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Posts tagged Condensation Trails

Contrails Over the United Kingdom and France

51.5N 0.4E

January 26th, 2012 Category: Clouds

United Kingdom and France - January 6th, 2012

Contrails (short for “condensation trails”) or vapour trails are artificial clouds that are the visible trails of condensed water vapour made by the exhaust of aircraft engines. As the hot exhaust gases cool in the surrounding air they may precipitate a cloud of microscopic water droplets or, if the air is cold enough, tiny ice crystals. Here, many such contrails can be observed in the airspace over the United Kingdom and France.

Depending on atmospheric conditions, contrails may be visible for only a few seconds or minutes, or may persist for many hours, which may affect climate. Contrails tend to last longer if there is higher moisture in the atmosphere and associated higher level clouds such as cirrus, cirrostratus and cirrocumulus already present before the plane flies through.

Contrails Over Aegean Islands, Greece and Turkey

37.2N 25.3E

November 19th, 2011 Category: Clouds

Greece and Turkey - November 8th, 2011

The Aegean Islands are a large group of islands in the Aegean Sea, with mainland Greece to the west and north and Turkey to the east; the island of Crete delimits the sea to the south, those of Rhodes, Karpathos and Kasos to the southeast.

The Aegean Islands belong mostly to Greece, being split among nine administrative peripheries. The only sizable possessions of Turkey in the Aegean Sea are Imbros (Gökçeada) and Tenedos (Bozcaada), in the northeastern end of the Sea. The Turkish islands also include various smaller islets off Turkey’s western coast.

The Aegean Islands are traditionally subdivided into seven groups, from north to south: Northeastern Aegean Islands, Sporades, Euboea, Argo-Saronic Islands, Cyclades, Dodecanese (Southern Sporades, with the exception of Kastellorizo and adjacent islets, which belong to the Eastern Mediterranean), and Crete.

Visible in the lower part of the image and amidst the islands are numerous condensation trails (or contrails), vapor trails from passing aircraft that leave criss-crossed lines in the sky.

Contrails and Snow-Capped Alps in Europe – September 22nd, 2011

45.2N 10.3E

September 22nd, 2011 Category: Clouds, Lakes, Mountains

Italy - September 21st, 2011

This image focuses on Italy, with neighbors France, Switzerland, Germany, Austria, Hungary, Slovenia and Croatia also partially visible (clockwise from left). The islands of Corsica (France, above) and Sardinia (Italy, below) can also be observed in the Mediterranean Sea.

One of the most striking features of this image are the snow-capped Alps, with lakes such as Lake Garda (center) and Lake Geneva (left) at their feet. The Adriatic Coast of Italy is lined with green sediments. Also of note are the series of condensation trails (contrails) from passing airplanes that have left a criss-crossed set of lines in the air over the sea.

Contrails Off Coast of Morocco

31.3N 12.8W

September 18th, 2011 Category: Clouds

Spain and Morocco - September 8th, 2011

This image stretches from the Strait of Gibraltar, between Spain and Morocco (upper right corner), across Morocco and Western Sahara, to the Canary Islands (left, along lower edge).

Visible off the coast of Morocco, over the waters of the Atlantic, are a series of white parallel lines. These are condensation trails, or contrails, caused by clouds forming around the exhaust streams of passing aircraft.

Limfjord Sound on Jutland Peninsula, Denmark

56.8N 8.9E

June 10th, 2011 Category: Clouds

Denmark - May 23rd, 2011

This image focuses on the upper part of the Jutland Peninsula, in Denmark. Visible by the left edge are contrails (or condensation trails) caused by passing aircraft.

The body of water near the northern shores is the Limfjord, a shallow sound that separates the island of Vendsyssel-Thy from the rest of the Jutland Peninsula.

The sound extends from Thyborøn Channel on the North Sea to Hals on the Kattegat. It is approximately 180 kilometres long and of an irregular shape with several bays, narrowings, and islands, most notably Mors.