Atmospheric aerosols (troposheric and stratospheric) are of great importance to Copernicus because of their impacts on human health, visibility, the Earth's climate, the stratospheric ozone layer, and continental and maritime ecosystems, requring deicated monitoring of their concentrations and properties at European and global scales.
The objectives of the AER sub-project are to build upon the GEMS and MACC projects to further improve and operationalize our global aerosol services. We aim to provide a comprehensive picture od aerosol properties through a number of avaialble monitoring tools.
The global aerosol forecasting and analysis are being produced centrally in the GDA sub-project but rely on model maintenance and development carried out in the AER sub-project (WP62). The centralised aerosol analyses and forecasts performed by ECMWF are complemented by decentralised aerosol monitoring services (WP63). These include four NRT streams of satellite aerosol products (SEVIRI over land and ocean, CALIOP, AATSR, and SYNAER), one delayed stream of satellite aerosol product (AIRS/IASI) and an independent NRT dust forecast. The rationale for a second dust forecast in MACC-II and participation in the European and North African Node of the WMO Sand and Dust Storm Warning and Advisory Service is beacuse of the necessity to investigate the benefit of high-resolution on the dust source prediction and to sample uncertainties due to imperfect knowledge of the meteorology in the North Africa region. The production service for satellite retrievals is supported by a research effort (WP64) which also assesses the quality and suitability of the aerosol products for data assimiliation. Data assimiliation is now seen as an integral part of the system development and is the focus of WP65. Finally we continue the aerosol services developed in MACC on aerosol radiative forcing monitoring and aerosol source inversion requested by the call for proposals. We also perform the research to implement a new service on a global aerosol alert system (WP66 and WP67).
The AER sub-project is well integrated with the GDA sub-project (production of the core aerosol forecast analysis), the GRG sub-project, the VAL sub-project (to where the validation of the aerosol forecast and analysis has been moved) and the air-quality sub-projects (for provision of boundary conditions).