Pilot Chart Usage

[seandepagnier]

Originally Posted by belizesailor

At the moment, I only have OC on Android so no Climatology plug in. Plus, I like multiple source of info, Cornell's book has more than just a weather route display in it.

the climatology plugin has a lot of data not in the book as well.. In any case, which displays do you mean? We can add them to climatology.

[Paul L]

Originally Posted by boat_alexandra

The climatology plugin uses the same data as well as more.

Where is the OpenCpn climatology data sourced from? The Cornel data is sourced from the ASCAT satellite history data, not from the published pilot chart data.

[belizesailor]

Originally Posted by boat_alexandra

the climatology plugin has a lot of data not in the book as well.. In any case, which displays do you mean? We can add them to climatology.

Im referring to his narrative information in the World Cruising Routes book, not in his Atlas.

[seandepagnier]

Originally Posted by Paul L

Where is the OpenCpn climatology data sourced from? The Cornel data is sourced from the ASCAT satellite history data, not from the published pilot chart data.

I contacted ivan cornell and asked him his sources. That's what I used for climatology.

It says in the plugin in the config, about tab exactly where the data can be downloaded.

[Paul L]

Originally Posted by boat_alexandra

I contacted ivan cornell and asked him his sources. That's what I used for climatology.

It says in the plugin in the config, about tab exactly where the data can be downloaded.

That's really useful:

. Blended Sea Winds
The Blended Sea Winds dataset contains globally gridded, high-resolution ocean surface vector winds and wind stresses on a global 0.25° grid, and multiple time resolutions of six-hourly, daily, monthly, and 11-year (1995–2005) climatological monthlies

[did-g]

Originally Posted by boat_alexandra

the climatology plugin has a lot of data not in the book as well.. In any case, which displays do you mean? We can add them to climatology.

Latest cyclones?

European MyOcean have some data too (with reanalysis) may worth some update or backtesting.

[rgleason]

Since we are now discussing Databases for the Climatology Plugin, would you guys mind moving the discussion over to this "Climatology Database" Thread?

It helps to keep all of these ideas and sources in one place! Kind of a place to "hold your thought!"

http://www.cruisersforum.com/forums/...ml#post2313039

[belizesailor]

Originally Posted by did-g

Latest cyclones?

European MyOcean have some data too (with reanalysis) may worth some update or backtesting.

NOAA has historic tracks back to 1800-something.

[rgleason]

NOAA has historic tracks back to 1800-something.

That is what Climatology uses. Sean took some efforts getting these working because the data was so varied and numerous, we could not believe how many cyclones there were that were recorded.

[Moo]

Originally Posted by Paul L

Where is the OpenCpn climatology data sourced from? The Cornel data is sourced from the ASCAT satellite history data, not from the published pilot chart data.

Cornel's books are old hat. Very little useful information in any of them when you get down to the nuts and bolts of it. The atlas is particularly bad as all the data is available online and in a more up to date form. Just the way it is, no arguments.

[Paul L]

Originally Posted by Moo

Cornel's books are old hat. Very little useful information in any of them when you get down to the nuts and bolts of it. The atlas is particularly bad as all the data is available online and in a more up to date form. Just the way it is, no arguments.

Clearly no arguments for you.
Of course the majority of long distance cruisers actually making passages reference the book before planning a passage and keep it onboard.
The atlas presents up to date data in a familiar pilot chart form. Sometimes paper is just a nice way to absorb info.

[Moo]

Originally Posted by Paul L

Clearly no arguments for you.
Of course the majority of long distance cruisers actually making passages reference the book before planning a passage and keep it onboard.
The atlas presents up to date data in a familiar pilot chart form. Sometimes paper is just a nice way to absorb info.

I don't know anybody who has it aboard. I know people who have pilot charts and the Admiralty sailing routes of the world book; which I highly recommend. The OCPN climatology tool is very useful, the data easily updated every now and again.

Both a bit older but more useful than JCs books.

Face it; publishing an atlas from satellite data gathered over a short period by a now defunct satellite is producing something that is out of date before it is printed. There are new satellites and sources continuously updating the averages that his data was derived from. It was smart publicity; I'll give him that.

I like books too but all reference books are out of date as they come off the press, some faster than others.

[Paul L]

Originally Posted by Moo

I don't know anybody who has it aboard......

Are you really saying you do not know any cruiser who has Cornell's World Cruising Routes onboard? It really is amazingly common on cruising boats and I doubt they hide it from you.

[conachair]

Originally Posted by Paul L

Are you really saying you do not know any cruiser who has Cornell's World Cruising Routes onboard? It really is amazingly common on cruising boats and I doubt they hide it from you.

Absolutely! Not every long distance cruising boat has a copy of world cruising routes, but as often as not when you get invited onboard one for a cuppa or beer there will be copy on the bookshelf.

[belizesailor]

Problem solved: revived my old Dell Laptop and gave it new life by installing Navigatrix on it. Now it has a real operating system plus grown up OPENCPN.

The Climatology plug in is way cool. A definate benefit of it vs traditional pilot charts is the ability to dynamically change date down to day granularity. This lets you watch gradual seasonal changes in motion...like the subtle SE the Trades in the NW Carib make around May.

Thanks much for the effort!