[HN Gopher] Visualize active fires around the world with Javascript
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Visualize active fires around the world with Javascript
Author : alagrede
Score : 51 points
Date : 2022-09-05 09:37 UTC (13 hours ago)
(HTM) web link (blog.znote.io)
(TXT) w3m dump (blog.znote.io)
| vie00001 wrote:
| OT: do you have an opinion on these horizontal scrollbars? But
| it's not really a scrollbar, more like an indicator how far you
| have scrolled in the article.
| samuelstros wrote:
| 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.
| ObiWanFrijoles wrote:
| 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
| samuelstros wrote:
| 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.
| shae wrote:
| I thought this was visualizing people getting fired, oops.
| TechBro8615 wrote:
| I thought it was visualizing fires caused by JavaScript!
| ricardobeat wrote:
| This is really interesting, but where is the interactive version?
| All I see is code and static images.
| GrumpyNl wrote:
| The code is there for you to make interactive versions.
| bufferoverflow wrote:
| Red on yellow with black borders is not a great choice of colors.
| Remember, your goal is to visualize.
| Gys wrote:
| 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 mm to 14.4 mm 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.
| defrost wrote:
| 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 )
| tpmx wrote:
| Thanks for mentioning Javascript in the title. That's not very
| common in posts about Javascript, here.
| ravenstine wrote:
| Very cool! Visualizations of data are very important for helping
| people understand what's significant.
|
| Years ago I worked on a (now defunct) site for a local NPR
| station in SoCal that displayed information on fires going on in
| California, and I incorporated geometry from satellites (MODIS
| and I think something called VIIRS) to implement a fire spread
| animation. The user could press a play button and see how the
| fire spread over time.
|
| In retrospect, that feature is kind of like watching car crashes
| on replay, but I was and am nevertheless proud to have worked on
| something like that.
|
| The site is no longer working, but I saved a video of it:
|
| https://youtu.be/HMzXNWiIC8k
|
| _EDIT: There were much more interesting spread animations than
| that but this video is all I have_
| egberts1 wrote:
| What is really interesting is why are there fires during winter
| months in Southern Hemisphere and why are these fires
| predominately more denser in colder hemisphere than the hottest
| part of its northern hemisphere counterpart?
| sharatvir wrote:
| Not an expert but it could be that those regions have more
| extreme wet/dry cycles, whereas the hottest parts of North
| America are deserts without much vegetation.
| [deleted]
| dbetteridge wrote:
| Well in Australia for examples that's when fire control
| measures are done, during the wetter and cooler months there
| are controlled burns to reduce the amount of flammable material
| on the ground.
|
| e.g. https://www.dfes.wa.gov.au/hazard-
| information/bushfire/plann...
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