Annual variability of ice-nucleating particle concentrations at different Arctic locations
<p>Number concentrations of ice-nucleating particles (<span class="inline-formula"><i>N</i><sub>INP</sub></span>) in the Arctic were derived from ground-based filter samples. Examined samples had been collected in Alert (Nunavut, northern Canadian...
| Main Authors: | , , , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2019-04-01
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| Series: | Atmospheric Chemistry and Physics |
| Online Access: | https://www.atmos-chem-phys.net/19/5293/2019/acp-19-5293-2019.pdf |
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| author | H. Wex L. Huang W. Zhang H. Hung R. Traversi S. Becagli R. J. Sheesley C. E. Moffett T. E. Barrett R. Bossi H. Skov A. Hünerbein J. Lubitz M. Löffler M. Löffler O. Linke M. Hartmann P. Herenz P. Herenz F. Stratmann |
| author_facet | H. Wex L. Huang W. Zhang H. Hung R. Traversi S. Becagli R. J. Sheesley C. E. Moffett T. E. Barrett R. Bossi H. Skov A. Hünerbein J. Lubitz M. Löffler M. Löffler O. Linke M. Hartmann P. Herenz P. Herenz F. Stratmann |
| author_sort | H. Wex |
| collection | DOAJ |
| description | <p>Number
concentrations of ice-nucleating particles (<span class="inline-formula"><i>N</i><sub>INP</sub></span>) in the Arctic
were derived from ground-based filter samples. Examined samples had been
collected in Alert (Nunavut, northern Canadian archipelago on Ellesmere
Island), Utqiaġvik, formerly known as Barrow (Alaska), Ny-Ålesund
(Svalbard), and at the Villum Research Station (VRS; northern Greenland). For
the former two stations, examined filters span a full yearly cycle. For VRS,
10 weekly samples, mostly from different months of one year, were included.
Samples from Ny-Ålesund were collected during the months from March until
September of one year. At all four stations, highest concentrations were
found in the summer months from roughly June to September. For those stations
with sufficient data coverage, an annual cycle can be seen. The spectra of
<span class="inline-formula"><i>N</i><sub>INP</sub></span> observed at the highest temperatures, i.e., those obtained
for summer months, showed the presence of INPs that nucleate ice up to
<span class="inline-formula">−5</span> <span class="inline-formula"><sup>∘</sup></span>C. Although the nature of these highly ice-active INPs could
not be determined in this study, it often has been described in the
literature that ice activity observed at such high temperatures originates
from the presence of ice-active material of biogenic origin. Spectra observed
at the lowest temperatures, i.e., those derived for winter months, were on
the lower end of the respective values from the literature on Arctic INPs or
INPs from midlatitude continental sites, to which a comparison is presented
herein. An analysis concerning the origin of INPs that were ice active at
high temperatures was carried out using back trajectories and satellite
information. Both terrestrial locations in the Arctic and the adjacent sea
were found to be possible source areas for highly active INPs.</p> |
| first_indexed | 2024-12-23T11:51:47Z |
| format | Article |
| id | doaj.art-a8fe978d7d27438fa12c08b5bc51a34c |
| institution | Directory Open Access Journal |
| issn | 1680-7316 1680-7324 |
| language | English |
| last_indexed | 2024-12-23T11:51:47Z |
| publishDate | 2019-04-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Atmospheric Chemistry and Physics |
| spelling | doaj.art-a8fe978d7d27438fa12c08b5bc51a34c2022-12-21T17:48:11ZengCopernicus PublicationsAtmospheric Chemistry and Physics1680-73161680-73242019-04-01195293531110.5194/acp-19-5293-2019Annual variability of ice-nucleating particle concentrations at different Arctic locationsH. Wex0L. Huang1W. Zhang2H. Hung3R. Traversi4S. Becagli5R. J. Sheesley6C. E. Moffett7T. E. Barrett8R. Bossi9H. Skov10A. Hünerbein11J. Lubitz12M. Löffler13M. Löffler14O. Linke15M. Hartmann16P. Herenz17P. Herenz18F. Stratmann19Experimental Aerosol and Cloud Microphysics, Leibniz Institute for Tropospheric Research (TROPOS), Leipzig, GermanyClimate Research Division, Atmospheric Science & Technology Directorate, STB, Environment & Climate Change Canada, Toronto, CanadaClimate Research Division, Atmospheric Science & Technology Directorate, STB, Environment & Climate Change Canada, Toronto, CanadaAir Quality Processes Research Section, Environment & Climate Change Canada, Toronto, CanadaDepartment of Chemistry “Ugo Schiff”, University of Florence, Florence, ItalyDepartment of Chemistry “Ugo