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Space Weather (global TEC) displayed with geoshow & mapshow

version 1.0.0 (2.03 MB) by Meg Noah
This project shows how to plot and create movies of global gridded space weather data using matlab.


Updated 07 Jan 2020

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The primary purpose of this project is to show how to use gridded global space weather data that NASA and NOAA share here ( assembled into cdf files. The scripts use only matlab's cdf read routines, but NASA has developed a set as well that they recommend:

Total Electron Content (TEC) in Ionosphere. The TEC is defined as the total number of electrons integrated along the path from the receiver to each GPS. Total Electron Count is one of several indicators of ionospheric variability area derived by the modified GPS signal through free electrons. Since 1998, International GNSS service (IGS) associate analysis centers have provided products containing ionosphere vertical total electron content (TEC) maps and daily GNSS satellite.

Four script/mlx files are included along with the file

* displayMapAsImage.m - displays the global data using imagesc
* displayMosaicSequence.m - displays the images for every 2 hours as a mosaic
* displayUsingGeoshow.m - displays the global data using geoshow with coastal lines
* displayUsingMapshow.m - displays the global data using mapshow with coastal lines and contour lines
* makeMovieUsingGeoshow.m - generates this movie:

Cite As

Meg Noah (2021). Space Weather (global TEC) displayed with geoshow & mapshow (, MATLAB Central File Exchange. Retrieved .

Comments and Ratings (3)

Umesh Verma

DearMam i would like to share my experince in mobnitoring TEC slant data.These are vague and least reliable .Mostly affected with GPS DCB and other ambuguities.These are oftenly associated with solar wind or storm period .With the release of solar wind in solar cycle of Mc class the effect has been crucial on VTEC determination.

Meg Noah

I think that we have no choice but to start using more and more renewable energy sources, and the solar panel technology has come a long way since the first cells were invented making it a long-term cost-wise investment. Moreover, for space exploration, there are limited ways to produce electricity that is usable and solar panels are great. They won't do everything for rovers because of night conditions on remote bodies, so we also need plutonium-238, itself safe but produced through hazardous industrial means. In other planets, they will also eventually look into 'geothermal' if the core hasn't cooled too much and wind if there is sufficient atmosphere, as well as chemical changes that can be exploited for energy output. For interplanetary travel, I suppose they will be using tethers and solar wind properties as well as plutonium-238, gravity maneuvers, and solar panels. I don't see much connection of solar panel data to the TEC data other than the TEC active region is driven by the Sun. Am I missing something?

Viktor Cheberachko

This is a very popular topic right now because the environmental situation is in danger. And I want to be free from industrial electricity. How beneficial is it to install solar panels? I read a lot of useful information here What do you think about it?

MATLAB Release Compatibility
Created with R2019b
Compatible with any release
Platform Compatibility
Windows macOS Linux

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