Microgels in the high Arctic ocean surface microlayer and their role on Clouds and Climate


Project leader


Funding source

Swedish Research Council - Vetenskapsrådet (VR)


Project Details

Start date: 01/01/2009
End date: 31/12/2011
Funding: 3510000 SEK


Description

This project is dedicated to field investigations with post-laboratory determinations of the characteristics of biogenic aerosol particles derived from the sea-surface microlayer (SML). After three Arctic Ocean expeditions and additional recent findings from other parts of the world’s oceans these SML-derived particles have come into the focus of marine aerosol research because of their likely widespread occurrence and because of the lack of understanding concerning their generation and physicobiochemical properties. Part of this lack of understanding is due to the unstable nature und the highly complex composition of SML-derived material. An improved understanding is essential for the development of correct parameterizations available for numerical models projecting Arctic future climate. The upcoming Arctic Summer Cloud Study (ASCOS; http://www.ascos.se/) to be launched in the summer of 2008 provides a unique opportunity to use instrumentation developed at MISU to study (1) most of the sources of aerosols with emphasis on the open lead surface microlayer, (2) their chemical properties (emphasizing saccharides and proteins) as state-of-the-art bulk methods (LC/GC/MS/MS/) allow, morphology and state of mixture (TEM/SEM with X-ray) and, (3) to outline the processes involved in them becoming capable of forming cloud drops. The work will be realized within the scope of a Ph.D. thesis at Stockholm University and collaboration with other ASCOS investigators.

Last updated on 2017-31-03 at 12:58