Download PDF by Christian E Junge: Air Chemistry and Radioactivity

By Christian E Junge

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4 OZONE 47 is no chemical destruction either. The variation with season and latitude in these layers must then be considered in terms of a reservoir whose ozone balance is controlled in a rather complex manner by the varying rates of influx and outflow. The source is obviously the layer above 25 km where ozone is readily formed. The sink is the troposphere where ozone is chemically destroyed. Up to the present time no attempt was made to explain the observed profile variations in quantitative terms.

They clearly show an ozone-free area of several kilometers depth above the tropical tropopause. This seems to support the concept of slowly ascending air motion across the tropical tropopause as suggested by Brewer (1949)) but there is reluctance to accept such circulation on meteorological grounds and it is in disagreement with profiles of Srg0 and Wl85 (see section on artificial radioactivity). Ramanathan and Kulkarni (1960) discuss a large number of Umkehr data over a wide range of latitudes.

9. Carbon cycle of the atmosphere and the ocean, essentially according to Craig (1957). G denotes the global average carbon density in g/cme for the various reservoirs, atmosphere (a), mixed layer ( m ) , deep sea (d), plants on land ( b ) , and humus ( h ) . T is the residence time in exchange with the respective reservoirs. The height of the columns is proportional t o the carbon density. Carbon in sediments, 28,500 C,; organic carbonin sediments, 10,600 C,. The carbon cycle is an outstanding example of the succesi ful application of isotopic methods to geophysical problems.

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Air Chemistry and Radioactivity by Christian E Junge


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