The
melting cryosphere
Image credit: 1960 photo Bradford Washburn; 2005 photo David Arnold/ Panopticon Gallery, Boston.
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Most
of the worlds glaciers and ice caps are shrinking at an astonishing
rate (compared to the worst case predictions being made just a few
years ago), and a variety of projects have showcased this fact. This
pair of photos released by NASA shows the changes in the 45 years
between August 1960 and 2005 (August 16, 1960 9.00 am and August 18,
2005 at 9.10 am respectively) on the iconic Matterhorn (aka Cervino,
whose geology we covered in depth at http://on.fb.me/1fVu9MR,
sited
on the Swiss/Italian border.
The
loss of glaciers is evident, and proving a growing hazard to
mountaineers as rock or ice falls increase in frequency and intensity
as the glaciers and permafrost that hold many of these masses of
tectonically shattered rock that we call mountain peaks together
slowly warms and turns to mush. Similar melting caused the serac (an
overhanging wall of glacial ice) to collapse last year onto some
working sherpas on the Khumbu icefall on Everest, since shattered by
the recent quake. As the world warms, mountains are a place where the
changes are more obvious than many others.
A note from a reader:
I
was just there. There's even less snow...and I was in short sleeves
at 10,000 feet.
To see the same process in the Nepalese Himalayas read Kevin Hester's story
Kevin
Hester’s trip to Nepal
Trekking
in Nepal to study the effects of Abrupt Climate Change, feel free to
use the pictures as you wish on the basis of the creative commons.
The purpose of the trip is to identify the consequences of abrupt
climate change on Nepal and to hopefully study the effect of aerosol
and black soot on the albedo effect/ reflectivity of the snow and
ice.
Everest
to the right in the distance with the ever present vapour trail.
Followthe
ridge line down and on the central forested ridge is Temboche
Monastery our destination, circa 4000m. Note how high the snow line
is.
This
photo was taken in the Annapuna mountains in the Himalaya at 4000m
with the snow line 500m above us.
Read
his account of Kevin’s trIp HERE
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