The ‘Woody Guthrie award for a thinking blogger’ goes to John Nielsen-Gammon. A professional climatologist, he also writes a very readable and insightful blog entitled Climate Abyss.
He writes about different topics, often on scientific issues (e.g. extreme weather) and occasionally also on the science-policy interface or science as a process. He is scrupulous about distinguishing these different aspects though: The physics is what it is, irrespective of his or other people’s political viewpoints (about which he hardly ever writes, if at all).
I admire his writing for its scientific honesty, the clarity of expositions and the insights that they provide. From his forays over to CE and CA he has also shown himself to be a skilled e-debater: He understands climate change and knows how to discuss both the big picture and quite a string of detailed issues. One other thing I’d like to mention is that he seems to be a good bridge builder: Probably because he studiously refrains from appearing political, doesn’t eschew working together with contrarians (e.g. he co-authored a paper withWatts), and is respectful in his communications, he seems to be respected by (at least the less fanatical of the) contrarians. He does so without giving up on his scientific integrity however (he will still call a spade a spade), so it doesn’t (afaik) go at the cost of being respected by fellow scientists and mainstream science-minded bloggers. Kudos to John!
Read this interview to get a feel for his scientific persona. He also has a wikipedia page. See Willard for a collection of memorable ‘John N-G’ quotes.