Search Results - "Kulmala, Markku"
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Atmospheric chemistry: China’s choking cocktail
Published in Nature (London) (22-10-2015)“…Cleaning up city and indoor air will require a deeper understanding of the unprecedented chemical reactions between pollutants, says Markku Kulmala…”
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Atmospheric new particle formation from sulfuric acid and amines in a Chinese megacity
Published in Science (American Association for the Advancement of Science) (20-07-2018)“…Atmospheric new particle formation (NPF) is an important global phenomenon that is nevertheless sensitive to ambient conditions. According to both observation…”
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Atmospheric new particle formation and growth: review of field observations
Published in Environmental research letters (27-09-2018)“…This review focuses on the observed characteristics of atmospheric new particle formation (NPF) in different environments of the global troposphere. After a…”
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Molecular identification of organic vapors driving atmospheric nanoparticle growth
Published in Nature communications (30-09-2019)“…Particles formed in the atmosphere via nucleation provide about half the number of atmospheric cloud condensation nuclei, but in many locations, this process…”
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Aerosol-boundary-layer-monsoon interactions amplify semi-direct effect of biomass smoke on low cloud formation in Southeast Asia
Published in Nature communications (05-11-2021)“…Low clouds play a key role in the Earth-atmosphere energy balance and influence agricultural production and solar-power generation. Smoke aloft has been found…”
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Highly Oxygenated Organic Molecules (HOM) from Gas-Phase Autoxidation Involving Peroxy Radicals: A Key Contributor to Atmospheric Aerosol
Published in Chemical reviews (27-03-2019)“…Highly oxygenated organic molecules (HOM) are formed in the atmosphere via autoxidation involving peroxy radicals arising from volatile organic compounds…”
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Particulate matter pollution over China and the effects of control policies
Published in The Science of the total environment (15-04-2017)“…China is one of the regions with highest PM2.5 concentration in the world. In this study, we review the spatio-temporal distribution of PM2.5 mass…”
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Ultrafine particles in cities
Published in Environment international (01-05-2014)“…Ultrafine particles (UFPs; diameter less than 100nm) are ubiquitous in urban air, and an acknowledged risk to human health. Globally, the major source for…”
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Measurement of the nucleation of atmospheric aerosol particles
Published in Nature protocols (01-09-2012)“…The formation of new atmospheric aerosol particles and their subsequent growth have been observed frequently at various locations all over the world. The…”
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Hydroxyl radical-induced formation of highly oxidized organic compounds
Published in Nature communications (02-12-2016)“…Explaining the formation of secondary organic aerosol is an intriguing question in atmospheric sciences because of its importance for Earth’s radiation budget…”
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Significance of the organic aerosol driven climate feedback in the boreal area
Published in Nature communications (24-09-2021)“…Aerosol particles cool the climate by scattering solar radiation and by acting as cloud condensation nuclei. Higher temperatures resulting from increased…”
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Production of extremely low volatile organic compounds from biogenic emissions: Measured yields and atmospheric implications
Published in Proceedings of the National Academy of Sciences - PNAS (09-06-2015)“…Oxidation products of monoterpenes and isoprene have a major influence on the global secondary organic aerosol (SOA) burden and the production of atmospheric…”
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Rapid growth of new atmospheric particles by nitric acid and ammonia condensation
Published in Nature (London) (01-05-2020)“…A list of authors and their affiliations appears at the end of the paper New-particle formation is a major contributor to urban smog 1 , 2 , but how it occurs…”
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A global observational analysis to understand changes in air quality during exceptionally low anthropogenic emission conditions
Published in Environment international (01-12-2021)“…[Display omitted] •A global observational analysis of air quality changes due to COVID-19 is presented.•NO2 decreased with heterogeneous changes in O3 and…”
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The role of low-volatility organic compounds in initial particle growth in the atmosphere
Published in Nature (London) (26-05-2016)“…The growth of nucleated organic particles has been investigated in controlled laboratory experiments under atmospheric conditions; initial growth is driven by…”
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Ion-induced nucleation of pure biogenic particles
Published in Nature (London) (26-05-2016)“…Aerosol particles can form in the atmosphere by nucleation of highly oxidized biogenic vapours in the absence of sulfuric acid, with ions from Galactic cosmic…”
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A large source of low-volatility secondary organic aerosol
Published in Nature (London) (27-02-2014)“…The link between biogenic volatile organic compounds in the atmosphere and their conversion to aerosol particles is unclear, but a direct reaction pathway is…”
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Exploring the regional pollution characteristics and meteorological formation mechanism of PM2.5 in North China during 2013–2017
Published in Environment international (01-01-2020)“…[Display omitted] •The domain-averaged PM2.5 in North China decreased significantly from 2013 to 2017.•Firstly established two automatic algorithms to identify…”
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Role of iodine oxoacids in atmospheric aerosol nucleation
Published in Science (American Association for the Advancement of Science) (05-02-2021)“…Iodic acid (HIO ) is known to form aerosol particles in coastal marine regions, but predicted nucleation and growth rates are lacking. Using the CERN CLOUD…”
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Rapid Autoxidation Forms Highly Oxidized RO2 Radicals in the Atmosphere
Published in Angewandte Chemie International Edition (22-12-2014)“…Gas‐phase oxidation routes of biogenic emissions, mainly isoprene and monoterpenes, in the atmosphere are still the subject of intensive research with special…”
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