The MIDAS campaign 2002 – studies of strong radar echoes and clouds in the Earth’s upper atmosphere

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During the Arctic summer, when the temperature in the 80-90 km height region becomes very low, cirrostratous like clouds called Noctilucent Clouds (NLC) can be observed around 82 km height. These are the highest clouds in the Earths atmosphere and are caused by low temperatures in combination with the existence of water vapour in the upper mesosphere.

During the Arctic summer, when the temperature in the 80-90 km height region becomes very low, cirrostratous like clouds called Noctilucent Clouds (NLC) can be observed around 82 km height. These are the highest clouds in the Earths atmosphere and are caused by low temperatures in combination with the existence of water vapour in the upper mesosphere.

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