| ON ICE FORMING NUCLEI |
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| 作者姓名： | J.Rosinski P.L.Haagenson C.T.Nngamoto G.Morgan |
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| 作者单位： | National Center for Atmospheric Research Boulder，Colorado 80307，USA，National Center for Atmospheric Research，Boulder，Colorado 80307，USA，National Oceanic and Atmospheric Administration，Boulder，Colorado 80303，USA，Ente Regionale per 1o Svilluppo dell' Agricoltura，Gorizia，Italy |
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| 摘 要： | Cloud condensation nuclei(CCN)constitute a reservoir of latent ice-forming nuclei(IFN)active by condensation-followed-by-freezing and by sorption.Two classes of aerosol particles active as IFN by sorption werefound.The first produces IFN concentrations which are dependent on temperature only.The IFN concen-tration consecutively increases with lowering of temperature and does not respond to the increasing partialwater vapor pressure.The second produces IFN concentrations which are dependent on partial water vaporpressure only,The IFN concentration consecutively decreases with decreasing of the partial water vapor pres-sure that takes place with the lowering temperature.Sulfates(mostly ammonium sulfate)constitute an integral part of IFN active by condensation-followed-by-freezing and by sorption.Backward isentropic air parcel trajectories linked polluted air rich in sulfates andclean air with high and low concentrations of IFN active by condensation-followed-by-freezing at-19.7℃ andS_w=0.1%.The experiments were performed in a dynamic filter processing chamber with aerosol particles collectedon membrane filters.
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ON ICE FORMING NUCLEI |
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| J.Rosinski,P.L.Haagenson,C.T.Nngamoto,G.Morgan.ON ICE FORMING NUCLEI[J].Acta Meteorologica Sinica,1991(4). |
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| Authors: | JRosinski PLHaagenson National Center for Atmospheric Research Boulder Colorado USACTNagamoto National Oceanic and Atmospheric Administration Boulder Colorado USAGMorgan Ente Regionale per lo Svilluppo dell'Agricoltura Gorizia Italy |
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| Institution: | J.Rosinski P.L.Haagenson,National Center for Atmospheric Research,Boulder,Colorado 80307,USAC.T.Nagamoto National Oceanic and Atmospheric Administration,Boulder,Colorado 80303,USAG.Morgan Ente Regionale per lo Svilluppo dell'Agricoltura,Gorizia,Italy |
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| Abstract: | |
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| Keywords: | cloud condensation nuclei sorption ice-forming nuclei ice-forming nuclei active by condensation-followed-by-freezing |
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