A STUDY OF REMOTE SENSING AS APPLIED TO REGIONAL AND SMALL WATERSHEDS VOLUME I:SUMMARY REPORT

摘要

The objective of the study was to determine how accurate remotely sensed measurements must be to provide inputs to hydrologic models of watersheds, within the tolerances needed for acceptably accurate synthesis of streamflow by the models.nThe stuáy objective was achieved by performing a series of sensi¬tivity analyses, using continuous simulation models of three watersheds, to determine:nthe optimal values and permissible tolerances of inputs to the model needed to achieve an acceptably accurate simulation of streamflow from the watersheds;na which model inputs can be quantified from remote sensing, directly, indirectly or by inference;and how accurate remotely sertssd measurements (from spacecraft or aircraft) must be to provide a basis for quantifying model inputs within permissible tolerances.