03720nas a2200265 a 450000500170000000800410001703500150005810000220007324500960009526000570019130000240024849000270027250001410029950200590044052025380049965000300303765000240306770000380309170000450312970000430317471000720321771000400328981000590332985600660338820260817162317.0160321s2013    th u  m rtt   0   a eng d  a.b121627590 aNguyen Minh Vuong10aAnalysis of climate change impact on rainwater harvesting in South Central coast of Vietnam  aPathum Thani :bAsian Institute of Technology,c2013  a 52 leaves :bill. 1 aThesis ;vno. WM-13-20  aA thesissubmitted in partial fulfillment of the requirements for the degree of Master of Engineering in Water Engineering and Management  aThesis (M. Eng.) - Asian Institute of Technology, 2013  aThe  increase  of  population  and  climate  change  has  placed  additional  burden  on  water supply   systems   which   is   already   under   stress.   Under   that   circumstance,   rainwater harvesting,  a  sustainable  water  source,  is  increasingly  drawn  attention  as  vitalsources inprovision  of  water.  Effects  of  climate  change  on  hydrological  cycle  and  precipitation distribution will ultimately impact on performance of the system, which must be taken into account for necessary adaptation measuresin design and applications.Firstly,  two  non-parametric  test  namely  Mann-Kendall and Sen{u2019}s slope were applied for investigation  on historical  trend  of  temperature  and  precipitation. The  study  showed significant increasing trend of max and minimum temperature is recorded over all stations with  approximately  rate  of  0.3  degree  per  decade. Although  trend  of  precipitation  is  not significant  throughout  the  region, two  among  nine  studied  stations  show  significant increasing trend, by contrast there is one station with significant decreasing trend. Secondly, through employment of bias correction techniques on PRECIS Regional Climate Model, it is expected that there is a2-5%increase of total annual rainfall during the period of  2021-2040  &  2041-2060  compared  to  those  of  the  observation.  A  decrease  on  average annual number of strong and heavy day is presented. However, there is significant increase on maximum  dry  spell  from  30-45  days  average,  which  equivalents  to  an  increase  of  50-100%of maximum dry durationofthe observation period. Performance  of  rainwater  harvesting  is  simulated using behavior  model underthree different   climatic   conditions.   Development   of   demand-storage-reliability   relationshipreveals  that  100%  annual  reliability  can  be  achieved  in  humid  climate cities.  Analysis  on future performance of rainwater harvesting shows a reduction of 5-8 % of annual reliability of  the  system,  which  should  be  considered  in  planning  of  future  rainwater  harvesting. Analysis  on change of tank  storageand/orroof  area  so  as  to  maintain  the  system{u2019}s reliability  over  time  was  conducted.  The  result  showedthat  an  increase  of  10%  roofarea will not  only considerably reduce  the  necessary  adjustment  of  tank  storage  compared  to those  of  changing  tank  or  roof  area  only,  but  also  reduce  from  15-60%  of  storage requirement to the observation period.  0aClimatic changeszVietnam 0aRainwaterzVietnam 1 aBabel, Mukand Singh,eChairperson1 aShrestha, Sangam,eExamination Committee0 aSutat Weesakul,eExamination committee2 aDeutscher Akademischer Austausch Dienst (DAAD), eScholarship donor2 aAIT Fellowship, eScholarship donor2 aAsian Institute of Technology.tThesis ;vno. WM-13-20  3Full-Textuhttp://203.159.5.9/ait-thesis/detail.php?q=B04374