The North Atlantic Oscillation (NAO) index is based on the surface sea-level pressure difference between the Subtropical (Azores) High and the Subpolar Low.

2005年12月12日 · The daily NAO index for the past 120 days. Each daily value has been standardized by the standard deviation of the monthly NAO index from 1950 to 2000 interpolated to the day in question. Daily NAO index since January 1950

2005年5月18日 · HOME > Monitoring and Data > Oceanic & Atmospheric Data > Northern Hemisphere Teleconnection Patterns > North Atlantic Oscillation (NAO) Map (Positive Phase)

2012年1月10日 · One of the most prominent teleconnection patterns in all seasons is the North Atlantic Oscillation (NAO) (Barnston and Livezey 1987). The NOA combines parts of the East-Atlantic and West Atlantic patterns originally identified by Wallace and Gutzler (1981) for …

Monthly average of the North Atlantic Oscillation (NAO), which compares the relative strength of semi-permanent high and low pressure patterns in the North Atlantic Ocean. A positive NAO index favors mild winters in the U.S. East. Negative values favor stronger cold-air outbreaks and increased storminess in the eastern U.S. NOAA Climate.gov ...

2009年8月30日 · The North Atlantic Oscillation (NAO) Index describes changes in the strength of two recurring pressure patterns in the atmosphere over the North Atlantic: a low near Iceland, and a high near the Azores Islands.

2025年1月23日 · The North Atlantic Oscillation (NAO) index is often defined as the difference of sea-level pressure between 2 stations situated close to the "centers of action" over Iceland and the Azores.