“2019 years”. climate-lab-book.ac.uk (January 30, 2020). February 2, 2020時点のオリジナルよりアーカイブ。February 2, 2020閲覧。 ("The data show that the modern period is very different to what occurred in the past. The often quoted Medieval Warm Period and Little Ice Age are real phenomena, but small compared to the recent changes.")
“2019 years”. climate-lab-book.ac.uk (January 30, 2020). February 2, 2020時点のオリジナルよりアーカイブ。February 2, 2020閲覧。 ("The data show that the modern period is very different to what occurred in the past. The often quoted Medieval Warm Period and Little Ice Age are real phenomena, but small compared to the recent changes.")
