Space based observations: A state of the art solution for spatial monitoring tropical forested watershed productivity at regional scale in developing countries

8th International Symposium of the Digital Earth

地球科学;计算机科学

Mahmud, M.R.^1

Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University, 1-1 Minami Osawa, 192-0397 Hachioji-shi, Tokyo, Japan^1

关键词: Forested watersheds;    Rainfall variable;    Remote sensing data;    Satellite measurements;    Satellite rainfalls;    Space-based observations;    Standard deviation;    Water balance models;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/18/1/012191/pdf
DOI  :  10.1088/1755-1315/18/1/012191

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

This paper presents the simplified and operational approach of mapping the water yield in tropical watershed using space-based multi sensor remote sensing data. Two main critical hydrological rainfall variables namely rainfall and evapotranspiration are being estimated by satellite measurement and reinforce the famous Thornthwaite & Mather water balance model. The satellite rainfall and ET estimates were able to represent the actual value on the ground with accuracy under considerable conditions. The satellite derived water yield had good agreement and relation with actual streamflow. A high bias measurement may result due to; i) influence of satellite rainfall estimates during heavy storm, and ii) large uncertainties and standard deviation of MODIS temperature data product. The output of this study managed to improve the regional scale of hydrology assessment in Peninsular Malaysia.