| タイトル | On the uncertainty in the determination of ground reflectance and temperature from TM measurements |
| 著者（英） | Kiang, R. K. |
| 著者所属（英） | NASA Goddard Inst. for Space Studies |
| 発行日 | 1981-01-01 |
| 言語 | eng |
| 内容記述 | Uncertainties in the derivation of the ground reflectance and temperature relative to the uncertainty in the estimation of aerosol loading and water vapor amount are presented. To compute the reflectance for TM 1 (thematic mapper) through TM6, a doubling model is used, and to compute satellite-received radiance for TM7, an emission-transmission model is employed. It is shown that at a water vapor concentration of higher than 50% above normal, the relative sensitivity remains as low as 8% for ground reflectance determinations. The relative sensitivity for determining ground temperature for midlatitude summer climatological profile is less than 5%, but as the ground temperature is approximately 300 K, low sensitivity still means a variation of a few degrees. An increase in water vapor amount causes an uncertainty in ground temperature and reflectance calculations comparable to the uncertainty in aerosol loading and water vapor amount estimations. |
| NASA分類 | EARTH RESOURCES AND REMOTE SENSING |
| レポートNO | 82A43448 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/409149 |
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