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Show COLDEST AIR OVER EQUATOR Scientist Discovers Interesting Fact as Result of Experiments in Upper Air. Winds blow not merely along the surface of the earth but upward and downward throughout the atmosphere. They whirl about in all directions. it is impossible to construct a weather chart that will really show the directions direc-tions of the winds, for such a chart would have to be in three dimensions. Prof. Alexander McAdie of Harvard, in an article in the Gergraphical Review, Re-view, describes some jf the recent experiments ex-periments in the upper air performed by sounding balloons. The atmosphere has, roughly, two layers, the low.r called the troposphere and the upr the stratosphere. The strongest wir.;3 are found just below the stratosphere, and it would seem that pressure changes originate in this region. The stratosphere is highest ever the I equator and lowest over the poles, but its height varies with the seasons. "At the equator," says Prtfessor McAdie, "as we rise in the air the temperature continues to fall to a much greater height than in temperate latitudes. Indeed, In-deed, the lowest tefcperature is found above the equator." |
