It is a pity. Prof. Roger Pielke Sr ended to run his invaluable weblog “Climate Science: Roger Pielke Sr.“ on November 13, 2012, which he had started with a post on the topic “What is Climate? Why Does it Matter How We Define Climate?” on July 11, 2005. We discussed his consideration critical in 2007 (here B-211; and B-330). He, as well as his son Roger Pielke Jr. (here E-510), belong to the very few scientists that have addressed the climate definition issue critical. In the last seven years R. Pielke Sr. did it frequently. In a post on June 15, 2012 (HERE) he commended once again: “The terminology in the field of climate and environmental science is filled with jargon words and the misuse of definitions.” Particularly he opposes the term “climate change”, because the term is being extensively used to mean “anthropogenic caused changes in climate” from nearly ”static“ climatic conditions. Instead only the term “climate” or “climate system” should be used, concluding that the post shall “alert others to the frequent mischaracterization of the climate system”. Regrettably his considerations lack even basic clarity and do not end the mischief in the disastrous climate terminology. Nothing is solved if “climate change” is replaced by “climate system”. It would require saying precisely and in a meaningful way what “climate” is.

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