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Abstract:
This study investigated the response of surface temperature to cloud shadows. A quantitative model applicable to IR backgrounds was developed. Time- dependent heat flow and energy budget equations have been solved to determine the diurnal variation in surface ground temperatures for a dry, sandy soil with a simple vegetation layer under various cloud conditions. Ground temperatures were determined to vary up to 2K in the first minute following cloud shadowing of solar illumination; stable soil temperatures were not reached after over an hour of shade. These results indicate the importance of including cloud shadow ing in the SWOE background model.
| Limitations: |
 APPROVED FOR PUBLIC RELEASE |
| Description: |
Scientific rept. no. 3, Oct 89-Dec 90 |
| Pages: |
33 |
| Report Date: |
20 FEB 91 |
| Contract Number: |
F19628-89-C-0128 |
| Report Number: |
A480242 |
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