Preprints
https://doi.org/10.5194/egusphere-2023-1245
https://doi.org/10.5194/egusphere-2023-1245
26 Jul 2023
 | 26 Jul 2023

Expanding the simulation of East Asian Super Dust Storm: Physical transport mechanism impacting the Western Pacific

Steven Soon-Kai Kong, Saginela Ravindra Babu, Sheng-Hsiang Wang, Stephen M. Griffith, Jackson Hian-Wui Chang, Ming-Tung Chuang, Guey-Rong Sheu, and Neng-Huei Lin

Abstract. Dust models are widely applied over the East Asian region for the simulation of dust emission, transport and deposition. However, due to the uncertainties in estimates of dust flux, these methods still lack the necessary precision to capture the complexity of transboundary dust events. This study demonstrates an improvement in the Community Multiscale Air Quality (CMAQ) model dust treatment during long-range transport of dust from northwest China to the South China Sea (SCS). To accomplish this, we considered a super dust storm (SDS) event in March 2010, and evaluated the dust scheme by including adjustments to the recent calibration (Dust_Refined_1) and bulk density (Dust_Refined_2) refinements individually and in combination (Dust_Refined_3). The Dust_Refined_3 normalized mean bias of PM10 was -30.73 % for the 2010 SDS event, which was lower compared to Dust_Refined_1 (-41.34 %) and Dust_Refined_2 (-50.09 %). Indeed, the Dust_Refined_3 improved the simulated AOD value during significant dust cases, for instance, in March 2005, March 2006 and April 2009. Dust_Refined_3 also showed more clearly that in March 2010, a 'double plume' (i.e., one plume originated from the Taiwan Strait and the other from the Western Pacific) separated by the Central Mountain Range (CMR) of Taiwan Island affected dust transport on Dongsha Island in the SCS. On 15–21 April 2021, both CMAQ simulations and satellite data highlighted the influence of typhoon ‘Surigae’ on dust transport to downwind Taiwan and the Western Pacific Ocean (WPO). The CMAQ Dust_Refined_3 simulations further revealed a large fraction of dust aerosols were removed over WPO due to typhoon ‘Surigae’. Hence, the model indicated near-zero dust particle concentration over the WPO, which was significantly different from previous dust transport episodes over the Taiwan region. Therefore, our study suggested an effective method to improve dust management of CMAQ under unique topographical and meteorological conditions.

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Journal article(s) based on this preprint

24 Jan 2024
Expanding the simulation of East Asian super dust storms: physical transport mechanisms impacting the western Pacific
Steven Soon-Kai Kong, Saginela Ravindra Babu, Sheng-Hsiang Wang, Stephen M. Griffith, Jackson Hian-Wui Chang, Ming-Tung Chuang, Guey-Rong Sheu, and Neng-Huei Lin
Atmos. Chem. Phys., 24, 1041–1058, https://doi.org/10.5194/acp-24-1041-2024,https://doi.org/10.5194/acp-24-1041-2024, 2024
Short summary
Steven Soon-Kai Kong, Saginela Ravindra Babu, Sheng-Hsiang Wang, Stephen M. Griffith, Jackson Hian-Wui Chang, Ming-Tung Chuang, Guey-Rong Sheu, and Neng-Huei Lin

Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on egusphere-2023-1245', Anonymous Referee #1, 06 Sep 2023
  • RC2: 'Comment on egusphere-2023-1245', Ian Chang, 02 Oct 2023

Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on egusphere-2023-1245', Anonymous Referee #1, 06 Sep 2023
  • RC2: 'Comment on egusphere-2023-1245', Ian Chang, 02 Oct 2023

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision | EF: Editorial file upload
AR by Steven Soon-Kai Kong on behalf of the Authors (30 Oct 2023)  Author's response   Author's tracked changes   Manuscript 
ED: Referee Nomination & Report Request started (09 Nov 2023) by N'Datchoh Evelyne Touré
RR by Anonymous Referee #1 (13 Nov 2023)
RR by Ian Chang (16 Nov 2023)
ED: Publish subject to minor revisions (review by editor) (21 Nov 2023) by N'Datchoh Evelyne Touré
AR by Steven Soon-Kai Kong on behalf of the Authors (22 Nov 2023)  Author's response   Author's tracked changes   Manuscript 
ED: Publish as is (07 Dec 2023) by N'Datchoh Evelyne Touré
AR by Steven Soon-Kai Kong on behalf of the Authors (07 Dec 2023)  Manuscript 

Journal article(s) based on this preprint

24 Jan 2024
Expanding the simulation of East Asian super dust storms: physical transport mechanisms impacting the western Pacific
Steven Soon-Kai Kong, Saginela Ravindra Babu, Sheng-Hsiang Wang, Stephen M. Griffith, Jackson Hian-Wui Chang, Ming-Tung Chuang, Guey-Rong Sheu, and Neng-Huei Lin
Atmos. Chem. Phys., 24, 1041–1058, https://doi.org/10.5194/acp-24-1041-2024,https://doi.org/10.5194/acp-24-1041-2024, 2024
Short summary
Steven Soon-Kai Kong, Saginela Ravindra Babu, Sheng-Hsiang Wang, Stephen M. Griffith, Jackson Hian-Wui Chang, Ming-Tung Chuang, Guey-Rong Sheu, and Neng-Huei Lin
Steven Soon-Kai Kong, Saginela Ravindra Babu, Sheng-Hsiang Wang, Stephen M. Griffith, Jackson Hian-Wui Chang, Ming-Tung Chuang, Guey-Rong Sheu, and Neng-Huei Lin

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Short summary
In this study, we combined ground observations from the 7-SEAS Dongsha Experiment, MERRA-2 reanalysis, and MODIS satellite images for evaluation and improvement of the CMAQ dust model for cases of EAD reaching the Taiwan region, including Dongsha Island in the western Pacific. We proposed a better CMAQ dust treatment over East Asia and first time revealed the impact of Typhoons on dust transport.