The Parameterization of Cloud Cover

Breaking the Cloud Parameterization Deadlock

NOVEMBER 2003 AMERICAN METEOROLOGICAL SOCIETY | C LOUDS AND CLIMATE: A PROBLEM THAT REFUSES TO DIE. Clouds of many varieties fill the global atmosphere (Fig. 1). They are composed of drops and crystals with scales on the order of microns to millimeters. They are associated with convection and turbulence on scales of meters to kilometers. They are organized within mesoscale and synoptic-scale dy...

Vertex Cover Structural Parameterization Revisited

A pseudoforest is a graph whose connected components have at most one cycle. Let X be a pseudoforest modulator of graph G, i. e. a vertex subset of G such that G−X is a pseudoforest. We show that Vertex Cover admits a polynomial kernel being parameterized by the size of the pseudoforest modulator. In other words, we provide a polynomial time algorithm that for an input graph G and integer k, ou...

Spatiotemporal Variations of Total Cloud Cover and Cloud Optical Thickness in Iran

A knowledge of cloud properties and spatiotemporal variations of clouds is especially crucial to understand the radiative forcing of climate. This research aims to study cloudiness in Iran using the most recent satellite data, powerful databases, and regional and seasonal analyses. In this study, three data series were used for the spatiotemporal variations of cloudiness in the country: A) Clou...

New cloud microphysical model and parameterization

Development of a cloud microphysical model and parameterizations to describe the effect of CCN on warm cloud N. Kuba and Y. Fujiyoshi Frontier Research Center for Global Change (FRCGC), Japan Agency for Marin-Earth Science and Technology (JAMSTEC), Yokohama, Japan Frontier Research Center for Global Change (FRCGC), Japan Agency for Marin-Earth Science and Technology (JAMSTEC)/Inst. Low. Temp. S...

1 the Rams Cloud Microphysics Parameterization in Wrf : Current Status