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> Do the various national weather agencies share data with each other? Yes, via a UN body called World Meteorological Organization. They have 193 members, only
by input_sh 4y ago
> Do the various national weather agencies share data with each other?
Yes, via a UN body called World Meteorological Organization. They have 193 members, only missing a dozen or so island nations.
- solardev 4y agoDoes that mean all weather apps have the same source data?
- cube00 4y agoI can't imagine even the likes of Apple with their WeatherKit want to have to deal with installing and maintaining their own physical meteorological sensors in every country.
- solardev 4y agoI don't know about installation of physical devices, but it'd be cool to see Big Tech teaming up with the weather folks for developing mesh protocols, analytical techniques, data optimizations, etc. Or maybe that's all done already? I dunno. Kinda like how IBM owns the Weather Channel.
- chrismeller 4y agoVery much no. A lot of them are, somewhat sadly but predictably, targeted at larger markets and therefore pull data from NOAA for the US, the UK Met, and the German weather service (DWD), etc. but then fill in the gaps with something like NOAA that will provide predictions for everywhere in the world. You also quickly get into different models that are used by different services, usually because they work better in the specific environment they're targeting. For instance, Estonia and Finland, possibly with some others, collaborate on their own weather model that works pretty well in the Baltics. There are also highly-regarded models like the ones provided by ECMWF that are only available for a fee, so a lot of apps won't include them, instead preferring to simply use NOAA because it's free for everywhere.
- solardev 4y agoAm I to understand that they share sensor data, but then apply their own models for forecasting?
- chrismeller 4y agoAlso doesn't necessarily mean that they incorporate anyone else's sensor data into their own models. Estonia, for instance, is so small I suspect they only feed their data, they don't pull anyone else's.