Data reader software
BEAM (VISAT) / SMOS ToolBox
BEAM is an open-source toolbox and development platform for viewing, analysing and processing of remote sensing raster data. BEAM can be used for the visualisation of individual L1 and L2 SMOS data products. For doing so, the SMOS ToolBox for BEAM (SMOS-Box) module should be added to BEAM. SMOS-Box consists of a set of BEAM-compliant software modules dedicated to the decoding, visualisation and basic analysis of operational SMOS data products. It enables the user to import SMOS L1c and L2 science data products into BEAM and use the existing BEAM functionality to decode, display, manipulate, analyse and export SMOS data products to alternative formats. ESA provides both BEAM and the SMOS-Box free of charge to the earth observation community.
SMOS NetCDF Conversion Tool
The SMOS NetCDF conversion tool is implemented as a Graph Processing Tool (GPT) operator and integrated into the BEAM framework in two different places. It can be either invoked from within VISAT Graphic User Interface or be used as a GPT-Operator for batch-processing using the command line. The SMOS NetCDF conversion tool converts SMOS L1C and L2 user products in Earth Explorer format to NetCDF-CF 4.
The size of the target NetCDF product covers the geometric bounding box of the original SMOS file. This can lead to large products, especially when the SMOS dataset crosses the anti-meridian. All pixels not covering a SMOS cell are filled with "fill" values. It is highly recommended to make use of the possibility to create regional subset products. This reduces the size of the resulting NetCDF file and increases the conversion speed significantly.
For further information on the usage of GPT see the SMOS Box section in the online help of BEAM.
A simple example to use the SMOS NetCDF conversion tool as a GPT-Operator for batch-processing is available here: GPT-ReadMe.pdf
Download: SMOS-Box for Windows 32-bit
Download: SMOS-Box for Windows 64-bit
Download: SMOS-Box for Linux
Download: SMOS-Box for Mac OS
The Binary XML is a library used to access the data of a hybrid binary-ASCII file using an XML Schema that defines the order and type of the data contained in the file. This approach makes it possible to alter the read/write format of a given hybrid file by simply changing the XML Schema.
ESOV can only be used to view and select SMOS orbits, it does not read any data products. It allows the user to select the required SMOS orbits, for example over a certain area or point, and for a certain period of time. The resulting selection can then be exported as a list which can be used to select the corresponding SMOS data files.
The SMOS Global Mapping Tool (GMT) is useful for plotting the SMOS data into a single global geographical map. The GMT is also able to visualise additional quantities derived from the SMOS data (i.e. first Stokes parameter) and to filter data based on the quality flag available in the SMOS products. The tool requires a Linux Operative System and the installation of the IDL application (licensed or virtual machine).
The HDFViewer is suitable for viewing any data in HDF format, such as the SMOS L2 data.
RWAPI can be used to extract information from the L1 or L2 data files in Matlab, as it reads all products related to the retrieval of soil moisture (e.g. L1c, L2 UDP files) as well as some auxiliary data used as input for the L2 processor. It runs under 64 bits Linux and requires Matlab version 2009b or higher. There is no Windows version available.
To obtain a user id and password, contact Ali Mahmoodi.
The SMOS Comparison Tool (SCoT) can be used to compare level 1 SMOS products of the same type generated with the same schema version for the Data Blocks (DBL). It has been designed to be used by the SMOS Calibration Expert Centre (CEC), the Expert Support Laboratories (ESL) and the Calibration and Validation teams to facilitate the comparison of level 1 products generated with different L1 processor configurations or algorithm baselines.
SMOSView provides a quick and easy look at SMOS data products. It is especially useful for getting an idea of the structure and contents of the data files. It is better suited to viewing data in detail than for global mapping. The software enables a user to decode and display data from SMOS products, display the contents as images or graphs and export the data to a number of alternative formats. It has a graphical user interface for data exploration and visualization.
Related (Key) Documentation
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