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  • 1
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    Abstracts of the 6th FECS Conference 1998 Lectures (1998)
    Springer
    Details
    Publication Date: 1998-09-01
    Print ISSN: 0944-1344
    Electronic ISSN: 1614-7499
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Published by Springer
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    PAPER CURRENT
  • 2
    Electronic Resource
    Electronic Resource
    Urban benzene and population exposure (2000)
    [s.l.] : Macmillan Magazines Ltd.
    Nature 404 (2000), S. 141-142 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Benzene pollution emanating from motor traffic can cause leukaemia, with the risk being estimated at about four cases per million among people who experience lifelong exposure to benzene concentrations of 1 μg m−3 in air. But we show here that personal exposure, and ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/35004651
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    Paper (German National Licenses)
    Fulltext
  • 3
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    Differing Mechanisms of New Particle Formation at Two Arctic Sites (2021)
    WIley
    In:  EPIC3Geophysical Research Letters, WIley, 48(4), pp. e2020GL091334
    Details
    Publication Date: 2021-03-01
    Description: Abstract New particle formation in the Arctic atmosphere is an important source of aerosol particles. Understanding the processes of Arctic secondary aerosol formation is crucial due to their significant impact on cloud properties and therefore Arctic amplification. We observed the molecular formation of new particles from low-volatility vapors at two Arctic sites with differing surroundings. In Svalbard, sulfuric acid (SA) and methane sulfonic acid (MSA) contribute to the formation of secondary aerosol and to some extent to cloud condensation nuclei (CCN). This occurs via ion-induced nucleation of SA and NH3 and subsequent growth by mainly SA and MSA condensation during springtime and highly oxygenated organic molecules during summertime. By contrast, in an ice-covered region around Villum, we observed new particle formation driven by iodic acid but its concentration was insufficient to grow nucleated particles to CCN sizes. Our results provide new insight about sources and precursors of Arctic secondary aerosol particles.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
    Format: application/pdf
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    PAPER (OA)
  • 4
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    Modelling the coupled mercury-halogen-ozone cycle in the central Arctic during spring (2023)
    University of California Press
    In:  EPIC3Elementa: Science of the Anthropocene, University of California Press, 11(1), pp. 6237-6271, ISSN: 2785-4558
    Details
    Publication Date: 2023-09-15
    Description: Near-surface mercury and ozone depletion events occur in the lowest part of the atmosphere during Arctic spring. Mercury depletion is the first step in a process that transforms long-lived elemental mercury to more reactive forms within the Arctic that are deposited to the cryosphere, ocean, and other surfaces, which can ultimately get integrated into the Arctic food web. Depletion of both mercury and ozone occur due to the presence of reactive halogen radicals that are released from snow, ice, and aerosols. In this work, we added a detailed description of the Arctic atmospheric mercury cycle to our recently published version of the Weather Research and Forecasting model coupled with Chemistry (WRF-Chem 4.3.3) that includes Arctic bromine and chlorine chemistry and activation/recycling on snow and aerosols. The major advantage of our modelling approach is the online calculation of bromine concentrations and emission/recycling that is required to simulate the hourly and daily variability of Arctic mercury depletion. We used this model to study coupling between reactive cycling of mercury, ozone, and bromine during the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) spring season in 2020 and evaluated results compared to land-based, ship-based, and remote sensing observations. The model predicts that elemental mercury oxidation is driven largely by bromine chemistry and that particulate mercury is the major form of oxidized mercury. The model predicts that the majority (74%) of oxidized mercury deposited to land-based snow is re-emitted to the atmosphere as gaseous elemental mercury, while a minor fraction (4%) of oxidized mercury that is deposited to sea ice is re-emitted during spring. Our work demonstrates that hourly differences in bromine/ozone chemistry in the atmosphere must be considered to capture the springtime Arctic mercury cycle, including its integration into the cryosphere and ocean.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , peerRev
    Format: application/pdf
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    PAPER (OA)
  • 5
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    Pan-Arctic hourly mean homogenised (dry diameter range 20 to 500 nm) observations of aerosol number size distributions from five arctic long-term observation sites (2017)
    PANGAEA
    In:  Supplement to: Freud, Eyal; Krejci, Radovan; Tunved, Peter; Leaitch, W Richard; Nguyen, Quynh T; Massling, Andreas; Skov, Henrik; Barrie, Leonard (2017): Pan-Arctic aerosol number size distributions: seasonality and transport patterns. Atmospheric Chemistry and Physics, 17(13), 8101-8128, https://doi.org/10.5194/acp-17-8101-2017
    Details
    Publication Date: 2023-01-13
