Hygroscopic properties of water-soluble matter and humic-like organics in atmospheric fine aerosol M. Gysel, E. Weingartner, S. Nyeki, D. Paulsen, U. Baltensperger, I. Galambos, and G. Kiss Laboratory of Atmospheric Chemistry, Paul Scherrer Institut, CH-5232 Villigen, Switzerland Department of Earth and Environmental Sciences, University of Veszprém, 8201 Veszprém, Hungary Air Chemistry Group o...

Hygroscopic growth and activation of HULIS particles: experimental data and a new iterative parameterization scheme for complex aerosol particles M. Ziese, H. Wex, E. Nilsson, I. Salma, R. Ocskay, T. Hennig, A. Massling, and F. Stratmann Leibniz-Intitute for Tropospheric Research, Permoser Strasse 15, 04318 Leipzig, Germany Lund University, Department of Nuclear Physic, P.O. Box 118, 221 00 Lun...

Conifer cones represent natural, woody compliant structures which move their scales as passive responses to changes in environmental humidity. Here we report on water-driven opening and closing motions in coalified conifer cones from the Eemian Interglacial (approx. 126,000-113,000 years BP) and from the Middle Miocene (approx. 16.5 to 11.5 million years BP). These cones represent by far the ol...

Observation and appreciation of scenic landscape features, airport runway visibility, and the earth’s radiation balance are all dependent on the radiative properties of the atmosphere, which in turn are dependent on the scattering and absorption characteristics of ambient aerosols. Atmospheric scattering and, to a lesser degree, absorption characteristics are highly dependent on the amount of w...

Field measurements of hygroscopic properties and state of mixing of nucleation mode particles M. Väkevä1, M. Kulmala1, F. Stratmann2, and K. Hämeri3 1University of Helsinki, Department of Physics, Helsinki, Finland 2Institute for Tropospheric Research, Leipzig, Germany 3Finnish Institute of Occupational Health, Helsinki, Finland Received: 14 October 2001 – Accepted: 5 November 2001 – Published:...