Runoff Response of Zamu River Basin to IPCC Climate Change Scenarios in Northwest China

2013 ◽  
pp. 223-231
Author(s):  
Sufen Wang ◽  
Xin Liu
Keyword(s):  
Climate Change ◽  
River Basin ◽  
Northwest China ◽  
Climate Change Scenarios

scholarly journals Evaluation of water productivity under climate change in irrigated areas of the arid Northwest China using an assemble statistical downscaling method and an agro-hydrological model

2018 ◽  
Vol 379 ◽  
pp. 393-402
Author(s):  
Liu Liu ◽  
Zezhong Guo ◽  
Guanhua Huang
Keyword(s):  
Climate Change ◽  
River Basin ◽  
Statistical Downscaling ◽  
Arid Region ◽  
Meteorological Data ◽  
Water Productivity ◽  
Northwest China ◽  
Heihe River ◽  
Climate Change Scenarios ◽  
Increasing Trend

Abstract. The Heihe River Basin (HRB) is the second largest inland river basin, located in the arid region of Northwest China with a serious water shortage. Evaluation of water productivity will provide scientific implications for agricultural water-saving in irrigated areas of the arid region under climate change. Based on observed meteorological data, 23 GCMs outputs and the ERA-40 reanalysis data, an assemble statistical downscaling model was developed to generate climate change scenarios under RCP2.6, RCP4.5, RCP8.5 respectively, which were then used to drive the SWAP-EPIC model to simulate crop growth in the irrigated areas of the middle HRB for the future period from 2018 to 2047. Crop yield showed an increasing trend, while crop water consumption decreased gradually in Gaotai and Ganzhou irrigated areas. The water productivity in future 30 years showed an increasing trend in both Gaotai and Ganzhou areas, with the most significant increase under RCP4.5 scenario, which were both larger than 2 kg m−3. Compared with that of the period from 2012 to 2015, the water productivity during 2018–2047 under three RCP scenarios increased by 9.2, 14.3 and 11.8 % in the Gaotai area, and 15.4, 21.6, 19.9 % in the Ganzhou area, respectively.

The Response of Agricultural Water Demand to Climate Change in Shiyang River Basin, in Northwest China

2011 ◽  
Vol 347-353 ◽  
pp. 1964-1972
Author(s):  
Hua Qi Wang ◽  
Mao Sheng Zhang ◽  
Xue Ya Dang ◽  
Hua Zhu
Keyword(s):  
Climate Change ◽  
River Basin ◽  
Water Demand ◽  
Northwest China ◽  
Climate Change Scenarios ◽  
Positive Correlation ◽  
Shiyang River Basin ◽  
Precipitation Decrease ◽  
Guarantee Rate ◽  
Agriculture Water

This paper reports on the method of linking climate change scenarios with hydrologic and agricultural theory to study agriculture water demand under changing climate conditions, which is applied in Shiyang River basin, in Northwest China. We calculate agriculture water demand by use of Penman-Monteith formula and field water balance theory, droved by climate factors. This paper concludes that, the response of agriculture water demand to climate change exists, but the climate change can’t vary the basic law of water resources system; reference evapotranspiration (ET0) and temperature represent positive correlation, moreover, agriculture water demand and temperature also exist positive correlation, however, agriculture water demand and precipitation show the evident negative correlation; the influence of agriculture water demand which induced by temperature increase or decrease 1°C is larger than that induced by precipitation increasing or decreasing 10%; the influence range of agriculture water demand which induced by precipitation decrease is larger than that induced by precipitation increase; the influence range of agriculture water demand which induced in the guarantee rate of 75% is larger than that which induced in the guarantee rate of 50%; in additionally, the influence range of agriculture water demand in 2020 is larger than that in 2010. Therefore, in these relatively water shortage areas, changes in agriculture water demand due to climate change will require timely improvement in crop cultivars, irrigation and drainage technology, and water management.

Risk assessment of water resource shortages in the Aksu River basin of northwest China under climate change

2022 ◽  
Vol 305 ◽  
pp. 114394
Author(s):  
Peng Yang ◽  
Shengqing Zhang ◽  
Jun Xia ◽  
Yaning Chen ◽  
Yongyong Zhang ◽  
...  
Keyword(s):  
Climate Change ◽  
Risk Assessment ◽  
River Basin ◽  
Water Resource ◽  
Northwest China ◽  
Aksu River Basin

Impact of climate change on streamflow and water quality in the upper Dong Nai river basin, Vietnam

2018 ◽  
pp. 70-79 ◽  
Author(s):  
Le Viet Thang ◽  
Dao Nguyen Khoi ◽  
Ho Long Phi
Keyword(s):  
Climate Change ◽  
Water Quality ◽  
River Basin ◽  
Sediment Load ◽  
Swat Model ◽  
Future Climate Change ◽  
Climate Change Scenarios ◽  
Nutrient Load ◽  
Impact Of Climate Change ◽  
The Impact

