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Old 12-10-2017, 07:46   #1
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Climatology Plugin Data Sources

Hey all,

Sorry if this info is already somewhere in the forum, I couldn't find it after using the search bar for 20 minutes and also after going through the plugin page on the OpenCPN web page. I'm interested in knowing the data sources being used in the Climatology plug-in, specifically:

- Where is the data being pulled from to form the climatology, what climate services are being used?
- Is the data being pulled at a regular frequency, i.e daily, weekly, etc., or it requires a manual process

Anyone can help me answer these questions?

Thanks,
Waqas.
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Old 12-10-2017, 08:35   #2
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Re: Climatology Plugin Data Sources

It is not found in the forum. Try the Manual for the Plugin, it is there.

By the way, would you mind explaining your interest?
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Old 16-10-2017, 02:38   #3
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Re: Climatology Plugin Data Sources

Thanks, I'm looking at the plug-in manual page, there is lot of info there, but unfortunately no clear description of data sources:

https://opencpn.org/wiki/dokuwiki/do...er:climatology

I'm working as part of a research group at Chalmers Univ., Sweden, and we are evaluating sailing weather+climate route optimisation services, and the OpenCPN climatology plugin tool looks really interesting! Wondering what kind of various / fixed data input sources this plugin pulls in data from to function?
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Old 16-10-2017, 10:35   #4
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Re: Climatology Plugin Data Sources

Warning about use of Data

Quote:
Weather_routing is only as good as the data provided by the Grib plugin and the Climatology plugin.
  1. Climatology plugin: Depends on a separate set of files that must be downloaded, extracted and placed in the proper directory. Climatology data is generally averaged since the 1980's depending on data type and sources available (for example, Wind data is averaged 6 hr data since 1987). The entire source data set is over 180 gb, however after averaging and compression it becomes about 7mb. There are various macro factors which affect weather over a given season which should be considered, including El Nino, Gulf stream, etc. Climatology has averaged these effects.
  2. These planning tools may be helpful, but should be taken with a healthy “grain of salt” as any good sailor (who looks out to the horizon) should know. -Rick Gleason
Sean D'Epagnier is the programmer and I worked on this. I basically downloaded 130gb of data from a number of sources (a lot of it NOAA databases & other sources that were public opensource) for each parameter, spanning about 32 years of data. Sean was the mastermind, and would give me linux programs to compress the data. He manage to get the 130gb down to about 7mb which is used in Sean's plugin "Climatology".

If you would like, I might be able to find a more definitive list of our sources, but because this particular data landscape has changed over the years since doing it, some of the sources may have morphed, merged, changed or dropped.

The data is "static" because at the time this was done "real time" data was really quite unheard of.

Look at this thread

http://www.cruisersforum.com/forums/f134/climatology-database-search-104418-2.html#post1319396

and back at the beginning of this thread

Climatology

For some of the things we were considering.
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Old 16-10-2017, 10:40   #5
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Re: Climatology Plugin Data Sources

This post may be some help.
Climatology - Database Search

Also the bottom of this post

Climatology - Database Search
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Old 16-10-2017, 10:47   #6
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Re: Climatology Plugin Data Sources

If you know of good public sources for world wide

Shipping Routes & Heavy Shipping
Fog
Lightning
Piracy
Maritime Distress SART reporting
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Old 16-10-2017, 13:35   #7
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Re: Climatology Plugin Data Sources

If you click "config" from the climatology dialog and see the "about" tab the sources are listed.
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Old 17-10-2017, 06:46   #8
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Re: Climatology Plugin Data Sources

Thanks all, this is great info for what I needed to know.
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Old 22-02-2018, 16:27   #9
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Re: Climatology Plugin Data Sources

With the current warming trend in the world, it seems like weather patterns are changing pretty quickly.

It must have been a massive effort to put the Climatology database together (thank you very much!!), and I know how much the location of and access to the data has been changing...

Wondering if there is planned an attempt to update the data, especially the hurricane/cyclone/typhoon tracks. The Source Forge database was posted in 2015, so it probably only contains data up to around 2014??

Thanks for all you do, guys!!

Sherry
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Old 22-02-2018, 20:11   #10
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Re: Climatology Plugin Data Sources

Yes, actually my plan to display changing patterns.

Maybe the easiest is a checkbox to use either the full 30 years, or only the last 10. 10 years is not long enough, so anomalies will exist.

Otherwise, what would you suggest the best way to highlight changing weather patterns?
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