Aerosol and Cloud Microphysics Working Group Dietrich Althausen

Aerosol and Cloud Microphysics Working Group Dietrich Althausen, Andrea Riede, Herman Russchenberg, Aldo Amodeo, Susanne Crewell, Paolo Di Girolamo, Stephen Mobbs, Kim Nitschke, Dave Turner Joël Van Baelen, Volker Wulfmeyer

Cloud microphysics Aerosol properties (esp CCN) Dynamics Thermodynamics Instruments: Doppler cloud radar (35 or 95 GHz, with spectra) Raman lidar (water vapor and aerosol) Doppler lidar Microwave radiometer “Rain” radar (X, K, or S, etc. , with spectra) -- vertical Wind profiler Frequent radiosondes In situ aerosol microphysics In situ cloud microphysics LWC (z) and LWP Droplet size spectrum (z) Macrophysical properties (base & top height, fraction) Aerosol properties (CCN, number concentration, size distribution, chemical composition, etc) Vertical velocity Temperature and humidity profiles (inside and outside cloud)

ACM WG Focus will be on 2 Supersites • S 1 has all of the required measurements • S 2 is close: – Request that a microwave radiometer (perhaps from UK or from Potenza) be located there – Needs a cloud radar; perhaps the UHH radar currently listed at the S 3 site? • Request that one of the UK Doppler lidars be placed at S 2, the other on the Hornisgrinde • Possibility of in-situ aerosol observations (esp CCN spectra) on the Hornisgride? • Chemical composition measurements from UK considered important • BAE-146 in-situ observations will be critical – Flight pattern includes legs in the aerosol layer below cloud and multiple penetrations at different altitudes in the cloud • Would like to have one ACM representative in the operations center for daily planning