H42D:
Integrated Observations/Modeling of Water Cycle Extremes and Attribution of Changes in the Components of the Hydrological Cycle to Human Influences I


Session ID#: 10610

Session Description:
Anthropogenic influence can alter the magnitude, variability, timing, frequency and other characteristics of the variables which constitute the hydrologic cycle. Analysis of this influence requires accurate observational records as well as climate and hydrologic simulations, and statistical models to separate the anthropogenic signal from internal variability. This session focuses on the improvements in understanding of human influence on the global and regional hydrologic cycle, advancements in the observed and simulated datasets used in attribution studies, and statistical approaches for the detection and attribution of anthropogenic influence. The session emphasizes climate and land use change and how they affect the patterns of precipitation, evapotranspiration, runoff, soil moisture, snow cover, snow water equivalent and their characteristics including timing, frequency, and magnitude. Studies which attribute recent hydroclimatic extreme events, in particular floods and droughts, to anthropogenic signals are strongly encouraged.
Primary Convener:  Mohammad Reza Najafi, Western University, Department of Civil and Environmental Engineering, London, ON, Canada
Conveners:  Richard G Lawford, Morgan State University, Baltimore, MD, United States, Francis W Zwiers, University of Victoria, Pacific Climate Impacts Consortium, Victoria, BC, Canada and Paul Raymond Houser, George Mason University Fairfax, Fairfax, VA, United States
Chairs:  Sushel Unninayar, NASA Goddard Space Flight Center, KBR/MSU, Greenbelt, United States and Mohammad Reza Najafi, Western University, Department of Civil and Environmental Engineering, London, ON, Canada
OSPA Liaison:  Sushel Unninayar, NASA Goddard Space Flight Center, KBR/MSU, Greenbelt, United States

Cross-Listed:
  • A - Atmospheric Sciences
  • GC - Global Environmental Change
  • IN - Earth and Space Science Informatics
  • NH - Natural Hazards
Co-Sponsor(s):
  • IGBP: International Geosphere-Biosphere Programme -
Index Terms:

1632 Land cover change [GLOBAL CHANGE]
1655 Water cycles [GLOBAL CHANGE]
1803 Anthropogenic effects [HYDROLOGY]
3305 Climate change and variability [ATMOSPHERIC PROCESSES]

Abstracts Submitted to this Session:

Roger S Pulwarty1, Wayne Higgins2, Claudia Nierenberg2 and Juli Trtanj2, (1)NOAA, Boulder, CO, United States, (2)NOAA, Climate Program Office, Silver Spring, DC, United States
Olga Zolina, IORAS, Moscow, Russia; LGGE, Saint Martin d'Heres, France, Clemens Simmer, University of Bonn, Bonn, Germany, Olga Bulygina, All-Russian Research Institute Hydrometeorological Information, Obninsk, Russia and Pavel Groisman, University Corporation for Atmospheric Research, Boulder, CO, United States
Matthew Rodell1, Benjamin F Zaitchik2, Augusto Getirana1,3, Bailing Li4,5, Sujay V Kumar6, Hiroko K Kato-Beaudoing5,7, Himanshu Save8 and Srinivas V Bettadpur9, (1)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (2)Johns Hopkins University, Baltimore, MD, United States, (3)Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD, United States, (4)NASA/GSFC, Greenbelt, United States, (5)Earth System Science Interdisciplinary Center, University of Maryland, College Park, United States, (6)NASA Goddard Space Flight Center, Hydrological Sciences Laboratory, Greenbelt, United States, (7)NASA GSFC HSL (ESSIC University of Maryland), Greenbelt, MD, United States, (8)The University of Texas at Austin, Center for Space Research, Austin, United States, (9)Center for Space Research, Austin, TX, United States
Ana Nunes, UFRJ Federal University of Rio de Janeiro, Department of Meteorology, Rio de Janeiro, Brazil
Dennis P Lettenmaier, University of California Los Angeles, Los Angeles, CA, United States
Noah S Diffenbaugh1, Daniel L Swain2 and Danielle E Touma2, (1)Stanford University, Earth System Science and Woods Institute for the Environment, Stanford, United States, (2)Stanford University, Earth System Science, Stanford, CA, United States
Lukas Gudmundsson, Institute for Atmospheric and Climate Science, ETH Zurich, Zurich, Switzerland and Sonia I Seneviratne, ETH Zurich, Department of Environmental Systems Science, Zurich, Switzerland
Carley Elizabeth Iles, University of Edinburgh, Edinburgh, United Kingdom and Gabriele C Hegerl, University of Edinburgh, Edinburgh, EH9, United Kingdom

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