Assessment of the Standardized Precipitation Index (SPI) in Tegal City, Central Java, Indonesia

International Conference on Climate Change: Challenges and Opportunity on Environment Degradation Researches

地球科学;生态环境科学

Pramudya, Y.^1 ; Onishi, T.^2

Graduate School of Natural Science and Technology, Gifu University, 1-1 Yanagido, Gifu, Gifu Prefecture

501-1193, Japan^1

Department of Applied Biological Science, Gifu University, 1-1 Yanagido, Gifu, Gifu Prefecture

501-1193, Japan^2

关键词: Drought conditions;    Drought indices;    Indonesia;    Mitigation methods;    Multiple timescales;    Quantitative evaluation;    Specific areas;    Standardized precipitation index;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/129/1/012019/pdf
DOI  :  10.1088/1755-1315/129/1/012019

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

One of the adverse impacts of climate change is drought, which occurs more frequently in Tegal city, Indonesia. The application of drought index analysis is useful for drought assessment to consider adaptation and mitigation method in order to deal with climate change. By figuring out the level and duration of the drought. In order to analyze drought in the specific area, Standardized Precipitation Index (SPI) is an index to quantify the rainfall deficit for multiple timescales. In 2015, Indonesia experienced severe drought, which has not been analyzed, yet. Thus, it is important to assess a quantitative evaluation of the drought condition. The study shows that from all deficit periods, the most severe drought in duration and peak took place in 2015, with each drought index as follows: 1 month deficit or SPI-1 (-3.11) in 1985 (-2.51) in 2015, 3 month deficit or SPI-3 (-2.291) in 1995 (-1.82) in 2015, 6 month deficit or SPI-6 (-2.40) in 1997 and (-1.84) in 2015, 9 month deficit or SPI-9 (-1.12) in 2015, 12 month deficit or SPI-12 (-1.19) in 2015. The result underlines the potential that SPI exhibits in drought identification and the use of the rainfall strongly linked to drought relief policy and measure implementation in Tegal city.