Ed Cook says that Trenberth "is extremely defensive and combative when ever criticized about anything because he figures that he is smarter than everyone else and virtually infallible"

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do know that Trenberth, [Dai's] co-author, is extremely defensive and combative when ever criticized about anything because he figures that he is smarter than everyone else and virtually infallible. [Ed Cook]
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Keith [Briffa] indicated that you discovered a computational error in Dai's program that produced unusually extreme PDSI values in some cases. (Has Dai and that miserable prat Trenberth been told about this? As you might tell, I have genuine dislike for that arrogant Kiwi) [Ed Cook]