A LONG-RANGE ATMOSPHERIC TRANSPORT MODEL (HY-SPLIT) FOR ENVIRONMENTAL EMERGENCY RESPONSE (EER): EVALUATION OF DRIVING MODELS

Authors

  • J.H Vermeulen South African Weather Service, Private Bag X097, Pretoria 0001
  • M.T Freiman Climatology Research Group, University of the Witwatersrand, P.O WITS 2050, Johannesburg

DOI:

https://doi.org/10.17159/caj/2003/13/1.7149

Abstract

The Eta and Aviation (AVN) driving models of HY-SPLIT are evaluated by means of a case study of the sulphur fire plume at Somerset West (34° 04’ S, 18° 48’ E) which caused sulphur dioxide (SO2) air pollution over Macassar on 16 - 17 December 1995. The HY-SPLIT model is verified by comparing it with the Lagrangian kinematic trajectory (LKT)
model. Plume dispersions and depositions of the HY-SPLIT model for the Eta and AVN driving models are compared with Eta model winds. Eta model winds for a grid point close to the fire are verified against radiosonde data and synoptic observations. Results indicate that the finer-resolution regional Eta model has the higher accuracy.

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Published

2003-06-03

Issue

Vol. 13 No. 1 (2003): Clean Air Journal

Section

Research Article

License

Creative Commons License
All articles are published under a Creative Commons Attribution 4.0 International License; copyright is retained by the authors. Readers are welcome to reproduce, share and adapt the content without permission provided the source is attributed.

How to Cite

A LONG-RANGE ATMOSPHERIC TRANSPORT MODEL (HY-SPLIT) FOR ENVIRONMENTAL EMERGENCY RESPONSE (EER): EVALUATION OF DRIVING MODELS. (2003). Clean Air Journal, 13(1). https://doi.org/10.17159/caj/2003/13/1.7149