Interdecadal changes in the links between Mediterranean evaporation and regional atmospheric dynamics during extended cold season

Abstract

Monthly evaporation data for 1958–2010 from the Woods Hole Oceanographic Institution dataset are used to investigate interdecadal changes in interannual variability of Mediterranean evaporation and its links to regional climate. Analysis performed for the two climate periods characterized by the downward (1958–1978) and upward (1979–2010) trends of evaporation revealed significant season‐dependent interdecadal changes in its interannual variability. The largest changes in interannual variability have been revealed during autumn when the leading empirical orthogonal functions (EOFs) are characterized by a zonal dipole pattern (except in November 1979–2010). During winter and spring, the EOF‐1 and EOF‐2 are characterized, respectively, by a monopole pattern and a zonal dipole and are associated with the East Atlantic (EA) and the East Atlantic–West Russia (EAWR) teleconnections. It is shown that interdecadal changes in interannual variability of Mediterranean evaporation during cold season were determined by the EA transition from the strongly negative to more neutral phase that occurred in late 1970s. Seasonally dependent changes in the structure of the leading evaporation EOFs reflect changing roles of the EA and EAWR which impact near surface air temperature, specific humidity and wind.

Summertime variability of Mediterranean evaporation: competing impacts from the mid latitudes teleconnections and the South Asian monsoon

“…This suggests that the analysis of summer seasonal mean evaporation variability is not representative and cannot give an objective picture regarding its drivers. This is in striking contrast to winter when, during the entire season (i.e., in all winter months), variability of Mediterranean evaporation is driven by the EA and EAWR teleconnections which is reflected in analyses of both monthly and seasonal means (e.g., Papadopoulos et al 2012;Zveryaev and Hannachi 2017). Though our analysis revealed statistically significant links between the leading modes of Mediterranean evaporation and regional teleconnections, the obtained correlations are not large.…”

A review of reproduction biology and spawning/ nursery grounds of the most important Adriatic commercial fish species in the last two decades

“…Selection of such geographical area is complex task that depends on numerous constraints referring to ecology and evolution (CIANNELLI et al, 2014). Bearing in mind that climatic conditions have changed during the last couple of decades in the Adriatic (GRBEC et al, 2015(GRBEC et al, , 2018ZVERYAEV & HANNACHI, 2017) devotion of the studied species to the same geographical area for spawning it was interrogative. This kind of investigation should also point out the possible gaps, changes and limitations in existing knowledge regarding the distribution of their early life stages in the Adriatic Sea.…”

Multidecadal Variability in Mediterranean Sea Surface Temperature and Its Sources

“…Since the MS region is located downstream of the North Atlantic and has complex topography, the MS climate is complicated and varies on a wide range of scales (Marullo et al., 2011). Significant MS multidecadal variability (MSMV) has been identified in sea surface temperature (SST), the hydrological cycle, and salinity (Mariotti, 2010; Mariotti & Dell'Aquila, 2012; Marullo et al., 2011; OrtizBevia et al., 2016; Skliris et al., 2012; Zveryaev & Hannachi, 2017).…”