As promised, here are the first results from my little backyard experiment to investigate the role of downwelling infrared (IR) sky radiation on air temperature. (High school students looking for a science experiment, pay attention). It’s a heavily insulated box that — theoretically — should chill air at night to a temperature below that of [...]

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As a follow-up to my controversial post on the effect of infrared “back radiation” downwelling from the colder sky to the warmer surface, the existence of which some dispute (despite the real-time availability of such data), I’ve come up with an experimental setup to see how IR radiation from the sky influences air temperature near [...]

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Probably as the result of my recent post explaining in simple terms my “skepticism” about global warming being mostly caused by carbon dioxide emissions, I’m getting a lot of e-mail traffic from some nice folks who are trying to convince me that the physics of the so-called Greenhouse Effect are not physically possible. More specifically, [...]

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There is a new paper in press at the Journal of Climate that we were made aware of only a few days ago (July 14, 2010). It specifically addresses our (Spencer & Braswell, 2008, hereafter SB08) claim that previous satellite-based diagnoses of feedback have substantial low biases, due to natural variations in cloud cover of [...]

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I receive many e-mails, and a recurring complaint is that many of my posts are too technical to understand. This morning’s installment arrived with the subject line, “Please Talk to Us”, and suggested I provide short, concise, easily understood summaries and explanations “for dummies”. So, here’s a list of basic climate change questions, and brief [...]

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YR MON GLOBE NH SH TROPICS 2009 1 0.251 0.472 0.030 -0.068 2009 2 0.247 0.564 -0.071 -0.045 2009 3 0.191 0.324 0.058 -0.159 2009 4 0.162 0.316 0.008 0.012 2009 5 0.140 0.161 0.119 -0.059 2009 6 0.043 -0.017 0.103 0.110 2009 7 0.429 0.189 0.668 0.506 2009 8 0.242 0.235 0.248 0.406 2009 [...]

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What follows is the text of the speech I gave at Townhall Magazine’s 100 Americans Most Hated by the Left awards dinner that I attended last night in Washington, DC. There were 96 recipients (95, actually) who spoke before me, and most were well worth listening to. I will briefly review a few of the [...]

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The eruption of Mt. Pinatubo in the Philippines on June 15, 1991 provided a natural test of the climate system to radiative forcing by producing substantial cooling of global average temperatures over a period of 1 to 2 years. There have been many papers which have studied the event in an attempt to determine the [...]

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A new “study” has been published in the Proceedings of the National Academy of Sciences (PNAS) which has examined the credentials and publication records of climate scientists who are global warming skeptics versus those who accept the “tenets of anthropogenic climate change”. Not surprisingly, the study finds that the skeptical scientists have fewer publications or [...]

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Sea Surface Temperatures (SSTs) measured by the AMSR-E instrument on NASA’s Aqua satellite continue their plunge as a predicted La Nina approaches. The following plot, updated through yesterday (June 17, 2010) shows that the cooling in the Nino34 region in the tropical east Pacific is well ahead of the cooling in the global average SST, [...]

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