Articles | Volume 21, issue 22
Atmos. Chem. Phys., 21, 16727–16744, 2021
https://doi.org/10.5194/acp-21-16727-2021
Atmos. Chem. Phys., 21, 16727–16744, 2021
https://doi.org/10.5194/acp-21-16727-2021
Research article
 | Highlight paper
17 Nov 2021
Research article  | Highlight paper | 17 Nov 2021

A sulfur dioxide Covariance-Based Retrieval Algorithm (COBRA): application to TROPOMI reveals new emission sources

Nicolas Theys et al.

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Latest update: 09 Dec 2022
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Short summary
We present a new algorithm to retrieve sulfur dioxide from space UV measurements. We apply the technique to high-resolution TROPOMI measurements and demonstrate the high sensitivity of the approach to weak SO2 emissions worldwide with an unprecedented limit of detection of 8 kt yr−1. This result has broad implications for atmospheric science studies dealing with improving emission inventories and identifying and quantifying missing sources, in the context of air quality and climate.
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