- The Mega-cities: Asia Task Team facilitated better coordination between groups making measurements of aerosols and oxidants in and around large cities in Asia. Their activities included maintaining a centralized web page; holding periodic workshops to increase communication between research groups; organizing instrument intercomparisons; and facilitating collaborative publications. The large-scaled, coordinated measurements of aerosols and oxidants in megacities in Asia provided the necessary observations to make the link between source emissions and regional-scale air quality and climate impacts. The results of Megacity Asia are summarized in the Asia chapter of IGAC/WMO report on The Impacts of Megacities on Air Pollution and Climate.