A set of standardised aggregation methods to produce an ensemble of aerosol optical depth observations.
Over a rectilinear latitude-longitude grid (currently, taken from UKESM1), this calculates, for two wavelengths of aerosol optical depth the,
- Joint distribution over 44 bins roughly log-spaced between 0 and 5,
- Maximum observed aerosol optical depth,
- Mean;
- Mean of the base-10 logarithm. The precise wavelengths vary by instrument but aim to be 550 and 670 nm, with 440 nm substituting the later when unavailable.
The code currently supports the following datasets:
- Three datasets for AATSR and ATSR-2 developed by the European Space Agency's Aerosol CCI program:
- ATSR Dual View (ADV), from the Finish Meteorological Institute;
- Swansea University's (SU) retrieval, which is used operationally by the Copernicus Climate Change Service;
- Optimal Retrieval of Aerosol and Cloud (ORAC), from the University of Oxford, RAL Space, and others.
- Three datasets for MODIS Terra and Aqua funded by NASA:
- Dark Target;
- Deep Blue;
- MAIAC.
To Do:
- Remove the hard-coded paths.
- Complete code to determine the number of pixels observed by each sensor.
- Fit bi-log-normal distributions to the histograms.
- Convert current
npz
output files into CF-compliant netCDF files. - Implement additional algorithms that are currently available on JASMIN:
- Deep Blue for AVHRR and SeaWIFS;
- The AVHRR product released by FIDUCEO;
- MISR v23.