climate

I did say “Only 37 of 58 sources list raw data”.
“37 of 58 represents the fraction of data sets”,
yes that is exactly what I said.

” not the fraction of raw data,”
I did not make that claim.

“You have denied for years that there are more than 5000 stations in the world ”

I have denied the number of active stations in the world.
There is a difference. Take
“International Surface Temperature Initiative (ISTI), . This release in its recommended form consists of over 30 000 individual station records, some of which extend over the past 300 years.”
this gives 30 thousand stations which are mostly inactive or extinct.
Station locations existing within the last 300 years with at least 1 month of data are used in GHCN-M version 3 (a).
Station locations during the periods 1871–1900 (b), 1931–1960 (c), 1961–1990 (d), and 1991–2013 (e) are also shown.

Or take
(GHCN-M) dataset in 1992, more than 6000 stations. A second version of GHCN-M, containing 7280 stations in 1997 in 2011, a third version of GHCN-M.
which says makes Routine updates for about 2000 stations are made on a daily basis.

Or
NASA’s GISS dataset 6000 stations.
A bit of tight squeeze as  Since version 2, GHCN-M has been a major component in the GISS data set. A bit hard to fit 7280 stations into 6000 but as only 2000 are active I guess you can ignore the rest.

Then
the United Kingdom produced a first release of its CRUTEM product in the late 1980s. Today, a global dataset of over 6000 stations is still maintained in its fourth iteration. Since it also includes GHCN I guess it might have only 2000 active stations as well.

mathematically 2000active stations in the world seems to confirm  my position that “You have denied for years that there are more than 5000 stations in the world ”
Today, GHCN-D provides daily maximum and minimum temperature for nearly 30 000 stations. Although more stations exist on the daily scale
Given the historical nature of data creation, sharing, and rescue, there are many cases where a single station exists in multiple data sources.
the duplicate records do not necessarily have identical temperature values for the same station even though they are based upon the same fundamental measurements.
There are 194,367 station records used
Although the preference is to have data as raw as possible, there are times where such data do not exist, or have not been provided to the databank. Therefore pre-processed data are accepted
GHCN-D was selected to be the highest priority, or target dataset, and the monthly dataset derived from it is the starting point for the merge process. GHCN-D is regularly reconstructed, usually every weekend, from its 25-plus data sources to ensure it is generally in sync with its growing list of constituent sources
the U.S.-based Cooperative Observer Program (COOP) Summary of the Day data set. These sources provide data for more than 2500 stations worldwide, and they remain the primary sources for updates to version 3.
[25] CLIMAT bulletins transmitted via the Global Telecommunication System (GTS) provide data each month for approximately 1400 GHCN-M stations in more than 125 countries and territories.
Locations of the approximately 2300 GHCN-M stations for which data are routinely available.

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angech

harry@asoliduniverse.com

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