Northeast And Great Lakes Wind Atlas

Author : John F. Hayford
Publisher : Forgotten Books
ISBN 13 : 9781332300440
Total Pages : 164 pages
Book Rating : 4.3/5 (4 download)

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Download or read book Effects of Winds and of Barometric Pressures on the Great Lakes (Classic Reprint) written by John F. Hayford and published by Forgotten Books. This book was released on 2015-08-05 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Effects of Winds and of Barometric Pressures on the Great Lakes No new observations were made in this investigation. The necessary observations, in great abundance, and of adequate accuracy and reliability, had already been made. The principal data used include hourly and daily observed elevations of the surface of Lake Erie and Lake Michigan - Huron at five gage stations, observed hourly wind directions and velocities at five points near these two lakes, and the observed barometric pressures twice per day at six points. The hourly elevations of the water surface which were used on Lake Erie covered 48 selected days at Buffalo and 52 selected days at Cleveland. On Lake Michigan - Huron the hourly elevations of the water surface which were used covered 34 days at Milwaukee, 42 days at Harbor Beach, and 42 days at Mackinaw. The daily mean elevations of the water surface which were used on Lake Erie covered the months August - October 1909 and June - October 1910 eight months in all. Each daily mean was the mean of 24 hourly values for that day obtained from the records of the automatic gages which had operated at Buffalo and Cleveland. The two sets of daily means were entirely separate and independent for the two stations Buffalo and Cleveland. On Lake Michigan - Huron the daily mean elevations of the water surface which were used were separate and independent series at each of the three stations, Milwaukee, Mackinaw, and Harbor Beach, each covering the months June - September 1910 and J une-september 1911 - eight months in all. Each daily mean was the mean of 24 hourly values for that day obtained from an automatic gage. The observed hourly winds which were used had been obtained from recording anemometers and wind vanes as operated at the U. S. Weather Bureau stations at Buffalo, Cleveland, Milwaukee, Port Huron (michigan) and Sault Ste. Marie (michigan). For each hour the total travel of wind in that hour was observed and the prevailing direction to the nearest of the principal points, N, ne, E, se, etc., at intervals of The hourly winds used at the stations named cover all of the months named in connection with the daily mean elevations of water surface and also all of the separate days for which hourly water elevations were used. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.