Miscellaneous Notions, Comments, and Observations

FYI: It appears that temperature data of years prior to 1880 have recently been excluded from the files available via the GISS URL: http://www.giss.nasa.gov/data/update/gistemp/station_data/

My only comments at this time are that the GHCN, from which GISS gets such temperature data, appears to include data for years prior to 1880 from less than 560 locations worldwide, but it can be interesting to see those records in their entirety.

See tempdata.htm for a list of historical surface station temperature URLs, and some related comments.

Posted (18 Jan 05)
A recent update of GHCN data included revisions of monthly mean temperature data of Australian stations for most months of 2003 and 2004. The new data appear to be more consistent with the monthly minimum, and montly maximum, data previously available in GHCN files. A spot check of several of those stations at GISS indicates that GISS is now using the revised data. For specifics, see associated text file.

Posted (2 Jan 05)
Douglas Hoyt has closed his old website at:


You might visit there and see what he has to offer.
It seems that data from about 1282 USA surface weather stations for the year 2003 have been added this month to GHCN publicly available data bases, and made their way to GISS.

If I needed a reminder to update many of the graphs in the "What the Stations Say" section of this site, that would be one. As it happens, I have received a few reminders on the subject from site visitors.

I do intend to update many of those graphs, a few at a time for a while, more rapidly if I can automate, or somehow reduce, the manual effort involved.

Posted (18 May 04)
Among the links on the main page are:

Latest Arctic Sea Ice and Snow Cover
     from University of Illinois

Daily Global Sea Surface Temperature
      from University of Wisconsin-Madison, USA

A set of alternatives have been added.

Sea Surface Temperatures
Sea Surface Temperature variances from average
   from FNMOC, USN, USA


Northern Hemisphere Sea Ice
Southern Hemisphere Sea Ice

   from FNMOC, USN, USA

The new sea surface temperature links include a variances from average display without which the current temperatures display may not be very informative.

The sea ice graphics do not include snow, but they do include both poles.

The new links are HTTPS, rather than the usual HTTP, links, so the first time that you link to them, your browser may ask you to accept a certificate which you can tell your browser to save so that it doesn't ask again.

Posted (17 May 04)


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