ESA SNAP Toolbox surpasses 300000 downloads

The ESA SNAP Toolbox surpassed 300000 downloads on December 19th 2018. SNAP stands for “SeNtinels Application Platform” and it is the fully free and open-source toolbox platform that supports processing of raster imagery from ESA, Copernicus Sentinel 1/2/3, and many 3rd party satellite missions. SNAP is available at:

and the SNAP discussion forums can be found at:

Splash-screen of SNAP6.0

Splash-screen of SNAP6.0

SNAP cumulative downloads since the beginning. Blue = Mac OS, Green = Linux, Red = Windows64 and Yellow = Windows32

SNAP cumulative downloads since the beginning. Blue = Mac OS, Green = Linux, Red = Windows64 and Yellow = Windows32

STEP Forum live again, but some DNS changes may take awhile

Dear STEP Users,

The Forum is live again. It can be accessed at the following address:

Please note that some DNS changes operated today may take awhile to be applied for everyone. The read-only copy of the forum will be accessible in the following days, until the changes are applied. If the forum is NOT read-only, it means it is pointing to the latest version of the forum, and the DNS changes were applied on your computer.
We are still working on some areas of the forum, so you may notice small issues. You can help us by describing the encountered issue in the meta category of the forum (

We are continuously working on improving our platform, to offer the best experience.

The STEP Team.

STEP Forum read-only on 22nd of May, 2017, between 5 AM UTC and 15 PM UTC

Dear STEP Users,

Please be informed that the STEP forum will be read-only tomorrow, 22nd of May, 2017, between 5 AM UTC and 15 PM UTC. This means the forum will be able to display posts, but not to save new posts or other actions. This operation is part of periodic administration operations, and has the scope of assuring and improving the accessibility and responsiveness of the STEP platform (including the public website and the forum).

We are working as fast as possible to reopen the forum. A new post will inform when the operation will complete.

We are sorry for any possible inconvenience and we are continuously working to improve our services.
Thank you for your understanding.

The STEP Team.

LE: The forum is live again, but some DNS changes will not take effect right away and for everybody in the same time. Please note that, if the forum that you see is read-only, you are seeing a backup of the forum. It may help to clear the browser cache. Otherwise, try again in a few hours.

New release of Sen2Cor 2.5.5 is available

Dear Users,

we are pleased to provide Sen2Cor Release 2.5.5 under:
Stand-alone installers for the three operating systems Linux, Windows and macOS are now available. All three versions require a 64-bit platform.

Note, that a product format change has been applied to the data products:

  • The naming logic of the files embedded in the L2A product package has been harmonised with that of the L1C product
  • The Metadata files (Product, Datastrip, and Tile levels) have been harmonised in structure and contents with that of the L1C

Regarding the algorithm, the main improvements of the Sen2Cor 2.5.5 processor compared to previous version 2.4.0 are:

  • Improvement of cloud screening and scene classification
  • Visibility iteration extended from 80 to 120 km
  • Exclusion of cloud shadow pixels for Water Vapour retrieval
  • Improved aerosol optical thickness retrieval

The Sen2Cor SNAP adapter (plugin version 6.0.1) is working with Sen2Cor 2.4.0. The adapter will be updated soon and a new plugin update version will be published.

For any further details, including installation step, and an overview on the evolutionary upgrades applied to Sen2Cor 2.5.5, please read the release notes which are provided under:

With best regards,

Sen2Cor Development Team

OGC Announces Earth Observation Exploitation Platform Hackathon 2018

Dear users,

The Open Geospatial Consortium (OGC®), together with the European Space Agency (ESA), and Natural Resources Canada (NRCan) is organizing the Earth Observation (EO) Cloud Processing Hackathon. This Hackathon provides a business opportunity for stakeholders to experiment with the latest results from Testbed-13 in the context of ESA’s Earth Observation (EO) Exploitation Platforms.

The Hackathon will run from March to May 2018, with a Clarification Webinar for prospective participants on February 19. A Kickoff Workshop at OGC’s Technical and Planning Committee Meeting in Orléans, France (attendable remotely) will mark the beginning of the Hackathon.

Organizers will provide the Sentinel Application Platform (SNAP) Software Toolbox together with a pre-defined workflow packaged in a Docker container. Thus, Hackathon participants can use the Docker container “as is” and do not need to modify the container or the application. The SNAP workflow in that Docker container requires two types of data: Digital Elevation Model (DEM) data and Sentinel-1 data. Both will be made available to the participants as cloud resources.

During the Demonstration Meeting, participants will have the opportunity to visit the ESA Operations Centre in Darmstadt (Germany), including the Main Control Room.

The master schedule of the event, together with other details and clarifications, can be found on the official page of the event:

The press release of the event can be found here:

SNAP 6.0 released

The SNAP development team is pleased to announce a new SNAP release.

