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Snowmelt Processes
This module helps the student develop an understanding of the contribution of snowmelt in the hydrologic forecasting process. The module first explains the influences of wind, sun, terrain, and vegetation on snow water distribution and then discusses the evolution of snowpack characteristics. From there, the student will learn about energy exchanges between the snow and the atmosphere and how that affects how quickly and how completely snow will melt. Finally, an explanation is presented of water flow through snow and the fate of that water when it reaches the ground surface. The lesson will b ...
Flash Flood Case Studies
This module takes the learner through seven case studies of flash flood events that occurred in the conterminous U.S. between 2003 and 2006. The cases covered include: * 30-31 August 2003: Chase & Lyon Counties, KS * 16-17 September 2004: Macon County, NC * 31 July 2006: Santa Catalina Mountains near Tucson, AZ * 25 December 2003: Fire burn area near San Bernardino, CA * 30 August 2004: Urban flash flood in Richmond, VA * 19-20 August 2003: Urban flash flood in Las Vegas, NV * 9 October 2005: Cheshire County, NH This module assists the learner in applying the concepts covered in the foundation ...
River Ice Processes
The “River Ice Processes” module provides information on flooding associated with river ice jams. In this webcast, Dr. Kate White, nationally-recognized expert on river ice, explores basic river ice processes including the formation, growth, breakup, and transport of river ice and how it can become jammed, triggering floods. In addition, Dr. White covers the current, state-of-the-art ice jam forecasting, and current ice-modeling research and development being conducted by the U.S. Army Corps of Engineers. As a foundation topic for the Basic Hydrologic Science course, this module may be taken o ...
Flash Flood Processes
According to NOAA’s National Weather Service, a flash flood is a life-threatening flood that begins within 6 hours--and often within 3 hours--of a causative event. That causative event can be intense rainfall, the failure of a dam, levee, or other structure that is impounding water, or the sudden rise of water level associated with river ice jams. The “Flash Flood Processes” module offers an introduction to the distinguishing features of flash floods, the underlying hydrologic influences and the use of flash flood guidance (FFG) products. Through use of rich illustrations, animations, and inte ...
Runoff Processes
The Runoff Processes module offers a thorough introduction to the runoff processes critical for flood and water supply prediction. Through the use of rich illustrations, animations, and interactions, this module explains key terminology and concepts including paths to runoff, basin and soil properties and runoff modeling. It also provides an introduction to the National Weather Service River Forecast System (NWSRFS). As a foundation topic for the Basic Hydrologic Science course, this module may be taken on its own or used as a supporting topic to provide factual scientific information to stude ...
Mesoscale Banded Precipitation
Precipitation frequently falls and accumulates in discrete bands with accumulations that vary markedly over short distances. This module examines several mechanisms that result in mesoscale banded precipitation, focusing primarily on processes at work in midlatitude cyclones. The module starts with a review of the Norwegian and conveyor belt cyclone models. Then several banding processes are examined in detail, including deformation/frontogenesis, the Trowal (Trough of Warm Air Aloft), frontal merger, CSI/slantwise convection, and melting/evaporation-induced circulations. The module concludes ...
Understanding the Hydrologic Cycle
This module helps students gain a basic understanding of the elements of the hydrologic cycle. Making use of illustrations, animations, and interactions, this module examines the basic concepts of the hydrologic cycle including water distribution, atmospheric water, surface water, groundwater, and snowpack/snowmelt.
Unit Hydrograph Theory
The role of unit hydrograph theory in the flood prediction process is to provide an estimate of streamflow given the precipitation. A unit hydrograph shows the temporal change in flow, or discharge, per unit of runoff from excess precipitation. In other words, the unit hydrograph shows how the flow of a stream will be affected over time by the addition of one unit of runoff. This module offers a thorough introduction to the use of unit hydrographs and the application of unit hydrograph theory in flood prediction. Through use of rich illustrations, animations, and interactions, this module expl ...