    Description: The Arctic environment has an amplified response to global climatic change. It is sensitive to human activities that mostly take place elsewhere. For this study, a multi-year set of observed aerosol number size distributions in the diameter range of 10 to 500 nm from five sites around the Arctic Ocean (Alert, Villum Research Station - Station Nord, Zeppelin, Tiksi and Barrow) was assembled and analysed. A cluster analysis of the aerosol number size distributions, revealed four distinct distributions. Together with Lagrangian air parcel back-trajectories, they were used to link the observed aerosol number size distributions with a variety of transport regimes. This analysis yields insight into aerosol dynamics, transport and removal processes, on both an intra- and inter-monthly scales. For instance, the relative occurrence of aerosol number size distributions that indicate new particle formation (NPF) event is near zero during the dark months, and increases gradually to ~ 40 % from spring to summer, and then collapses in autumn. Also, the likelihood of Arctic Haze aerosols is minimal in summer and peaks in April at all sites. The residence time of accumulation-mode particles in the Arctic troposphere is typically long enough to allow tracking them back to their source regions. Air flow that passes at low altitude over central Siberia and Western Russia is associated with relatively high concentrations of accumulation-mode particles (Nacc) at all five sites - often above 150/cm**3. There are also indications of air descending into the Arctic boundary layer after transport from lower latitudes. The analysis of the back-trajectories together with the meteorological fields along them indicates that the main driver of the Arctic annual cycle of Nacc, on the larger scale, is when atmospheric transport covers the source regions for these particles in the 10-day period preceding the observations in the Arctic. The scavenging of these particles by precipitation is shown to be important on a regional scale and it is most active in summer. Cloud processing is an additional factor that enhances the Nacc annual cycle. There are some consistent differences between the sites that are beyond the year-to-year variability. They are the result of differences in the proximity to the aerosol source regions and to the Arctic Ocean sea-ice edge, as well as in the exposure to free tropospheric air and in precipitation patterns - to mention a few. Hence, for most purposes, aerosol observations from a single Arctic site cannot represent the entire Arctic region. Therefore, the results presented here are a powerful observational benchmark for evaluation of detailed climate and air chemistry modelling studies of aerosols throughout the vast Arctic region.
    Type: Dataset
    Format: application/zip, 5 datasets
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    DATA PANGAEA
  • 6
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    Hourly mean homogenised (dry diameter range 20 to 500 nm) observations of aerosol number size distributions from station Zeppelin, 2010-01-01 to 2015-12-22 (2017)
    PANGAEA
    Details
    Publication Date: 2023-01-13
    Keywords: Aerosol number concentration; Air chemistry observatory; DATE/TIME; Log-normal particle size distribution, normalized concentration at particle diameter 100.24 nm; Log-normal particle size distribution, normalized concentration at particle diameter 112.47 nm; Log-normal particle size distribution, normalized concentration at particle diameter 126.19 nm; Log-normal particle size distribution, normalized concentration at particle diameter 141.59 nm; Log-normal particle size distribution, normalized concentration at particle diameter 158.87 nm; Log-normal particle size distribution, normalized concentration at particle diameter 178.25 nm; Log-normal particle size distribution, normalized concentration at particle diameter 200 nm; Log-normal particle size distribution, normalized concentration at particle diameter 20 nm; Log-normal particle size distribution, normalized concentration at particle diameter 22.44 nm; Log-normal particle size distribution, normalized concentration at particle diameter 224.4 nm; Log-normal particle size distribution, normalized concentration at particle diameter 25.179 nm; Log-normal particle size distribution, normalized concentration at particle diameter 251.79 nm; Log-normal particle size distribution, normalized concentration at particle diameter 28.251 nm; Log-normal particle size distribution, normalized concentration at particle diameter 282.51 nm; Log-normal particle size distribution, normalized concentration at particle diameter 31.698 nm; Log-normal particle size distribution, normalized concentration at particle diameter 316.98 nm; Log-normal particle size distribution, normalized concentration at particle diameter 35.566 nm; Log-normal particle size distribution, normalized concentration at particle diameter 355.66 nm; Log-normal particle size distribution, normalized concentration at particle diameter 39.905 nm; Log-normal particle size distribution, normalized concentration at particle diameter 399.05 nm; Log-normal particle size distribution, normalized concentration at particle diameter 44.774 nm; Log-normal particle size distribution, normalized concentration at particle diameter 447.74 nm; Log-normal particle size distribution, normalized concentration at particle diameter 50.238 nm; Log-normal particle size distribution, normalized concentration at particle diameter 502.38 nm; Log-normal particle size distribution, normalized concentration at particle diameter 56.368 nm; Log-normal particle size distribution, normalized concentration at particle diameter 63.246 nm; Log-normal particle size distribution, normalized concentration at particle diameter 70.963 nm; Log-normal particle size distribution, normalized concentration at particle diameter 79.621 nm; Log-normal particle size distribution, normalized concentration at particle diameter 89.337 nm; Mountain Air Monitoring Station; Ny-Ålesund, Spitsbergen; SPUSO; Zeppelin
