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First 2530 results for ” J van Geffen”

  1. Sunshine is an important determinant of vitamin D status even among high-dose supplement users: secondary analysis of a randomised controlled trial in Crohn's disease patients

    Sunshine is considered to be the most important source of vitamin D. Due to an increased risk of ...

    F O'Sullivan, T Raftery, M van Weele, J van Geffen, D McNamara, C O'Morain, N Mahmud, D Kelly, M Healy, M O'Sullivan, L Zgaga | Status: published | Journal: Photochem. and Photobiol. | Volume: 95 | Year: 2019 | First page: 1060 | Last page: 1067 | doi: 10.1111/php.13086

    Publication

  2. Improved slant column density retrieval of nitrogen dioxide and formaldehyde for OMI and GOME-2A from QA4ECV: intercomparison, uncertainty characterisation, and trends

    Nitrogen dioxide (NO2) and formaldehyde (HCHO) column data from satellite instruments are used fo...

    M Zara, KF Boersma, I De Smedt, A Richter, E Peters, JHG van Geffen, S Beirle, T Wagner, M Van Roozendael, S Marchenko, LN Lamsal, HJ Eskes | Status: published | Journal: Atmospheric Measurement Techniques | Volume: 11 | Year: 2018 | First page: 4033 | Last page: 4058 | doi: https://doi.org/10.5194/amt-11-4033-2018

    Publication

  3. Quantification of nitrogen oxides emissions from build-up of pollution over Paris with TROPOMI

    Nitrogen dioxide (NO2) is a regulated air pollutant that is of particular concern in many cities,...

    A. Lorente, K. F. Boersma, H. J. Eskes, J. P. Veefkind, J. H. G. M. van Geffen, M. B. de Zeeuw, H. A. C. Denier van der Gon, S. Beirle & M. C. Krol | Journal: Scientific Reports | Volume: 9 | Year: 2019 | First page: 20033 | doi: 10.1038/s41598-019-56428-5

    Publication

  4. Evaluation of the LOTOS-EUROS NO2 simulations using ground-based measurements and S5P/TROPOMI observations over Greece

    The evaluation of chemical transport models, CTMs, is essential for the assessment of their perfo...

    I Skoulidou, ME Koukouli, A Manders, A Segers, D Karagkiozidis, M Gratsea, D Balis, A Bais, E Gerasopoulos, T Stavrakou, J van Geffen, H Eskes, A Richter | Status: published | Journal: Atm. Chem. Phys. | Volume: 21 | Year: 2021 | First page: 5269 | Last page: 5288 | doi: 10.5194/acp-21-5269-2021

    Publication

  5. A new separation methodology for the maritime sector emissions over the Mediterranean and Black Sea regions

    The aim of this paper is to apply a new lane separation methodology for the maritime sector emiss...

    Pseftogkas, A., Koukouli, M.-E., Skoulidou, I., Balis, D., Melati, C., Stavrakou, T., Falco, L., van Geffen, J., Eskes, H., Segers, A. and Manders, A. | Journal: Atmosphere | Volume: 12 | Year: 2021 | First page: 1478 | doi: 10.3390/atmos12111478

    Publication