tailieunhanh - Báo cáo " Impact of climate change on water resources in Ca River basin "

. Base on Climate Change Scenarios (A2, B2, B1), simulation outputs of river flow show the changes of water resources in Ca River. These results are arguments for water resources planning in Ca River under the climate change situations. Keywords: climate change, water resources, Ca River. 1. Introduction∗ Climate change (CC) is a major concern of society in general and Vietnam in particular. Due to impacts of climate change, water resources in river is changed in quantity, quality, regime . Within the framework of the paper, the impact of climate change on flow characteristics on Ca river basin is reviewed | VNU Journal of Science Earth Sciences 26 2010 224-231 Impact of climate change on water resources in Ca River basin Hoang Minh Tuyen Vietnam Institute of Meteorology Hydrology and Environment 23 62 Nguyen Chi Thanh Hanoi Vietnam Received 8 December 2010 received in revised form 22 December 2010 Abstract. Base on Climate Change Scenarios A2 B2 B1 simulation outputs of river flow show the changes of water resources in Ca River. These results are arguments for water resources planning in Ca River under the climate change situations. Keywords climate change water resources Ca River. 1. Introduction Climate change CC is a major concern of society in general and Vietnam in particular. Due to impacts of climate change water resources in river is changed in quantity quality regime . Within the framework of the paper the impact of climate change on flow characteristics on Ca river basin is reviewed. Ca river which is largest river system in North Central is the most important source of surface water for Nghe An and Ha Tinh provinces. Total area of Ca river basin is about km2 in which there are 9470 km2 in the upper 34 Laos 17 730 km2 in the middle and lower in most of the territory of two provinces of Nghe An - Ha Tinh and a part of the Nhu Xuan district of Thanh Hoa province. Total annual flow of the river system is about km3 Both of which flows into Laos from km3 and was formed in Vietnam km3 up 1 . Tel. 84-4-38357106 E-mail hmtuyen@vkttv. edu. vn 2. Climate change scenarios in Ca River basin Greenhouse gas emissions scenarios which were selected to develop climate change scenarios are low emission scenario B1 scenario average emission scenario scenario B2 and high emission scenarios scenario A2 . Base period baseline is 20 years from 19801999 2 . . Temperature In Ca river basin by the end of the 21st century annual mean temperature would increase about to 2 20C in B1 scenario about to in B2 scenario and about to

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