The substantial reliance of South Asia (SA) to rain-based agriculture makes the region susceptible food scarcity due droughts. Previously, most research on SA has emphasized meteorological aspects with little consideration agrarian drought impressions. insufficient amount in situ precipitation data across also hindered thorough investigation sector. In recent times, models, satellite remote sen...

We have performed experiments using an ocean model to study the sensitivity of tropical Paci"c Ocean to variations in precipitation induced freshwater #uxes. Variations in these #uxes arise from natural causes on all time scales. In addition, estimates of these #uxes are uncertain because of di!erences among measurement techniques. The model used is a quasiisopycnal model, covering the Paci"c f...

introduction: the southern oscillation is a large scale phenomenon that changes the normal oscillating air pressure on both sides of the pacific ocean. it disrupted the normal conditions and the patterns of temperature and precipitation change in the nearby region and other regions of the world. this phenomenon is caused by changing the water slope in the pacific ocean between peru (northwester...

quantitative measurement of meteorological drought, z score(z), rainfall anomaly (rai), standard precipitation (spi) indices and percent of normal precipitation (pnpi) based upon seasonal and annual rainfall data of the 15 meteorological stations of meteorological in hamedan province were used. also, in studying influences of drought on agriculture relative yield index of wheat was used. the re...

The modulation of the North Pacific storm track by tropical convection on intraseasonal time scales (30– 90 days) in boreal winter (December–March) is investigated using the NCEP–NCAR reanalysis and NOAA satellite outgoing longwave radiation (OLR) data. Multivariate empirical orthogonal function (MEOF) analysis and case compositing based upon the principal components (PCs) of the EOFs reveal su...

The purpose of the present study is to assess large-scale signal modulation produced by two dynamically downscaled Seasonal Forecasting Systems (SFSs) and investigate if additional predictive skill can be achieved, compared driving global-scale Climate Forecast System (CFS). SFSs are evaluated in terms physical values anomaly interannual variability. Downscaled consist two-step dynamical ensemb...