Version Notes

The version number is made up of two numbers. The first indicates the major version number. Changes to this number indicate significant changes and improvements to the code, and major changes to the datafiles. The second number, called the minor version, is incremented when there are minor feature changes or notable fixes which do not significantly change how the data products should be used.

V2.0

The current version of the HYPERNETS_PROCESSOR is v2.0. This is the first version that is intended for operational use. This version is described in De Vis et al. (2024a).

Compared to the v1.0, there are a few changes in the v2.0 HYPERNETS_PROCESSOR worth noting, so that any HYPERNETS results using the v1.0 data products can be understood.

  • The first important difference is in the definition of the viewing azimuth angles, which have changed by 180° in order to be consistent with satellite viewing azimuth angles in v2.0 (see Definitions and protocols). The pointing azimuth angles in v2.0 are equal to the viewing azimuth angles in v1.0. Pointing azimuth angles are mainly of interest for the WATERHYPERNET network as it is commonly used (Ruddick et al., 2019, and references therein) to compute the relative azimuth angles.

  • Uncertainty propagation is now consistently applied to all WATERHYPERNET products, in the same way as for the LANDHYPERNET network.

  • Output files and their names have slightly changed, e.g. there are now L0A and L0B files as opposed to only L0 files, and, the relative azimuth angle, used for the approximation of the airwater interface reflection factor within the WATERHYPERNET network, is also added to the L1C and L2A product names.

  • Reflectance files with site specific quality checks applied are called L2B files in v2.0, as opposed to L2A files in v1.0. These are the main files to be distributed.

  • There were many minor changes (e.g. to the metadata and the quality checks) that are not worth noting individually but do make a difference to the produced HYPERNETS products.

V1.0

This version was used to produce the first public dataset on Zenodo.

Beta

This version is described in Goyens et al. (2021)