README.md

Cloud Native Geospatial for Earth Observation Workshop

This repository contains workshop materials to that introduce cloud native methods of working with Earth observation data products.

There are two activities, each with an annotated notebook:

• Activity 1: Find, Load, Visualise
• Activity 2: Cloud Native Land Productivity for SDG 15

Activity 1 demonstrates how to query the Digital Earth Australia STAC catalog and produce a visually appealing image for a location in Australia.

Activity 2 demonstrates how to measure land productivity as a subindicator of Sustainable Development Goal indicator 15.3.1: Proportion of land that is degraded over total land area. For more information please see the Satellite Data Requirements for SDGIndicator 15.3.1 document. The use case covers an area of agriculture and forest on the Ba River in Fiji.

Quickstart

Tutorial PDF

Along with a completed notebook, we provide a step-by-step PDF document. This was used to run the tutorial at the 2024 FOSS4G in Belem.

Start the Codespace

The easiest way to get started running through this workshop is to launch a GitHub Codespace, which includes a VS Code web environment that includes the ability to run and edit Jupyter Notebooks.

1. Click the green Code button
2. Click the Codespaces tab
3. Click Create codespace on main

Sign into NASA's Earthdata portal and create an access token

Sign up for EarthData: https://urs.earthdata.nasa.gov/ if you don't have an account already.

The notebook uses the earthaccess library for authenticating with NASA's Earthdata system.

earthaccess.login() prompts you for your Earthdata username and password. Once authenticated, you will have access to credentials for both HTTP and S3 access to Earthdata collections.

Run the demonstration notebooks

Open the Find_Load_Visualise.ipynb notebook and work through the cells.

Open the Cloud_Native_Land_Productivity_For_SDG15.ipynb notebook and work through the cells.

Authorship and sponsorship

These notebooks were written by Alex Leith and Caitlin Adams, with financial support from the Committee on Earth Observation Satellites and advice from members of the GEO Land Degradation Neutrality Flagship. The notebooks were reviewed by Lavender Liu and Matthew Ellis.

Further resources

Digital Earth Australia's Sentinel-2 prodcut

• Product overview
• STAC catalog URL: https://explorer.dea.ga.gov.au/stac

NASA's Harmonized Landsat Sentinel-2 product

• Product overvivew
• User guide
• STAC catalog URL: https://cmr.earthdata.nasa.gov/cloudstac/LPCLOUD/

SDG indicator 15.3.1

There are multiple valuable resources related to measurment of land degredation through SDG indicator 15.3.1:

• Good practice guidance. SDG indicator 15.3.1, Proportion of land that is degraded over total land area. Version 2.0.
• Satellite Data Requirements for SDGIndicator 15.3.1
• TRENDS.EARTH: tracking land change