Modeling volcanic ash aggregation processes and  related impacts on the April–May 2010 eruptions  of Eyjafjallajökull volcano with WRF-Chem

Egan, Sean D.; Stuefer, Martin; Webley, Peter W.; Lopez, Taryn; Cahill, Catherine F.; Hirtl, Marcus

doi:https://doi.org/10.5194/nhess-20-2721-2020

Articles | Volume 20, issue 10

https://doi.org/10.5194/nhess-20-2721-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

Analysis and prediction of natural airborne aviation hazards

https://doi.org/10.5194/nhess-20-2721-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 20, issue 10

Research article

|

17 Oct 2020

Research article |

| 17 Oct 2020

Modeling volcanic ash aggregation processes and related impacts on the April–May 2010 eruptions of Eyjafjallajökull volcano with WRF-Chem

Sean D. Egan, Martin Stuefer, Peter W. Webley, Taryn Lopez, Catherine F. Cahill, and Marcus Hirtl

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Final revised paper (published on 17 Oct 2020)
Preprint (discussion started on 06 Dec 2019)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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- Supplement

RC1: 'Review on "Modeling volcanic ash aggregation processes and related impacts on the April/May 2010 eruptions of Eyjafjallajökull Volcano with WRF-Chem" by Sean D. Egan, Martin Stuefer, Peter W. Webley, Taryn Lopez, Catherine F. Cahill, and Marcus Hirtl', Anonymous Referee #1, 23 Dec 2019
- AC1: 'Replies to Referee One', Sean Egan, 27 Mar 2020
RC2: 'Review of “Modeling volcanic ash aggregation processes and related impacts on the April/May 2010 eruptions of Eyja Volcano with WRF-Chem.”', Anonymous Referee #2, 30 Jan 2020
- AC2: 'Reply to Referee Two', Sean Egan, 27 Mar 2020

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

ED: Publish subject to minor revisions (review by editor) (28 Mar 2020) by Lucia Mona

AR by Sean Egan on behalf of the Authors (07 Apr 2020) Author's response Manuscript

ED: Publish as is (23 Jun 2020) by Lucia Mona

AR by Sean Egan on behalf of the Authors (02 Jul 2020) Manuscript

Short summary

The Weather Research Forecasting with Chemistry (WRF-Chem) model was modified to include volcanic ash aggregation. The modified WRF-Chem model was run with and without aggregation, and changes in the model output were measured. Changes in the lifetime of volcanic ash a function of the chosen fractal dimension were quantified. A case study using the 2010 eruptions of Eyjafjallajökull revealed that the aggregation modifications result in tephra fallout and ash concentrations near observed values.