WMO Releases Publication on the Impact of Aerosol Pollution on Precipitation

World Meteorological Organization 26 November 2008: The World Meteorological Organization (WMO) will release, on 28 November 2008, a new international scientific review entitled “Aerosol Pollution Impact on Precipitation,” published jointly with the International Union for Geodesy and Geophysics. The book examines the state of scientific knowledge on the way air pollutants, particularly tiny particles called aerosols, affect global weather and climate patterns.

Aerosols can be produced naturally or as the result of anthropogenic

activity. Once released in the air, they impact the atmosphere in

various ways. Understanding how aerosols can shift the global water

cycle is critical for weather forecast and climate models, as

inaccurate representations of aerosols and other pollutants in

meteorological models hinder efforts to provide policy-makers the

best-available weather and climate planning tools.

The publication

provides a comprehensive gap-analysis in knowledge on the way aerosol

pollution disrupts precipitation formation. It formulates

recommendations on how States and international organizations can fill

the identified gaps and translate this knowledge into more powerful

decision-making tools. [WMO Press Release]