‘A vigorous spectrum of interdecadal internal variability presents numerous challenges to our current understanding of the climate. First, it suggests that climate models in general still have difficulty reproducing the magnitude and spatiotemporal patterns of internal variability necessary to capture the observed character of the 20th century climate trajectory. Presumably, this is due primarily to deficiencies in ocean dynamics. Moving toward higher resolution, eddy resolving oceanic models should help reduce this deficiency. Second, theoretical arguments suggest that a more variable climate is a more sensitive climate to imposed forcings (13). Viewed in this light, the lack of modeled compared to observed interdecadal variability (Fig. 2B) may indicate that current models underestimate climate sensitivity. Finally, the presence of vigorous climate variability presents significant challenges to near-term climate prediction (25, 26), leaving open the possibility of steady or even declining global mean surface temperatures over the next several decades that could present a significant empirical obstacle to the implementation of policies directed at reducing greenhouse gas emissions (27). However, global warming could likewise suddenly and without any ostensive cause accelerate due to internal variability. To paraphrase C. S. Lewis, the climate system appears wild, and may continue to hold many surprises if pressed.’ http://www.pnas.org/content/106/38/16120.full
‘Moist enthalpy hereafter referred to as equivalent temperature (TE), expresses the atmospheric heat
content by combining into a single variable air temperature (T) and atmospheric moisture. As a result, TE, rather than T alone, is an alternative metric for assessing atmospheric warming, which depicts heat
content. Over the mid-latitudes, TE and T generally present similar magnitudes during winter and early
spring, in contrast with large differences observed during the growing season in conjunction with
increases in summer humidity. TE has generally increased during the recent decades, especially during
summer months. Large trend differences between T and TE occur at the surface and lower troposphere,
decrease with altitude and then fade in the upper troposphere. TE is linked to the large scale climate
variability and helps better understand the general circulation of the atmosphere and the differences
between surface and upper air thermal discrepancies. Moreover, when compared to T alone, TE is larger
in areas with higher physical evaporation and transpiration rates and is more correlated to biomass
seasonal variability.’ http://pielkeclimatesci.files.wordpress.com/2011/11/nt-77.pdf
Which bit of science are you rejecting? Vigourous multi-decadal variability or moist enthalpy?
