Simulations of Mideast transboundary ozone transport: A source apportionment case study

E. Weinroth*, M. Luria, C. Emery, A. Ben-Nun, R. Bornstein, J. Kaplan, M. Peleg, Y. Mahrer

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

The Regional Atmospheric Modeling System (RAMS), Comprehensive Air Quality Model with Extensions (CAMx), and a new emissions inventory were used to study O3 formation downwind from the Israeli coast during summer 1997. While RAMS reproduced the observed diurnal variation of surface wind speeds and temperatures reasonably well, directions were somewhat less correlated. CAMx generally also reproduced the timing, location, and magnitude of measured surface and 300-m O3 max over Jerusalem, but also showed an even larger concurrent max over western Jordan, an area without observations. Observed near-zero nighttime surface O3 values, however, were over predicted because the CAMx grid was too large to accurately account for local emissions and titration effects. CAMx also generally accurately predicted another observed 300 m local max near the Dead Sea, but could not account for a unique O3 depletion mechanism from bromine monoxide released from its water surface. Factor-separation analysis showed that transportation emissions produced 66% and 29% of the Jerusalem and Jordan 300-m simulated maxima, respectively, while power plant emissions produced about 35% and 62%, respectively.

Original languageEnglish
Pages (from-to)3700-3716
Number of pages17
JournalAtmospheric Environment
Volume42
Issue number16
DOIs
StatePublished - May 2008

Keywords

  • Air quality modeling
  • Atmospheric chemistry
  • Emissions modeling
  • Mesoscale meteorology
  • Model evaluation

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