In this study, we investigated the impact of climate change on streamflow and water quality (TSS, T-N, and T-P loads) in the upper Dong Nai River Basin using the Soil and Water Assessment Tool (SWAT) hydrological model. The calibration and validation results indicated that the SWAT model is a reasonable tool for simulating streamflow and water quality for this basin. Based on the well-calibrated SWAT model, the responses of streamflow, sediment load, and nutrient load to climate change were simulated. Climate change scenarios (RCP 4.5 and RCP 8.5) were developed from five GCM simulations (CanESM2, CNRM-CM5, HadGEM2-AO, IPSL-CM5A-LR, and MPI-ESM-MR) using the delta change method. The results indicated that climate in the study area would become warmer and wetter in the future. Climate change leads to increases in streamflow, sediment load, T-N load, and T-P load. Besides that, the impacts of climate change would exacerbate serious problems related to water shortage in the dry season and soil erosion and degradation in the wet season. In addition, it is indicated that changes in sediment yield and nutrient load due to climate change are larger than the corresponding changes in streamflow.

Assessing sugarcane expansion to ethanol production under climate change scenarios in Paranaíba river basin – Brazil

2018 ◽  
Vol 119 ◽  
pp. 436-445 ◽  
Author(s):  
Fernanda Cristina Oliveira Tayt’Sohn ◽  
Ana M.B. Nunes ◽  
Amaro Olimpio Pereira
Keyword(s):  
Climate Change ◽  
Ethanol Production ◽  
River Basin ◽  
Climate Change Scenarios

scholarly journals Impact of climate change on hydro-meteorological drought over the Be River Basin, Viet Nam

2021 ◽  
Author(s):  
Dao Nguyen Khoi ◽  
Truong Thao Sam ◽  
Pham Thi Loi ◽  
Bui Viet Hung ◽  
Van Thinh Nguyen
Keyword(s):  
Climate Change ◽  
River Basin ◽  
General Circulation ◽  
Southern Oscillation ◽  
Meteorological Drought ◽  
Climate Projections ◽  
Research Station ◽  
Climate Change Scenarios ◽  
Study Region ◽  
Meteorological Droughts

Abstract In this paper, the responses of hydro-meteorological drought to changing climate in the Be River Basin located in Southern Vietnam are investigated. Climate change scenarios for the study area were statistically downscaled using the Long Ashton Research Station Weather Generator tool, which incorporates climate projections from Coupled Model Intercomparison Project 5 (CMIP5) based on an ensemble of five general circulation models (Can-ESM2, CNRM-CM5, HadGEM2-AO, IPSL-CM5A-LR, and MPI-ESM-MR) under two Representative Concentration Pathway (RCP) scenarios (RCP4.5 and RCP8.5). The Soil and Water Assessment Tool model was employed to simulate streamflow for the baseline time period and three consecutive future 20 year periods of 2030s (2021–2040), 2050s (2041–2060), and 2070s (2061–2080). Based on the simulation results, the Standardized Precipitation Index and Standardized Discharge Index were estimated to evaluate the features of hydro-meteorological droughts. The hydrological drought has 1-month lag time from the meteorological drought and the hydro-meteorological droughts have negative correlations with the El Niño Southern Oscillation and Pacific Decadal Oscillation. Under the climate changing impacts, the trends of drought severity will decrease in the future; while the trends of drought frequency will increase in the near future period (2030s), but decrease in the following future periods (2050 and 2070s). The findings of this study can provide useful information to the policy and decisionmakers for a better future planning and management of water resources in the study region.

Influence of Headwater Reservoirs on Climate Change Impacts and Flood Frequency in the Kabul River Basin

2022 ◽  
Author(s):  
Yar M. Taraky ◽  
Yongbo Liu ◽  
Bahram Gharabaghi ◽  
Edward McBean ◽  
Prasad Daggupati ◽  
...  
Keyword(s):  
Climate Change ◽  
River Basin ◽  
Assessment Tool ◽  
Climate Change Impacts ◽  
Flood Frequency ◽  
Climate Change Scenarios ◽  
Wet Season ◽  
Quarter Century ◽  
Covered Area ◽  
Kabul River

While climate change impacts vary globally, for the Kabul River Basin (KRB), concerns are primarily associated with frequent flooding. This research describes the influence of headwater reservoirs on projections of climate change impacts and flood frequency, and how the riparian countries can benefit from storing of floodwaters for use during dry seasons. Six climate change scenarios and two Representative Concentration Pathways (RCPs) are used in three periods of a quarter-century each. The Soil and Water Assessment Tool (SWAT) is used to assess how the proposed reservoirs will reduce flooding by ~38% during the wet season, reduce the flood frequency from five to 25 years return period, and increase low flows by ~110% during the dry season, which reflect an ~17.5% reduction in the glacier-covered area by the end of the century. The risks and benefits of reservoirs are highlighted in light of the developmental goals of Afghanistan and Pakistan.

scholarly journals Flood Inundation Assessment under Climate Change Scenarios in Kuantan River Basin, Malaysia

2019 ◽  
Vol 328 ◽  
pp. 012013
Author(s):  
B Winarta ◽  
P T Juwono ◽  
V Dermawan ◽  
M I Ali ◽  
N I Ramli
Keyword(s):  
Climate Change ◽  
River Basin ◽  
Climate Change Scenarios ◽  
Flood Inundation
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