[:ja]宇宙飛行士がISSから撮影したアリューシャン列島近くの船舶の航跡雲です。アリューシャン列島近くを通る船舶は中国や日本とカナダや米国をつなぐルートのようです。
船舶の航行時に放出される排気ガスには可溶性の微粒子が含まれていますが、湿った気象条件の海洋上において、航跡雲はこの微粒子を核として生成されます。船舶の排気ガスによって生成された雲は、一般の雲に比べて多くの水滴を有しており、より明るい雲として見えます。
参考文献： Ship Tracks, Aleutian Islands (NASA Earth Observatory)
地球俯瞰画像を見る： LiVEARTH
[Earthview Wonders] No.1020: Ship Contrails Near Aleutian Islands
Astronaut on board ISS captured the ship contrails near Aleutian Islands. The contrails are presumably the tracks of ships that connect Japan or China and Canada and/or the U.S.
Ship tracks are clouds that form around the exhaust released by ships into the still ocean air. Water molecules collect around the tiny particles (aerosols) from exhaust to form a cloud seed. More and more water accumulates on the seed until a visible cloud is formed. In the case of ship tracks, the cloud seeds are stretched over a long narrow path where the wind has blown the ship’s exhaust, so the resulting clouds resemble long strings over the ocean.
Reference: Ship Tracks, Aleutian Islands (NASA Earth Observatory)
See earthview photo gallery: LiVEARTH[:en][Earthview Wonders] No.1020: Ship Contrails Near Aleutian Islands
Astronaut on board ISS captured the ship contrails near Aleutian Islands. The contrails are presumably the tracks of ships that connect Japan or China and Canada and/or the U.S.
Ship tracks are clouds that form around the exhaust released by ships into the still ocean air. Water molecules collect around the tiny particles (aerosols) from exhaust to form a cloud seed. More and more water accumulates on the seed until a visible cloud is formed. In the case of ship tracks, the cloud seeds are stretched over a long narrow path where the wind has blown the ship’s exhaust, so the resulting clouds resemble long strings over the ocean.
Reference: Ship Tracks, Aleutian Islands (NASA Earth Observatory)
See earthview photo gallery: LiVEARTH[:]