Satellite indicators in drought monitoring in Iran
Subject Areas : Natural resource management
seyed mahdi
PAZHUHAN
1
(Department of Geography, Payame Noor University, Tehran, Iran)
Keywords: : infrared band, red band, satellite drought, Iran,
Abstract :
ought is a natural manifestation influenced by climatic conditions and is considered one of Iran's significant morphoclimatic phenomena. The appearance of this phenomenon is linked to variations in climatic elements such as temperature and precipitation. Drought, as a destructive climatic event, can have adverse effects on the ecology of any region if not properly managed, with its economic losses being a crucial feedback. Effective monitoring of drought is essential for its management. In this research, the most practical indicators for satellite monitoring of drought have been defined and implemented using meteorological satellite images. This method proves to be more economical and time-efficient compared to traditional methods, including field monitoring. The analysis of satellite indicators revealed that, firstly, the electromagnetic spectrum ranges of 670 nm (red band) and 765 nm (infrared band) are commonly utilized in all plant indicators. Secondly, the output map generated from these indicators demonstrates their high efficacy in revealing vegetation changes and, consequently, monitoring drought.
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