Articles | Volume 10, issue 22
Atmos. Chem. Phys., 10, 10987–10995, 2010

Special issue: European Integrated Project on Aerosol-Cloud-Climate and Air...

Atmos. Chem. Phys., 10, 10987–10995, 2010

  24 Nov 2010

24 Nov 2010

Aerosol-cloud interaction determined by both in situ and satellite data over a northern high-latitude site

H. Lihavainen1, V.-M. Kerminen1, and L. A. Remer2 H. Lihavainen et al.
  • 1Finnish Meteorological Institute, P.O. Box 503, 00101, Helsinki, Finland
  • 2NASA Goddard Space Flight Center, Greenbelt, MD, 20771, USA

Abstract. The first aerosol indirect effect over a clean, northern high-latitude site was investigated by determining the aerosol cloud interaction (ACI) using three different approaches; ground-based in situ measurements, combined ground-based in situ measurements and satellite retrievals and using only satellite retrievals. The obtained values of ACI were highest for in situ ground-based data, clearly lower for combined ground-based and satellite data, and lowest for data relying solely on satellite retrievals. One of the key findings of this study was the high sensitivity of ACI to the definition of the aerosol burden. We showed that at least a part of the variability in ACI can be explained by how different investigators have related different cloud properties to "aerosol burden".

Final-revised paper