Data assimilation of CrIS NH<sub>3</sub> satellite observations  for improving spatiotemporal NH<sub>3</sub>  distributions in LOTOS-EUROS

van der Graaf, Shelley; Dammers, Enrico; Segers, Arjo; Kranenburg, Richard; Schaap, Martijn; Shephard, Mark W.; Erisman, Jan Willem

doi:https://doi.org/10.5194/acp-22-951-2022

Articles | Volume 22, issue 2

https://doi.org/10.5194/acp-22-951-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-22-951-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 22, issue 2

Research article

|

20 Jan 2022

Research article |

| 20 Jan 2022

Data assimilation of CrIS NH₃ satellite observations for improving spatiotemporal NH₃ distributions in LOTOS-EUROS

Shelley van der Graaf, Enrico Dammers, Arjo Segers, Richard Kranenburg, Martijn Schaap, Mark W. Shephard, and Jan Willem Erisman

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Final revised paper (published on 20 Jan 2022)
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Preprint (discussion started on 22 Jul 2021)
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Status: closed

RC1: 'Comment on acp-2021-473', Anonymous Referee #1, 11 Aug 2021

The manuscript presents an application of NH3 emission inversion using CrIS satellite observations and two different methods. The effects of the two methods are compared and validated with independent in situ data. The methodology is clear and the methods are well described. The results show an improvement in the model performance after the emission inversion (and concentration estimation in the case of the LETKF). The results are well explained, and the discussion and conclusions are in agreement with the data displays. I recommend the publication of the manuscript.

Citation: https://doi.org/10.5194/acp-2021-473-RC1
RC2: 'Comment on acp-2021-473', Anonymous Referee #2, 13 Aug 2021

The comment was uploaded in the form of a supplement: https://acp.copernicus.org/preprints/acp-2021-473/acp-2021-473-RC2-supplement.pdf

Citation: https://doi.org/10.5194/acp-2021-473-RC2
AC1: 'Comment on acp-2021-473', Shelley C. van der Graaf, 10 Oct 2021

Dear editor and referees, thank you for your valuable comments. The response of the authors is written out in the attached pdf file.

Citation: https://doi.org/10.5194/acp-2021-473-AC1

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision | EF: Editorial file upload

AR by Shelley C. van der Graaf on behalf of the Authors (10 Oct 2021) Author's response Author's tracked changes Manuscript

ED: Publish subject to minor revisions (review by editor) (11 Oct 2021) by Joshua Fu

AR by Shelley C. van der Graaf on behalf of the Authors (11 Oct 2021) Author's response Author's tracked changes Manuscript

ED: Publish as is (29 Nov 2021) by Joshua Fu

AR by Shelley C. van der Graaf on behalf of the Authors (02 Dec 2021)

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Short summary

CrIS NH₃ satellite observations are assimilated into the LOTOS-EUROS model using two different methods. In the first method the data are used to fit spatially varying NH₃ emission time factors. In the second method a local ensemble transform Kalman filter is used. Compared to in situ observations, combining both methods led to the most significant improvements in the modeled concentrations and deposition, illustrating the usefulness of CrIS NH₃ to improve the spatiotemporal distribution of NH₃.

Data assimilation of CrIS NH3 satellite observations for improving spatiotemporal NH3 distributions in LOTOS-EUROS

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Data assimilation of CrIS NH₃ satellite observations for improving spatiotemporal NH₃ distributions in LOTOS-EUROS