Affordable Access

Access to the full text

Dispersion Modelling of the Kilauea Plume

Authors
  • Hollingshead, Annette T.1
  • Businger, Steven2
  • Draxler, Roland3
  • Porter, John1
  • Stevens, Duane1
  • 1 University of Hawaii, Honolulu, HI, 96822, U.S.A , Honolulu
  • 2 Department of Meteorology, 2525 Correa Rd, Honolulu, HI, 96822, U.S.A , Honolulu
  • 3 NOAA Air Resources Laboratory, Silver Springs, MD, 20910, U.S.A , Silver Springs
Type
Published Article
Journal
Boundary-Layer Meteorology
Publisher
Kluwer Academic Publishers
Publication Date
Jul 01, 2003
Volume
108
Issue
1
Pages
121–144
Identifiers
DOI: 10.1023/A:1023086823088
Source
Springer Nature
Keywords
License
Yellow

Abstract

Emissions from the Kilauea volcano pose significant environmental and health risksto the Hawaiian community. This paper describes progress toward simulating theconcentration and dispersion of plumes of volcanic aerosol after they emanate from thePu'u O'o vent of the Kilauea volcano. In order to produce an accurate regional forecast of the concentration and dispersionof volcanic aerosol, the Hybrid Single-Particle Lagrangian Integrated Trajectory(HY-SPLIT) model was used. Wind fields and thermodynamic data from the non-hydrostatic Mesoscale Spectral Model (MSM) were employed as input for theHY-SPLIT model. A combination of satellite remote sensing, aircraft, and ground-based observations collected during a field experiment was used to validate the model simulation of aerosol distribution. The HY-SPLIT model shows skill in reproducing the plume shape, orientation, and concentration gradients as deduced from satellite images of aerosol optical depth.Comparison of the modelled and observed values suggests that the model was able to produce reasonable plume concentrations and spatial gradients downwind of the source. Model concentrations were generally less than those observed on the leeward side of the Island of Hawaii. This deficiency may be explained by a lack of (i) background concentrations, (ii) local sources of pollution and/or (iii) sea-breeze circulation in the prognostic input wind field. These results represent early progress toward the goal of future operational application of the HY-SPLIT model to predict volcanic aerosol concentrations in Hawaii. This may help mitigate their negative impacts of plumes respiratory health, agriculture, and general aviation.

Report this publication

Statistics

Seen <100 times