Abstract
Tremendous progress has been made in recent years in understanding positive ion formation in the D-region. The results of direct measurements (Narcisi, 1969) of D-region ion composition can now be understood on the basis of a reaction model calculated with measured reaction rate constants (Fehsenfeld and Ferguson, 1969; Ferguson and Fehsenfeld, 1969). Similar progress has been made on explaining the D-region negative ion chemistry, and some very successful results have been obtained in recent months (Ferguson, private communication).KeywordsAerosol FormationStandard AtmosphereAtmospheric ConstituentBinary SwitchingMass Spectrometric EvidenceThese keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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