ACSIS will make use of a number of novel EO based records delivered by members of NCEO to provide basin scale information on aerosol, clouds, ozone and methane. Cloud and aerosol properties are retrieved from the Along-Track Scanning Radiometers (ATSR-2/AATSR) and available from 1995-2012. The Sea and Land Surface Temperature Radiometer (SLSTR) on Sentinel-3 will continue the ATSR heritage, with a nominal launch date in 2016. Interim records will be derived from the Advanced Very High Resolution Radiometer (AVHRR) and the Moderate Resolution Imaging Spectroradiometer (MODIS). Ozone profiles spanning the troposphere and stratosphere are retrieved from a series of nadir-viewing uv spectrometers and available from 1995 onwards. Methane concentrations are retrieved from the Infrared Atmospheric Sounding Interferometer (IASI) on MetOp satellites from 2007 onwards. The cloud, aerosol and ozone records are all produced for ESA's Climate Change Initiative (CCI) (see http://cci.esa.int/).
High quality sea surface temperature records derived from AVHRR and ATSR under the auspices of ESA's CCI project (v1.1) will also be analysed as part of ACSIS. These will be supplemented by global long-term records derived from microwave observations (Microwave Optimal Interpolation SST v4.0), which are able to penetrate cloud. Moving forwards, updated CCI products (v2) will become available from 2017 and will include the extension of the record from its current start date of 1991 backwards in time to 1981 using AVHRR.
More details concerning the available products can be found in the table below.