Journal cover Journal topic
Natural Hazards and Earth System Sciences An interactive open-access journal of the European Geosciences Union
doi:10.5194/nhess-2016-400
© Author(s) 2017. This work is distributed
under the Creative Commons Attribution 3.0 License.
Research article
05 Jan 2017
Review status
This discussion paper is under review for the journal Natural Hazards and Earth System Sciences (NHESS).
Identification of Atmospheric Transport and Dispersion of Asian Dust Storms
Raegyung Ha1, Amarjargal Baatar2, and Yongjae Yu2 1Department of Astronomy, Space Science, and Geology, Chungnam National University, Daejeon, 34134, Korea
2Department of Geology & Environmental Sciences, Chungnam National University, Daejeon, 34134, Korea
Abstract. Backward trajectories of individual Asian dust storm (ADS) events were calculated using the hybrid single particle Lagrangian integrated trajectory (HYSPLIT) at four representative stations in Korea. A total of 743 ADS events and associated 2229 (endings of altitudes at 1000 m, 1500 m, and 2000 m per ADS event) backward trajectories from four stations were traced from January 2003 to August 2015. Regardless of the locations of the observed stations and the threshold time divide, recent increase of ADS occurrence rate was statistically significant in 99.9 % confidence limit. Winters and springs were high occurrence season for the ADS, while the ADS rarely occurred in summers. Angular distributions of dust transport indicated a dominance of northwesterly, as more than two-thirds of ADS events are azimuthally confined from 290°–340°. In addition, there is a tendency for stronger dust densities to be from the northwest. We found a strong inverse correlation between number of days with ADS events and cumulative dust density, indicating that the total amount of cumulative dust discharge was rather constant over time. If so, relatively shorter transport distance and more continental dust passage through Shandong peninsular would yield less but stronger dust concentration in shorter transport path.

Citation: Ha, R., Baatar, A., and Yu, Y.: Identification of Atmospheric Transport and Dispersion of Asian Dust Storms, Nat. Hazards Earth Syst. Sci. Discuss., doi:10.5194/nhess-2016-400, in review, 2017.
Raegyung Ha et al.
Raegyung Ha et al.
Raegyung Ha et al.

Viewed

Total article views: 33 (including HTML, PDF, and XML)

HTML PDF XML Total BibTeX EndNote
24 9 0 33 0 0

Views and downloads (calculated since 05 Jan 2017)

Cumulative views and downloads (calculated since 05 Jan 2017)

Viewed (geographical distribution)

Total article views: 33 (including HTML, PDF, and XML)

Thereof 33 with geography defined and 0 with unknown origin.

Country # Views %
  • 1

Saved

Discussed

Latest update: 20 Jan 2017
Publications Copernicus
Download
Short summary
A total of 743 Asian Dust Storms (ADS) events from January 2003 to August 2015 were analyzed using backward trajectory HYPLIT models. Spatial distribution of ADS events is prominently northwesterly, as more than two-thirds of ADS events are azimuthally confined at northwestern quadrant. Frequency of ADS and cumulative dust density distribution showed an inverse relation, signifying that total amount of cumulative dust exposure was rather constant over time.
A total of 743 Asian Dust Storms (ADS) events from January 2003 to August 2015 were analyzed...
Share