Periodic Variation of Rainfall in the Arid Region (Classic Reprint)

Periodic Variation of Rainfall in the Arid Region (Classic Reprint)

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Excerpt from Periodic Variation of Rainfall in the Arid Region The greater portion of the precipitation over the Pacific and plateau regions undoubtedly is from the warm, moisture-laden prevalent west and southwest winds that have blown across the expanse of the Pacific Ocean, becoming cooled by being forced up to the high altitudes of the Cascade, Coast, Sierra Nevada, and Rocky mountains; some, however, is due to the influence of cyclonic disturbances passing across those regions. These warm, moist winds coming in contact with the mountains near the coast are forced to an elevation where their capacity to retain moisture is reduced by the lowering of their temperatures, and precipitation results; and the higher the altitude attained the lower the temperature experienced, the less is the capacity of the air to retain moisture. The moisture that still remains in the air after crossing the Cascade and Sierra Nevada ranges is, to a great degree, precipitated upon the higher elevations and summits of the Rocky Mountains. It must be believed, however, that even after crossing the Rockies some moisture still remains in the air. Over the slope regions to the eastward of the Rocky Mountains the main source Of precipita tion is the warm, moisture-laden airs from the Gulf of Mexico, supplemented by moist winds from the Great Lakes, and the small amount remaining in the air that has crossed the Rockies; also, perhaps, some from the Atlantic Ocean. 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.show more

Product details

  • Paperback | 56 pages
  • 152 x 229 x 3mm | 86g
  • Forgotten Books
  • United States
  • English
  • , black & white illustrations
  • 0243159668
  • 9780243159666