Monitoring atmospheric composition & climate

The major goal of this sub-project is to continue with demonstration and evaluation activities for the core service lines related to radiation.  This includes global UV irradiance monitoring and forecasts and multi-continental solar irradiance databases providing time series based on an on-request access to long-term data sets and NRT information targeted at solar energy applications.

It has to be noted in the following sub-project description that 'global irradiance' is meant as an irradiance quantity and as providing irradiance on a global spatial scale.  Global and direct irradiances are provided for Europe, Africa, the Middle East and Asia as defined by the Meteosat field of view.

This work package builds on experience gained within the GEMS, ENVISOLAR (ESA Earth Observation Market Development program), MESoR (FP6) and MACC projects and links to the International Enery Agency Task 36 on Solar Resource Knowledge Managment.  Additional links are set up to the COST ES1002 action dealing with "Short-Term High Resolution Wind and Solar Energy Production Forecasts".

A high-quality system of global UV monitoring constitutes a valuable tool to provide global coverage for UV impact studies.  It is equally important to have UV forecasting capabilities to produce global UV forecasts that are disseminated to the public.  The UV monitoring and forecasting system within the ECMWF IFS system will be further improved and evaluated in MACC-II.   The manin objective of UV evaluation work will be to assess the UV processor against an extensive set of ground-based measurements always when a new version beomes available.  By repeating the evaluation, after each incremental change in the processor, the influence of each improvement can be best followed and assessed.  The main focus will be on aerosol and snow/ice surface-albedo effects on UV.  For instance, during MACC a new aerosol scheme is being implemented by the AER sub-project and this will replace the earlier one that was developed in GEMS.  During the first year of MACC-II its performace, when coupled with the UV processor, will be throughly evaluated.

With regard to renewable energies, the service will meet the needs of European and national policy development and the requirements of (generally commercial) downstream services (e.g. planning, monitoring, efficiency improvements, integration into ebergy supply grids), such as those to be implemented by the ENDORSE (Energy Downstream Services) FP7 project.  These requirements have been documented by several means in the precusor projects such as ENVISOLAR and the SoDa FP5 project.  The SOLEMI service (operated by MACC-II partner DLR) and the SoDa service (operated by MACC-II partner ARMINES) have been specifically developed in several national, European and ESA projects to fulfil the requirements for long-term databases and NRT services.  Their routine operation is already established under funding seperate from MACC, but is envisaged that the SOLEMI service and the HelioClim database accessible via the SoDa data portal will become elements of the post-MACC-II partners ARMINES and DLR in close collaboration.

Further stabilization of processing chains, international collaboration to furthr elaborate processing standards, development of a MACC-RAD information system, regular QC/validation procedures and the inclusion of Meteosat Second Generation capabilities in a Heliosat-4 irradiance service chain will be the focus of RAD.

A solar energy specific irradiance forecasting component is currently an issue of research in other dedicated projects and likewise is expected to be included in the Copernicus atmospheric service in future.  Therefore, an assessment of the current irradiance forecasting capabailities  of ECMWF IFS system is planned.

Given these objectives, several tasks have been identified and will be treated in seperate work packages.  Coordination activities will take place in work package WP121, while support and service activities are dealt with in WP122.  WP123 is dedicated towards joint research and development activities.