MACC-II (Monitoring Atmospheric Composition
 and Climate - Interim Implementation), an EU-funded project, combines 
state-of-the-art atmospheric modelling on global and European scale with
 Earth observation data to provide high quality environmental 
information services. It covers European air quality, global atmospheric
 composition, climate forcing, the ozone layer and UV radiation, and 
solar energy.
MACC-II is the third in a series of projects funded by the European 
Commission and the European Space Agency with the aim of establishing 
the atmospheric service of the European Earth observation programme 
Copernicus.
The MACC-II project is now in its final few months and the 
Copernicus Atmosphere monitoring service is in pre-operational mode, 
providing continuous data and information on atmospheric composition. 
The service details the current situation, forecasts the situation a few
 days ahead, and analyses consistently retrospective data records for 
recent years.
MACC-II combines satellite and in situ observations with advanced 
numerical models to develop products such as five-day forecasts of 
global atmospheric composition and four-day forecasts of European air 
quality.
During the wildfires in south-east Europe in August 2012, for 
example, MACC-II used a real-time wildfire detection system based on 
satellite observations to estimate the amount of smoke particles 
released into the atmosphere. This information was then used in a 
forecasting model to predict the extent of the smoke plume for the next 
few days.
MACC-II also provides the solar energy industry, the electricity 
sector, governments, and renewable energy organisations and institutions
 with suitable and accurate information of the solar radiation resources
 at the Earth's surface.
Furthermore, it supports studies of pollution events and possible 
responses to mitigate their effects, providing annual assessments of air
 quality, and monitoring greenhouse gases and their sources and sinks at
 the Earth's surface.
Led by the European Centre for Medium Range Weather Forecasts 
(ECMWF), the project involves 36 partners from 13 countries. It is 
thought to be one of the few projects of its kind worldwide.
Users from most countries in the world already access MACC-II products, which are freely available at 
http://atmosphere.copernicus.eu. MACC-II will run until July 2014, when the operational phase of Copernicus is expected to start.
Source: MACC-II
Reference documents: Based on information from MACC-II