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Visualize active fires around the world with Javascript

blog.znote.io

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Re: Visualize active fires around the world with Javascript

#2

Post by Gys »

Data from Moderate Resolution Imaging Spectroradiometer (MODIS)

Wikipedia: a satellite-based sensor used for earth and climate measurements. They capture data in 36 spectral bands ranging in wavelength from 0.4 μm to 14.4 μm and at varying spatial resolutions (2 bands at 250 m, 5 bands at 500 m and 29 bands at 1 km). Together the instruments image the entire Earth every 1 to 2 days.

I looked this up because I want to know fires too close by. Updates every 1 to 2 days is not very useful for that.

In Portugal there is https://fogos.pt/ which is updated very frequently.

Re: Visualize active fires around the world with Javascript

#3

Post by defrost »

Gys wrote: post #2

Data from Moderate Resolution Imaging Spectroradiometer (MODIS) Wikipedia: a satellite-based sensor used for earth and climate measurements. They capture data in 36 spectral bands ranging in wavelength from 0.4 μm to 14.4 μm and at varying spatial resolutions (2 bands at 250 m, 5 bands at 500 m and 29 bands at 1 km). Together the instruments image the entire Earth every 1 to 2 days. I looked this up because I want to…

You can get (raw) data as the satellites (on precessing near earth polar otbits) pass over .. otherwise you wait until they next pass over, whether in the US or Portugal.

Processed data for the past 24 hours is available, it may be 18 hours "old" though.

See: (for regular processed products)

* https://firms.modaps.eosdis.nasa.gov/active_fire/

* https://firms.modaps.eosdis.nasa.gov/api/kml_fire_footprints...

And here for 'Ultra Real Time' over the US | Canada

* https://wiki.earthdata.nasa.gov/display/FIRMS/2022/07/14/

elsewhere you'd have to contact your local ground station and geolocate + bandprocess the raw data as it beams in if you want Ultra Real Time.

( Hexagon sell a product that can do this if you're not up to writing your own )

Re: Visualize active fires around the world with Javascript

#5

Post by ObiWanFrijoles »

samuelstros wrote: post #4

Besides the article, znote is interesting. I was wondering why no JS notebook, similar to Jupyter notebooks exists. That said, to build a JS data science ecosystem, znote would need to be open source. I assume that would hinder your monetization efforts.

Observable [0] seems to be inspired by Jupyter. I haven't had a chance to use it though. It looks like some of its core features are open source [1]

[0] https://observablehq.com/

[1] https://github.com/observablehq

Re: Visualize active fires around the world with Javascript

#6

Post by samuelstros »

ObiWanFrijoles wrote: post #5
samuelstros wrote: post #4

Besides the article, znote is interesting. I was wondering why no JS notebook, similar to Jupyter notebooks exists. That said, to build a JS data science ecosystem, znote would need to be open source. I assume that would hinder your monetization efforts.

Observable [0] seems to be inspired by Jupyter. I haven't had a chance to use it though. It looks like some of its core features are open source [1] [0] https://observablehq.com/ [1] https://github.com/observablehq

I tried observable but a) I'd like to have the source files in git for version control + CI/CD. b) They use a special flavour of JS which I have no interest in learning.

The best solution I found was VSCode TS notebook https://github.com/DonJayamanne/typescript-notebook. However, ESM and notebook scoped package installations are not supported, along with some bugs.

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