ARC SST - Processor Description

User Interface

The SST processor can be invoked in the Sentinel Toolbox from the tool menu by selecting Optical->Thematic Water Processing->ARC SST Processing.... On the command line the SST processor is available by means of the Graph Processing Tool gpt which is located in the Sentinel Toolbox bin directory. Typing gpt Arc.SST -h displays further information.

Selecting the ARC SST Processor from the Sentinel Toolbox tool menu pops up the following dialog:

Source Product Group

(A)ATSR or SLSTR: Here the user specifies the source product. The combo box presents a list of all products open in the Sentinel Toolbox. The user may select one of these or, by clicking on the button next to the combo box, choose a product from the file system.

Target Product Group

Name: Used to specify the name of the target product.

Save as: Used to specify whether the target product should be saved to the file system. The combo box presents a list of available file formats. The text field or the button next to it allow to specify a target directory.

Open in SNAP: Used to specify whether the target product should be opened in SNAP. When the target product is not saved, it is opened in SNAP automatically.

Processing Parameters Panel

Total Column Water Vapour: (ATSR-only) Here the user can specify which value of TCWV should be used in the retrieval. This can be a constant or a Band Math expression. This parameter is only used for ATSR inputs. When processing SLSTR data the TCWV is included in the L1 file.

Generate ASDI: Here the processing of Saharan Dust Index can be activated or deactivated.

ASDI coefficient file: Here one of the available coefficient sets for ASDI processing can be selected.

ASDI mask: Here a ROI-mask expression can be defined that will be evaluated during Saharan Dust Index processing.

Generate dual-view SST: Here the processing of dual-view SST can be activated or deactivated.

Dual-view coefficient file: Here one of the available coefficient sets for dual-view processing can be selected.

Dual-view mask: Here a ROI-mask expression can be defined that will be evaluated during dual-view processing.

Generate nadir-view SST: Here the processing of nadir-view SST can be activated or deactivated.

Nadir-view coefficient file: Here one of the available coefficient sets for nadir-view processing can be selected.

Nadir-view mask: Here a ROI-mask expression can be defined that will be evaluated during nadir-view processing.

Invalid SST value: The value written to a target pixel when the pixel is excluded from the ROI or the SST calculation yields an invalid result.

Button Group

Run Creates the target product. The SST processing is actually deferred until its band data are accessed, either by writing the product to a file or by viewing its band data. When the Save as option is checked, the SST processing is triggered automatically.

Close Closes the dialog.

Menu Group

File The entries found in this menu allow to save the current processing parameters to disk and to open a saved parameter set from disk.

Help Displays this help page.