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

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.