>>「元々そういう論文が無い」場合にその他のソースを使うのは普通だし。

確かに"そういう"論文はなかったからな。
査読論文には、兆候は見当たらん「There is no sign」って書いてあるし。

・ Glacier mass balance: the first 50 years of international monitoring
There is no sign of any recent global trend towards increased glacier melting,
and the data mainly reflect variations within and between regions.

・ Conflicting Signals of Climatic Change in the Upper Indus Basin
This suggests that the western Himalayas are showing a different response
to global warming than other parts of the globe.