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 turquoise), Middle Persian / ("blue"), and New Persian ("blue"), as well as Ossetic (“dark gray"). The ancient Greeks, most likely those living to the north of the Black Sea, subsequently adopted the name and altered it to . Thereafter, Greek tradition refers to the Black Sea as the "Inhospitable Sea", , which is first attested in Pindar (). The name was considered to be "ominous" and was later changed into the euphemistic name "Hospitable sea", , which was also for the first time attested in Pindar. This became the commonly used designation for the sea in Greek. In contexts related