Which of the following local wind phenomena, influenced by complex valley geometry and differential heating, commonly affects the deep river valleys of Arunachal Pradesh during clear winter mornings?

💡 Solution & Explanation

Katabatic winds are local gravity-driven winds that occur when cold, dense air near mountain summits and high slopes flows downward into the valleys during nighttime and early morning hours due to rapid radiative cooling. Anabatic winds operate in the opposite direction during daytime heating. Foehn winds are specific to European alpine systems, and land breezes operate on coastal scales rather than interior mountain valleys. Recognizing local wind patterns is important for micro-climatic studies in mountainous terrain.