I wanted to better understand what is the difference between different spatial resolutions in satellite images. What can you really see in a 10 meter resolution image? What is the actual difference between 20 meter and 100 meter resolution? To get an answer for these questions I carried out a simple test.

I used Sentinel-2A true color images (TCI) as baseline. These Sentinel-2 images have 10 meter resolution. Of course there are commercial satellites with better than 1 meter resolution but I wanted to concentrate on satellite data that is openly available for everyone. …


In this document, I will describe my workflow for processing free and open Sentinel-2 satellite data into beautiful high-resolution images using free tools.

Tools/Software Used

The tools/software I use here are:

All these great tools are free to use. Please consult the software home pages, your OS package manager, Google, etc. for more information on installing the software. (I carry out the processing in OS X so I am not 100%…


What was the sunniest place on Earth in 2016? I used some satellite data to figure it out and here are the results.

I defined the sunniest place as the place where you can see the sun for the longest time measured over the whole year (or the largest average sunny hours / day). To see the sun, I required two things:

  1. The sun must be above horizon
  2. The sun must not be behind clouds

I used MODIS satellite data from NASA’s Terra and Aqua satellites to get information about the cloud cover. MODIS data was very nice for this…

Antti Lipponen

Researcher at Finnish Meteorological Institute. #Satellite images, #dataviz and #science related things. Remote sensing, climate etc.

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