(ANN). The supervised learning technique, Bayesian regularization back propagation was used to training the ANN. The predictors from RegCM4 output comprises 5 climate variables including precipitation, atmospheric pressure, maximum, minimum and mean temperature at the ground surface. The predictands are four meteorological variables including precipitation, maximum, minimum and mean temperature from the observation stations of Thai Meteorological Department. The daily predictors from 70 grids over the Phetchburi and Prachuab Khiri Khan river basins were trained with each daily predictand from each station. Predictands from 12 meteorological stations were applied for the training processes. The output from the ANN are then gridded onto the 5 km x 5 km domain using an inverse distance approach. The downscaled products cover two periods- a base line period, 1970-2005 and a future pro-jeciton period, 2006-2040. The Integrated Water Resource Management Framework The climate change impacts on watershed management are evaluated by using the Water Evaluation and Planning model (WEAP). The WEAP-Phetchaburi model has been configured to represent the Phetchaburi and Prachuab Khiri Khan provinces in Thailand, including their primary river systems. The model includes as inputs, daily climate data (i.e. air temperature, precipitation, wind speed and humidity); soil type and land use characteristics, reservoirs, diversions, and water demands. Several different datasets have been used to configure the model, including geographical information system (GIS) digital data, which includes river networks, canal networks, reservoir locations, land use, soil type, watershed boundaries, digital elevations, and groundwater well locations. The entire region have been represented in the model however, Fig.3 Schematic of the WEAP-Phetchaburi model, with the inset figure, a zoom over the eastern region of the study domain, highlighting the refined detail of the model and the location of the Sirindhorn International Environmental Park and the Phetchaburi water transmission project Proceedings of the International Conference on Climate Change, Biodiversity and Ecosystem Services for the 243 Sustainable Development Goals (SDGs): Policy and Practice 27-29 June 2016, Cha-am, Phetchaburi, Thailand Spatial Domain and characteristics. Model covers the Phetchaburi and Prachuapkhrii Regions, and includes the 31 largest rivers, 17 reservoirs, 11 municipal demands, and 50 sub-basins, of which 20 include irrigation (field crop, perennial, aquaculture, paddy field). The major canals that deliver water to the eastern coast are included.
Proceedings of International Conference on Climate Change, Biodiversity and Ecosystem Services for the Sustainable Development Goals : Policy and Practice 27-29 June 2016 at the Sirindhorn International Environmental Park, Cha-am, Phetchaburi, Thailand
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