GISS Land-Ocean Index dives in Jan08, exceeding drops for UAH and RSS satellite data

Goddard Institute for Space Studies (GISS) Land-Ocean Global temperature index data was released yesterday for the month of January, 2008. Like we’ve reported before for other datasets, including the RSS and UAH satellite temperature anomalies, GISS also had a sharp drop in January.

The GISS ΔT was -.75°C, which is larger than the satellite data from UAH ∆T of -.588°C and the RSS RSS ∆T of -.629°C

click for larger image

The ΔT of -.75°C from January 2007 to January 2008 appears to be the largest single year to year January drop for the entire GISS data set.

This is yet one more indication of the intensity of planet-wide cooler temperatures seen in January 2008, particularly in the Northern Hemisphere, which has seen record amounts of snow coverage extent as well as new record low surface temperatures in many places.

(h/t) moshpit

NOAA Dichotomy in Action

I was looking for something else, and stumbled across this USA Today report from 2006:

Record wind won’t be grandfathered in

Winds atop Grandfather Mountain, near Linville, N.C., will not be certified by the National Weather Service. Late on Tuesday or early Wednesday, the anemometer that measures the wind speed at the visitors center topped out at 200 mph. However, because the wind gauge is located on the building’s roof, it is not sited according to National Weather Service standards, and its records will not be certified by the NWS or state climatologist’s office. See the full story

But, but…

NOAA USHCN climate station on the roof of the Baltimore Customs House
How not to measure temperature part 49

Baltimore USHCN climate station of record, circa 1990’s photo courtesy NOAA, click photo for more images