    Type: Dataset
    Format: text/tab-separated-values, 841244 data points
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    DATA PANGAEA
  • 7
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    Hourly mean homogenised (dry diameter range 20 to 500 nm) observations of aerosol number size distributions from station Barrow, 2007-09-20 to 2015-07-09 (2017)
    PANGAEA
    Details
    Publication Date: 2023-01-13
    Keywords: Aerosol number concentration; Air chemistry observatory; Barrow; DATE/TIME; Log-normal particle size distribution, normalized concentration at particle diameter 100.24 nm; Log-normal particle size distribution, normalized concentration at particle diameter 112.47 nm; Log-normal particle size distribution, normalized concentration at particle diameter 126.19 nm; Log-normal particle size distribution, normalized concentration at particle diameter 141.59 nm; Log-normal particle size distribution, normalized concentration at particle diameter 158.87 nm; Log-normal particle size distribution, normalized concentration at particle diameter 178.25 nm; Log-normal particle size distribution, normalized concentration at particle diameter 200 nm; Log-normal particle size distribution, normalized concentration at particle diameter 20 nm; Log-normal particle size distribution, normalized concentration at particle diameter 22.44 nm; Log-normal particle size distribution, normalized concentration at particle diameter 224.4 nm; Log-normal particle size distribution, normalized concentration at particle diameter 25.179 nm; Log-normal particle size distribution, normalized concentration at particle diameter 251.79 nm; Log-normal particle size distribution, normalized concentration at particle diameter 28.251 nm; Log-normal particle size distribution, normalized concentration at particle diameter 282.51 nm; Log-normal particle size distribution, normalized concentration at particle diameter 31.698 nm; Log-normal particle size distribution, normalized concentration at particle diameter 316.98 nm; Log-normal particle size distribution, normalized concentration at particle diameter 35.566 nm; Log-normal particle size distribution, normalized concentration at particle diameter 355.66 nm; Log-normal particle size distribution, normalized concentration at particle diameter 39.905 nm; Log-normal particle size distribution, normalized concentration at particle diameter 399.05 nm; Log-normal particle size distribution, normalized concentration at particle diameter 44.774 nm; Log-normal particle size distribution, normalized concentration at particle diameter 447.74 nm; Log-normal particle size distribution, normalized concentration at particle diameter 50.238 nm; Log-normal particle size distribution, normalized concentration at particle diameter 502.38 nm; Log-normal particle size distribution, normalized concentration at particle diameter 56.368 nm; Log-normal particle size distribution, normalized concentration at particle diameter 63.246 nm; Log-normal particle size distribution, normalized concentration at particle diameter 70.963 nm; Log-normal particle size distribution, normalized concentration at particle diameter 79.621 nm; Log-normal particle size distribution, normalized concentration at particle diameter 89.337 nm; SPUSO; United States of America
    Type: Dataset
    Format: text/tab-separated-values, 316920 data points
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  • 8
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    Hourly mean homogenised (dry diameter range 20 to 500 nm) observations of aerosol number size distributions from station Tiksi, 2013-01-05 to 2015-12-06 (2017)
    PANGAEA
    Details
    Publication Date: 2023-01-13
    Keywords: Aerosol number concentration; DATE/TIME; Log-normal particle size distribution, normalized concentration at particle diameter 100.24 nm; Log-normal particle size distribution, normalized concentration at particle diameter 112.47 nm; Log-normal particle size distribution, normalized concentration at particle diameter 126.19 nm; Log-normal particle size distribution, normalized concentration at particle diameter 141.59 nm; Log-normal particle size distribution, normalized concentration at particle diameter 158.87 nm; Log-normal particle size distribution, normalized concentration at particle diameter 178.25 nm; Log-normal particle size distribution, normalized concentration at particle diameter 200 nm; Log-normal particle size distribution, normalized concentration at particle diameter 20 nm; Log-normal particle size distribution, normalized concentration at particle diameter 22.44 nm; Log-normal particle size distribution, normalized concentration at particle diameter 224.4 nm; Log-normal particle size distribution, normalized concentration at particle diameter 25.179 nm; Log-normal particle size distribution, normalized concentration at particle diameter 251.79 nm; Log-normal particle size distribution, normalized concentration at particle diameter 28.251 nm; Log-normal particle size distribution, normalized concentration at particle diameter 282.51 nm; Log-normal particle size distribution, normalized concentration at particle diameter 31.698 nm; Log-normal