According to Wikipedia, Ian Rutherford Plimer is an Australian geologist and professor emeritus at the University of Melbourne. He rejects the scientific consensus on climate change. He has been criticised by climate scientists for misinterpreting data and spreading misinformation.
Number of citations in a given year to any of this author's works
Total number of citations to an author for the works they published in a given year. This highlights publication of the most important work(s) by the author