1.0 What INPUT data is available?

Modified on Thu, 19 Jan 2023 at 03:06 PM

There are over 800 data sets on Google's Earth Engine.  Earth Blox can access all of them, but it is optimised to make it easy to access and analyse a collection of commonly used data sets. These are described in this article. 

What data is available in Earth Blox?


Selected Satellite Image Data

  • The vast majority of users of Earth Engine access Sentinel and Landsat data.
  • All of these data sets are georectified and calibrated so that they are analysis ready
  • Sentinel 2 and Landsat are optical data. See the article on the Optical Satellite Data Block to learn how to access and analyse these data.
  • For optical data, you will also need to address the cloud cover in the data. See the article on how to Create a Cloud-Free Image of Your Area of Interest.
  • Sentinel 1 and PALSAR are radar data.  See the article on the Radar Satellite Data Block to learn how to access and analyse these data.

Access any data from Earth Engine

  • The EE DATA LAYERS block allows access to any Earth Engine data set.
  • NB: Not all versions of Earth Blox will give you access to this block. 
  • It will automatically create a GeoTIFF that will appear in your ASSETS tab.
  • It is found in the Toolbox via  1.INPUT->EE DATA LAYERS, and looks like this:

  • You can use the link on the block to browse the Earth Engine catalogue or visit their page here
  • The key thing you need is the Earth Engine Asset ID. 
  • You can find the ID within the catalogue, as shown in the example below.


Forests and forest change

  • Earth Blox includes easy access to a number of other data products.
    • Hansen Global Forest Change v1.8. Results from time-series analysis of Landsat images in characterising global forest extent and change.
    • Other Forest Change Datasets
      • PALSAR forest change. This global forest/non-forest map is generated by classifying the SAR image in the global 25m resolution PALSAR-2/PALSAR SAR mosaic.  The years covered are 2007-10, and 2015 onwards.  
      • Aboveground Biomass.  A data layer showing the estimated aboveground forest biomass in Mg/ha.


  • Earth Blox includes easy access to three products related to fire. The three products are:

Terrain and elevation

  • Earth Blox includes easy access to three different global terrain maps. These are:
    • The SRTM 30m DEM. This Shuttle Radar Topography Mission V3 product (SRTM Plus) is provided by NASA JPL at a resolution of 1 arc-second (approximately 30m).
    • The GMTED 2010. The Global Multi-resolution Terrain Elevation Data 2010 (GMTED2010) dataset contains elevation data based on the SRTM DEM but augmented by several other sources, including national data sets and satellite stereo photogrammetry.
    • ALOS 30m DSM. ALOS World 3D 30m (AW3D30) is a global digital surface model (DSM) dataset with a horizontal resolution of approximately 30 meters (1 arcsec). It is calculated from optical stereo photogrammetry.

Weather and climate

  • Earth Blox includes two categories of products related to humans and human activity.
  • Human population, given as either:
    • Population count. The number of people within each coloured region). 
    • Population density. The number of persons per square kilometre consistent with national censuses and population registers.
  • Or, Night Lightsdata:
    • VIIRS Monthly V1. Monthly average radiance composite images using nighttime data from the Visible Infrared Imaging Radiometer Suite (VIIRS) Day/Night Band (DNB).
    • VIIRS Monthly Stray Light Corrected V1. The same as above, but it uses a procedure to correct for stray light.

Other Data Sets

  • There are several other data sets that you can explore using Earth Blox. We encourage you to try them out. 

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