The North American Monsoon Experiment (NAME) is an internationally coordinated process study aimed at determining the sources and limits of predictability of warm-season precipitation over North America. The scientific objectives of NAME are to promote a better understanding and more realistic simulation of warm-season convective processes in complex terrain, intraseasonal variability of the monsoon, and the response of the warm-season atmospheric circulation and precipitation patterns to slowly varying, potentially predictable surface boundary conditions.

During the summer of 2004, the NAME community implemented an international (United States, Mexico, Central America), multiagency (NOAA, NASA, NSF, USDA) field experiment called NAME 2004. This article presents early results from the NAME 2004 campaign and describes how the NAME modeling community will leverage the NAME 2004 data to accelerate improvements in warm-season precipitation forecasts for North America.

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NOAA/NCEP/Climate Prediction Center, Camp Springs, Maryland

NCAR, Boulder, Colorado

University of Costa Rica, San Jose, Costa Rica

Duke University, Durham, North Carolina

University of Maryland, College Park, College Park, Maryland

Universidad Nacional Autonoma de México, Mexico City, Mexico

Colorado State University, Fort Collins, Colorado

Servicio Meteorólégico Nacional, Mexico City, Mexico

Creighton University, Omaha, Nebraska

NOAA/National Severe Storms Laboratory, Norman, Oklahoma

UCAR/JOSS, Boulder, Colorado

NOAA/ETL, Boulder, Colorado

University of New Mexico, Albuquerque, New Mexico

ARS/USDA, Beltsville, Maryland

NASA/GSFC, Greenbelt, Maryland

University of Washington, Seattle, Washington

Instituto Mexicano de Tecnología del Agua, Jiutepec, Mexico

Centro de Investigacíon Cientifica y de Educación Superior de Ensenada, Ensenada, Mexico

NOAA/NWS, Tucson, Arizona

University of Colorado and NOAA/ETL, Boulder, Colorado

University of Colorado, and NOAA/AL, Boulder, Colorado

RSMAS, University of Miami, Miami Florida