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Tuesday, 2 May 2017

Tropospheric Warming

Another comment on Eschenbach's blog:

"does not a tropospheric record of warming over the past 35 years that is less then 1/3 of the projected computer model mean for the troposphere, ( note, not just the missing hotspot) cause you to question the deeply adjusted surface record.

At any rate, whatever the cause of the surface warming, ( real warming, UHI, one way adjustments, etc…) Per CAGW theory, the surface warming CANNOT be from CO2, as that surface warming must occur as a result of prior tropospheric warming."

To answer the first question, according to Sherwood et al (2008), there was indeed some controversy about tropospheric warming, with some scientists observing changes that are inconsistent with modelling.  However, this was due to errors in the recording mechanisms that have now been corrected.

Turning to Skeptical Science again, modern satellite data does now "show warming in the troposphere that is consistent with the surface temperature record". John Christy and Ben Santer of University of Alabama in Huntsville (UAH, 2006) have this to say:

"This significant discrepancy no longer exists because errors in the satellite and radiosonde data have been identified and corrected. New data sets have also been developed that do not show such discrepancies."

More information on this can be accessed here.

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