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Posts tagged Cloud Streets

Cloud Streets and Hazy Skies by Hainan Island, China

19.3N 109.8E

March 19th, 2010 Category: Clouds

China - March 5th, 2010

China - March 5th, 2010

Hainan Island (Hainan Dao) comprises all but three percent of the land mass of Hainan Province, China, despite the fact that the province includes some two hundred islands scattered among three archipelagos off the southern coast.

Hainan Island is located in the South China Sea, separated from Guangdong’s Leizhou Peninsula to the north by a shallow and narrow strait. To the west of Hainan is the Gulf of Tonkin. Hainan Dao has an area of 33,920 square kilometers and is China’s southernmost and smallest province. Wuzhi Mountain (1,876 m) is the highest point on the island.

Much of the land and water visible here appear hazy due to smoke from hundreds of fires blazing across Southeast Asia at the time the image was taken. Some clouds hug the southern coast of the island and reach across the sea in parallel rows, a phenomenon known as cloud streets.

Cloud Streets West of King Sound, Australia – March 11th, 2010

16.8S 123.4E

March 11th, 2010 Category: Clouds, Image of the day, Rivers

Australia - March 5th, 2010

Australia - March 5th, 2010

The series of straight, parallel lines in the clouds off the northwest coast of Australia is an atmospheric phenomenon known as cloud streets. East of the clouds is King Sound in Western Australia, laden with sediments from the Fitzroy River.

Cloud streets generally occur when warm air near the surface of the water rises and is carried by the wind, causing the air to roll and spin. This then creates parallel rows of horizontal vortices in the direction of the wind; since adjacent vortices spin in opposite directions, alternating clouded and cloud-free bands are created.

Cloud Streets and Wave Clouds Over Black Sea and Near Turkey – February 9th, 2010

43.0N 35.0E

February 9th, 2010 Category: Clouds, Image of the day

Turkey - January 25th, 2010

Turkey - January 25th, 2010

Parallel rows of cumulus clouds create a striped pattern over the Black Sea and the Sea of Azov (upper right corner). This phenomenon, known as cloud streets, stretches from the Ukraine in the North to  Turkey in the South. Parts of Russia (upper right), Moldova, Romania and Bulgaria (left side, from above to below) are also visible.

Upon opening the full image, all of Turkey and parts of the Mediterranean Sea are visible. A cloud phenomenon can be observed here as well: ridged or wavelike patterns, known as wave clouds.

Cloud Streets Over Black Sea and Ice Over Sea of Azov

43.5N 33.0E

January 31st, 2010 Category: Clouds

Russia - January 26th, 2010

Russia - January 26th, 2010

Cloud streets are rows of cumulus or cumulus-type clouds aligned parallel to the low-level wind. Here, such cloud streets form rows of parallel lines over the Black Sea, seemingly connecting the land by the Strait of Kerch (above center) in the north to Turkey in the south.

Much of the land visible is coated in snow, particularly Russia (upper right quadrant) and Ukraine and the Crimean Peninsula (upper left quadrant), while the Turkish landscape below shows some snow-free areas.

Reflecting these cold, wintery weather conditions is the Sea of Azov, which appears partially ice-covered. The shallowness and low salinity of the sea make it vulnerable to freezing during winter. Formation of sea ice can occur temporarily at any time from late December to mid-March.

Cloud Streets Over Somalia and Sediments Near Djibouti

11.3N 43.4E

January 27th, 2010 Category: Clouds

Somalia - January 6th, 2010

Somalia - January 6th, 2010

Upon opening the full version of this image of Somalia, it can be observed that the clouds partially veiling parts of the country are organized in parallel lines, a phenomenon known as cloud streets. Clouds also hug the peaks of the Surud Mountain Range near the northern coast, in the Maakhir region. Mount Shimbiris, the highest peak in Somalia, sits at an altitude of 2450 meters above sea level in this range.

Also visible near the coast in the full image is an outflow of sediments near the Djibouti border (upper left quadrant). These sediments are located near Zeila, a port city on the Gulf of Aden coast, situated in the Awdal region of Somalia. Zeila is surrounded on three sides by the sea. Landward, the country is unbroken desert for some fifty miles. It is known for its offshore islands, coral reef and mangroves.