Collect data from satellites for scientific research in weather forecasting
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Our Autumn campaign is still ongoing! The monthly prize winners are announced here.
Prize winners from the first campaign announced here.
Join our campaign! If you have participated in the first CAMALIOT campaign, please go to the Play Store to update the CAMALIOT app to start logging data from satellites in the background and participate in the new campaign. If you are new to CAMALIOT, download the app and register to participate in the new campaign. Check out the prizes to be won here

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UPDATE! Access to ESA’s GSSC Preview Programme is now open for application!

The Global Navigation Satellite System (GNSS) is a set of satellites that orbit the Earth.
These GNSS satellites provide valuable information to many different location-based applications from the satnav in your car to flying a plane. But we can also use the data for scientific research.
We developed the CAMALIOT app to gather data from these satellites, taking advantage of new developments in mobile technology to collect and access the raw GNSS data from Android phones.
All the data are gathered by individuals like you. You don't have to be a scientist, you just need to have access to an Andriod mobile phone with your GPS turned on.
In return, you are helping to build better weather forecasting models, and there is a chance to win prizes at the end of the campaign.
As the GNSS satellite signals are received in Earth, they are modified by the amount of water vapour in the atmosphere.
We can use these modified signals in combination with machine learning algorithms to improve weather forecasting, in particular, of rainfall.
By using crowd-sourced GNSS data from many mobile phones around the world, we hope to create better inputs to weather prediction models so that local rainfall events are forecast more accurately.
We will also use the GNSS data to improve predictions of space weather, e.g., the types of events that can disturb our communication systems due to solar flares.
Get involved by collecting GNSS data through the CAMALIOT app and join our current campaign. See below for more information about the prizes you can win!


1. Click on START LOGGING to collect the data from satellites. If possible, place the phone somewhere with a clear view of the sky.
2. Click on STOP LOGGING to stop the session.
3. Upload the session to the server and then repeat to log and upload more data.
4. Check the data uploaded and leaderboard

The CAMALIOT Autumn Campaign Prizes

  • >> A new autumn campaign began 1st August 2022.
  • >> Prize draw at the end of each month, where one winner will be randomly drawn to win some CAMALIOT, IIASA or other branded merchandise (e.g., a baseball cap)

    • >> The more measurements uploaded, the higher chances of winning.
    • >> The monthly leaderboard will be reset each month.
    • >> The campaign will run until at least 30th November 2022 but updates will be provided nearer the time
    • >> See Official Rules
  • >> Apply for access to ESA’s GSSC Now Preview Program. The First 50 people will get access on a first come first served basis.