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First 3198 results for ” J Van Geffen”

  1. Prevalence and determinants of profound vitamin D deficiency (25-hydroxyvitamin D <10 nmol/L) in the UK Biobank and potential implications for disease association studies

    Background 25-hydroxyvitamin D (25OHD) is the principal biomarker of vitamin D status. Values ...

    Shraim, R., Brennan, M.M., van Geffen, J. and Zgaga, L. | Journal: Journal of Steroid Biochemistry and Molecular Biology | Volume: 250 | Year: 2025 | First page: 106737 | doi: 10.1016/j.jsbmb.2025.106737

    Publication

  2. Retrieving spectral reflectivity;s from Extracted GOME Instrument header data

    AJM Piters, RJ van der A, JHGM van Geffen, RF van Oss, PJM Valks | Conference: ERS-ENVISAT symposium | Place: Gothenburg | Year: 2000 | First page: 0 | Last page: 0

    Publication

  3. Improved spectral fitting of nitrogen dioxide from OMI in the 405 - 465 nm window

    An improved nitrogen dioxide (NO2) slant column density retrieval for the Ozone Monitoring Instru...

    JHGM van Geffen, KF Boersma, M Van Roozendael, F Hendrick, E Mahieu, I De Smedt, M Sneep, JP Veefkind | Status: published | Journal: Atmospheric Measurement Techniques | Volume: 8 | Year: 2015 | First page: 1685 | Last page: 1699 | doi: 10.5194/amt-8-1685-2015

    Publication

  4. GOME Fast delivery and value-Added Products (GOFAP)

    RJ van der A, AJM Piters, PJM Valks, JHGM van Geffen, C Zehner | Conference: ERS-ENVISAT symposium | Place: Gothenbrug | Year: 2000 | First page: 0 | Last page: 0

    Publication

  5. Improving algorithms and uncertainty estimates for satellite NO2 retrievals: results from the quality assurance for the essential climate variables (QA4ECV) project

    Global observations of tropospheric nitrogen dioxide (NO2) columns have been shown to be feasible...

    KF Boersma, HJ Eskes, A Richter, I De Smedt, A Lorente, JHGM van Geffen, M Zara, RJ van der A | Status: published | Journal: Atmospheric Measurement Techniques | Volume: 11 | Year: 2018 | First page: 6651 | Last page: 6678 | doi: https://doi.org/10.5194/amt-11-6651-2018

    Publication