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Feedback in the Presence of Unknown Radiative Forcing

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This paper by Dr. Roy Spencer examines radiative feedbacks and presents a way to separate the feedback signals from radiative forcing signals in satellite data. It shows that the radiative forcings from cloud changes give the illusion of a positive cloud feedback. The true feedback signal found in the satellite data shows a strong negative cloud feedback to temperature changes of 6 W/m2, equating to a climate sensitivity of 0.6 Celsius. This makes CO2 emissions a non-issue.


The Thunderstorm Thermostat Hypothesis

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The Thunderstorm Thermostat Hypothesis is that tropical clouds and thunderstorms actively regulate the temperature of the earth. This keeps the earth at an equilibrium temperature regardless of changes in the forcings.


Cloud and Radiation Changes with Tropical Intraseasonal Oscillations

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The composite of fifteen strong tropical intraseasonal oscillations revealed that an enhanced radiative cooling of the ocean-atmosphere system occurs during the tropospheric warm phase of the oscillation. The increase in longwave cooling is traced to decreasing coverage by high altitude ice clouds, supporting Lindzen’s ‘‘infrared iris’’ hypothesis of climate stabilization.


Clouds Have Made Fools of Climate Modelers

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A detailed analysis of cloud behavior from satellite data by Dr. Roy Spencer of the University of Alabama in Huntsville shows that clouds provide a strong negative feedback, the opposite of that assumed by the climate modelers. The modelers confused cause and effect, thereby getting the feedback in the wrong direction.


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