Latsch, Miriam; Richter, Andreas; Burrows, John Philipp; Bösch, Hartmut (2025): Global filtered tropospheric NO2 slant column densities derived from 6-year averages of TROPOMI measurements over water for shipping signal detection [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.982514
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Published: 2025-08-28 • DOI registered: 2025-08-28
Abstract:
This dataset contains 6-year averages of global filtered tropospheric NO2 slant column densities (tSCDs) retrieved from the Sentinel-5 Precursor (S5P) satellite sensor TROPOMI (Tropospheric Monitoring Instrument) for the period from 1 May 2018 to 30 April 2024. All data are available on a 0.03° x 0.03° grid. The NO2 tSCDs are derived from the total slant columns by subtracting the across-track NO2 slant column stripe offset and spatially averaged stratospheric vertical column densities (VCDs) multiplied with the stratospheric air mass factor (AMF), provided in the TROPOMI NO2 product. The filtered NO2 tSCDs are developed to detect global shipping signals in the NO2 TROPOMI data. Therefore, only pixels over water are available in this dataset. The filtering methods include a high-pass filter with different box sizes (1°, 0.5°, 0.25°) and a Fourier filter. In addition, different flagging criteria are applied to the data with the standard box size of 1° for the high-pass filtering: no flagging, quality (qa) flagging, cloud fraction (CF) flagging, cloud height (CH) flagging, wind speed (wind) flagging, and sun glint (sg) flagging.
Keyword(s):
Related to:
Latsch, Miriam; Richter, Andreas; Burrows, John Philipp; Bösch, Hartmut (2025): Improved detection of global NO₂ signals from from shipping in Sentinel-5P TROPOMI data. Atmospheric Measurement Techniques, 18(17), 4373-4395, https://doi.org/10.5194/amt-18-4373-2025
Funding:
Coverage:
Median Latitude: 0.000000 * Median Longitude: 0.000000 * South-bound Latitude: -90.000000 * West-bound Longitude: -180.000000 * North-bound Latitude: 90.000000 * East-bound Longitude: 180.000000
Event(s):
Comment:
This dataset contains filtered tropospheric NO2 slant column densities for a qualitative detection of shipping signals in the satellite data. It does not estimate NOx emissions from shipping and needs to be modified for emission estimates. The amount of detected NO2 in this dataset depends on the box size and iteration method used for the high-pass filter.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Binary Object | Binary | Latsch, Miriam | |||
| 2 | Binary Object (Media Type) | Binary (Type) | Latsch, Miriam | |||
| 3 | Binary Object (File Size) | Binary (Size) | Bytes | Latsch, Miriam |
License:
Creative Commons Attribution-ShareAlike 4.0 International (CC-BY-SA-4.0)
Status:
Curation Level: Basic curation (CurationLevelB)
Size:
8 data points