Analyzing Wetness and Dryness Severity in Bangladesh: Using Standardized Precipitation Index (SPI) in GIS Environment

Authors

  • NMR Nasher Department of Geography and Environment, Jagannath University, Dhaka
  • MN Uddin Department of Environmental Sciences and Resources Management, Mawlana Bashani Science and Technology University, Tangail-1902

DOI:

https://doi.org/10.3329/jesnr.v7i2.22220

Keywords:

Dryness, GIS, Standardized Precipitation Index, Spatial analysis, Wetness

Abstract

Daily precipitation data of 33 stations were analyzed to know the Standardized Precipitation Index (SPI). Both spatial and temporal SPI were analyzed. Inverse Distance Weighting (IDW) technique was used to map the spatial SPI with a decadal change. From 1983 to 2013, four maps showed the decadal changes of SPI over Bangladesh. 1993 was a dry year in the regarding time period. Station based trends were analyzed for Dhaka, Srimongol, Khulna, Coxs bazaar and Rangpur as preventative for five regions in Bangladesh. Dryness is increasing over Northern and Central regions whereas wetness is increasing over Southwestern, Northern and eastern region in Bangladesh.

DOI: http://dx.doi.org/10.3329/jesnr.v7i2.22220

Environ. Sci. & Natural Resources, 7(2): 127-131 2014

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Published

2015-02-14

How to Cite

Nasher, N., & Uddin, M. (2015). Analyzing Wetness and Dryness Severity in Bangladesh: Using Standardized Precipitation Index (SPI) in GIS Environment. Journal of Environmental Science and Natural Resources, 7(2), 127–131. https://doi.org/10.3329/jesnr.v7i2.22220

Issue

Vol. 7 No. 2 (2014)

Section

Articles