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Akademický článek

Isolation of subpollen particles (SPPs) of birch: SPPs are potential carriers of ice nucleating macromolecules

Autor: J. Burkart, J. Gratzl, T. M. Seifried, P. Bieber, H. Grothe

Publikováno v: Biogeosciences, Vol 18, Pp 5751-5765 (2021)

Within the last years pollen grains have gained increasing attention due to their cloud-forming potential. Especially the discovery that ice nucleating macromolecules (INMs) or subpollen particles (SPPs) obtained from pollen grains are able to initia

Externí odkaz: https://doaj.org/article/2c281762354e4d66a6de91aae76182b0

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Akademický článek

Chemical composition and source attribution of sub-micrometre aerosol particles in the summertime Arctic lower troposphere

Autor: F. Köllner, J. Schneider, M. D. Willis, H. Schulz, D. Kunkel, H. Bozem, P. Hoor, T. Klimach, F. Helleis, J. Burkart, W. R. Leaitch, A. A. Aliabadi, J. P. D. Abbatt, A. B. Herber, S. Borrmann

Publikováno v: Atmospheric Chemistry and Physics, Vol 21, Pp 6509-6539 (2021)

Aerosol particles impact the Arctic climate system both directly and indirectly by modifying cloud properties, yet our understanding of their vertical distribution, chemical composition, mixing state, and sources in the summertime Arctic is incomplet

Externí odkaz: https://doaj.org/article/6406924080c649d9a2688ac372c9bf23

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Akademický článek

Vertical profiles of light absorption and scattering associated with black carbon particle fractions in the springtime Arctic above 79° N

Autor: W. R. Leaitch, J. K. Kodros, M. D. Willis, S. Hanna, H. Schulz, E. Andrews, H. Bozem, J. Burkart, P. Hoor, F. Kolonjari, J. A. Ogren, S. Sharma, M. Si, K. von Salzen, A. K. Bertram, A. Herber, J. P. D. Abbatt, J. R. Pierce

Publikováno v: Atmospheric Chemistry and Physics, Vol 20, Pp 10545-10563 (2020)

Despite the potential importance of black carbon (BC) for radiative forcing of the Arctic atmosphere, vertically resolved measurements of the particle light scattering coefficient (σsp) and light absorption coefficient (σap) in the springtime Arcti

Externí odkaz: https://doaj.org/article/d3ea359ec1ad4c66b3e04b6e8e9b1aa5

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Akademický článek

Characterization of transport regimes and the polar dome during Arctic spring and summer using in situ aircraft measurements

Autor: H. Bozem, P. Hoor, D. Kunkel, F. Köllner, J. Schneider, A. Herber, H. Schulz, W. R. Leaitch, A. A. Aliabadi, M. D. Willis, J. Burkart, J. P. D. Abbatt

Publikováno v: Atmospheric Chemistry and Physics, Vol 19, Pp 15049-15071 (2019)

The springtime composition of the Arctic lower troposphere is to a large extent controlled by the transport of midlatitude air masses into the Arctic. In contrast, precipitation and natural sources play the most important role during summer. Within t

Externí odkaz: https://doaj.org/article/68338ad1645843c4b73e4254f498dc34

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Akademický článek

Arctic marine secondary organic aerosol contributes significantly to summertime particle size distributions in the Canadian Arctic Archipelago

Autor: B. Croft, R. V. Martin, W. R. Leaitch, J. Burkart, R. Y.-W. Chang, D. B. Collins, P. L. Hayes, A. L. Hodshire, L. Huang, J. K. Kodros, A. Moravek, E. L. Mungall, J. G. Murphy, S. Sharma, S. Tremblay, G. R. Wentworth, M. D. Willis, J. P. D. Abbatt, J. R. Pierce

Publikováno v: Atmospheric Chemistry and Physics, Vol 19, Pp 2787-2812 (2019)

Summertime Arctic aerosol size distributions are strongly controlled by natural regional emissions. Within this context, we use a chemical transport model with size-resolved aerosol microphysics (GEOS-Chem-TOMAS) to interpret measurements of aerosol

