Several important initiatives have been undertaken over the last years aiming at generating high-quality long-term data series of Essential Climate Variables (EVCs).
In the atmospheric domain, BIRA-IASB has been involved in several such activities, with a focus on establishing new high-quality standards for the monitoring of key climate-related species such as:
- green-house gases (CO2 and CH4)
- ozone and aerosols
- their precursors, NO2, HCHO and SO2
These activities are being developed in the framework of important international programmes and projects, such as:
- ESA Climate Change Initiative (CCI)
- Copernicus Climate Change Service (C3S)
- EU projects QA4ECV and GAIA-CLIM.
In all these projects, a strong focus is put on the generation of highly accurate data series of observations derived from multiple satellite sensors, allowing for improved determination of the long-term variability and trends in key atmospheric variables (see e.g. Figure 1). This also implies the development of advanced quality assurance frameworks allowing for in-depth assessment of uncertainties and full traceability in data production and delivery.