What is the temperature range for clear icing?

Clear icing typically occurs when supercooled water droplets come into contact with an aircraft's surface and freeze upon impact. The temperature range associated with clear icing is primarily between 0°C and -10°C. This is the temperature range where the conditions are most conducive to the formation of clear ice, which is characterized by its transparent appearance and glossy finish.

In this range, supercooled liquid water droplets are prevalent, and when these droplets freeze quickly upon contact with the cold surface of an aircraft, they form clear ice. The presence of supercooled water at temperatures just above freezing allows for the formation of ice that is particularly dangerous, as it adheres strongly to surfaces, creating significant challenges for aircraft control and performance.

The other choices do not accurately capture the conditions under which clear icing typically occurs. For instance, temperatures above 0°C would not support the formation of ice. Likewise, temperatures below -10°C can lead to different types of icing, such as rime ice, which forms under different physical processes and temperature conditions.