Schiff”, University of Florence, Florence, ItalyDepartment of Environmental Science, Baylor University, Waco, Texas, USADepartment of Environmental Science, Baylor University, Waco, Texas, USADepartment of Environmental Science, Baylor University, Waco, Texas, USADepartment of Environmental Science, iCLIMATE, Aarhus University, Roskilde, DenmarkDepartment of Environmental Science, iCLIMATE, Aarhus University, Roskilde, DenmarkExperimental Aerosol and Cloud Microphysics, Leibniz Institute for Tropospheric Research (TROPOS), Leipzig, GermanyExperimental Aerosol and Cloud Microphysics, Leibniz Institute for Tropospheric Research (TROPOS), Leipzig, GermanyExperimental Aerosol and Cloud Microphysics, Leibniz Institute for Tropospheric Research (TROPOS), Leipzig, Germanynow at: Deutscher Wetterdienst, Zentrum für Agrarmeteorologische Forschung Braunschweig (ZAMF), Braunschweig, GermanyExperimental Aerosol and Cloud Microphysics, Leibniz Institute for Tropospheric Research (TROPOS), Leipzig, GermanyExperimental Aerosol and Cloud Microphysics, Leibniz Institute for Tropospheric Research (TROPOS), Leipzig, GermanyExperimental Aerosol and Cloud Microphysics, Leibniz Institute for Tropospheric Research (TROPOS), Leipzig, Germanynow at: Senate Department for the Environment, Transport and Climate Protection, Berlin, GermanyExperimental Aerosol and Cloud Microphysics, Leibniz Institute for Tropospheric Research (TROPOS), Leipzig, Germany<p>Number concentrations of ice-nucleating particles (<span class="inline-formula"><i>N</i><sub>INP</sub></span>) in the Arctic were derived from ground-based filter samples. Examined samples had been collected in Alert (Nunavut, northern Canadian archipelago on Ellesmere Island), Utqiaġvik, formerly known as Barrow (Alaska), Ny-Ålesund (Svalbard), and at the Villum Research Station (VRS; northern Greenland). For the former two stations, examined filters span a full yearly cycle. For VRS, 10 weekly samples, mostly from different months of one year, were included. Samples from Ny-Ålesund were collected during the months from March until September of one year. At all four stations, highest concentrations were found in the summer months from roughly June to September. For those stations with sufficient data coverage, an annual cycle can be seen. The spectra of <span class="inline-formula"><i>N</i><sub>INP</sub></span> observed at the highest temperatures, i.e., those obtained for summer months, showed the presence of INPs that nucleate ice up to <span class="inline-formula">−5</span> <span class="inline-formula"><sup>∘</sup></span>C. Although the nature of these highly ice-active INPs could not be determined in this study, it often has been described in the literature that ice activity observed at such high temperatures originates from the presence of ice-active material of biogenic origin. Spectra observed at the lowest temperatures, i.e., those derived for winter months, were on the lower end of the respective values from the literature on Arctic INPs or INPs from midlatitude continental sites, to which a comparison is presented herein. An analysis concerning the origin of INPs that were ice active at high temperatures was carried out using back trajectories and satellite information. Both terrestrial locations in the Arctic and the adjacent sea were found to be possible source areas for highly active INPs.</p>https://www.atmos-chem-phys.net/19/5293/2019/acp-19-5293-2019.pdf |
| spellingShingle | H. Wex L. Huang W. Zhang H. Hung R. Traversi S. Becagli R. J. Sheesley C. E. Moffett T. E. Barrett R. Bossi H. Skov A. Hünerbein J. Lubitz M. Löffler M. Löffler O. Linke M. Hartmann P. Herenz P. Herenz F. Stratmann Annual variability of ice-nucleating particle concentrations at different Arctic locations Atmospheric Chemistry and Physics |
| title | Annual variability of ice-nucleating particle concentrations at different Arctic locations |
| title_full | Annual variability of ice-nucleating particle concentrations at different Arctic locations |
| title_fullStr | Annual variability of ice-nucleating particle concentrations at different Arctic locations |
| title_full_unstemmed | Annual variability of ice-nucleating particle concentrations at different Arctic locations |
| title_short | Annual variability of ice-nucleating particle concentrations at different Arctic locations |
| title_sort | annual variability of ice nucleating particle concentrations at different arctic locations |
| url | https://www.atmos-chem-phys.net/19/5293/2019/acp-19-5293-2019.pdf |
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