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Climate change is calling for a responsible management of greenhouse gas (GHG) emissions. The respective international agreements and national GHG reduction measures are based on standardized national emission reports which are informed by economic data and emission modelling. Within the Integrated Global Greenhouse Gas Information System (IG3IS) it is outlined how independent science, based on atmospheric monitoring, can help to improve the general knowledge about the GHG budgets and can demonstrate the effectiveness of GHG reduction measures. Here we show how IG3IS can put into practice for Germany by employing the numerical weather prediction model ICON of the German weather service DWD, with the Copernicus atmospheric monitoring service CAMS as boundary condition. We make use of atmospheric concentration measurements of CH4, CO2, N2O performed operationally at ICOS towers, as well as column information inferred from remote sensing, preparing for future satellites, and incorporate GHG sources and sinks modelling. The challenge is to combine efforts from different branches of atmospheric sciences into an operational service (Integrated greenhouse gas monitoring system for Germany) to assist economic sectors, e.g., industry, traffic and agriculture, to manage their GHG emissions in Germany. [ABSTRACT FROM AUTHOR]

During recent years, Germany's national meteorological service (Deutscher Wetterdienst, DWD) has significantly expanded the open access to its climate observations. A first step was a simple FTP-site with the possibility for downloading archives with various categories of data, e.g. national and international station-based meteorological data, derived parameters, gridded products and special categories as e.g. phenological data. The data are based on the observing systems of DWD for Germany as well as international activities of DWD. To improve the interactive and user-friendly access to the data, a new portal has been developed. The portal serves a variety of user requirements that result from the broad range of applications of DWD's climate data. Here we provide an overview of the new climate data portal of DWD. It is based on a systematic implementation of OGC-based technologies. It allows easy graphical access to the station data, but also supports access via technical interfaces, esp. Web-Map- and Web-Feature-Services. [ABSTRACT FROM AUTHOR]