WebAug 30, 2009 · Highlights. 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. Positive NAO index values indicate these features are strong, creating a big pressure difference between them. WebApr 14, 2024 · Atlantic climate displays an oscillatory mode at a period of 10–15 years described as pan-Atlantic decadal oscillation. Prevailing theories on the mode are …
Climate Prediction Center - North Atlantic Oscillation (NAO)
WebMar 6, 2024 · Possible sources of the observed modulation of the tropical Madden-Julian oscillation (MJO) by the stratospheric quasi-biennial oscillation (QBO) and the 11-year solar cycle are investigated using 41 years of reanalysis data and … WebApr 13, 2024 · On March 9, NOAA’s Climate Prediction Center announced the end of the three-year La Niña, as well as a return to neutral El Niño Southern Oscillation (ENSO-neutral) conditions likely through Northern Hemisphere spring and early summer 2024. Asia had its second-warmest March on record at 7.34°F (4.08°C) above average. hipaw store
Atlantic multidecadal oscillation - Wikipedia
WebSouthern Oscillation Indices: Signal, Noise and Tahiti/Darwin SLP (SOI) Years of record. 1866-01 to 2024-01; The Southern Oscillation Index (SOI) is a time series used to characterize the large scale sea level pressure (SLP) patterns in the tropical Pacific. Monthly mean SLP at Tahiti [T] and Darwin [D] are used. An optimal SOI can be constructed. WebDec 19, 2005 · The Southern Oscillation Index (SOI) is one measure of the large-scale fluctuations in air pressure occurring between the western and eastern tropical Pacific (i.e., the state of the Southern Oscillation) during El Niño and La Niña episodes. Traditionally, this index has been calculated based on the differences in air pressure anomaly between ... WebDec 12, 2005 · The daily PNA index corresponds to the PNA patterns, which vary from one month to the next. Click here for the methodology used to calculate the daily PNA index. The daily PNA index for the past 120 days. Each daily value has been standardized by the standard deviation of the monthly PNA index from 1950 to 2000 interpolated to the day … homer simpson talking wall clock