For example, the global retreat
in glacier lengths in evidence that the mean temperatures are rising around the globe.
This article is not really sober, jumping
from glaciers length to the french society's confidence in science, from the snowball earth to Svensmark, and so on.
So the researchers collected together records of
glacier length for 37 glaciers in North America, South America, Europe, Asia and Australasia.
Using the long - term records, the researchers estimated
how glacier lengths have varied in response to the yearly ups and downs of temperature and snowfall.
For example there is this: «There is medium confidence that the current near - global recession
of glacier length is unusual in the context of the last two millennia»
Using records of
glacier length that go back over 400 years, the researchers show that shrinking of mountain glaciers in five continents could almost certainly not have happened if the Earth wasn't warming up.
For example we have seen a sea level hockey stick, an underwater hockey stick, a South American hockey stick, an Arctic summer temperature hockey stick, a tropical glacier hockey stick, a North American mountain snowpack hockey stick,
a glacier length hockey stick, and warming of Atlantic water into the Arctic hockey stick.
Quantities such as tree ring widths, coral growth, isotope variations in ice cores, ocean and lake sediments, cave deposits, fossils, ice cores, borehole temperatures, and
glacier length records are correlated with climatic fluctuations.
In contrast to frequently made statements, Bm is not necessarily a more precise indicator of climate change than is
glacier length.