continental and global distribution of pm
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Continental and Global Distribution of PM
Contact: Rudolf Husar, rhusar@mecf.wustl.edu
•Global Pattern of Haze Based on Visibility Data
•Resource Links
Global Pattern of Haze Based on Visibility Data
• A rough indicator of PM2.5 concentration is the extinction coefficient corrected for weather conditions and humidity. There are over 7000 qualified surface-based visibility stations.
• The June-August haze is most pronounced in Southeast Asia and over Sub-Saharan Africa, where the seasonal average PM2.5 is estimated to be over 50 g/m3.
• Interestingly, the industrial regions of the world such as over Eastern North America, Europe and
China-Japan exhibit only moderate levels of haze.
Resource Links
• Workbook Table of Contents
• Comment and Feedback Page
• Applications / Reports
• Data sets used in the Applications
• Methods and tools used in the Applications
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