Condensation trail cirrus clouds often occur at cruising altitudes, between eight and 13 kilometres above sea level
Condensation trail cirrus clouds often occur at cruising altitudes, between eight and 13 kilometres above sea level
Condensation trails are formed from water vapour in conjunction with the soot particles emitted by aircraft. After a short time, ice crystals form in the cold atmosphere. Cirrus clouds can later develop from these contrails. These anthropogenic clouds, together with the contrails, are collectively referred to as ‘contrail cirrus’.
