Downscaling for climate change impact study

The idea of statistical downscaling is to translate the information we get from the Global Climate Models (GCM) to local and regional scale. The data we get from GCM provided data is very large, approximately 100-300km in size. This data is not going to be useful to planners that works on a more loc...

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Main Author: Ng, Marcus Tian Leong
Other Authors: Qin Xiaosheng
Format: Final Year Project (FYP)
Language:English
Published: 2019
Subjects:
Online Access:http://hdl.handle.net/10356/77935
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author Ng, Marcus Tian Leong
author2 Qin Xiaosheng
author_facet Qin Xiaosheng
Ng, Marcus Tian Leong
author_sort Ng, Marcus Tian Leong
collection NTU
description The idea of statistical downscaling is to translate the information we get from the Global Climate Models (GCM) to local and regional scale. The data we get from GCM provided data is very large, approximately 100-300km in size. This data is not going to be useful to planners that works on a more local scale. Using statistical downscaling model (SDSM), we can get the needed data. Most SDSM begin with comparing GCM output in the past with particular observation during the same period. By comparing modelled projection and actual climate observation, researchers can see the relationship between global and regional climate patterns, therefore describe this pattern using statistics. The next step to this statistic is to apply this statistical relation to future climate projection. Assuming that the statistical relationship observed in the past will continue to hold in the future. In this project, SDSM software was used to perform statistical downscaling of precipitation data for Bangladesh, Gobi Desert and Singapore. Using NCEP and GCM daily predictor variables, 4 different types of graph consisting of mean rainfall, maximum rainfall, variance and wet days percentage were generated and compared it to the observed data of each region.
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spelling ntu-10356/779352023-03-03T17:13:27Z Downscaling for climate change impact study Ng, Marcus Tian Leong Qin Xiaosheng School of Civil and Environmental Engineering DRNTU::Engineering::Civil engineering The idea of statistical downscaling is to translate the information we get from the Global Climate Models (GCM) to local and regional scale. The data we get from GCM provided data is very large, approximately 100-300km in size. This data is not going to be useful to planners that works on a more local scale. Using statistical downscaling model (SDSM), we can get the needed data. Most SDSM begin with comparing GCM output in the past with particular observation during the same period. By comparing modelled projection and actual climate observation, researchers can see the relationship between global and regional climate patterns, therefore describe this pattern using statistics. The next step to this statistic is to apply this statistical relation to future climate projection. Assuming that the statistical relationship observed in the past will continue to hold in the future. In this project, SDSM software was used to perform statistical downscaling of precipitation data for Bangladesh, Gobi Desert and Singapore. Using NCEP and GCM daily predictor variables, 4 different types of graph consisting of mean rainfall, maximum rainfall, variance and wet days percentage were generated and compared it to the observed data of each region. Bachelor of Engineering (Civil) 2019-06-10T03:04:25Z 2019-06-10T03:04:25Z 2019 Final Year Project (FYP) http://hdl.handle.net/10356/77935 en Nanyang Technological University 37 p. application/pdf
spellingShingle DRNTU::Engineering::Civil engineering
Ng, Marcus Tian Leong
Downscaling for climate change impact study
title Downscaling for climate change impact study
title_full Downscaling for climate change impact study
title_fullStr Downscaling for climate change impact study
title_full_unstemmed Downscaling for climate change impact study
title_short Downscaling for climate change impact study
title_sort downscaling for climate change impact study
topic DRNTU::Engineering::Civil engineering
url http://hdl.handle.net/10356/77935
work_keys_str_mv AT ngmarcustianleong downscalingforclimatechangeimpactstudy