Zobrazeno 1 - 10
of 481
pro vyhledávání: '"P. F. Levelt"'
Publikováno v:
AGU Advances, Vol 5, Iss 5, Pp n/a-n/a (2024)
Abstract Satellite observations are critical for air quality and climate monitoring, and for developing the process understanding needed for reliable planning and predictions. Our current space‐based observing system stands at a crossroads with the
Externí odkaz:
https://doaj.org/article/846fa77245d34ab5a42e06438311f6ea
Autor:
S. Martínez‐Alonso, J. P. Veefkind, B. Dix, B. Gaubert, N. Theys, C. Granier, A. Soulié, S. Darras, H. Eskes, W. Tang, H. Worden, J. deGouw, P. F. Levelt
Publikováno v:
Geophysical Research Letters, Vol 50, Iss 19, Pp n/a-n/a (2023)
Abstract We have analyzed Sentinel‐5 Precursor TROPOspheric Monitoring Instrument (TROPOMI) data over the Copperbelt mining region (Democratic Republic of Congo and Zambia). Despite high background values, annual 2019–2022 means of TROPOMI NO2 (n
Externí odkaz:
https://doaj.org/article/9963ab8d863f4152a2505278479a96e9
Autor:
P. F. Levelt, D. C. Stein Zweers, I. Aben, M. Bauwens, T. Borsdorff, I. De Smedt, H. J. Eskes, C. Lerot, D. G. Loyola, F. Romahn, T. Stavrakou, N. Theys, M. Van Roozendael, J. P. Veefkind, T. Verhoelst
Publikováno v:
Atmospheric Chemistry and Physics, Vol 22, Pp 10319-10351 (2022)
The aim of this paper is to highlight how TROPOspheric Monitoring Instrument (TROPOMI) trace gas data can best be used and interpreted to understand event-based impacts on air quality from regional to city scales around the globe. For this study, we
Externí odkaz:
https://doaj.org/article/333b8d03fbe6489485491cc6b7a0ecb9
Autor:
Q. Kleipool, N. Rozemeijer, M. van Hoek, J. Leloux, E. Loots, A. Ludewig, E. van der Plas, D. Adrichem, R. Harel, S. Spronk, M. ter Linden, G. Jaross, D. Haffner, P. Veefkind, P. F. Levelt
Publikováno v:
Atmospheric Measurement Techniques, Vol 15, Pp 3527-3553 (2022)
The Ozone Monitoring Instrument (OMI) was launched on 15 July 2004, with an expected mission lifetime of 5 years. After more than 17 years in orbit the instrument is still functioning satisfactorily and in principle can continue doing so until the ex
Externí odkaz:
https://doaj.org/article/4ce6b8b8d1fb4373afa09ea1658af7d8
Autor:
L. N. Zhang, S. Solomon, K. A. Stone, J. D. Shanklin, J. D. Eveson, S. Colwell, J. P. Burrows, M. Weber, P. F. Levelt, N. A. Kramarova, D. P. Haffner
Publikováno v:
Atmospheric Chemistry and Physics, Vol 21, Pp 9829-9838 (2021)
Measurements by the Dobson ozone spectrophotometer at the British Antarctic Survey's (BAS) Halley research station form a record of Antarctic total column ozone that dates back to 1956. Due to its location, length, and completeness, the record has be
Externí odkaz:
https://doaj.org/article/c008b6f9e2f246a39ed110d16e0d3c1b
Publikováno v:
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 14, Pp 9692-9710 (2021)
Quantitative measurements of aerosol absorptive properties, e.g., the absorbing aerosol optical depth (AAOD) and the single scattering albedo (SSA), are important to reduce uncertainties of aerosol climate radiative forcing assessments. Currently, gl
Externí odkaz:
https://doaj.org/article/b97e39e17bb04ffd8765636eeb6f7e4e
Autor:
T. Verhoelst, S. Compernolle, G. Pinardi, J.-C. Lambert, H. J. Eskes, K.-U. Eichmann, A. M. Fjæraa, J. Granville, S. Niemeijer, A. Cede, M. Tiefengraber, F. Hendrick, A. Pazmiño, A. Bais, A. Bazureau, K. F. Boersma, K. Bognar, A. Dehn, S. Donner, A. Elokhov, M. Gebetsberger, F. Goutail, M. Grutter de la Mora, A. Gruzdev, M. Gratsea, G. H. Hansen, H. Irie, N. Jepsen, Y. Kanaya, D. Karagkiozidis, R. Kivi, K. Kreher, P. F. Levelt, C. Liu, M. Müller, M. Navarro Comas, A. J. M. Piters, J.-P. Pommereau, T. Portafaix, C. Prados-Roman, O. Puentedura, R. Querel, J. Remmers, A. Richter, J. Rimmer, C. Rivera Cárdenas, L. Saavedra de Miguel, V. P. Sinyakov, W. Stremme, K. Strong, M. Van Roozendael, J. P. Veefkind, T. Wagner, F. Wittrock, M. Yela González, C. Zehner
Publikováno v:
Atmospheric Measurement Techniques, Vol 14, Pp 481-510 (2021)
This paper reports on consolidated ground-based validation results of the atmospheric NO2 data produced operationally since April 2018 by the TROPOspheric Monitoring Instrument (TROPOMI) on board of the ESA/EU Copernicus Sentinel-5 Precursor (S5P) sa
Externí odkaz:
https://doaj.org/article/58363344ec4645f0b4d7e961a465731d
Publikováno v:
Atmospheric Measurement Techniques, Vol 13, Pp 3043-3059 (2020)
The TROPOspheric Monitoring Instrument (TROPOMI) level-2 aerosol layer height (ALH) product has now been released to the general public. This product is retrieved using TROPOMI's measurements of the oxygen A-band, radiative transfer model (RTM) calcu
Externí odkaz:
https://doaj.org/article/a44226204d9d47a5b3e66ca5c871fc74
Publikováno v:
Atmospheric Measurement Techniques, Vol 12, Pp 6619-6634 (2019)
To retrieve aerosol properties from satellite measurements of the oxygen A-band in the near-infrared, a line-by-line radiative transfer model implementation requires a large number of calculations. These calculations severely restrict a retrieval alg
Externí odkaz:
https://doaj.org/article/83571a3990434c81bc957240ac485585
Publikováno v:
Atmospheric Measurement Techniques, Vol 12, Pp 491-516 (2019)
Global mapping of satellite tropospheric NO2 vertical column density (VCD), a key gas in air quality monitoring, requires accurate retrievals over complex urban and industrialized areas and under any atmospheric conditions. The high abundance of aero
Externí odkaz:
https://doaj.org/article/b9a9180dcfc04e3b801c6f9a50a8e9bc