Black Sea which are largely responsible for regional precipitation inputs and influence Mediterranean Sea Surface Temperatures (SST's). The relative strength of these systems also limits the amount of cold air arriving from northern regions during winter. Other influencing factors include the regional topography, as depressions and storms systems arriving from the Mediterranean are funneled through the low land around the Bosphorus, Pontic and Caucasus mountain ranges acting as wave guides, limiting the speed and paths of cyclones passing through the region. There are some islands in the Black sea that belong to Bulgaria, Romania, Turkey, and Ukraine: The Black Sea is connected
Black Sea Lowland Plateau, Podillia Upland, Dnieper Upland, Zaporizhian Ridge, Azov Upland. Azov, Crimean, and Bugeac lowlands consider to be extension of the Black Sea Lowland and its regional extremities. Black Sea Lowland is an accumulative, weakly divided plain which being part of the greater Eastern European Plain gradually slopes towards the Black Sea and the Sea of Azov. Black Sea Lowland Black Sea Lowland is a major geographic feature of the Northern Pontic region and the East European Plain. It almost completely within the Southern Ukraine covering half of its territory. The lowland is located along the northern shores of Black Sea.