4. Software Installation¶
This chapter describes the overall S3-SNOW software installation procedure.
4.2. Usage Requirements¶
4.2.1. General Requirements¶
The S3-SNOW and SICE processors require SNAP in the latest release version (v7.0.0), which is available for all platforms (Windows, Linux, MacOS) from the SNAP website (step.esa.int).
4.2.2. Operating System¶
The S3-SNOW software can be run on any operating system which is suppported by SNAP (Windows, Linux, MacOS).
4.2.3. Hardware Requirements¶
The S3-SNOW / SICE processing system is a complex piece of software. Although the algorithms for the snow properties retrieval are mostly relatively simple, the effort for data input/output is fairly high in case of full resolution OLCI products. Therefore, up-to-date and sufficiently powerful and dimensioned hardware is strongly recommended for reliable and convenient processing.
4.3. Contents of the S3-SNOW / SICE Processing Software Bundle¶
The S3-SNOW / SICE processing software consists of the following components:
- s3tbx-snow-3.0.nbm: nbm plugin file
- snap-slope-1.0.nbm: nbm plugin file
- GIMP Digital Elevation Model for Greenland: GeoTIFF auxiliary file
Processors for Rayleigh correction and for IdePix pixel classification are included in the SNAP software. The Rayleigh correction processor is installed automatically as part of the SNAP installation, the IdePix processor for OLCI needs to be installed from the plugin manager in SNAP Desktop (described in more detail below).
4.4. How to get the Software¶
The S3-SNOW processing software bundle can be obtained from the S3-SNOW ftp site hosted at BC. As web browsers have dropped the support for FTP, it is suggested to use an FTP Client, like FileZilla or WinSCP. Use the following configuration:
- SFTP @ Port 22; FTP @ Port 21
- username: s3snow
- password: $3Sn0W@bc
- subdirectory: software/s3snow_sice
4.5. Installation Steps¶
4.5.1. Installation of the SNAP Software¶
Download SNAP (Unix version) from the SNAP web site  and follow the information and instructions for installation given there.
4.5.2. Installation of the S3-SNOW Processor modules¶
Once SNAP has been installed, the installation of all NBM plugin files needs to be done from the ‘Plugins’ toolwindow in the SNAP Desktop application. This is illustrated in the figure sequence Figure 4.1 to Figure 4.4.
After restart of SNAP, the installed processors will be available from their dedicated menu entries. This will be shown in more detail in the next chapter.