Global Energy and Water Cycle Experiment, phase I
The Global Energy and Water Cycle Experiment (GEWEX) of the World Climate Research Programme (WCRP), sponsored by the World Meteorological Organization (WMO), the International Council for Science (ICSU), and the Intergovernmental Oceanographic Commission (IOC) of the United Nations Educational, Scientific and Cultural Organization (UNESCO), has amassed an outstanding record of accomplishments during the first phase of its planned program. From bringing hydrology, land surface, and atmospheric sciences communities together, to showing the importance of understanding soil moisture/atmosphere an ...
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A global water cycle theme for the IGOS partnership : report of the Global Water Cycle Theme Team
World Meteorological Organization (WMO) ; National Oceanic and Atmospheric Administration (NOAA); European Space Agency (ESA); et al. - ESA Publications Division, 2004
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WCRP Informal/Series Report, 4/2004. Report of the fourteenth session of the WCRP/GEWEX Radiation panel (GRP)
World Meteorological Organization (WMO) ; International Council for Science (ICSU); Intergovernmental Oceanographic Commission (IOC) - WMO, 2004
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WCRP Informal/Series Report, 1/2003. Report of the thirteenth session of the WCRP/GEWEX Radiation panel (GRP)
World Meteorological Organization (WMO) ; International Council for Science (ICSU); Intergovernmental Oceanographic Commission (IOC) - WMO, 2003
Forecasting Radiation Fog
This is the second module in the Mesoscale Meteorology Primer series. This module starts with a forecast scenario that occurs during a winter radiation fog event in the Central Valley of California. After that, a conceptual section covers the physical processes of radiation fog through its life cycle. Operational sections addressing fog detection and forecasting conclude the module
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WCRP Informal/Series Report, 3/2002. Report of the twelfth session of the WCRP/GEWEX Radiation panel (GRP)
World Meteorological Organization (WMO) ; International Council for Science (ICSU); Intergovernmental Oceanographic Commission (IOC) - WMO, 2002
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WCRP Informal/Series Report, 7/1999. Report of the eleventh session of the GEWEX Scientific steering group (GEWEX SSG)
World Meteorological Organization (WMO) ; International Council of Scientific Unions (ICSU); Intergovernmental Oceanographic Commission (IOC) - WMO, 1999
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WCRP Informal/Series Report, 6/1998. Atmospheric modelling and refinement of model physical parameterizations in support of WCRP and the global energy of water cycle experiment : report of the thirteenth session of the CAS/JSC Working group on numerical experimentation and first session of GEWEX modelling and prediction panel
World Meteorological Organization (WMO) ; Intergovernmental Oceanographic Commission (IOC); International Council of Scientific Unions (ICSU) - WMO, 1998
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WCRP Informal/Series Report, 2/1998. Report of the ninth session of the WCRP/GEWEX Radiation panel (GRP)
World Meteorological Organization (WMO) ; International Council of Scientific Unions (ICSU); Intergovernmental Oceanographic Commission (IOC) - WMO, 1998
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WCRP Informal/Series Report, 10/1997. Report of the ninth session of the GEWEX Scientific steering group (GEWEX SSG)
World Meteorological Organization (WMO) ; International Council of Scientific Unions (ICSU); Intergovernmental Oceanographic Commission (IOC) - WMO, 1997
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WCRP Informal/Series Report, 8/1997. Report of the First Workshop of the WCRP/GEWEX Water vapour project (GVaP)
World Meteorological Organization (WMO) ; International Council of Scientific Unions (ICSU); Intergovernmental Oceanographic Commission (IOC) - WMO, 1997
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WCRP Informal/Series Report, 6/1996. International workshop on Research issues in the identification and partitioning of precipitation type and rates in global data sets
World Meteorological Organization (WMO) ; International Council of Scientific Unions (ICSU); Intergovernmental Oceanographic Commission (IOC) - WMO, 1996
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