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The article describes how to receive weather imagery directly from satellites using an SDR. It's a fun project, and surely useful if you don't have Internet acc

by lwneal 7y ago

The article describes how to receive weather imagery directly from satellites using an SDR. It's a fun project, and surely useful if you don't have Internet access. However, if you do have Internet access, GOES-16 [1] provides a beautiful full-color live feed of the Earth which you can easily download with wget/curl. For example, paste the following: wget $(curl -s https://www.star.nesdis.noaa.gov/GOES/fulldisk.php?sat=G16 | grep -o -e 'https://cdn.star.nesdis.noaa.gov/GOES16/ABI/FD/GEOCOLOR/[0-9]*_GOES16-ABI-FD-GEOCOLOR-1808x1808.jpg' | head -1) -O earth.jpg && open earth.jpg It's fun to use as a live-updating wallpaper or background. [1] https://www.star.nesdis.noaa.gov/GOES/fulldisk.php?sat=G16 https://www.star.nesdis.noaa.gov/GOES/fulldisk.php?sat=G16

shrike 7y ago
Found https://github.com/cameronleger/goes16-background https://github.com/cameronleger/goes16-background, works well.
- app4soft 7y ago
  Good, but it is Python-way ;)
app4soft 7y ago
The only fix to your script is to use `display` command to open image (NOT `open` command).[0] wget $(curl -s https://www.star.nesdis.noaa.gov/GOES/fulldisk.php?sat=G16 | grep -o -e 'https://cdn.star.nesdis.noaa.gov/GOES16/ABI/FD/GEOCOLOR/[0-9]*_GOES16-ABI-FD-GEOCOLOR-1808x1808.jpg' | head -1) -O earth.jpg && display earth.jpg And here is my resulted preview.[1] UPD: Found that this CDN[2] also has static links to latest image, so script could be much more simplified by dropping `curl` and `grep`: wget -c https://cdn.star.nesdis.noaa.gov/GOES16/ABI/FD/GEOCOLOR/1808x1808.jpg -O earth.jpg && display earth.jpg [0] https://www.computerhope.com/issues/ch001720.htm https://www.computerhope.com/issues/ch001720.htm [1] https://i.imgur.com/gFaVvhz.jpg https://i.imgur.com/gFaVvhz.jpg [2] https://cdn.star.nesdis.noaa.gov/GOES16/ABI/FD/GEOCOLOR/ https://cdn.star.nesdis.noaa.gov/GOES16/ABI/FD/GEOCOLOR/
- dbtx 7y ago
  You can also avoid using the file: wget $(...) -O - | display -
MrGilbert 7y ago
GOES-16 covers America, if I see it correctly (currently on mobile, sorry). Does anyone happen to know if there is something comparable for the other side of the pond, e.g. Europe? I tried to search ESA, but haven‘t found anything (again, on mobile, so that might be the reason).
- fake-name 7y ago
  From the article: > The satellites’ orbits are configured such that one of the three passes within almost every point on the globe every three hours. So these cover Europe too.
  - MrGilbert 7y ago
    That's correct, thank you - but this only applies to the raw satellite link. The data itself is not available for download for the european region, afaik - that was what I was asking for. :)
  - thaumasiotes 7y ago
    But the view displayed on the website isn't changing. There's an "east" page displaying an amazing view of South America and a "west" page displaying mostly the Pacific Ocean. Images supposedly update every ten minutes, but those are the only two views you get.
- tunnuz 7y ago
  Some of the Landsat ones have a web service to download any covered area of earth. They pass over the same area about every 14 days though, so you won’t get a life feed of a location.
- BeniBoy 7y ago
  Trying to find that as well! The best I could find for now is the EUMETSAT feed[1], but it is updated every hour and not as good as GOES-16 at night. [1]: https://eumetview.eumetsat.int/static-images/MSG/RGB/NATURALCOLORENHNCD/FULLRESOLUTION/index.htm https://eumetview.eumetsat.int/static-images/MSG/RGB/NATURAL...
bschwindHN 7y ago
This works on MacOS without wget: curl $(curl -s https://www.star.nesdis.noaa.gov/GOES/fulldisk.php?sat=G16 | grep -o -e 'https://cdn.star.nesdis.noaa.gov/GOES16/ABI/FD/GEOCOLOR/[0-9]*_GOES16-ABI-FD-GEOCOLOR-1808x1808.jpg' | head -1) -o earth.jpg && open earth.jpg
- deleted 7y ago
  [deleted]
- surendhar 7y ago
  https://gist.github.com/surendharreddy/4264bc1f971680c355efa728b5e35a09 https://gist.github.com/surendharreddy/4264bc1f971680c355efa... Fixed it
- lordgrenville 7y ago
  Do you know any reason this wouldn't work with zsh? I'm getting zsh: no matches found: https://www.star.nesdis.noaa.gov/GOES/fulldisk.php?sat=G16
  - bschwindHN 7y ago
    Sorry, I just changed the original until it worked in MacOS in the default bash terminal. I kinda hate shell scripting to be honest.
  - wrboyce 7y ago
    Zsh is trying to expand the glob, either quote it or prepend the command with “noglob”.
    - lordgrenville 7y ago
      Ah, that was it. Much appreciated.
ahrjay 7y ago
I combine this and 3 other satellites on my twitter bot into daily videos if you're interested. https://twitter.com/earthin24 https://twitter.com/earthin24
- techbio 7y ago
  Cool! Got any multi-day/week/month videos?
3xblah 7y ago
If one just wants the latest 1808x1808 jpg, this seems simpler: wget https://cdn.star.nesdis.noaa.gov/GOES16/ABI/FD/GEOCOLOR/1808x1808.jpg source: https://cdn.star.nesdis.noaa.gov/GOES16/ABI/FD/GEOCOLOR/ https://cdn.star.nesdis.noaa.gov/GOES16/ABI/FD/GEOCOLOR/
- app4soft 7y ago
  Don't know why, but today this CDN page seems like lost its SSL-certificate and now Firefox prevent loading this page due to “Untrusted Connection”. Strange, but yesterday I had no such issue.
  - sorenjan 7y ago
    The certificate for cdn.star.nesdis.noaa.gov expired on 1/13/2020. Error code: SEC_ERROR_EXPIRED_CERTIFICATE
    - 3xblah 7y ago
      It looks they were using a free certificate from Lets Encypt. These only last for a few months. Lets Encrypt only does "Domain Validation" so the registrant of the domain name is the only thing they check. They do not issue certificates for IP addresses. https://140.90.107.147/GOES16/ABI/FD/GEOCOLOR/ https://140.90.107.147/GOES16/ABI/FD/GEOCOLOR/ This website works without a domain name. The traffic is still encrypted. How do we know this is really NOAA running the website at this IP address? We can check and see that the IP address belongs to AS 6629 and that AS belongs to NOAA. It is arguable this information provides better "authentication" than the Lets Encrypt certificate. It is certainly easier to fraudulently gain control over a domain name from a domain name registrar than it is to fraudulently gain control over an IP address block from a regional internet registry or via BGP hijacking.

