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FP5

Validation of very high cloud droplet number concentrations in air masses transported thousands of kilometers over the ocean.

Funded under: FP5-EESD

Abstract

The microstructure of orographic clouds related to the aerosol present was studied during ACE-2. Very high cloud droplet number concentrations (almost 3000 cm-3) were observed in polluted air masses originating in Europe that had transported over the Atlantic Ocean. The validity of the measured droplet number concentrations was investigated by comparing the aerosol upstream of the cloud and cloud interstitial aerosol. Agreement was found for 88% of the causes. The validated dataset spans droplet number concentrations of 150-3000 cm-3. The results of the present study are discussed in relation to cloud droplet number concentrations previously reported in the literature.

Additional information

Authors: MARTINSSON B G, Lund University, Division of Nuclear Physics, Lund (SE);FRANK G, Lund University, Division of Nuclear Physics, Lund (SE);CEDERFELT S-I, Lund University, Division of Nuclear Physics, Lund (SE);BERG O H, Lund University, Division of Nuclear Physics, Lund (SE);MENTES B, Lund University, Division of Nuclear Physics, Lund (SE);PAPASPIROPOULOS G, Lund University, Division of Nuclear Physics, Lund (SE);SWIETLICKI E, Lund University, Division of Nuclear Physics, Lund (SE);ZHOU J, Lund University, Division of Nuclear Physics, Lund (SE);FLYNN M, UMIST, Physics Department, Manchester (GB);BOWER K N, UMIST, Physics Department, Manchester (GB);CHOULARTON T W, UMIST, Physics Department, Manchester (GB);M�KEL� J, University of Helsinki, Department of Physics, Helsinki (FI);VIRKKULA A, European Commission, Joint Research Centre, Environment Institute, Ispra (IT);VAN DINGENEN R, European Commission, Joint Research Centre, Environment Institute, Ispra (IT)
Bibliographic Reference: Article: Tellus (2000) No. 52B, pp. 801-814
Availability: Tellus (Journal)
Record Number: 200012755 / Last updated on: 2000-09-19
Category: PUBLICATION
Original language: en
Available languages: en