Based on dropwindsonde soundings conducted over the ocean, surface wind speeds in a hurricane eye wall average about 90% of what they are at flight level of a reconnaissance aircraft. (Flight level is usually about 3000 m or 10,000 ft). If reconnaissance aircraft measure a wind speed of 190 km per hr (118 mph) at flight level, surface winds would be estimated at __________ km per hr. The wind shear between the surface and an altitude of 3000 m then would be ___________ km per hr per 1000 m
Tags: