Quantifying the source of cloud condensation and ice nuclei from open leads in the high Arctic


Funding source

Swedish Research Council - Vetenskapsrådet (VR)


Project Details

Start date: 01/01/2017
End date: 31/12/2019
Funding: 2550000 SEK


Description

The goal of this project is to achieve a process understanding of the
role that aerosol particles generated at the ocean surface play in
governing the state of clouds in the high Arctic during summer. Aerosol
particles are required to form cloud droplets and ice crystals and
a series of key studies over the past few decades have inferred a source
of particles from open leads present in the high Arctic during summer.
In this project we will make use of a planned cruise aboard the Swedish
icebreaker Oden in 2018 to make direct, quantitative estimates
of this source using a purpose-built aerosol flux chamber. Using this we
will determine the number and mass fluxes of the aerosols produced in
the open leads as a function of particle size as well as the chemical
composition of these particles. We will also determine the efficiency of
these particles in forming ice crystals. Further, we will determine the
source of those bubbles present in the open leads thought to be
responsible for this particle source. To do so we will undertake
comprehensive depth profile measurements of bubble sizes and abundance
in the open leads. Finally, by combining all of the data measured during
the cruise we will parameterise the source of particles from the open
leads as a function of the important environmental variables found to
affect it. Improving our understanding of this local aerosol source
should greatly improve our understanding of the future Arctic response
to climate change.


Last updated on 2017-06-10 at 07:36