GWPF
"In a joint press conference NOAA and NASA have just released data for the global surface temperature for 2013. In summary they both show that the ‘pause’ in global surface temperature that began in 1997, according to some estimates, continues.
Statistically speaking there has been no significant trend in global temperatures over this period. All these years fall within the error bars of 0.1 deg C. The trend is less than this and is statistically insignificant. There is no statistical case for representing the post-1997 data as anything other than a constant line. The graphs presented at the press conference omitted those error bars.
When asked for an explanation for the ‘pause’ by reporters Dr Gavin Schmidt of NASA and Dr Thomas Karl of NOAA spoke of contributions from volcanoes, pollution, a quiet Sun and natural variability. In other words, they don’t know.
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