particle size distribution, normalized concentration at particle diameter 316.98 nm; Log-normal particle size distribution, normalized concentration at particle diameter 35.566 nm; Log-normal particle size distribution, normalized concentration at particle diameter 355.66 nm; Log-normal particle size distribution, normalized concentration at particle diameter 39.905 nm; Log-normal particle size distribution, normalized concentration at particle diameter 399.05 nm; Log-normal particle size distribution, normalized concentration at particle diameter 44.774 nm; Log-normal particle size distribution, normalized concentration at particle diameter 447.74 nm; Log-normal particle size distribution, normalized concentration at particle diameter 50.238 nm; Log-normal particle size distribution, normalized concentration at particle diameter 502.38 nm; Log-normal particle size distribution, normalized concentration at particle diameter 56.368 nm; Log-normal particle size distribution, normalized concentration at particle diameter 63.246 nm; Log-normal particle size distribution, normalized concentration at particle diameter 70.963 nm; Log-normal particle size distribution, normalized concentration at particle diameter 79.621 nm; Log-normal particle size distribution, normalized concentration at particle diameter 89.337 nm; OBSE; Observation; Tiksi
    Type: Dataset
    Format: text/tab-separated-values, 318210 data points
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    DATA PANGAEA
  • 9
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    Hourly mean homogenised (dry diameter range 20 to 500 nm) observations of aerosol number size distributions from station Station_Nord, 2010-07-07T to 2013-12-31 (2017)
    PANGAEA
    Details
    Publication Date: 2023-01-13
    Keywords: Aerosol number concentration; Air chemistry observatory; DATE/TIME; Log-normal particle size distribution, normalized concentration at particle diameter 100.24 nm; Log-normal particle size distribution, normalized concentration at particle diameter 112.47 nm; Log-normal particle size distribution, normalized concentration at particle diameter 126.19 nm; Log-normal particle size distribution, normalized concentration at particle diameter 141.59 nm; Log-normal particle size distribution, normalized concentration at particle diameter 158.87 nm; Log-normal particle size distribution, normalized concentration at particle diameter 178.25 nm; Log-normal particle size distribution, normalized concentration at particle diameter 200 nm; Log-normal particle size distribution, normalized concentration at particle diameter 20 nm; Log-normal particle size distribution, normalized concentration at particle diameter 22.44 nm; Log-normal particle size distribution, normalized concentration at particle diameter 224.4 nm; Log-normal particle size distribution, normalized concentration at particle diameter 25.179 nm; Log-normal particle size distribution, normalized concentration at particle diameter 251.79 nm; Log-normal particle size distribution, normalized concentration at particle diameter 28.251 nm; Log-normal particle size distribution, normalized concentration at particle diameter 282.51 nm; Log-normal particle size distribution, normalized concentration at particle diameter 31.698 nm; Log-normal particle size distribution, normalized concentration at particle diameter 316.98 nm; Log-normal particle size distribution, normalized concentration at particle diameter 35.566 nm; Log-normal particle size distribution, normalized concentration at particle diameter 355.66 nm; Log-normal particle size distribution, normalized concentration at particle diameter 39.905 nm; Log-normal particle size distribution, normalized concentration at particle diameter 399.05 nm; Log-normal particle size distribution, normalized concentration at particle diameter 44.774 nm; Log-normal particle size distribution, normalized concentration at particle diameter 447.74 nm; Log-normal particle size distribution, normalized concentration at particle diameter 50.238 nm; Log-normal particle size distribution, normalized concentration at particle diameter 502.38 nm; Log-normal particle size distribution, normalized concentration at particle diameter 56.368 nm; Log-normal particle size distribution, normalized concentration at particle diameter 63.246 nm; Log-normal particle size distribution, normalized concentration at particle diameter 70.963 nm; Log-normal particle size distribution, normalized concentration at particle diameter 79.621 nm; Log-normal particle size distribution, normalized concentration at particle diameter 89.337 nm; North Greenland; SPUSO; Station_Nord; Villum Research Station
    Type: Dataset
    Format: text/tab-separated-values, 588750 data points
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  • 10
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    (Table 2) Annual mean concentrations of atmospheric PCB at four monitoring stations around the Arctic
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: Air chemistry observatory; Alert; Canadian Arctic Station; DATE/TIME; Event label; Iceland; Joint Arctic Weather Stations; Matorova; Method comment; Mountain Air Monitoring Station; Ny-Ålesund, Spitsbergen; OBSE; Observation; Pallas; Pallas-Yllästunturi National Park, Finland; Polychlorinated biphenyl, standard deviation; Polychlorinated biphenyl in air; Queen Elizabeth Islands, Canada NWT; SPUSO; Storhofdi; Zeppelin
    Type: Dataset
    Format: text/tab-separated-values, 215 data points
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    DATA PANGAEA
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