Abstract
The objectives of this work are: 1) to monitor the trend of rainfall data in in-season rice field period of Thailand (April to August). 2) to analyze meteorological drought by Standardized Precipitation Index : SPI in Northeast Thailand in in-season rice field period of Thailand and 3) to predict the rainfall data in in-season rice field period of Thailand of 2021. The average monthly rainfall data in April to August of 1990 – 2020 were gathered from 31 meteorological stations covered Northeast area of Thailand by Meteorological Department of Thailand. The data were used to draw trend of monthly average rainfall to track a change of rainfall in the period. Then, these were used to create distribution of meteorological drought characteristics maps under SPI criteria. Moreover, Single Moving Average model is used to predict the rainfall data with the lowest MAPE at 11.13 percentage. The results show that the higher meteorological drought risk area was always found in south-west side of the region in June to August. Moreover, average monthly rainfall increases from April and hit the peak in July and August. The trend of total monthly rainfall in in-season rice field period fluctuates along the study period with average value at 977.98 millimeters and its trend tends to be decreased at 0.1052 millimeters per year.
Highlights
Drought is one of major natural problem which many areas in Thailand must face in many years
Northeast Thailand faces with this problem every year because of the location of the area which is located far from ocean humidity is hardly pass through the area to form rain
The rainfall trends of each month were created by excel program to monitor the rainfall change of April to August in the study area
Summary
Drought is one of major natural problem which many areas in Thailand must face in many years. Northeast Thailand faces with this problem every year because of the location of the area which is located far from ocean humidity is hardly pass through the area to form rain. This area only gains rainfall from 2 -3 tropical cyclone which are transported to the area. This area is covered by sandstone and Sandy soil it is hard to storage the water for using in all activities. From this composition lead this region to face with drought [1]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
