NGA Pilot Charts, URLs for direct downloads - Page 2 - SailNet Community
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post #11 of 23 Old 11-19-2010
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UPDATE

These are now available:

Pub. 105 - Atlas of Pilot Charts South Atlantic Ocean
Pub. 108 - Atlas of Pilot Charts North Pacific Ocean

NGA - Maritime Safety Information
Maritime Safety Information
Look under Publications

Cheers!

Wharram Hitia 17 & Tiki 30
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post #12 of 23 Old 11-19-2010
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Been waiting for those-only problem if you want to print them out is origionals are larger than what most domestic printers take(A3?)
Also NGA pilots are pretty good bearing in mind that British Admiralty over here charge around about $40 for theirs!
Although some errors-being in UK I note some quite serious errors on UK version though as I recall I wrote to NGA who were quite happy to correct errors. More than can be said of British Admiralty publications who work on premise that they know best!
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post #13 of 23 Old 02-28-2011
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"Next Generation" pilot charts in grib format

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Originally Posted by DivaNZ620 View Post
There are also so called "Next Generation" Pilot charts...in fact Grib files compiled from actual weather for every month from 1990-1999.
That's very interesting. If you can contact me directly, I'll sort something out to make it available to others (FTP etc). I'd be very interested in a copy of this data too.

If you prefer, email me on s.mcauliffe @ gmail.com and we'll organise something.


Thanks,

Simon.
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post #14 of 23 Old 03-08-2011
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The NG/GRIB charts sound very interesting. Any updates on their availability for download?
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post #15 of 23 Old 03-10-2011
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Hi,

DivaNZ620 very kindly sent me the data he has.

The data contains global wind vectors for 1990-1999, non-aggregated. Unfortunately no other data like wave height, etc., but still useful.

The files are GRIB v2, so may not work with some software that only supports v1.

I have temporarily posted a bittorrent stream of the data at:
simonmcauliffe.com/downloads/Global_Wind_1990-1999_GRIB.torrent

This download is intentionally bandwidth limited, but if a bunch of people download it simultaneously, it should speed things up. So go for it!

I will look at putting the data up somewhere more convenient if there is demand for it or if bittorrent is too bit a problem.

I believe this data is originally sourced from NOAA.
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post #16 of 23 Old 03-10-2011
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Thank you smcauliffe and DivaNZ620 for sharing.
Any chance we can get 2000-2009 as well?
I could make this available for download via HTTP if there is a need.
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post #17 of 23 Old 03-10-2011
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In what format are the .grb files? I cannot open them in MacENC or GPSNavX.
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post #18 of 23 Old 03-10-2011
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.grb file format

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Originally Posted by Copprhead View Post
In what format are the .grb files? I cannot open them in MacENC or GPSNavX.
As I mentioned, these are GRIB v2 files. Some software isn't capable of viewing GRIB2, just check your documentation.

I have opened and tested the files though, and they are valid GRIB files.

For example, here's a screenshot from Jan 5 1990 around New Zealand showing valid data.

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post #19 of 23 Old 03-11-2011
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I'm trying to find a tool to convert v2 to the "legacy" GRIB format and/or use it with the JGRIB library. Then I could write some code that calculates averages of all this data to give wind info similar to that on pilot charts.

If anybody has experience working with these files, please let me know.
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post #20 of 23 Old 03-11-2011
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Quote:
Originally Posted by smcauliffe View Post
Hi,



I have temporarily posted a bittorrent stream of the data at:
simonmcauliffe.com/downloads/Global_Wind_1990-1999_GRIB.torrent
I cannot find a program to make use of these files. I downloaded FinalTorrent2011Setup.exe but it will not run.

Thanks

Jack

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