One problem in past climate models has been that the troposphere did not appear to be warming as much as expected. A new report in Science indicates that a correction factor should have been applied and was not. When the correction factor is applied, warming in the troposphere is observed. I am not handy enough with the jargon to tell you what the correction factor is, or why it needs to be applied, but I thought the article was worth mentioning anyway. Here's the reference and abstract. I won't really be able to invest much beyond the abstract and reference, i.e. no time for in depth discussion. : I think this can be paraphrased to say that past reports showing no lower tropospheric warming were due to a math error.