20 years of (A)ATSR mission available in G-POD
The extension of G-POD capabilities to UK-PAC is hence highly motivated by the addition into the G-POD data portfolio of the EO product archive maintained at UK-PAC (and mainly its 20 years of multi-mission combined (A)ATSR archive), bringing G-POD computing elements close to this archive with high accessibility bandwidth to offer the possibility to process it to higher level products following the G-POD concept.
G-POD at UK-PAC is already available for CAT-1 projects willing to process (A)ATSR data. Scientists are welcome to propose their CAT-1 projects in that context in accordance with existing procedures: CAT-1 proposal and G-POD call of opportunities. After a successful deployment, the G-POD infrastructure installed at UK-PAC can also be used to host operational applications such as for instance the scientific processors implemented through the G-POD CAT-1 opportunity. This operational usage of G-POD is not reflected in the present plan. The sizing requirements of G-POD UK-PAC elements in terms of data storage and processing power will be regularly and carefully assessed globally so as to ensure the global G-POD resource can effectively support in parallel all requirements of all its hosted operational applications.
This project accounts for the utilisation via G-POD of the Along Track Scanning Radiometer multi-mission dataset as a result of the "consolidation" work done by Rutherford Appleton Laboratory (RAL) and currently published on-line via MERCI. Therefore, more than 20 years of continuous acquisition are on-line for G-POD hosted processing. The table below gives an overview of the current dataset.
G-POD CAT-1 description text shall be soon updated to reflect the new datasets put at disposal, in particular the multi-mission ATSR archive (ERS-1 ATSR, ERS-2 ATSR-2, Envisat AATSR).
A set of initial services have been selected to promote usage of the G-POD with ATSR data archive maintained at UK-PAC. Here is a overview of those services:
This service implements a new method for retrieving surface reflectance and aerosol optical depth from AATSR ATS_TOA_1P data. Although this approach has already been extensively tested and implemented regionally, the use of the high performance computing facility allows performing large-scale processing with high data throughput at global scales. The result will be a five-year time-series of global estimates of land and atmosphere products derived from the AATSR data archive.
The Vomir service provides the radiances of the volcanoes reported at different wavelengths together with quick-look images enabling the near-real-time monitoring of the volcanic activity.
Land surface temperature (LST) is a key parameter in the physical study of atmosphere-land interactions, hydrological, mass and energy balances, sensible and latent heat fluxes as well as for global warming and climate change monitoring on a larger timescale. The main tool to obtain land surface temperature as such a key parameter at global scale with different spatial and temporal resolutions is remote sensing in the thermal infrared region.