BAECC Biogenic Aerosols - Effects on Clouds and Climate

Technical Report · Sun Nov 01 04:00:00 EST 2015

DOI:https://doi.org/10.2172/1234819· OSTI ID:1234819

Petäjä, Tuukka ^[1]; Moisseev, Dmitri ^[2]; Sinclair, Victoria ^[2]; O'Connor, Ewan J. ^[3]; Manninen, Antti J. ^[2]; Levula, Janne ^[2]; Väänänen, Riikka ^[2]; Heikkinen, Liine ^[2]; Äijälä, Mikko ^[2]; Aalto, Juho ^[2]; Bäck, Jaana ^[4]

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1. Univ. of Helsinki (Finland); Department of Physics, University of Helsinki
2. Univ. of Helsinki (Finland)
3. Finnish Meteorological Institute, Helsinki (Finland)
4. University of Helsinki, Finland

“Biogenic Aerosols - Effects on Clouds and Climate (BAECC)”, featured the U.S. Department of Energy’s Atmospheric Radiation Measurement (ARM) Program’s 2nd Mobile Facility (AMF2) in Hyytiälä, Finland. It operated for an 8-month intensive measurement campaign from February to September 2014. The main research goal was to understand the role of biogenic aerosols in cloud formation. One of the reasons to perform BAECC study in Hyytiälä was the fact that it hosts SMEAR-II (Station for Measuring Forest Ecosystem-Atmosphere Relations), which is one of the world’s most comprehensive surface in-situ observation sites in a boreal forest environment. The station has been measuring atmospheric aerosols, biogenic emissions and an extensive suite of parameters relevant to atmosphere-biosphere interactions continuously since 1996. The BAECC enables combining vertical profiles from AMF2 with surface-based in-situ SMEAR-II observations and allows the processes at the surface to be directly related to processes occurring throughout the entire tropospheric column. With the inclusion of extensive surface precipitation measurements, and intensive observation periods involving aircraft flights and novel radiosonde launches, the complementary observations of AMF2 and SMEAR-II provide a unique opportunity for investigating aerosol-cloud interactions, and cloud-to-precipitation processes. The BAECC dataset will initiate new opportunities for evaluating and improving models of aerosol sources and transport, cloud microphysical processes, and boundary-layer structures.

• Research Organization: Univ. of Helsinki (Finland)
• Sponsoring Organization: USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23)
• DOE Contract Number: SC0010711
• OSTI ID: 1234819
• Report Number(s): DOE-UHEL--SC0010711
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES