AIRSPACE Overview
The lack of knowledge about the sources and sinks in the Global Carbon Cycle
on all relevant temporal and spatial scales is currently recognised as the
biggest deficit in understanding the processes of Global Change and
developing solutions for adaptation measures. In order to reliably predict the climate on our planet throughout the 21st century and support attaining emission targets in the framework of international climate agreements, research on the fluxes of the two most important anthropogenic greenhouse gases - carbon dioxide (CO2) and methane (CH4) - is indispensable. Particular significance is
attached to monitoring the atmospheric concentrations of these GHGs, since, based on this information in combination with inverse
modelling techniques, an independent determination of their sources and
sinks becomes possible. Inverse modelling, however, requires the
availability of a sufficient number of highly accurate measurements on
different spatial scales. In contrast to localised point measurements,
airborne remote sensing instruments are particularly suited to provide
regional data that are severely lacking. Therefore, the predominant goal of
this project is to fill the gap in these present inadequacies. In
the frame of the AIRSPACE project a scientific payload consisting of the most
sophisticated remote sensing instruments will be developed and tested, with
support of highly accurate in-situ instruments as well as modelling
activities. Such a comprehensive infrastructure does not yet exist
worldwide. Beyond purely scientific objectives, it can also serve to
validate and independently verify future satellites which are
planned to be deployed to monitor greenhouse gas emissions in the framework
of international climate treaties. In the course of this project a coordinated measurement campaign in the Central European region will take place (CoMet). Within AIRSPACE, the collected data will be exploited, cross-validated, and compared by means of the models. This will already serve as a test to validate satellite products, e.g. the CH4 product of the Sentinel-5P mission of the European Copernicus programme as well a the CO2 product from NASA’s OCO-2 mission. Through successful implementation of the instrumentation and model infrastructure, the project partners will be in a position (a) to apply the method developed for Europe to the highly relevant tropical and arctic source and sink regions, (b) to participate in and contribute to future international projects dedicated to greenhouse gases, and (c) to actively participate in the validation of the French-German climate mission MERLIN (Methane Remote Sensing Lidar Mission). |