Saharan dust and ice nuclei over Central Europe

Klein, Holger; Ničković, Slobodan; Haunold, W.; Bundke, Ulrich; Nillius, B.; Ebert, Martin; Weinbruch, Stephan; Schuetz, L.; Levin, Zev; Barrie, Leonard A.; Bingemer, Heinz

doi:10.5194/acpd-10-14993-2010

Cited by 28 publications

(34 citation statements)

References 41 publications

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“…The average contribution of biological particles to heterogeneous ice nucleation in mixed-phase clouds (integrated over all temperature regions in the troposphere) was calculated to be only 0.00001%, with an uppermost estimate of 0.6%. Instead, atmospheric ice nucleation was found to be dominated by mineral dust, which is also in agreement with recent observations (Choi et al, 2010;Klein et al, 2010). The contribution of biological particles to ice nucleation in relatively warm cloud layers (above (108C) might be higher but was not quantified in these studies.…”

Section: 32supporting

confidence: 80%

Primary biological aerosol particles in the atmosphere: a review

Després¹,

Huffman

Burrows³

et al. 2012

Tellus B: Chemical and Physical Meteorology

1,159

1,114

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A B S T R A C T Atmospheric aerosol particles of biological origin are a very diverse group of biological materials and structures, including microorganisms, dispersal units, fragments and excretions of biological organisms. In recent years, the impact of biological aerosol particles on atmospheric processes has been studied with increasing intensity, and a wealth of new information and insights has been gained. This review outlines the current knowledge on major categories of primary biological aerosol particles (PBAP): bacteria and archaea, fungal spores and fragments, pollen, viruses, algae and cyanobacteria, biological crusts and lichens and others like plant or animal fragments and detritus. We give an overview of sampling methods and physical, chemical and biological techniques for PBAP analysis (cultivation, microscopy, DNA/RNA analysis, chemical tracers, optical and mass spectrometry, etc.). Moreover, we address and summarise the current understanding and open questions concerning the influence of PBAP on the atmosphere and climate, i.e. their optical properties and their ability to act as ice nuclei (IN) or cloud condensation nuclei (CCN). We suggest that the following research activities should be pursued in future studies of atmospheric biological aerosol particles: (1) develop efficient and reliable analytical techniques for the identification and quantification of PBAP; (2) apply advanced and standardised techniques to determine the abundance and diversity of PBAP and their seasonal variation at regional and global scales (atmospheric biogeography); (3) determine the emission rates, optical properties, IN and CCN activity of PBAP in field measurements and laboratory experiments; (4) use field and laboratory data to constrain numerical models of atmospheric transport, transformation and climate effects of PBAP.

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Section: 32supporting

confidence: 80%

Primary biological aerosol particles in the atmosphere: a review

Després¹,

Huffman

Burrows³

et al. 2012

Tellus B: Chemical and Physical Meteorology

1,159

1,114

View full text Add to dashboard Cite

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“…In contrast, numbers of IN active at (188C were clearly enhanced at The Taunus Observatory (825 m.a.s.l.) in Germany (Klein et al, 2010) and at (318C at Jungfraujoch (Chou et al, 2011) during Sahara dust events, and at temperatures below (128C during dust events in the eastern Mediterranean (Ardon-Dryer and Levin, 2014). Contrast is not contradiction.…”

Section: Resultsmentioning

confidence: 99%

Atmospheric ice nuclei at the high-altitude observatory Jungfraujoch, Switzerland

Conen

Rodrı́guez

Hüglin

et al. 2015

Tellus B: Chemical and Physical Meteorology

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“…The (Klein et al, 2010a). For the measurement of the ice nuclei number concentration, atmospheric aerosol was first collected on an inert substrate, which was later analyzed in the laboratory for ice nuclei.…”

Section: Measurements Of Ice Nuclei and Of Aerosol Physical Propertiesmentioning

confidence: 99%

Saharan dust and ice nuclei over Central Europe

et al. 2010

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Abstract. Surface measurements of aerosol and ice nuclei (IN) at a Central European mountain site during an episode of dust transport from the Sahara are presented. Ice nuclei were sampled by electrostatic precipitation on silicon wafers and were analyzed in an isothermal static vapor diffusion chamber. The transport of mineral dust is simulated by the Eulerian regional dust model DREAM. Ice nuclei and mineral dust are significantly correlated, in particular IN number concentration and aerosol surface area. The ice nucleating characteristics of the aerosol as analyzed with respect to temperature and supersaturation are similar during the dust episode than during the course of the year. This suggests that dust may be a main constituent of ice nucleating aerosols in Central Europe.

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Saharan dust and ice nuclei over Central Europe

Cited by 28 publications

References 41 publications

Primary biological aerosol particles in the atmosphere: a review

Primary biological aerosol particles in the atmosphere: a review

Atmospheric ice nuclei at the high-altitude observatory Jungfraujoch, Switzerland

Saharan dust and ice nuclei over Central Europe

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