Estimation of surface temperature variations due to changes in sky and solar flux with elevation
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Abstract
Sky and solar radiance are of major importance in determining the ground temperature. Knowledge of their behavior is a fundamental part of surface temperature models. These two fluxes vary with elevation and this variation produces temperature changes. Therefore, when using thermal-property differences to discriminate geologic materials, these flux variations with elevation need to be considered. From a representative set of field observations, it was found that flux variations with elevation can cause changes in the mean diurnal temperature gradient from −4° to −14°C per km evaluated at 2000 m. Changes in the temperature-difference gradient of 1°-2°C per km are also produced which is equivalent to an effective thermal-inertia gradient of 100 W s1/2 m−2 K−1 per km. Thus, exposed bedrock on topographic ridges will appear to have a lower thermal inertia due to the additional effect.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Estimation of surface temperature variations due to changes in sky and solar flux with elevation |
| Series title | Geophysical Research Letters |
| DOI | 10.1029/GL008i006p00595 |
| Volume | 8 |
| Issue | 6 |
| Year Published | 1981 |
| Language | English |
| Publisher | American Geophysical Union |
| Description | 4 p. |
| First page | 595 |
| Last page | 598 |
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