1. The ratio between observed velocities of the wind at 50 feet and 2000 feet over the North Atlantic Ocean
2. Hdqs. U.S. Army Air Forces Oct. 1945 Historical weather maps, northern hemisphere sea level and 500 mb, Washington, D.C.
3. Hdqs. U.S. Air Weather Service Nov.-Dec. 1945, 1946 Historical weather maps, northern hemisphere sea level and 500 mb,
4. The north-east trade of the Pacific Ocean
5. The wind stress over the ocean from observations in the trades