02517nas a2200265 a 450000500170000000800410001703500150005810000570007324501150013026000670024530000230031249000270033550001400036250200590050252012640056165000480182570000380187370000480191170000470195970000430200671000370204971000400208681000590212685600660218520260817162331.0160330s2014    th uu|m rtt   0|  a1eng d  a.b121571071 aThilakarathne, Bandara Mudiyanselage Madusanka Nuwan10aAnalysis of dry and wet spells under climate change scenarios :ba case of the Upper Mun River Basin, Thailand  aPathum Thani, Thailand :bAsian Institute of Technology,c2014  a71 leaves :bill. 1 aThesis ;vno. WM-14-09  aA thesis submitted in partial fulfillment of the requirements for thedegree of Master of Engineering inWater Engineering and Management  aThesis (M. Eng.) - Asian Institute of Technology, 2014  aThe study aims to analyze the dry and wet spells using Standard Precipitation Index (SPI) with climate change in the future. The dry/wet spells were recognized by selecting truncation levels for dry spells and wet spells respectively. The characteristics of dry/wet spells were examined  by  theory  of  runs  as  magnitude  and  duration. The  appropriate  timescale  for identification  of  dry  and  wet  spells  was  selected  by  examining  SPI  series  for  historical records.  Further  study  was  conducted  using  the  selected  time  as  three  months  for  the  SPI calculation. The  most  appropriate  distribution  model  for  each  characteristic  was  chosen using Akaike  Information Criterion (AIC) and Bayesian  InformationCriterion (BIC). The return  period  analysis  is  conducted  for  each  characteristics  of  dry/wet  spells. The futureprecipitation datawasacquiredusing six Global Climate Models (GCMs). Quantile mapping withempirical  quantiles  was  used  in  thebias  correction  of  the  precipitation data of  six climate  models.  The  analysis  revealed  that  there  is  a  tendency  of  reducing  dry  spell magnitude and duration in the future. The increase of wet spell magnitude in far future was shown in the results.  0aClimatic changezMun River Basin (Thailand)1 aBabel, Mukand Singh,eChairperson1 aJourdain, Damien, eExamination committee  1 aKawasaki, Akiyuki, eExamination committee0 aSutat Weesakul,eExamination committee2 aWEM Project, eScholarship donor2 aAIT Fellowship, eScholarship donor2 aAsian Institute of Technology.tThesis ;vno. WM-14-09  3Full-Textuhttp://203.159.5.9/ait-thesis/detail.php?q=B04388