paper.
Journal ArticleDOI
Radiative forcing of climate change
TL;DR: The authors reviewed the current understanding of mechanisms that are, or may be, acting to cause climate change over the past century, with an emphasis on those due to human activity, and discussed the general level of confidence in these estimates and areas of remaining uncertainty.
References
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Journal ArticleDOI
Interaction of a Cumulus Cloud Ensemble with the Large-Scale Environment, Part I
Akio Arakawa,Wayne H. Schubert +1 more
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