Hans Erren observes: one other serious complication exists in the real world which we shouldn’t overlook. There are two stable tropopause heights observed in the atmosphere: Tropical tropopause Arctic tropopause At their boundaries (mid lattitude) the most intersting weather occurs, where most people live and where climate change affects the most people. What will happen […]
Over the last week or so, I’ve reported on my efforts to locate the provenance of the functional forms for the relationship between levels of CO2 and other greenhouse gases and temperature. Lubo has also chipped in on the topic from a different perspective proposing a derivation of a log formula from first principles. We’ve […]
HO83 ASOS Hygrothermometer (temperature/dewpoint sensor) Much has been written about problems with artificially high temperature readings due to the HO83 aspirated air temperature/dewpoint temperature sensor used on NOAA Automated Surface Observing Stations (ASOS). The most famous problem occurred in Tucson, AZ in the mid 1980’s where a malfunctioning HO83 unit created dozens of new high […]
Reader DAV raised the following interesting question: The strange thing about 6..3.5 Simplified Equations that gets me is why should CO2, CH4 and N2O have different equational forms? And what would be the physical basis for raising something to the 0.75 or 1.52 power? The whole thing looks ad hoc as if someone was insistently […]
John A has briefly come out of retirement and set up a CA bulletin board, see here for prototype – which I’m hoping will resolve some blog operating issues. The Bulletin Board presently has 4 main forums and provides for threads within a forum like other boards. I can see a couple of advantages to […]
The IPCC defines radiative forcing at the tropopause. However, nowhere do they provide a diagram showing energy balances above the tropopause and below the tropopause – something that seems like one of the first things to do. Instead, they show the Kiehl and Trenberth cartoon which treats the atmosphere as a whole without distinguishing balances […]
Last summer I attempted to do a survey of Reno’s USHCN official climate station. But I was thwarted by its placement at the Reno International Airport due to security and lack of accessible photographic vantage points. Reno’s USHCN station is particularly important due to it being part of the test cases of stations in the […]
David Holland has written in raising an excellent point about the failure of IPCC WG1 to release the Review Editor comments. In our examination of specific issues e.g. the Briffa truncation, the handling of trends, etc., the Author Responses (online through an earlier CA initiative) show that the IPCC authors often made unconvincing and tendentious […]
Readers have written in to say that it was not the job of the IPCC to provide a self-contained exposition of the scientific issues pertaining to increased CO2. I’ve looked at a couple of statements of the role of the IPCC and there’s certainly nothing that prohibits them from providing a coherent explanation. IPCC’s website […]
Yesterday I collated IPCC AR3 and AR4 “expositions” of the enhanced greenhouse effect, observing that, in my opinion, they were so baby food as to be essentially useless to a scientist from another discipline. Today I’m going to drill a little deeper in the expositions, going to a 1995 journal comment by Houghton and to […]
Climate Audit 