Abstract
The prevailing surface temperatures in summer and winter at several different stages of the last ice age, indicated at various points scattered over the Northern Hemisphere, by botanical, glaciological, marine biological, oceanographic, etc. evidence, are used to derive probable distributions of 1000−500 mbar thickness, roughly equivalent to mean temperature of the lowest 5 km of the atmosphere and indicating the general flow pattern of the atmosphere in depth. From these thermal wind patterns computation of the tendency to cyclonic and anticyclonic development is possible. Maps of this development field, taken together with the indicated steering of surface cyclones and anticyclones by the thermal winds, make it possible to sketch probable distributions of surface pressure (and, by implication, surface winds) prevailing during each of the glacial stages studied. New light is thrown on the onset of glaciation and on the regimes associated with the maximum extent of glaciation, with the Alleröd warm epoch and the Post-Alleröd cold stage when there was some readvance of the ice.
Publisher
Cambridge University Press (CUP)
Subject
General Earth and Planetary Sciences,Earth-Surface Processes,Arts and Humanities (miscellaneous)
Reference70 articles.
1. Évolution du dernier lacustre et peuplements préhistoriques aux pays bas du Tchad.;Schneider,1967
2. Sea-level changes during the last 10,000 years.;Jelgersma;“International Symposium on World Climate 8000 to O.B.C.,”,1966
3. One Thousand Centuries of Climatic Record from Camp Century on the Greenland Ice Sheet
4. Variations in the Atmospheric Radiocarbon Concentration over the Past 1300 Years
5. Temperature variations and vertical motion in the free atmosphere over Antarctica in the winter.;Kutzbach;“Polar Meteorology,”,1967
Cited by
116 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献