NAO variability on the two timescales is associated with different dynamical behaviour in terms of eddy-mean flow interaction, Rossby wave breaking and blocking. The two timescales also exhibit different regional impacts on temperature and precipitation and different relationships to sea surface temperatures. These results are derived from linear regression analysis of the Twentieth Century and...

Statistical and synoptic studies of spring dust storms over the Arabian Peninsula (AP) were performed using surface observations from 27 stations meteorological data NCEP/NCAR reanalysis set for period 1978-2008. The study showed that, spatially, northern eastern AP are regions most affected by temporally, can be divided into two subperiods: before after 1995, with a pronounced increase 1995 sm...

The present study used a new net surface heat flux (Qnet) product obtained from the Objective Analyzed Air–Sea Fluxes (OAFlux) project and the International Satellite Cloud Climatology Project (ISCCP) to examine two specific issues—one is to which degree Qnet controls seasonal variations of sea surface temperature (SST) in the tropical Atlantic Ocean (20°S–20°N, east of 60°W), and the other is ...

The role of interdecadal wind stress variability in the genesis ENSO diversity is examined by using an intermediate coupled model (ICM) tropical Pacific; two types experiments are performed, one with original ICM, and other ( $${\uptau }_{interde}$$ ) effect being explicitly represented. component derived from NCEP/NCAR reanalysis dataset as follows. First, ensemble empirical mode decomposition...

We apply a simple dynamical rule to determine the dominant forcing direction in locally coupled oceanatmosphere anomalies in the National Centers for Environmental Prediction/National Center for Atmospheric Research (NCEP/ NCAR) reanalysis data. The rule takes into account the phase relationship between the low-level vorticity anomalies and the Sea Surface Temperature (SST) anomalies. Analysis ...