Global assessment of agreement among streamflow projections using CMIP5 model outputs

Runoff outputs from 11 atmosphere–ocean general circulation models (AOGCMs) participating in the fifth phase of Coupled Model Intercomparison Project were used to evaluate the changes in streamflow and agreement among AOGCMs at the end of 21st century. Under the highest emission scenario (Representative Concentration Pathways (RCP) 8.5), high flow is projected to increase in northern high latitudes of Eurasia and North America, Asia, and eastern Africa, while mean and low flows are both projected to decrease in Europe, Middle East, southwestern United States, and Central America. Projected changes under RCP4.5 show similar spatial distribution but with lower magnitude. The model spread of projected changes, however, is found to be large under both scenarios. Bootstrapped Mann–Whitney–Wilcoxon U test revealed that projected changes of streamflow regimes are statistically not significant in 8–32% (19–59%) of the world under RCP8.5 (RCP4.5). The model agreement on projected increase or decrease in mean and high flows is stronger under RCP8.5 than that under RCP4.5. On the other hand, the projected changes in low flow are robust in both scenarios with strong model agreement. In ∼7% (4%) of the world, high flow is projected to increase and low flow is projected to decrease, whereas in ∼29% (13%) all mean, high, and low flows are projected to increase under RCP8.5 (RCP4.5)

Atmospheric sciences · Climate change · Climate model · Climatology · Coupled model intercomparison project · Drainage basin · Flow (mathematics · General Circulation Model · Geography · Latitude · Physics · Representative Concentration Pathways · Streamflow · Surface runoff · Atmospheric and Environmental Gas Dynamics · Climate variability and models · Environmental Science · Hydrology and Watershed Management Studies · Geology · Oceanography

• Flexible water allocations and rotational delivery combined adapt irrigation systems to drought

  Open Access•Kelsey C Cody•Conservation Ecology•2018

  Incluir item

• Changing freshwater contributions to the Arctic

  Open Access•Tricia A Stadnyk, Andrew Tefs et al.•Elementa Science of the…•2021

  Incluir item

• Climate change may impair electricity generation and economic viability of future Amazon hydropower

  Open Access•Rafael M Almeida, Ayan Santos Fleischmann et al.•Global Environmental Change•2021

  Incluir item

• Lateral subsurface flow modulates forest mortality risk to future climate and elevated CO 2

  Open Access•Xiaonan Tai, Martín Venturas et al.•Environmental Research Letters•2021

  Incluir item

• Global implications of 1.5 °C and 2 °C warmer worlds on extreme river flows

  Open Access•Homero Paltán, Myles Allen et al.•Environmental Research Letters•2018

  Incluir item

• Historical and future runoff changes in the Yangtze River Basin from CMIP6 models constrained by a weighting strategy

  Open Access•Jiazhen Zhao, Shengping He et al.•Environmental Research Letters•2021

  Incluir item

• The critical role of the routing scheme in simulating peak river discharge in global hydrological models

  Open Access•Fang Zhao, Ted Veldkamp et al.•Environmental Research Letters•2017

  Incluir item

• Sustainability of agricultural basin development under uncertain future climate and economic conditions

  Open Access•Mahendran Roobavannan, Jaya Kandasamy et al.•Ecological Economics•2020

  Incluir item

• Degrading permafrost river catchments and their impact on Arctic Ocean nearshore processes

  Open Access•Paul J Mann, Jens Strauss et al.•AMBIO•2022

  Incluir item

• Climate change impact assessments on the water resources of India under extensive human interventions

  Open Access•C G Madhusoodhanan, K G Sreeja et al.•AMBIO•2016

  Incluir item

• Increasing risk of great floods in a changing climate

  Open Access•P C D Milly, R T Wetherald et al.•Nature•2002

  Incluir item

• Global water resources affected by human interventions and climate change

  Open Access•Ingjerd Haddeland, Jens Heinke et al.•Proceedings of the National…•2014

  Incluir item

• Stationarity Is Dead

  Open Access•P C D Milly, Julio L Betancourt et al.•Science•2008

  Incluir item

• Multimodel assessment of water scarcity under climate change

  Open Access•Jacob Schewe, Jens Heinke et al.•Proceedings of the National…•2014

  Incluir item

• The representative concentration pathways

  Open Access•Detlef P Van Vuuren, Jae Edmonds et al.•Climatic Change•2011

  Incluir item

• The next generation of scenarios for climate change research and assessment

  Open Access•Richard H Moss, Jae Edmonds et al.•Nature•2010

  Incluir item

• Global pattern of trends in streamflow and water availability in a changing climate

  Open Access•P C D Milly, K A Dunne et al.•Nature•2005

  Incluir item

• On a Test of Whether one of Two Random Variables is Stochastically Larger than the Other

  Open Access•H B Mann, Douglas R Whitney•The Annals of Mathematical…•1947

  Incluir item

• Asynchronous exposure to global warming

  Open Access•Dieter Gerten, Wolfgang Lucht et al.•Environmental Research Letters•2013

  Incluir item

• Assessing flood risk at the global scale

  Open Access•Philip J Ward, Brenden Jongman et al.•Environmental Research Letters•2013

  Incluir item

• Climate change and global water resources

  Open Access•Nigel W Arnell•Global Environmental Change•2004

  Incluir item