Accession Number:

ADA142200

Title:

A Three-Dimensional Dynamical-Chemical Model of the Mesosphere and Lower Thermosphere for Upper Atmospheric Research.

Descriptive Note:

Final technical rept. 18 May 81-30 Sep 83,

Corporate Author:

GEORGIA INST OF TECH ATLANTA SCHOOL OF GEOPHYSICAL SCIENCES

Personal Author(s):

Report Date:

1984-01-20

Pagination or Media Count:

82.0

Abstract:

The recent appearance of new observational data from specialized satellites and rocket probes has led to increased interest in upper atmospheric processes. The work to be reported herein is of the current status of a limited three-dimensional model of the dynamical and important chemical processes which are known to take place in the mesosphere and lower thermosphere to an altitude of about 400 km above the earths surface. The modeling approach taken was to make use of the dynamical schemes and simplified chemical treatments embodied in our three-dimensional Stratospheric Circulation Model SCM developed for the study of stratospheric ozone. This model has been running on the now defunct ILLIAC-4 vector computer at NASAs Ames Research Center in California. In addition to large changes required in the existing dynamics and chemistry to reform the model for thermospheric and mesospheric levels, it was also necessary to revise the code structure to accommodate the shift from the ILLIAC machine to the AFGL CDC-660 computer. Much of this work was accomplished on the NASA machines prior to the availability, through special modems and telephone connections, of the AFGL CDC-6600. Since that time the programs have been transferred to AFGL and, while not completed, tests of the model dynamics on that machine have been undertaken.

Subject Categories:

  • Atmospheric Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE