Read other letters about this article
1) The current consensus is rapidly melting, way more rapidly and permanently than any ice caps.
2) Consensus is useful determining what a group THINKS is right but not what is true.
3) The researchers, as noted in a long-ago post on this topic, have been under pressure from people who threaten their grants, etc. If you think they aren't swayed by the prospect of losing grant money, I think you are underestimating.
4) The researchers who have spoken out as contrarians to the "consensus" have been hassled most thoroughly by the left-wing Church of Global Warming Inquisitors.