How does the resultant wind affected by friction move in relation to isobars?

The resultant wind affected by friction moves at an angle to the isobars due to the combined effects of pressure gradient force and friction. In the absence of friction, winds flow parallel to isobars, driven primarily by the pressure gradient force. However, when we factor in the effects of friction—particularly near the surface of the Earth—the wind is slowed down, and the friction modifies the wind's direction.

As a result, the wind does not travel directly along the isobars but rather crosses them at an angle, typically about 30 degrees towards lower pressure. This angle illustrates the impact of surface roughness and obstacles that can alter the wind's path. Understanding this interaction is crucial for pilots, as it affects weather patterns and can influence flight operations, especially during takeoff and landing phases. Therefore, the inclination of the wind to the isobars, caused by friction, is an essential concept in meteorology and aviation.