The North-Africa/Western Asia (NAWA) sea level pressure index: A Mediterranean signature of the Northern Annular Mode (NAM)

Yves M. Tourre; Shlomit Paz

doi:10.1029/2004GL020414

The North-Africa/Western Asia (NAWA) sea level pressure index: A Mediterranean signature of the Northern Annular Mode (NAM)

Yves M. Tourre, Shlomit Paz

Department of Geography and Environmental Studies

Research output: Contribution to journal › Article › peer-review

Abstract

Following work by Paz et al. [2003], the relationship between NAWA and the Eastern Mediterranean (EM) winter climate is explored further. It is found that NAWA can be viewed as the regional signature of the hemispheric northern annular mode (NAM), at all time scales. While in-phase variability of winter NAM and NAWA increased after the so-called climate shift of 1976-77, largest correlation between the two indices is found during January. This is also the month when largest correlations are to be found between NAM and the NAWA poles. Correlations between NAWA and NAM are larger than that between NAWA and the North Atlantic Oscillation (NAO). Further evidence of direct relationship between NAM, NAWA, winter air temperature and rainfall in the EM is given.

Original language	English
Pages (from-to)	L17209 1-4
Journal	Geophysical Research Letters
Volume	31
Issue number	17
DOIs	https://doi.org/10.1029/2004GL020414
State	Published - 16 Sep 2004

Keywords

1610 Global change: Atmosphere (0315, 0325)
1620 Global change: Climate dynamics (3309)
1809 Hydrology: Desertification
3309 Meteorology and Atmospheric Dynamics: Climatology (1620)
3354 Meteorology and Atmospheric Dynamics: Precipitation (1854)

ASJC Scopus subject areas

Geophysics
General Earth and Planetary Sciences

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1029/2004GL020414

Cite this

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title = "The North-Africa/Western Asia (NAWA) sea level pressure index: A Mediterranean signature of the Northern Annular Mode (NAM)",

abstract = "Following work by Paz et al. [2003], the relationship between NAWA and the Eastern Mediterranean (EM) winter climate is explored further. It is found that NAWA can be viewed as the regional signature of the hemispheric northern annular mode (NAM), at all time scales. While in-phase variability of winter NAM and NAWA increased after the so-called climate shift of 1976-77, largest correlation between the two indices is found during January. This is also the month when largest correlations are to be found between NAM and the NAWA poles. Correlations between NAWA and NAM are larger than that between NAWA and the North Atlantic Oscillation (NAO). Further evidence of direct relationship between NAM, NAWA, winter air temperature and rainfall in the EM is given.",

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AU - Tourre, Yves M.

AU - Paz, Shlomit

PY - 2004/9/16

Y1 - 2004/9/16

N2 - Following work by Paz et al. [2003], the relationship between NAWA and the Eastern Mediterranean (EM) winter climate is explored further. It is found that NAWA can be viewed as the regional signature of the hemispheric northern annular mode (NAM), at all time scales. While in-phase variability of winter NAM and NAWA increased after the so-called climate shift of 1976-77, largest correlation between the two indices is found during January. This is also the month when largest correlations are to be found between NAM and the NAWA poles. Correlations between NAWA and NAM are larger than that between NAWA and the North Atlantic Oscillation (NAO). Further evidence of direct relationship between NAM, NAWA, winter air temperature and rainfall in the EM is given.

AB - Following work by Paz et al. [2003], the relationship between NAWA and the Eastern Mediterranean (EM) winter climate is explored further. It is found that NAWA can be viewed as the regional signature of the hemispheric northern annular mode (NAM), at all time scales. While in-phase variability of winter NAM and NAWA increased after the so-called climate shift of 1976-77, largest correlation between the two indices is found during January. This is also the month when largest correlations are to be found between NAM and the NAWA poles. Correlations between NAWA and NAM are larger than that between NAWA and the North Atlantic Oscillation (NAO). Further evidence of direct relationship between NAM, NAWA, winter air temperature and rainfall in the EM is given.

KW - 1610 Global change: Atmosphere (0315, 0325)

KW - 1620 Global change: Climate dynamics (3309)

KW - 1809 Hydrology: Desertification

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KW - 3354 Meteorology and Atmospheric Dynamics: Precipitation (1854)

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The North-Africa/Western Asia (NAWA) sea level pressure index: A Mediterranean signature of the Northern Annular Mode (NAM)

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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