Numerical Modelling of the Evolution of Monsoon Circulation Along 80 degrees E.
Abstract
The UCLA general circulation model developed by Arakawa and Mintz was used to study the evolution of the northern summer monsoon during a 180 day period commencing in mid January. The global model, modified to a five degree latitude by five degree longitude grid resolution, was run for five vertical levels in a zonally symmetric mode along 80 deg E to permit the extended computational period. Thermal forcing was simulated by continuously adjusting computed temperatures at each level toward the radiative equilibrium temperature for that level as estimated by Palmen and Newton. These equilibrium temperatures were also adjusted during the 180 day period from the January mean to the July mean. The evolution and location of the major zonal components of the monsoon were reasonably simulated. The results indicate that a zonally symmetric model is suitable for studies on the planetary-scale features of the monsoon with the realization that exclusion of zonally-asymmetric phenomena from such a model limits its accuracy and usefulness in considering the effects of such events on the monsoon system.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1977
- Accession Number
- ADA039782
Entities
People
- George William Schwenke
Organizations
- Naval Postgraduate School