Results 141 to 150 of about 4,066,141 (184)
Complex North Atlantic Oscillation (NAO) Index signal of historic North Atlantic storm-track changes
Holocene, 2002 Previous reports have suggested a link between increased storminess in the North Atlantic during recent years with a period of time during which the North Atlantic Oscillation Index has been strongly positive. New analyses of late nineteenth-century gale-
A G Dawson
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Arctic Oscillation or North Atlantic Oscillation?
Journal of Climate, 2001Abstract The definition and interpretation of the Arctic oscillation (AO) are examined and compared with those of the North Atlantic oscillation (NAO). It is shown that the NAO reflects the correlations between the surface pressure variability at its centers of action, whereas this is not the case for the AO.
Maarten H. P. Ambaum +2 more
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Ecological effects of the North Atlantic Oscillation
Oecologia, 2001Climatic oscillations as reflected in atmospheric modes such as the North Atlantic Oscillation (NAO) may be seen as a proxy for regulating forces in aquatic and terrestrial ecosystems. Our review highlights the variety of climate processes related to the NAO and the diversity in the type of ecological responses that different biological groups can ...
Geir, Ottersen +5 more
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Pinkness of the North Atlantic Oscillation signal revisited
Physica A: Statistical Mechanics and its Applications, 2010The long episode of negative values in the North Atlantic Oscillation (NAO) index during the winter season 2009–2010 has attracted more attention to its predictability. Previous analyses (Fernández et al. (2003) [16] and Caldeira et al. (2007) [25]) by this same author group have established that the NAO signal behaves as a slightly red noise and ...
Fernández, I. +2 more
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North Atlantic climate variability: The role of the North Atlantic Oscillation
Journal of Marine Systems, 2009Abstract Marine ecosystems are undergoing rapid change at local and global scales. To understand these changes, including the relative roles of natural variability and anthropogenic effects, and to predict the future state of marine ecosystems requires quantitative understanding of the physics, biogeochemistry and ecology of oceanic systems at ...
James W. Hurrell, Clara Deser
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Decoupling of the Arctic Oscillation and North Atlantic Oscillation in a warmer climate
Nature Climate Change, 2021The North Atlantic Oscillation and the Arctic Oscillation are modes of climate variability affecting temperature and precipitation in the mid-latitudes. Here we use reanalysis data and climate model simulations of historical and warm climates to show that the relationship between the two oscillations changes with climate warming.
Mostafa E. Hamouda +2 more
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Climate change and the North Atlantic Oscillation
2003Over recent decades the boreal winter index of the North Atlantic Oscillation (NAO) has exhibited an upward trend, corresponding to lowered surface pressure over the Arctic and increased surface pressure over the subtropical North Atlantic. This trend has been associated with over half the winter surface warming in Eurasia over the past thirty years ...
Gillett, Nathan P. +2 more
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The North Atlantic Oscillation
Stochastic Environmental Research and Risk Assessment, 2000The North Atlantic Oscillation (NAO) is the most important mode of variability in the northern hemisphere (NH) atmospheric circulation. Put simply, the NAO measures the strength of the westerly winds blowing across the North Atlantic Ocean between 40°N and 60°N. The NAO is not a regional, North Atlantic phenomenon, however, but rather is hemispheric in
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An overview of the North Atlantic Oscillation
2003The North Atlantic Oscillation (NAO) is one of the most prominent and recurrent patterns of atmospheric circulation variability. It dictates climate variability from the eastern seaboard of the United States to Siberia and from the Arctic to the subtropical Atlantic, especially during boreal winter, so variations in the NAO are important to society and
James W. Hurrell +3 more
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On the separability of the North Atlantic oscillation and Arctic oscillation
Climate Dynamics, 2002We address the issue of whether the Arctic (AO), and North Atlantic oscillations (NAO) are inseparable, forming an annular mode in the Northern Hemisphere atmospheric circulation. This annular mode is the leading empirical orthogonal function of hemispheric sea level pressure (SLP) data, explaining the largest amount of its variability.
Rogers J., McHugh M.
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