by lwneal 7y ago

shrike 7y ago

Found https://github.com/cameronleger/goes16-background https://github.com/cameronleger/goes16-background, works well.

app4soft 7y ago
Good, but it is Python-way ;)

app4soft 7y ago

The only fix to your script is to use `display` command to open image (NOT `open` command).[0] wget $(curl -s https://www.star.nesdis.noaa.gov/GOES/fulldisk.php?sat=G16 | grep -o -e 'https://cdn.star.nesdis.noaa.gov/GOES16/ABI/FD/GEOCOLOR/[0-9]*_GOES16-ABI-FD-GEOCOLOR-1808x1808.jpg' | head -1) -O earth.jpg && display earth.jpg And here is my resulted preview.[1] UPD: Found that this CDN[2] also has static links to latest image, so script could be much more simplified by dropping `curl` and `grep`: wget -c https://cdn.star.nesdis.noaa.gov/GOES16/ABI/FD/GEOCOLOR/1808x1808.jpg -O earth.jpg && display earth.jpg [0] https://www.computerhope.com/issues/ch001720.htm https://www.computerhope.com/issues/ch001720.htm [1] https://i.imgur.com/gFaVvhz.jpg https://i.imgur.com/gFaVvhz.jpg [2] https://cdn.star.nesdis.noaa.gov/GOES16/ABI/FD/GEOCOLOR/ https://cdn.star.nesdis.noaa.gov/GOES16/ABI/FD/GEOCOLOR/

dbtx 7y ago
You can also avoid using the file: wget $(...) -O - | display -

MrGilbert 7y ago

GOES-16 covers America, if I see it correctly (currently on mobile, sorry). Does anyone happen to know if there is something comparable for the other side of the pond, e.g. Europe? I tried to search ESA, but haven‘t found anything (again, on mobile, so that might be the reason).

