Predictability of Recurrent Weather Regimes over North America during Winter from Submonthly Reforecasts ...

• Main Authors: Vigaud, Nicolas, Robertson, Andrew W., Tippett, Michael K.
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: Columbia University 2018
• Subjects: Weather; Climatic changes; Climatology > Forecasting; Environmental sciences; Indian; Merra; North Atlantic
• Online Access: https://dx.doi.org/10.7916/d8p85vhz; https://academiccommons.columbia.edu/doi/10.7916/D8P85VHZ

Four recurrent weather regimes are identified over North America from October to March through a k-means clustering applied to MERRA daily 500-hPa geopotential heights over the 1982–2014 period. Three regimes resemble Rossby wave train patterns with some baroclinicity, while one is related to an NAO...