Externí odkaz: https://doaj.org/article/8d805a5f46e8493eb75da09e1bdabf10

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Akademický článek

Overview paper: New insights into aerosol and climate in the Arctic

Autor: J. P. D. Abbatt, W. R. Leaitch, A. A. Aliabadi, A. K. Bertram, J.-P. Blanchet, A. Boivin-Rioux, H. Bozem, J. Burkart, R. Y. W. Chang, J. Charette, J. P. Chaubey, R. J. Christensen, A. Cirisan, D. B. Collins, B. Croft, J. Dionne, G. J. Evans, C. G. Fletcher, M. Galí, R. Ghahremaninezhad, E. Girard, W. Gong, M. Gosselin, M. Gourdal, S. J. Hanna, H. Hayashida, A. B. Herber, S. Hesaraki, P. Hoor, L. Huang, R. Hussherr, V. E. Irish, S. A. Keita, J. K. Kodros, F. Köllner, F. Kolonjari, D. Kunkel, L. A. Ladino, K. Law, M. Levasseur, Q. Libois, J. Liggio, M. Lizotte, K. M. Macdonald, R. Mahmood, R. V. Martin, R. H. Mason, L. A. Miller, A. Moravek, E. Mortenson, E. L. Mungall, J. G. Murphy, M. Namazi, A.-L. Norman, N. T. O'Neill, J. R. Pierce, L. M. Russell, J. Schneider, H. Schulz, S. Sharma, M. Si, R. M. Staebler, N. S. Steiner, J. L. Thomas, K. von Salzen, J. J. B. Wentzell, M. D. Willis, G. R. Wentworth, J.-W. Xu, J. D. Yakobi-Hancock

Publikováno v: Atmospheric Chemistry and Physics, Vol 19, Pp 2527-2560 (2019)

Motivated by the need to predict how the Arctic atmosphere will change in a warming world, this article summarizes recent advances made by the research consortium NETCARE (Network on Climate and Aerosols: Addressing Key Uncertainties in Remote Canadi

Externí odkaz: https://doaj.org/article/bfdd9f7dac5c49239d37a9bb507d7728

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Akademický článek

High Arctic aircraft measurements characterising black carbon vertical variability in spring and summer

Autor: H. Schulz, M. Zanatta, H. Bozem, W. R. Leaitch, A. B. Herber, J. Burkart, M. D. Willis, D. Kunkel, P. M. Hoor, J. P. D. Abbatt, R. Gerdes

Publikováno v: Atmospheric Chemistry and Physics, Vol 19, Pp 2361-2384 (2019)

The vertical distribution of black carbon (BC) particles in the Arctic atmosphere is one of the key parameters controlling their radiative forcing and thus role in Arctic climate change. This work investigates the presence and properties of these lig

Externí odkaz: https://doaj.org/article/cbda16c167bf40faaa5e7a8e6d600d11

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Akademický článek

Aircraft-based measurements of High Arctic springtime aerosol show evidence for vertically varying sources, transport and composition

Autor: M. D. Willis, H. Bozem, D. Kunkel, A. K. Y. Lee, H. Schulz, J. Burkart, A. A. Aliabadi, A. B. Herber, W. R. Leaitch, J. P. D. Abbatt

Publikováno v: Atmospheric Chemistry and Physics, Vol 19, Pp 57-76 (2019)

The sources, chemical transformations and removal mechanisms of aerosol transported to the Arctic are key factors that control Arctic aerosol–climate interactions. Our understanding of sources and processes is limited by a lack of vertically res

Externí odkaz: https://doaj.org/article/505c498c155545a7aba4897df0e145a5

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Akademický článek

Birch leaves and branches as a source of ice-nucleating macromolecules

Autor: L. Felgitsch, P. Baloh, J. Burkart, M. Mayr, M. E. Momken, T. M. Seifried, P. Winkler, D. G. Schmale III, H. Grothe

Publikováno v: Atmospheric Chemistry and Physics, Vol 18, Pp 16063-16079 (2018)

Birch pollen are known to release ice-nucleating macromolecules (INM), but little is known about the production and release of INM from other parts of the tree. We examined the ice nucleation activity of samples from 10 different birch trees (Betu

Externí odkaz: https://doaj.org/article/23f9aa49ad7c48bd89b0e994656826a2

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Akademický článek

Size-resolved mixing state of black carbon in the Canadian high Arctic and implications for simulated direct radiative effect

Autor: J. K. Kodros, S. J. Hanna, A. K. Bertram, W. R. Leaitch, H. Schulz, A. B. Herber, M. Zanatta, J. Burkart, M. D. Willis, J. P. D. Abbatt, J. R. Pierce

Publikováno v: Atmospheric Chemistry and Physics, Vol 18, Pp 11345-11361 (2018)

Transport of anthropogenic aerosol into the Arctic in the spring months has the potential to affect regional climate; however, modeling estimates of the aerosol direct radiative effect (DRE) are sensitive to uncertainties in the mixing state of bl

Externí odkaz: https://doaj.org/article/ae875df31e9b4fb1a5f7c9456951b33a

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