Abstract: The climatology and interannual variability of North American extratropical cyclones are examined using 6-hourly sea level pressure data from the NCEP?NCAR reanalysis for the period 1950?2002 and ECMWF 40-yr Re-Analysis ...

Abstract: An international team of scientists from the United States, Mexico, and Central America carried out a major field campaign during the summer of 2004 to develop an improved understanding of the North American monsoon system ...

Abstract: Extreme precipitation events are among the most devastating weather phenomena since they are frequently accompanied by loss of life and property. This study uses reforecasts of the NCEP Climate Forecast System (CFS.v1) to ...

Abstract: series of 60-day hindcasts by the Climate Forecast System (CFS) of the National Centers for Environmental Prediction is analyzed to understand the impacts of atmospheric model resolutions and initial conditions on predictions ...

Abstract: uring the boreal summer (June?August), vigorous convection appears over the eastern Pacific, southern Mexico, and northern South America, and oscillates on a distinct time scale of 10?20 days. Extended empirical orthogonal ...

Abstract: he Madden?Julian oscillation (MJO) is the most prominent form of tropical intraseasonal variability that impacts weather and climate. Forecast skill of extreme precipitation in the contiguous United States (CONUS) during ...

Abstract: Precipitation variability significantly influences the heavily populated West Coast of the United States, raising the need for reliable predictions. We investigate the region?s short- to extended-range precipitation ...

Abstract: This work examines the performance of Madden?Julian oscillation (MJO) forecasts from NCEP?s coupled and uncoupled general circulation models (GCMs) and statistical models. The forecast skill from these methods is evaluated ...

Abstract: In 1997, during the late stages of production of NCEP-NCAR Global Reanalysis (GR), exploration of a regional reanalysis project was suggested by the GR project's Advisory Committee, ?particularly if the RDAS [Regional Data ...

Abstract: The U.S. Climate Variability and Predictability (CLIVAR) working group on drought recently initiated a series of global climate model simulations forced with idealized SST anomaly patterns, designed to address a number of ...