The NOAA IR serves as an archival repository of NOAA-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by NOAA or funded partners.
As a repository, the NOAA IR retains documents in their original published format to ensure public access to scientific information.
i
Prediction of a break in monsoon conditions over India using a nested grid hemispheric model
-
1978
[PDF-712.51 KB]
Details:
-
Personal Author:
-
Corporate Authors:
-
NOAA Program & Office:
-
Description:A two-way interacting nested-grid hemispheric model is used to study the interaction between a mid-latitude wave in westerlies and monsoonal circulation over India and to investigate the development of Break in Monsoon conditions. The horizontal coordinates are those of a polar stereographic projection. The vertical coordinate is a and the vertical layer structure is similar to the energy conserving structure derived by Arakawa. 'Elliassen' horizontal staggered grid and Lax-Wendroff time-difference schemes are used. This model is being developed and presently incorporates some physical processes including convective and nonconvective release of latent heat, surface friction and turbulent diffusion. The initial state is derived from the NMC Global Hough Analysis (1970) on 00 GMT 22 July 1975. Truncation errors in the sigma coordinate expression for the horizontal pressure force are large over the steep slopes. However, a 48-hr prediction from the dry version of the model (release of latent heat not included) shows that the model forecasts reasonably well the eastward movement of a midlatitude wave across northern India and the Himalayas and the development of an anticyclonic flow over central India: features known to occur with the development of break in monsoon conditions. A 24-hr prediction with the inclusion of convective and nonconvective release of latent heat predicts major areas of precipitation over northern India located close to the areas of large observed precipitation.
-
Content Notes:Mukut B. Mathurt, Norman A. Phllips, Kenneth A. Campana.
"September 1978."
"This is an unreviewed manuscript, primarily intended for informal exchange of information among NMC staff members."
System requirements: Adobe Acrobat Reader.
Includes bibliographical references (page 11).
-
Keywords:
-
Series:
-
Document Type:
-
Place as Subject:
-
Rights Information:Public Domain
-
Compliance:Library
-
Main Document Checksum:
-
Download URL:
-
File Type:
