Interannual variability of Mediterranean evaporation and its relation to regional climate

Zveryaev, Igor I.; Hannachi, Abdel

doi:10.1007/s00382-011-1218-7

Cited by 20 publications

(24 citation statements)

References 36 publications

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“…In agreement with previous studies of Josey et al (2011), Zveryaev, andHannachi (2011), the first mode is highly correlated with the EA mode (see also Fig. 5, bottom time series).…”

Section: Interannual To Decadal Links To the Regional Climatesupporting

confidence: 92%

“…Its temporal variability, which tracks the domain average fluctuations of LHF (up to R = 0.99, see Fig. 5), is strongly correlated with the atmospheric variability of the EA (R = 0.5) (Zveryaev and Hannachi 2011). However, we found that the PC1 of LHF exhibited, after 1990, a clear trend not visible in the EA index.…”

Section: Summary and Discussionmentioning

confidence: 69%

“…Josey et al (2011) examined the impact of these modes on Mediterranean Sea surface heat flux during extreme seasons (i.e., summer and winter) and concluded that the NAO-the dominant mode of atmospheric variability in this region-has a minor impact on NHF variability compared to the EA and EA/WR patterns, which explain the largest fraction of NHF variability. Zveryaev and Hannachi (2011) found a direct link between the EA pattern and the leading mode of evaporation variability but no significant correlation with the EA/WR pattern. Papadopoulos et al (2012b) identified two main responses of the NHF to the regional atmospheric teleconnection patterns: a uniform basin-wide response and an out-of-phase response in the western and eastern sub-basins, which we will refer to as the dipole pattern.…”

Section: Introductionmentioning

confidence: 82%

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A multi-model ensemble view of winter heat flux dynamics and the dipole mode in the Mediterranean Sea

2016

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humidity (e.g., wind advection). A simple reconstruction of the heat flux variability over the deep-water formation regions of the Gulf of Lion and the Aegean Sea reveals that the combination of the monopole and dipole time series explains over 90 % of the heat flux variance in these regions. Given the important role that surface heat flux anomalies play in deep-water formation and the regional climate, improving our knowledge on the dynamics controlling the leading modes of heat flux variability may enhance our predictability of the climate of the Mediterranean area.

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“…In agreement with previous studies of Josey et al (2011), Zveryaev, andHannachi (2011), the first mode is highly correlated with the EA mode (see also Fig. 5, bottom time series).…”

Section: Interannual To Decadal Links To the Regional Climatesupporting

confidence: 92%

Section: Summary and Discussionmentioning

confidence: 69%

Section: Introductionmentioning

confidence: 82%

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A multi-model ensemble view of winter heat flux dynamics and the dipole mode in the Mediterranean Sea

2016

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“…The obtained correlation pattern is dominated by the extensive center of negative correlations located in the northeastern Atlantic, west of the British Isles, and very weak center of (insignificant) positive correlations over the eastern Mediterranean Sea. The strong action center over the northeastern Atlantic is indeed indicative of the EA teleconnection pattern [e.g., Barnston and Livezey , ; Zveryaev and Hannachi , ]. We have also examined the links to regional teleconnections and found significant link between winter PC‐1 of Mediterranean SST and the index of the EA teleconnection pattern with correlation 0.51.…”

Section: Relation To Regional Atmospheric Dynamicsmentioning

confidence: 99%

Seasonal differences in intraseasonal and interannual variability of Mediterranean Sea surface temperature

Zveryaev

2015

JGR Oceans

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Sea surface temperature (SST) data from the NOAA OI SST data set for 1982-2011 are used to investigate intraseasonal and interannual variability of Mediterranean SST during winter and summer seasons. It is shown that during winter the intraseasonal SST fluctuations are larger than the interannual SST variations in the western Mediterranean (e.g., the Tyrrhenian Sea), but smaller in the central and eastern Mediterranean Sea. In summer, the intraseasonal SST fluctuations are larger in almost the entire Mediterranean basin. Also summertime intraseasonal SST fluctuations are larger (up to three times near the Gulf of Lions) than their wintertime counterparts in the entire Mediterranean basin. The interannual SST variations are larger during summer in the western and central Mediterranean Sea and during winter in its eastern part. The leading empirical orthogonal functions (EOFs) of the Mediterranean SST and of the intensities of its intraseasonal fluctuations are characterized by the differing spatial-temporal structures both during winter and summer implying that their interannual variability is driven by different physical mechanisms. During winter, the EOF-1 of SST is associated with the East Atlantic teleconnection, whereas EOF-1 of the intensity of intraseasonal fluctuations is not linked significantly to regional atmospheric dynamics. The second EOFs of these variables are associated, respectively, with the East Atlantic/West Russia and the North Atlantic teleconnections. While during summer the atmospheric influence on Mediterranean SST is generally weaker, it is revealed that the EOF-1 of the intensity of intraseasonal SST fluctuations is linked to the Polar teleconnection.

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“…Analyses of the moisture transports over the eastern Mediterranean using high-resolution models (Jin et al 2011), reanalyses (Krichak et al 2012;Zveryaev and Hannachi 2012;Sahin et al 2015), and satellite data (Krichak et al 2016) hint at strong linkages between the moisture budgets over the Mediterranean and the Red Sea, also involving eastern Mediterranean cyclones (Almazroui and Awad 2016). Also of interest is the role of the moisture sources associated with the Indian Ocean and controlled by the monsoon systems and the Somali jet.…”

Section: Discussion and Perspectivesmentioning

confidence: 99%

Regional Hydrological Cycle over the Red Sea in ERA-Interim

Zolina

Dufour

Gulev

et al. 2016

Journal of Hydrometeorology

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The major sources of atmospheric moisture over the Red Sea are analyzed using ERA-Interim for the 1979-2013 period. The vertical structure of moisture transports across the coastlines has been computed separately for the western and eastern coasts of the Red Sea. The vertical structure of the moisture transport from the Red Sea to the continents is dominated by a breeze-like circulation in the near-surface layer and the Arabian high above 850 hPa. The lower-layer, breeze-like circulation is acting to export the moisture to the northwest of Africa and to the Arabian Peninsula and contributes about 80% of the moisture exports from the Red Sea, dominating over the transport in the upper layer, where the moisture is advected to the Arabian Peninsula in the northern part of the sea and to the African continent in the southern part. Integrated moisture divergence over the Red Sea decreased from the early 1980s to 1997 and then increased until the 2010s. Associated changes in the moisture export were provided primarily by the increasing intensity of the breeze-associated transports. The transports above the boundary layer, while being strong across the western and the eastern coasts, have a smaller effect on the net moisture export. The interannual variability of the moisture export in the near-surface layer was found to be closely correlated with the variability in sea surface temperature, especially in summer. Implications of the observed changes in the moisture advection for the hydrological cycle of the Middle East are discussed.

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Interannual variability of Mediterranean evaporation and its relation to regional climate

Cited by 20 publications

References 36 publications

A multi-model ensemble view of winter heat flux dynamics and the dipole mode in the Mediterranean Sea

A multi-model ensemble view of winter heat flux dynamics and the dipole mode in the Mediterranean Sea

Seasonal differences in intraseasonal and interannual variability of Mediterranean Sea surface temperature

Regional Hydrological Cycle over the Red Sea in ERA-Interim

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