![]() ![]() There is very little rain throughout southeast Iran and frost would be a great novelty. Down in the south of Baluchestan, along the coast of the sea of Oman, the climate is similar to that of the Persian Gulf region, or even hotter, with strong winds in summer. Up in Sistan conditions are harsh: the hot season lasts from April to November with an average temperature of 50 degrees centigrade winter is equally unpleasant with extreme cold until March. Summers are hot and dry, winters mild and dry. In the far southeast of Iran, away from the Persian Gulf proper, temperatures are a little lower. The Dasht-e Lut to the south is, if anything, even worse almost completely devoid of water from any direction and the last word in extreme aridity. If any time of the year can be called pleasant in this salty wasteland, it would have to be between October and December. Winters are not much better, and at night the temperature can fall well below zero. The Desht-e Kavir, southeast of the capital, is harsh, inhospitable and very very hot in summer. The central plateau of Iran is marked by hot and dry summers and sporadic rainy winters. Showers are frequent between November and mid may, but rare in summer. Winters in the capital can be very chilly, extremely so at night, although any snow usually disappears by early march. But it is not humid, and the evenings are cool and refreshing. In Tehran, in the central and southern Tehran in summer are hot, dry and stuffy, but you only have to make a short bus ride up to the foothills of Damavand to cool down by several degrees. The regions along the mountainous parts of the country have milder summers and colder winters. Along the Persian Gulf regions, in spite of meager precipitation, in certain seasons, the climate is very humid. With the exception of the Caspian watershed, both sides of the Zagros range, and that of the Orumieh Lake basin, the country has probably in no part a yearly rainfall exceeding 33 to 36 centimeters and throughout the greater part of central and southeastern Iran the yearly rainfall is probably under 15 centimeters.Īlong the shores of the Caspian the average precipitation is from 1,200 to 2,000 mm. NASA images created by Jesse Allen, Earth Observatory, using data provided courtesy of the NASA/GSFC/MITI/ERSDAC/JAROS, and U.S./Japan ASTER Science Team.Broadly speaking, the further south you go the warmer it becomes. Astronauts on the International Space Station photographed salt lakes from Dasht-e Lut and nearby faulted rocks on February 28, 2006. ASTER acquired this image on July 17, 2003.ĭasht-e Lut’s dramatic landscapes are a popular remote-sensing target. Golden dunes make swirling pattenrs across the image, becoming less tightly packed in the bottom of the scene. In this image, the white areas are saltpans-the aftermath of water that drained into the basins among the dunes and later evaporated. This area consists of sand, and it contains some of the world’s tallest dunes, some reaching a height of 300 meters (1,000 feet). The picture on the right shows part of the southeastern portion of Dasht-e Lut. ASTER acquired this image on May 13, 2006. These wind-sculpted ridges are known as yardangs, and geologic research has determined that Iran contains some of the world’s largest yardangs. The strong diagonal lines result from wind erosion that has carved deep troughs and sharp ridges into the landscape. The picture on the left shows part of the central portion of Dasht-e Lut. These images, captured by the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) on NASA’s Terra satellite show landscapes so different, one can scarcely imagine they come from the same part of the world, let alone the same desert basin. Although the entire salt desert has just one name, it has more than one appearance. The desert fills a low basin that stretches southward from the Khorasan province into the Kerman province. Roughly 480 by 320 kilometers (300 by 200 miles), Dasht-e Lut is a large salt desert in southeastern Iran. ![]()
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