An Arctic CCN-limited cloud-aerosol regime

T. Mauritsen, J. Sedlar, M. Tjernstrom, C. Leck, M. Martin, M. Shupe, Staffan Sjögren, B. Sierau, P. O. G. Persson, I. M. Brooks, Erik Swietlicki

Research output: Contribution to journalArticlepeer-review

123 Citations (SciVal)

Abstract

On average, airborne aerosol particles cool the Earth's surface directly by absorbing and scattering sunlight and indirectly by influencing cloud reflectivity, life time, thickness or extent. Here we show that over the central Arctic Ocean, where there is frequently a lack of aerosol particles upon which clouds may form, a small increase in aerosol loading may enhance cloudiness thereby likely causing a climatologically significant warming at the ice-covered Arctic surface. Under these low concentration conditions cloud droplets grow to drizzle sizes and fall, even in the absence of collisions and coalescence, thereby diminishing cloud water. Evidence from a case study suggests that interactions between aerosol, clouds and precipitation could be responsible for attaining the observed low aerosol concentrations.
Original languageEnglish
Pages (from-to)165-173
JournalAtmospheric Chemistry and Physics
Volume11
Issue number1
DOIs
Publication statusPublished - 2011

Bibliographical note

The information about affiliations in this record was updated in December 2015.
The record was previously connected to the following departments: Nuclear Physics (Faculty of Technology) (011013007)

Subject classification (UKÄ)

  • Subatomic Physics

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