Ocean News

Do I understand correctly that you are no longer asserting that current pilot charts "don't show this change"?

 

I get this at that site so I haven't opened it....

I suspect though that you are just posting the location of the site. Is there an information breakdown there that validates what you say?

 

The link opens for me without problem. You can search the GPO website too. The pilot charts show no significant change trend to agree with Climate Change claims. I has climate data, including sea surface temperatures collected through centuries.

 

Can you be more specific as to where the historical data can be found. At the web site you gave I've only found general ocean pilot charts, which give no historical data. For instance, here is a segment of the North Atlantic chart, for January (2002 ed.), showing Sea Surface Temperature (SST). No indication of historical temperatures, just current temperatures. Frankly, I can imagine no reason for a current pilot chart to show 100-year-old data. So at this point I am very skeptical of your initial statement "Does this article indicate the pilot charts are wrong? They don't show this change."



It probably is a moot point as to whether pilot charts show historic SST. The researchers of the paper referenced did not use pilot charts for their data, at least not directly. Rather, they used data provided by the Met Office Hadley Centre observations datasets, which is one of the major repositories of historic and current global temperatures.

 

Book Review – Cornell’s Ocean Atlas: Pilot Charts for All Oceans of the World « Blog http://www.womenandcruising.com/blog/2012/10/book-review-cornells-ocean-atlas-pilot-charts-for-all-oceans-of-the-world/

Pilot charts sound like the Farmers Almanac of the sea, an averaging of historical data with such data not being all that accurate to begin with.

 

What are you basing your claim that is not accurate. Navigators and captains keep accurate records because that is how they make a profit. If they are Navy, the keep accurate records because they are ordered to. I think that you should study a chart before belittling centuries of effort by professional mariners.

 

It seems like you made up your mind that any historic record that does not support your position is a moot point.

 

I attempt to keep my mind open to all options, but thus far you've only made unsupported assertions.

 

How can you call an assertion based on centuries of collected and cataloged data "unsupported"?

 

The link to the Atlas of Pilot Charts - the latest for the North Atlantic is only 1994

Probably the job of the boats has been taken over by satellite and remote sensors since then.

 

The article that I posted said (among other things) that in some places ocean surface temperatures have risen as much as 3-5C from 1870, and in other places it has fallen 2-3C from 1870.

In an apparent attempt to discredit that scientific study you asserted that the ocean temperatures shown on "pilot charts of decades ago are not significantly different from the ones published this year."

I've asked you numerous times to provide an example of such historic charts which show what you claim. To date you have not.

What part of the phrase "unsupported assertions" do you not understand?

(Again I will point out that the scientific study used data supplied by the Met Office Hadley Centre. I'm guessing, but don't know for sure, that they don't directly use historic pilot charts. However I could imagine that both the Hadley Centre database and historic pilot charts were derived the same underlying data.)

 

Firstly, I refer to a published document that is freely available. Secondly, I provided a link for you to download the pilot charts. I think your statement is false.

 

Well, here is a complete rebuttal of all your claims.
https://www.loc.gov/aba/cataloging/classification/lcco/lcco_q.pdf

 

Gonzo, would you be so kind as to provide the specific links for the two charts (one recent, the other from sometime in the late 1800s), which show the lack of temperature change? The charts should show the surface sea temperatures off the coast of the eastern US, and off the southern tip of Greenland, as those two areas were the ones identified as having the greatest temperature change. And if you're willing to go the extra mile, would you also post screenshots of the two charts (like I did in this post), showing the relevant data -- just so we can be sure that we're all on the same page.

 

I already did. It is in the link.