Evaluating the performance of an integrated CALPUFF-MM5 modeling system for predicting SO2 emission from a refinery

Sabah Ahmed Abdul-Wahab*, Sappurd Ali, Sabir Sardar, Naseem Irfan, Ali Al-Damkhi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)


Oil refineries are one of the proven sources of environmental pollution as they emit more than 100 chemicals into the atmosphere including sulfur dioxide (SO2). The dispersion patterns of SO2 from emissions of Sohar refinery was simulated by employing California Puff (CALPUFF) model integrated with state of the art meteorological Mesoscale Model (MM5). The results of this simulation were used to quantify the ground level concentrations of SO2 in and around the refinery. The evaluation of the CALPUFF and MM5 modeling system was carried out by comparing the estimated results with that of observed data of the same area. The predicted concentrations of SO 2 agreed well with the observed data, with minor differences in magnitudes. In addition, the ambient air quality of the area was checked by comparing the model results with the regulatory limits for SO2 set by the Ministry of Environment and Climate Affairs (MECA) in Oman. From the analysis of results, it was found that the concentration of SO2 in the nearby communities of Sohar refinery is well within the regulatory limits specified by MECA. Based on these results, it was concluded that no health risk, due to SO2 emissions, is present in areas adjacent to the refinery.

Original languageEnglish
Pages (from-to)841-854
Number of pages14
JournalClean Technologies and Environmental Policy
Issue number6
Publication statusPublished - Dec 2011


  • CALPUFF modeling system
  • MM5
  • Refinery
  • Sohar
  • Sulfur dioxide

ASJC Scopus subject areas

  • Economics and Econometrics
  • General Business,Management and Accounting
  • Management, Monitoring, Policy and Law
  • Environmental Engineering
  • Environmental Chemistry


Dive into the research topics of 'Evaluating the performance of an integrated CALPUFF-MM5 modeling system for predicting SO2 emission from a refinery'. Together they form a unique fingerprint.

Cite this