On the Vertical Distribution of Local and Remote Sources of Water for Precipitation ebook

On the Vertical Distribution of Local and Remote Sources of Water for Precipitation. Michael G Bosilovich

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Author: Michael G Bosilovich
Number of Pages: 36 pages
Published Date: 07 Aug 2013
Publisher: Bibliogov
Publication Country: United States
Language: English
Format: eBook
ISBN: 9781289289249
File size: 35 Mb
Download Link: On the Vertical Distribution of Local and Remote Sources of Water for Precipitation
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The vertical distribution of local and remote sources of water for precipitation and total column water over the United States are evaluated in a general circulation model simulation. The Goddard Earth Observing System (GEOS) general circulation model (GCM) includes passive constituent tracers to determine the geographical sources of the water in the column. Results show that the local percentage of precipitable water and local percentage of precipitation can be very different. The transport of water vapor from remote oceanic sources at mid and upper levels is important to the total water in the column over the central United States, while the access of locally evaporated water in convective precipitation processes is important to the local precipitation ratio. This result resembles the conceptual formulation of the convective parameterization. However, the formulations of simple models of precipitation recycling include the assumption that the ratio of the local water in the column is equal to the ratio of the local precipitation. The present results demonstrate the uncertainty in that assumption, as locally evaporated water is more concentrated near the surface.

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