fake-name 7y ago
From the article: > The satellites’ orbits are configured such that one of the three passes within almost every point on the globe every three hours. So these cover Europe too.
- MrGilbert 7y ago
  That's correct, thank you - but this only applies to the raw satellite link. The data itself is not available for download for the european region, afaik - that was what I was asking for. :)
- thaumasiotes 7y ago
  But the view displayed on the website isn't changing. There's an "east" page displaying an amazing view of South America and a "west" page displaying mostly the Pacific Ocean. Images supposedly update every ten minutes, but those are the only two views you get.
tunnuz 7y ago
Some of the Landsat ones have a web service to download any covered area of earth. They pass over the same area about every 14 days though, so you won’t get a life feed of a location.
BeniBoy 7y ago
Trying to find that as well! The best I could find for now is the EUMETSAT feed[1], but it is updated every hour and not as good as GOES-16 at night. [1]: https://eumetview.eumetsat.int/static-images/MSG/RGB/NATURALCOLORENHNCD/FULLRESOLUTION/index.htm https://eumetview.eumetsat.int/static-images/MSG/RGB/NATURAL...

bschwindHN 7y ago

This works on MacOS without wget: curl $(curl -s https://www.star.nesdis.noaa.gov/GOES/fulldisk.php?sat=G16 | grep -o -e 'https://cdn.star.nesdis.noaa.gov/GOES16/ABI/FD/GEOCOLOR/[0-9]*_GOES16-ABI-FD-GEOCOLOR-1808x1808.jpg' | head -1) -o earth.jpg && open earth.jpg

deleted 7y ago
[deleted]
surendhar 7y ago
https://gist.github.com/surendharreddy/4264bc1f971680c355efa728b5e35a09 https://gist.github.com/surendharreddy/4264bc1f971680c355efa... Fixed it
lordgrenville 7y ago
Do you know any reason this wouldn't work with zsh? I'm getting zsh: no matches found: https://www.star.nesdis.noaa.gov/GOES/fulldisk.php?sat=G16
- bschwindHN 7y ago
  Sorry, I just changed the original until it worked in MacOS in the default bash terminal. I kinda hate shell scripting to be honest.
- wrboyce 7y ago
  Zsh is trying to expand the glob, either quote it or prepend the command with “noglob”.
  - lordgrenville 7y ago
    Ah, that was it. Much appreciated.

ahrjay 7y ago

I combine this and 3 other satellites on my twitter bot into daily videos if you're interested. https://twitter.com/earthin24 https://twitter.com/earthin24

techbio 7y ago
Cool! Got any multi-day/week/month videos?

3xblah 7y ago

If one just wants the latest 1808x1808 jpg, this seems simpler: wget https://cdn.star.nesdis.noaa.gov/GOES16/ABI/FD/GEOCOLOR/1808x1808.jpg source: https://cdn.star.nesdis.noaa.gov/GOES16/ABI/FD/GEOCOLOR/ https://cdn.star.nesdis.noaa.gov/GOES16/ABI/FD/GEOCOLOR/

app4soft 7y ago
Don't know why, but today this CDN page seems like lost its SSL-certificate and now Firefox prevent loading this page due to “Untrusted Connection”. Strange, but yesterday I had no such issue.
- sorenjan 7y ago
  The certificate for cdn.star.nesdis.noaa.gov expired on 1/13/2020. Error code: SEC_ERROR_EXPIRED_CERTIFICATE
  - 3xblah 7y ago
    It looks they were using a free certificate from Lets Encypt. These only last for a few months. Lets Encrypt only does "Domain Validation" so the registrant of the domain name is the only thing they check. They do not issue certificates for IP addresses. https://140.90.107.147/GOES16/ABI/FD/GEOCOLOR/ https://140.90.107.147/GOES16/ABI/FD/GEOCOLOR/ This website works without a domain name. The traffic is still encrypted. How do we know this is really NOAA running the website at this IP address? We can check and see that the IP address belongs to AS 6629 and that AS belongs to NOAA. It is arguable this information provides better "authentication" than the Lets Encrypt certificate. It is certainly easier to fraudulently gain control over a domain name from a domain name registrar than it is to fraudulently gain control over an IP address block from a regional internet registry or via BGP hijacking.