A Modtran Mystery

Guest Post by Willis Eschenbach I’ve been messing about with the “Modtran” online calculator for atmospheric absorption. It’s called “Modtran” because it is a MODerate resolution program to calculate atmospheric infrared absorption written in ForTRAN, which calculates the result for each 1 cm-1 wide band of the wavenumber across the spectrum. Not quite a “line-by-line” calculation, but…

Marginal Parasitic Loss Rates

Guest Post by Willis Eschenbach There is a more global restatement of Murphy’s Law which says “Nature always sides with the hidden flaw”. Parasitic losses are an example of that law at work. In any heat engine, either natural or manmade, there are what are called “parasitic losses”. These are losses that tend to reduce…

Water Vapor Feedback

Guest Post by Willis Eschenbach Well, another productive ramble through the CERES dataset, which never ceases to surprise me. This time my eye was caught by a press release about a new (paywalled) study by Gordon et al. regarding the effect of water vapor on the climate: From 2002 to 2009, an infrared sounder aboard…

Three Clocks

Guest Post by Willis Eschenbach I got to wandering through the three main datasets that make up the overall CERES data, and I noticed an odd thing. The three main datasets are the all-sky downwelling solar, upwelling reflected solar, and upwelling longwave radiation, measured in watts per square metre (W/m2). Here are those three datasets:…

Cancelling the Tropical Cancellation

Guest Post by Willis Eschenbach There’s a much-cited paper (129 citations) from 1994 called “On the Observed Near Cancellation between Longwave and Shortwave Cloud Forcing in Tropical Regions” by J. T. Kiehl (hereinafter Kiehl1994), available here. The paper makes the following claim (emphasis mine): ABSTRACT Observations based on Earth Radiation Budget Experiment (ERBE) satellite data indicate that…

Video: Comments on Human-Induced Global Warming – Episode 1 – The Hiroshima Bomb Metric

With much fanfare from the faithful (a grand total of 15 comments as of this writing), SkepticalScience recently released their 4-Hiroshima-Bombs-per-second widget. Their claimed intent is to “raise the awareness of global warming”. Nonsense. Their intent is to scare people—children and adults—into believing that something must be done about global warming. It’s nothing but propaganda—plain…