Monitoring atmospheric composition & climate

Observations (OBS)

The principal purpose of OBS sub-project is to link to existing observational infrastructure and acquire the observational data needed for use in the MACC-II production systems.  The OBS sub-project will draw predominantly on established capacities, especially under existing organisational mandates, to ensure operational capability and continity.

The main tasks of the OBS sub-project are:

  • To identify existing databases and observational infrastructure, by evaluating the relevance of the existing data flows for operational MACC-II use and their possible compliance with INSPIRE nad WIS standards;
  • To operationalize the data transmission and data exchange, by linking to existing databases and securing access to data for the global and regional production systems;
  • To evaluate the use of new satellite products as they become available, by carrying out some initial testing of the satellite products against existing NRT in situ observations;
  • To prepare feedback to the observation data providers, bt drawing on the experience gained from data use in MACC-II's global and regional data assimilation systems.

The OBS sub-project will acquire the required NRT in situ and satellite data that are not already provided through the mechanisms established for numerical weather prediction.  Data avaialble only in delayed-mode and reprocessed versions of data originally acquired in near-real time will also be acquired for use in MACC-II's delayed mode and reanalysis production streams.  The OBS sub-project will linkto and seek to expand information systems.  This will be done in agreement with the approaches in the EU Communication "Towrads a Shared Environment Information System" (SEIS) and is expected to contribute to the implementation of the INSPIRE directive.

Concerning  in situ data acquisition the work of OBS will liaise as fully as possible with the EEA's in situ data coordination activities, and more widely will act within WMO, GCOS, GEO and other relevant international frameworks to express its requirements for in situ data.  Much progress has been acheived during MACC in linking to regulatory air quality NRT data flows in Europe, and efforts in MACC-II will be addressed also towards enhancing NRT data exchange at global level.  Three MACC-II participants are already members of the WMO Expert Group on NRT Chemical Data Exchange, for example.  OBS will continue to inform the EC of its need for specific in situ observations from systems that are candidates for financial support under Copernicus arrangements for funding observations that are complementary to existing European Union and national efforts.

Concerning, satellite data acquistion, MACC-II through ECMWF has co-operation agreements with both EUMETSAT and ESA on exchange of information and expertise.  This will facilitate the access to satellite data products and the testing of new satellite products within OBS.  EUMETSAT will advise on the access to and interpretation of appropriate products from its Ozone and Atmospheric Chemistry Monitoring SAF, from its Land and Surface Analysis SAF and from its core ground-segment processing.  The World Data Centre for Remote Sensing of the Atmosphere (WDC-RSAT) hosted by DLR (and coordinated by ICSU) offers atmospheric satellite observations to the international scientific community and is under implementation also as WMO-GAW satellite data centre in support of the IGACO strategy.  WDC-RSAT provides information on available atmospheric and related surface satellite observations and continues to update this overview.  Based on this information collection and regular contacts with the respective data providers DLR will provide advice on the potebtial new satellite products and their accessibility with regard to the MACC-II objectives.

To acheive its objectives, OBS has been structured into six work packages.  Each work package is broken down into a number of tasks.  The details of the individual tasks are covered in the tables below.  The structure of the work packages follows the logical seperation of the sub-project into Support (WP11, WP12, WP13 and WP14) Research and Development (WP15), and Coordination (WP16).  The efforts within the work packages are distributed evenly between the acquisition of satellite products (WP11 and WP14) and of in situ observations (WP12, WP13 and WP14).  WP16 (Feedback to data providers) coordinates the response from MACC-II operationsl services to both satellite and in situ data providers.  This work package is inherently linked to the operational data assimilation sub-projects both for the global (GDA) and the regional (ENS, EVA) services, but also supports many other sub-projects.  It depends on concrete deliveries from the sub-projects to provide its responses and recommendations to data providers.


Figure 9  Data acquisition and related activities of the OBS sub-project