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46 Research products, page 1 of 5

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  • Open Access English
    Authors: 
    Fanourgakis, George S.; Kanakidou, Maria; Nenes, Athanasios; Bauer, Susanne E.; Bergman, Tommi; Carslaw, Ken S.; Grini, Alf; Hamilton, Douglas S.; Johnson, Jill S.; Karydis, Vlassis A.; +29 more
    Project: EC | PyroTRACH (726165), EC | BACCHUS (603445), NSF | Development, Validation, ... (1550816), EC | RECAP (724602), EC | ACTRIS-2 (654109), EC | CRESCENDO (641816)

    A total of 16 global chemistry transport models and general circulation models have participated in this study; 14 models have been evaluated with regard to their ability to reproduce the near-surface observed number concentration of aerosol particles and cloud condensa...

  • Open Access English
    Authors: 
    Blechschmidt, Anne-Marlene; Arteta, Joaquim; Coman, Adriana; Curier, Lyana; Eskes, Henk; Foret, Gilles; Gielen, Clio; Hendrick, Francois; Marécal, Virginie; Meleux, Frédérik; +13 more
    Project: EC | MACC II (283576), EC | MACC-III (633080), EC | NORS (284421)

    Multi-axis differential optical absorption spectroscopy (MAX-DOAS) tropospheric NO2 column retrievals from four European measurement stations are compared to simulations from five regional air quality models which contribute to the European regional ensemble forecasts a...

  • Open Access English
    Authors: 
    Sourdeval, Odran; Gryspeerdt, Edward; Krämer, Martina; Goren, Tom; Delanoë, Julien; Afchine, Armin; Hemmer, Friederike; Quaas, Johannes;
    Project: EC | QUAERERE (306284), EC | MSCCC (703880)

    The number concentration of cloud particles is a key quantity for understanding aerosol–cloud interactions and describing clouds in climate and numerical weather prediction models. In contrast with recent advances for liquid clouds, few observational constraints exist r...

  • Open Access English
    Authors: 
    Gryspeerdt, Edward; Goren, Tom; Sourdeval, Odran; Quaas, Johannes; Mülmenstädt, Johannes; Dipu, Sudhakar; Unglaub, Claudia; Gettelman, Andrew; Christensen, Matthew;
    Project: EC | QUAERERE (306284), EC | MSCCC (703880)

    The impact of aerosols on cloud properties is one of the largest uncertainties in the anthropogenic radiative forcing of the climate. Significant progress has been made in constraining this forcing using observations, but uncertainty remains, particularly in the magnitu...

  • Open Access English
    Authors: 
    Kalivitis, Nikos; Kerminen, Veli-Matti; Kouvarakis, Giorgos; Stavroulas, Iasonas; Tzitzikalaki, Evaggelia; Kalkavouras, Panayiotis; Daskalakis, Nikos; Myriokefalitakis, Stelios; Bougiatioti, Aikaterini; Manninen, Hanna E.; +6 more
    Project: EC | BACCHUS (603445), EC | ACTRIS-2 (654109)

    Atmospheric new particle formation (NPF) is a common phenomenon all over the world. In this study we present the longest time series of NPF records in the eastern Mediterranean region by analyzing 10 years of aerosol number size distribution data obtained with a mobilit...

  • Open Access English
    Authors: 
    Metzger, Swen; Abdelkader, Mohamed; Steil, Benedikt; Klingmüller, Klaus;
    Project: EC | C8 (226144), EC | EoCoE (676629)

    We scrutinize the importance of aerosol water for the aerosol optical depth (AOD) calculations using a long-term evaluation of the EQuilibrium Simplified Aerosol Model v4 for climate modeling. EQSAM4clim is based on a single solute coefficient approach that efficiently ...

  • Open Access English
    Authors: 
    Schaller, Carsten; Kittler, Fanny; Foken, Thomas; Göckede, Mathias;
    Project: EC | PERCCOM (333796), EC | PAGE21 (282700)

    Methane (CH4) emissions from biogenic sources, such as Arctic permafrost wetlands, are associated with large uncertainties because of the high variability of fluxes in both space and time. This variability poses a challenge to monitoring CH4 fluxes with the eddy covaria...

  • Open Access English
    Authors: 
    Radenz, Martin; Seifert, Patric; Baars, Holger; Floutsi, Athena Augusta; Yin, Zhenping; Bühl, Johannes;
    Project: EC | ACTRIS-2 (654109), EC | BACCHUS (603445)

    Height-resolved air mass source attribution is crucial for the evaluation of profiling ground-based remote sensing observations, especially when using lidar (light detection and ranging) to investigate different aerosol types throughout the atmosphere. Lidar networks, s...

  • Open Access English
    Authors: 
    Ayarzagüena, Blanca; Palmeiro, Froila M.; Barriopedro, David; Calvo, Natalia; Langematz, Ulrike; Shibata, Kiyotaka;
    Project: EC | STRATOCLIM (603557)

    Major sudden stratospheric warmings (SSWs) represent one of the most abrupt phenomena of the boreal wintertime stratospheric variability, and constitute the clearest example of coupling between the stratosphere and the troposphere. A good representation of SSWs in clima...

  • Open Access English
    Authors: 
    Compernolle, Steven; Verhoelst, Tijl; Pinardi, Gaia; Granville, José; Hubert, Daan; Keppens, Arno; Niemeijer, Sander; Rino, Bruno; Bais, Alkis; Beirle, Steffen; +17 more
    Project: EC | GAIA-CLIM (640276), EC | QA4ECV (607405)

    The QA4ECV (Quality Assurance for Essential Climate Variables) version 1.1 stratospheric and tropospheric NO2 vertical column density (VCD) climate data records (CDRs) from the OMI (Ozone Monitoring Instrument) satellite sensor are validated using NDACC (Network for the...