Techniques to Compute Antecedent Moisture and Correlation of Effectiveness of Various Methods: A Review

Abstract

The Hydrological cycle includes the continuous circulation of water in the earth’s atmosphere. Water is an irreplaceable resource, and there is no substitute. Although it is generally considered typical, water is the most well-known substance. Because of its obvious importance, water is the best-studied material on earth. In this paper, a review precisely has been done about calculating the initial humidity condition, which occurs due to the essential step of the water cycle, i.e., runoff. Antecedent moisture conditions change continuously and can significantly affect the flow responses during wet weather. This paper provides details of the two best-known methods, SCS_CN and MS model, to derive the antecedent moisture equation using different parameters. The various performance criteria methods (RMSE, nRMSE, Standard error, Nash and Sutcliffe’s efficiency) have been described in this manuscript, along with their applications and comparison in terms of calculating the antecedent moisture efficiency.