As far as i was aware the climate sensitivity issue still remains, as too do the questions over
the validity of the temperature records (raising the distinct possibility that the change you are trying to detect is smaller than the error limits themselves) and the modelling parameters.
How this really changes things when it comes to
the validity of temperature records is never made clear and in addition the folks at WUWT who are trying to push this meme seem to me to be trying to confuse the issue by making references to Leroy 1999 and Leroy 2010 as though these were peer reviewed papers, which I can't find any evidence of.
Not exact matches
It seems that attacks on the
validity of the surface
temperature record as an attempt to cast doubt on the recent warming trend would have been a bit more convincing back in the day when there were competing satellite
temperature records that suggested a cooling trend.
«One demanding test
of the
validity of the computer simulations
of the climate
of the earth is based on
temperature records from the Arctic... When tested against the Arctic
temperature record, therefore, the computer forecasts are seen to exaggerate the projected warming by a large amount.»
It seems that attacks on the
validity of the surface
temperature record as an attempt to cast doubt on the recent warming trend would have been a bit more convincing back in the day when there were competing satellite
temperature records that suggested a cooling trend.
Steve's work makes no comment on studies
of, say, sea level or the
validity of the global
temperature instrument
record, proxy studies unrelated to MBH, or any
of the other myriad pieces that the IPCC relies on.
However, the relocation
of Stevenson Screen
recording stations around Perth, coinciding with different
temperature plateaux, raises questions about the
validity of trends since 1897 and claims
of record hot years that precede 1994.
And yet no one proposes spending fifteen billion dollars to properly study the
validity of the surface
temperature record of the United States.
It's also worth noting that Muller himself has been careful not to pronounce on AGW, only the
validity of the global land
temperature record.
It has no more
validity than Steven Goddard's cries
of «fraud» in regard to the USHCN
temperature record.