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Sudden changes in nitrogen dioxide emissions over Greece due to lockdown after the outbreak of COVID-19
The unprecedented order, in modern peaceful times, for a near-total lockdown of the Greek populat...
Koukouli, M.-E., Skoulidou, I., Karavias, A., Parcharidis, I., Balis, D., Manders, A., Segers, A., Eskes, H. and van Geffen, J | Journal: Atmospheric Chemistry and Physics | Volume: 21 | Year: 2021 | doi: https://doi.org/10.5194/acp-21-1759-2021
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Assessing nitrogen dioxide in the Highveld troposphere: Pandora insights and TROPOMI Sentinel-5P evaluation
Nitrogen oxides, particularly NO2, are emitted through a variety of industrial and transport proc...
Kai-Sikhakhane, R. F., Scholes, M. C., Piketh, S. J., van Geffen, J., Garland, R. M., Havenga, H. and Scholes, R. J. | Journal: Atmosphere | Volume: 15 | Year: 2024 | First page: 1187 | doi: 10.3390/atmos15101187
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Natural emissions of VOC and NOx over Africa constrainted by TROPOMI HCHO and NO2 data using the MAGRITTEv1.1 model
Natural emissions (vegetation, soil, and lightning) are the dominant sources of non-methane bioge...
Opacka, B., Stavrakou, T., Müller, J.-F., De Smedt, I., van Geffen, J., Marais, E. A., Horner, R. P., Millet, D. B., Wells, K. C. and Guenther, A. B. | Journal: Atmos. Chem. Phys. | Volume: 25 | Year: 2025 | First page: 2863 | Last page: 2894 | doi: 10.5194/acp-25-2863-2025
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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
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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
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