Infra-red heating calculations with a water vapour pressure broadened continuum
✍ Scribed by S. K. Cox
- Publisher
- John Wiley and Sons
- Year
- 1973
- Tongue
- English
- Weight
- 616 KB
- Volume
- 99
- Category
- Article
- ISSN
- 0035-9009
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✦ Synopsis
Abstract
Previous heat budget studies relying on infra‐red radiation calculations have not used a water vapour pressure dependent continuum absorption in the 830‐1,250 cm^−1^ region of the infra‐red spectrum. The purpose of this study was to investigate the differences in the infra‐red divergence profiles caused by inclusion of the vapour pressure dependent continuum absorption.
The results indicate only a very small change in infra‐red divergence from previous work for a typical midlatitude temperature, water vapour profile. However, for tropical temperature and moisture profiles, the new continuum data result in approximately 30 per cent more total tropospheric infra‐red cooling than obtained using earlier continuum absorption data. In addition, it is shown that within a realistic range of tropical atmosphere moisture content, the continuum infra‐red cooling may act to either stabilize or destabilize the lower layers of the troposphere.