A modification of climate data to the seasonal factor (Zhang constant) of Thailand
By Thammanoon Temchai and Swangpong Wanmanee
National Parks Research Center (Petchburi), National Parks Office, Department of National Parks, Wildlife and Plant Conservation
ABSTRACT : This study aims to evaluate climate data to seasonal factor (Z-Constant) in various areas of Thailand by finding the relationship between rainfall data of Fick and Hijmans (2017) and seasonal factor (Zhang constant) which applied from the equation of Donohue et al. (2012) with rainfall data from Air Quality Monitoring Stations. The study found that the area of Thailand has seasonal factors between 1.8 – 12.5, which can create seasonal constant maps in different regions and in conservation areas in Thailand for further utilization.
Keywords: Seasonal Factor, Zhang - constant, InVEST model, Water yield