Why is the Tibetan plateau so cold?

The Tibetan Plateau is so cold primarily due to its high elevation, as it is the world's highest and largest plateau, averaging about 4,500 meters (14,800 feet) above sea level. This altitude results in lower atmospheric pressure and reduced temperatures. Additionally, the region experiences a continental climate, with long, harsh winters and limited sunlight. The surrounding mountain ranges also create a barrier that influences weather patterns, further contributing to the plateau's cold conditions.