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TheintemationallycoordinatedMAP（MiddleAtmosphereProgram）isanattempt
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Chapter5．

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N20wasalmoststanttheperiod．They

in

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the

last

few

years．That

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December1984

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files
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altitude

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Tech．Rep．Meteorol．Res．Inst．No．181986

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improvement

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Chap．3thesunsetmixingmeasurement

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perby

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method．Those

rates

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at

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February1983throughabsorption

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N20，CH4，CFC13andpressure．

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differences

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mum，especiallyat4−15km

height．（4）It

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heightrange

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molecules

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