Sulphur isotope studies of the atmospheric aerosol at present and in the past for predicting future climate change - understanding climate regulating processes


Project leader


Funding source

Swedish Research Council - Vetenskapsrådet (VR)


Project Details

Start date: 01/01/2010
End date: 31/12/2012
Funding: 2160000 SEK


Description

This proposal concern funding for novel sulphur isotope studies (by MC-ICP-MS) of recent precipitation collected in Polar areas, of frost flowers formed on sea ice and on former precipitation retrieved through deep ice core drilling. The aim is to understand climate regulation processes relevant for present day climate change. Climate feedback mechanisms are often chains of events in several environments with different response times. By measuring the soluble components (major ions) of the former aerosol in deep ice cores, we are able to investigate the timing between changes in different environments. The sulphur isotope studies will reveal the origin of the sulphate aerosol which has several possible sources in terrestrial and marine environments. The specific aim is to investigate the regional burden of the atmospheric sulphate aerosol in different climates and to detect which environmental changes led to variations and to put this in relation to present and expected future variations in both natural and anthropogenic sulphur emissions. The proposed project will contribute to and benefit from cooperation within several VR funded projects; Highly resolved physico-chemical characterization of the Antarctic air snow interface during the Japanese-Swedish Antarctic Expedition (JASE) 2007-2008; the Green House Arctic Ocean and Climate Effects of Aerosols (GRACE) with field experiments on Svalbard; and the North Greenland Eemian Ice Drilling (NEEM) project.

Last updated on 2017-31-03 at 12:57