Regional Scale Air Pollution Rudolf B. Husar Center for Air Pollution Impact and Trend Analysis Washington University, St. Louis, MO, USA 6 th Int. Conf. on Pollution in Metropolitan Cities Kuala Lumpur, Malaysia, March 20-23, 2000

Industrial Sulfur Emission Density The regional hot-spots for industrial sulfur emissions are in E. North America, Europe and E. Asia

NO 2 GOME Satellite Data Burrows et al., 1999 In January, the highest NO 2 values are over northern industrialized regions In September higher NO 2 amounts are due to biomass burning in the Southern Hemisphere

NO 2 GOME Satellite Data Burrows et al., 1999 In January, the highest NO 2 values are over northern industrialized regions In September higher NO 2 amounts are due to biomass burning in the Southern Hemisphere

Total Columnar Ozone Monthly averaged TOMS total ozone for October 1987 showing elevated total ozone over Brazil and southern Africa (Fishman et al, 1990)

Tropospheric Ozone Climatological tropospheric ozone residual show high continental amounts during northern hemisphere summer and plumes at southern subtropics during austral spring (Fishman and Brackett, 1997)

Biogeochemical Processes Producing Aerosols Dust stormsVolcanoes Urban/Industrial Aerosols On global scale dust, smoke and sometimes volcanoes dominate the aerosol pattern. Industrial aerosol is confined to regional hot-spots Fires

Satellite AVHRR optical depth data over the oceans RB Husar et al., 1997, JGR, 102, Note extent and magnitude of elevated optical depth: Winter and Spring: western Africa and China Summer and Fall: northern western Africa and equatorial Africa

POLDER Aerosol Index (Optical Depth) In January, the aerosol burden is highest over West Africa, India and China. In June, high aerosol levels occur over Central Africa, India and China.

SeaWiFS Satellite Image of SE Asia, Dec 1999

Visibility is recorded at stations hourly NOAA NCDC Global Summary of the Day (SOD) Observations

Extinction coefficient for Asia

Extinction Coefficient Contours, km-1, High bext (>0.5km-1) India: year round; Indonesia: fall; W. Africa: winter; Bolivia: fall

Composition of the Indonesian Smoke Aerosol Tsuruta et al.,

Fine and Coarse Particulate Matter Particle Size, micrometer Contact: Rudolf Husar,