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Update EO guide #1563

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Update EO guide #1563

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rm "optical", related #1549
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18 changes: 13 additions & 5 deletions docs/support/tutorials/gis/eo_guide.md
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Expand Up @@ -13,6 +13,7 @@ This guide aims to help researchers to work with Earth Observation (EO) data usi
!!! default "Raster data format"

Most EO data is available in <a href="https://towardsdatascience.com/the-ultimate-beginners-guide-to-geospatial-raster-data-feb7673f6db0" aria-label="Towards data science guide to raster data">raster format</a>. The most common file formats are <a href="https://en.wikipedia.org/wiki/GeoTIFF" aria-label="GeoTiff data format description">GeoTiff</a> and <a href="http://giswiki.org/wiki/GeoJPEG2000" aria-label="GeoJPEG2000 data format description">GeoJPEG2000</a>.

## Why should I use CSC computing resources for EO?

For working with EO data in general, there are three main options:
Expand All @@ -38,7 +39,6 @@ Using CSC computing services requires basic Linux skills and ability to use some
What to consider when chosing data:

* Sensor
* Optical
* Multispectal
* Hyperspectral
* RADAR (Radio Detection and Ranging), SAR (Synthetic Aperture Radar)
Expand Down Expand Up @@ -66,12 +66,12 @@ What to consider when chosing data:

|Name|Max resolution, m|Revisit time, days|Years of operation|Open data|
|--------------|------------|-----|---------|---------|
|**Optical, multispectral**|
|**Multispectral**|
|**[ESA, Sentinel-2](https://sentinel.esa.int/web/sentinel/missions/sentinel-2)**|10-60|5|2015->|Yes|
|**[NASA, Landsat](https://landsat.gsfc.nasa.gov/)**|15-120|8|1972->|Yes|
|[ESA, Proba-V](https://earth.esa.int/eogateway/catalog/proba-v-1km-333m-and-100m-products)|100-1000|1-2|2013->|Yes|
|[Airbus, Spot](https://www.intelligence-airbusds.com/imagery/constellation/spot/)|1.5|-|1986->|No|
|[Planet, several satellites ](https://www.planet.com/products/planet-imagery/)|0.5-5|-|2009-> |No|
|[Planet, several satellites ](https://www.planet.com/products/planet-imagery/)|0.5-5|-|2009-> |No*|
|[DigitalGlobe, WorldView](http://worldview3.digitalglobe.com/)|0.3-30|-|1997->|No|
|[Airbus, Pleiades](https://pleiades.cnes.fr/en/PLEIADES/index.htm)|0.3-0.5|-|2012->|No|
||||||
Expand All @@ -89,6 +89,8 @@ What to consider when chosing data:
|[NASA, ICESat2](https://icesat-2.gsfc.nasa.gov/)|13|91|2019->|Yes|
|[NADA, GEDI](https://gedi.umd.edu/)|25|-|2018->|Yes|

\* See [Planets page for education and research](https://www.planet.com/markets/education-and-research/) for limited, non-commercial access to PlanetScope and RapidEye imagery.

!!! default "EO database"

Database of all EO missions and instrument information can be found in the [CEOS EO handbook database](http://database.eohandbook.com/database/instrumenttable.aspx)
Expand All @@ -114,7 +116,9 @@ Some Finnish EO datasets are available locally at CSC. A STAC catalog for all sp

**[SYKE/FMI, Finnish image mosaics](https://www.syke.fi/fi-FI/Tutkimus__kehittaminen/Tutkimus_ja_kehittamishankkeet/Hankkeet/Paikkatietoalusta_PTA)** : Sentinel-1, Sentinel-2 and Landsat mosaics, for several time periods per year. Some of them are available in Puhti, but not all. [FMI provides also a STAC catalog for these mosaics](https://pta.data.lit.fmi.fi/stac/root.json)

[**European Space Agency's SciHub**](https://scihub.copernicus.eu/dhus/#/home) provides worldwide main products for Sentinel-1, -2 and -3. It requires free registration. Big part of the data is in the "Long term archive" and cannot be downloaded directly, but needs to be requested first. Download is limited to 2 concurrent processes per user. Please note that between end of January and July 2023 this system is being updated to become the [Copernicus Space Ecosystem](https://medium.com/sentinel-hub/new-copernicus-data-access-service-to-support-the-ecosystem-for-earth-observation-412f829355a3).
[**European Space Agency's SciHub**](https://scihub.copernicus.eu/dhus/#/home) provides worldwide main products for Sentinel-1, -2 and -3. It requires free registration. Big part of the data is in the "Long term archive" and cannot be downloaded directly, but needs to be requested first. Download is limited to 2 concurrent processes per user. Please note that between end of January and July 2023 this system is being updated to become the [Copernicus Space Ecosystem](https://medium.com/sentinel-hub/new-copernicus-data-access-service-to-support-the-ecosystem-for-earth-observation-412f829355a3). SciHub will continue its full operations until the end of June 2023.

[**Copernicus Data Space Ecosystem**](https://dataspace.copernicus.eu/) provides access to all Sentinel data with new features for visualisation and data processing. Please stay tuned to the news for latest information on the services available and the [Copernicus Data Space Ecosystem roadmap](https://documentation.dataspace.copernicus.eu/#/Roadmap) for the full release of all functionalities.

[**FinHub**](https://finhub.nsdc.fmi.fi/#/home) is the Finnish national mirror of SciHub; other national mirrors also exist. It covers Finland and the Baltics and offers Sentinel-2 L1C (but not L2A) and Sentinel 1 SLC, GRD and OCN products and requires own registration. Finhub does not have concurrent download limitations nor a "Long term archive".

Expand Down Expand Up @@ -200,7 +204,7 @@ Below is a list of alternative EO processing services that might be useful, when

**[Microsoft planetary computer](https://planetarycomputer.microsoft.com)** offers JupyterHub together with Dask Gateway, both CPUs and GPUs are available. It is currently available in preview.

**[Data and Information Access Services (DIAS)](https://www.copernicus.eu/en/access-data/dias)** offer cloud based Virtual Machines (VMs), dedicated baremetal servers, containers, operating system and software images. These services are specialized in EO and have user support available. All of them are commercial services.
**[Data and Information Access Services (DIAS)](https://www.copernicus.eu/en/access-data/dias)** offer cloud based Virtual Machines (VMs), dedicated baremetal servers, containers, operating system and software images. These services are specialized in EO and have user support available. All of them are commercial services. The new [Copernicus Data Space Ecosystem](https://dataspace.copernicus.eu/) will combine some of the DIASes into one, including then also free trials of the service. See the [Copernicus Data Space Ecosystem roadmap](https://documentation.dataspace.copernicus.eu/#/Roadmap) for the full release of all functionalities.

[**Sentinelhub**](https://www.sentinel-hub.com/explore/) is a commercial service that offers several different APIs.

Expand All @@ -221,6 +225,10 @@ You can find all the ways that you can get help from CSC specialists via [CSC co

This guide was developed in cooperation with the [Finnish Environment Institute, SYKE](https://www.syke.fi/), as part of the [Geoportti project](https://www.geoportti.fi/).

## Contributions welcome

If you find any mistakes or outdated links, have improvement suggestions or want to add more information about a certain topic, please add them to our [Github issue for improving the EO guide](https://github.com/CSCfi/csc-user-guide/issues/1549), send a pull request to our [CSC documentation on github](https://github.com/CSCfi/csc-user-guide/) or contact us via any of the ways mentioned in [CSC contact page](../../contact.md). Thank you!

## Resources and further reading

If you are interested in the fundamentals of EO, take a look at these excellent resources:
Expand Down