The different installers for the supported platforms can be downloaded.
Besides bug fixes and improvements, several new features are waiting for you. For example


  • Improvements to the GPT memory configuration
  • Progress is now provided on the command line
  • Problem of keyboard stops working with SNAP 5.0 has been solved
  • Merge operator supports specifying exclusions
  • Plotting of metadata values is supported
  • Module updates are now correctly considered by snappy
  • Allow the export of pins to Google Earth KMZ format

A comprehensive list of all issues resolved can be found in our issue tracking system

Sentinel-1 Toolbox

  • Integrate into the Product Library integration with SciHub
  • Add option to terrain correction to use a standard grid across images
  • Support for ALOS on-demand products from ESA IPF
  • Topo Phase Removal handles multiple slave images correctly
  • DEM is oversampled in Terrain Flattening
  • Error in Interferogram with TSX/TDX CoSSC data
  • RSTB output Polarisation Orientation Angle

A comprehensive list of all issues resolved can be found in our issue tracking system

Sentinel-2 Toolbox

  • Read detector footprint masks per detector
  • Support for ZIP inputs
  • Sentinel-2B product support
  • New Segmentation processor
  • New Multi-size mosaic processor
  • New S2 Resampler processor
  • Enhancement of the Sen2Cor configuration

A comprehensive list of all issues resolved can be found in our issue tracking system

Sentinel-3 Toolbox

  • Integrated C2RCC processor
  • Support rayleigh correction for S2-MSI
  • Support Rad2Refl for SLSTR
  • Support Landsat data from dataset ‘Collection 1’
  • FU Classification extended for S2-MSI, MODIS500 and CZCS

A comprehensive list of all issues resolved can be found in our issue tracking system

For more information about changes made for this release please have a look at the release notes of the different projects: SNAP, S1TBX, S2TBX, S3TBX, SMOS Box, PROBA-V Toolbox

Enjoy the new release
The SNAP Team

New release of SNAPHU 1.4.2 is available

SNAPHU is releasing the new version 1.4.2 available to be downloaded from here. The news of this version is the provide of the installer file.
Two-dimensional phase unwrapping is the process of recovering unambiguous phase data from a 2-D array of phase values known only modulo 2pi rad. SNAPHU is an implementation of the Statistical-cost, Network-flow Algorithm for Phase Unwrapping proposed by Chen and Zebker.


3rd EO Open Science Conference, 25–28 September 2017

Dear users,

The European Space Agency (ESA) is organizing the 3d consultation meeting of EO Open Science in ESRIN (Frascati, Italy) on 25–28 September 2017 to explore new challenges and opportunities for EO research created by the rapid advances in Information and Communications Technologies (ICT). This includes open tools and software, data-intensive science, virtual research environment, citizen science and crowdsourcing, advanced visualization, e-learning and education of the new generation of EO and Data scientists. The conference is presenting activities in EO Open Science and Innovation and develop a Roadmap for future ESA exploitation activities under the EO Science for society programme. Please find more details on the official website You can follow the live stream here.

7th Advanced Training Course on Land Remote Sensing, 4-9 September 2017

As part of the Scientific Exploitation of Operational Missions (SEOM) programme element, the European Space Agency (ESA) organised an Advanced Land Training Course devoted to train the next generation of Earth Observation (EO) scientists to exploit data from ESA and operational EO missions (e.g. the Sentinels) for science and applications development.

A total of 78 post graduate-level, PhD students, post doctoral research scientists and users from Europe, Canada and from other continents attended the 6-day course, which was held at Szent István University (SZIU), Hungary, from 4 to 9 September 2017.

The Advanced Land Training Course aimed at:
Training the next generation of European and Canadian Principal Investigators (PIs)
Explaining theoretical principles, processing algorithms, data products and their use in applications
Introducing tools and methods for the exploitation of EO sateliite data, in particular the Sentinels
Stimulating and supporting the exploitation of ESA EO and Third Party Mission data for land remote sensing science and applications.

Please find more details on the official website

New release of Sen2Three 1.1.0 is available

Sen2Three is releasing the new version 1.1.0 available to be downloaded from here.

Changes of release 1.1: Compatibility with PSD version 14.2 and Sentinel 2B products

  • Sen2Three supports now the “safe compact” format which was introduced with PSD version 14.2 in parallel to the safe standard format as it was used up to PSD version 13.1. Sen2Three will detect the format automatically when reading a product. No configuration changes are necessary. The Level 3 output will always be generated in the PSD version 14.2 compatible safe compact format.
  • If Sen2Three is detecting a version 13.1 formatted Level 2a input product, it will convert it first into a version 14.2 compatible safe compact Level 3 product and processes it afterwards. This allows a mixed input of Version 13.1 and 14.2 Level 2a products in the same directory at the same time.
  • Sen2Three now also supports the processing of Sentinel 2B Level 2a input products and is compatible to Sen2Cor Version 2.4.0.

For any questions about the installation or usage of Sen2Three, please follow the STEP forum areas dedicated to Sen2Three: