Overview of Atmospheric River Related Projects

Project Lead Agency Partners Dates Report/Link Highlights
HydroMeteorology Testbed (HMT) NOAA NWS, CA DWR, Scripps, USGS, USACE, SCWA 2004 - current hmt.noaa.gov Advance understanding and prediction of ARs and role in extreme precipitation; forecaster training and new tools
Enhanced Flood Response & Emergency Preparedness (EFREP- HMT West Legacy) California Dept. of Water Resources (CA-DWR) Scripps, NOAA 2008 - current Brochure Detecting and predicting AR conditions by Implement 21st Century observing system and decision support tool ("flux tool")
CalWater Experiment California Energy Commission (CEC) NOAA, Scripps, UCSD, DOE 2008 - current CalWater web page Explores implications for future water supply and extreme precipitation/flood; AR interactions with the Sierra Nevada mountains and how might ARs change in a changing climate
ARkStorm USGS NOAA, CalEMA, other 2009 - current Multi-Hazard West Coast Winter Storm Project Informed a major emergency preparedness scenario; series of landfalling ARs in California could cause > $500 Billion in damages
Howard Hanson Dam Crisis Rapid Response NOAA US Army Corps of Engineers 2009 - 2011 BAMS article Damage to key dam raised flood risk for Seattle; Atmospheric river observatory (ARO) and AR-focused training proved key in a coordinated effort to mitigate flood risk
Winter Storms and Atmospheric Rivers (WISPAR) NOAA NASA, Northrup Grumman 2010 - 2011 WISPAR Handout NASA's Global Hawk Unmanned Aircraft carried new dropsonde system to observe 3 AR events over the Pacific; potential platform for proposed AR reconnaissance program
AGU Fall 2010 Special Session n/a n/a 2010 Summary First ever special session on Atmospheric Rivers was held at AGU Fall 2010

AR Animation Loop

Animation of GFS forecast of integrated water vapor showing Atmospheric Rivers
Animation of atmospheric river event, February 2014. (CREDIT: NOAA/ESRL Physical Sciences Division)
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Real-Time Monitoring

link to AR detection displays page
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Atmospheric Rivers

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Notable AR Events

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Details about some major AR events

Related Projects

Overview of Projects
NOAA Hydrometeorology Testbed
CalWater 2

Forecasts

National Weather Service
Quantitative Precipitation (QPF)