It wasn't at all clear where the data comes from, but after a little digging it looks like volunteers are driving around with homemade devices collecting data.
It’s quite a wonderful set of globally-distributed volunteers brought together by varying passions - from hardware hacking to citizen science.
Whether from fixed or mobile sensors, whether from radiation or air quality sensors, all data is CC0-licensed at birth and is freely available for download.
Such datasets are relatively common across the globe and none that I'm aware of appear to be included.
Their devices appear to be all total count gieger types which don't seperate out energy bands or have much accuracy - ie. "good enough" for coarse results, not that great for identifying radon Vs ??? as a source.
Interesting that Three Mile Island is not any higher than background levels. I would have expected even a minor bump. I suppose 45 years is a long time.
Not just these icons -- the entire site is both jam-packed with information and nearly unreadable.
I think this might be an example of when an engineer or a developer design the user-facing portions of a system. A deeply technical perspective, at a complete loss in how to relate to an average outsider.
I don’t see the information overload issue in this Safecast map. If anything, it lacks info (a good air quality map should at least come with wind indicators, like earth.nullschool).
However, it seems to have limited coverage, which makes it useless for many.
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[ 4.1 ms ] story [ 32.0 ms ] threadhttps://bgeigiezen.safecast.jp/store-2/
Looks like they might have had apps too, but they have been pulled from the App Store and Play Store?
It’s quite a wonderful set of globally-distributed volunteers brought together by varying passions - from hardware hacking to citizen science.
Whether from fixed or mobile sensors, whether from radiation or air quality sensors, all data is CC0-licensed at birth and is freely available for download.
It's interesting they don't include, as a baseline reference, the near complete Australian coverage by 256 channel radiometric data (available for free download): https://www.ga.gov.au/scientific-topics/disciplines/geophysi...
Such datasets are relatively common across the globe and none that I'm aware of appear to be included.
Their devices appear to be all total count gieger types which don't seperate out energy bands or have much accuracy - ie. "good enough" for coarse results, not that great for identifying radon Vs ??? as a source.
Or could anyone in control of the network inject fake sensor data?
https://ibb.co/TLDxBZF
I think this might be an example of when an engineer or a developer design the user-facing portions of a system. A deeply technical perspective, at a complete loss in how to relate to an average outsider.
It really looks like an exercise in obfuscation.
However, it seems to have limited coverage, which makes it useless for many.