Estimation of ship emission rates at a major shipping lane by long-path DOAS measurements
<p><strong class="journal-contentHeaderColor">Abstract.</strong> Ships are an important source of SO<span class="inline-formula"><sub>2</sub></span> and NO<span class="inline-formula"><sub><i>x</i></su...
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| Hauptverfasser: | , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
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24 August 2021
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| In: |
Atmospheric measurement techniques
Year: 2021, Jahrgang: 14, Heft: 8, Pages: 5791-5807 |
| ISSN: | 1867-8548 |
| DOI: | 10.5194/amt-14-5791-2021 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.5194/amt-14-5791-2021 Verlag, lizenzpflichtig, Volltext: https://amt.copernicus.org/articles/14/5791/2021/ 
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| Verfasserangaben: | Kai Krause, Folkard Wittrock, Andreas Richter, Stefan Schmitt, Denis Pöhler, Andreas Weigelt, and John P. Burrows |
MARC
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| 245 | 1 | 0 | |a Estimation of ship emission rates at a major shipping lane by long-path DOAS measurements |c Kai Krause, Folkard Wittrock, Andreas Richter, Stefan Schmitt, Denis Pöhler, Andreas Weigelt, and John P. Burrows |
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| 520 | |a <p><strong class="journal-contentHeaderColor">Abstract.</strong> Ships are an important source of SO<span class="inline-formula"><sub>2</sub></span> and NO<span class="inline-formula"><sub><i>x</i></sub></span>, which are key parameters of air quality. Monitoring of ship emissions is usually carried out using in situ instruments on land, which depend on favourable wind conditions to transport the emitted substances to the measurement site. Remote sensing techniques such as long-path differential optical absorption spectroscopy (LP-DOAS) measurements can supplement those measurements, especially in unfavourable meteorological conditions. In this study 1 year of LP-DOAS measurements made across the river Elbe close to Hamburg (Germany) have been evaluated. Peaks (i.e. elevated concentrations) in the NO<span class="inline-formula"><sub>2</sub></span> and SO<span class="inline-formula"><sub>2</sub></span> time series were assigned to passing ships, and a method to derive emission rates of SO<span class="inline-formula"><sub>2</sub></span>, NO<span class="inline-formula"><sub>2</sub></span> and NO<span class="inline-formula"><sub><i>x</i></sub></span> from those measurements using a Gaussian plume model is presented. A total of 7402 individual ship passages have been monitored, and their respective NO<span class="inline-formula"><sub><i>x</i></sub></span>, SO<span class="inline-formula"><sub>2</sub></span> and NO<span class="inline-formula"><sub>2</sub></span> emission rates have been derived. The emission rates, coupled with the knowledge of the ship type, ship size and ship speed, have been analysed. Emission rates are compared to emission factors from previous studies and show good agreement. In contrast to emission factors (in grams per kilogram fuel), the derived emission rates (in grams per second) do not need further knowledge about the fuel consumption of the ship. To our knowledge this is the first time emission rates of air pollutants from individual ships have been derived from LP-DOAS measurements.</p> | ||
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