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Himalaya glacier deadline 'wrong'

December 7, 2009

By Pallava Bagla in Delhi
http://news.bbc.co.uk/go/pr/fr/-/2/hi/south_asia/8387737.stm
Published: 2009/12/05 10:04:34 GMT

The UN panel on climate change warning that Himalayan glaciers could
melt to a fifth of current levels by 2035 is wildly inaccurate, an
academic says.

J Graham Cogley, a professor at Ontario Trent University, says he
believes the UN authors got the date from an earlier report wrong by
more than 300 years.

He is astonished they "misread 2350 as 2035". The authors deny the claims.

Leading glaciologists say the report has caused confusion and "a
catalogue of errors in Himalayan glaciology".

The Himalayas hold the planet's largest body of ice outside the polar
caps - an estimated 12,000 cubic kilometres of water.

They feed many of the world's great rivers - the Ganges, the Indus, the
Brahmaputra - on which hundreds of millions of people depend.

'Catastrophic rate'

In its 2007 report, the Nobel Prize-winning Inter-governmental Panel on
Climate Change (IPCC) said: "Glaciers in the Himalayas are receding
faster than in any other part of the world and, if the present rate
continues, the likelihood of them disappearing by the year 2035 and
perhaps sooner is very high if the Earth keeps warming at the current rate.


? It is not plausible that Himalayan glaciers are disappearing
completely within the next few decades ?

Michael Zemp, World Glacier Monitoring Service

"Its total area will likely shrink from the present 500,000 to 100,000
square kilometres by the year 2035," the report said.

It suggested three quarters of a billion people who depend on glacier
melt for water supplies in Asia could be affected.

But Professor Cogley has found a 1996 document by a leading hydrologist,
VM Kotlyakov, that mentions 2350 as the year by which there will be
massive and precipitate melting of glaciers.

"The extrapolar glaciation of the Earth will be decaying at rapid,
catastrophic rates - its total area will shrink from 500,000 to 100,000
square kilometres by the year 2350," Mr Kotlyakov's report said.

Mr Cogley says it is astonishing that none of the 10 authors of the 2007
IPCC report could spot the error and "misread 2350 as 2035".

"I do suggest that the glaciological community might consider advising
the IPCC about ways to avoid such egregious errors as the 2035 versus
2350 confusion in the future," says Mr Cogley.

He said the error might also have its origins in a 1999 news report on
retreating glaciers in the New Scientist magazine.

The article quoted Syed I Hasnain, the then chairman of the
International Commission for Snow and Ice's (ICSI) Working group on
Himalayan glaciology, as saying that most glaciers in the Himalayan
region "will vanish within 40 years as a result of global warming".


When asked how this "error" could have happened, RK Pachauri, the Indian
scientist who heads the IPCC, said: "I don't have anything to add on
glaciers."

The IPCC relied on three documents to arrive at 2035 as the "outer year"
for shrinkage of glaciers.

They are: a 2005 World Wide Fund for Nature report on glaciers; a 1996
Unesco document on hydrology; and a 1999 news report in New Scientist.

Incidentally, none of these documents have been reviewed by peer
professionals, which is what the IPCC is mandated to be doing.

Murari Lal, a climate expert who was one of the leading authors of the
2007 IPCC report, denied it had its facts wrong about melting Himalayan
glaciers.

But he admitted the report relied on non-peer reviewed - or
'unpublished' - documents when assessing the status of the glaciers.

'Alarmist'

Recently India's Environment Minister Jairam Ramesh released a study on
Himalayan glaciers that suggested that they may be not melting as much
due to global warming as it is widely feared.

He accused the IPCC of being "alarmist".


Mr Pachauri dismissed the study as "voodoo science" and said the IPCC
was a "sober body" whose work was verified by governments.

But in a joint statement some the world's leading glaciologists who are
also participants to the IPCC have said: "This catalogue of errors in
Himalayan glaciology... has caused much confusion that could have been
avoided had the norms of scientific publication, including peer review
and concentration upon peer-reviewed work, been respected."

Michael Zemp from the World Glacier Monitoring Service in Zurich also
said the IPCC statement on Himalayan glaciers had caused "some major
confusion in the media".

"Under strict consideration of the IPCC rules, it should actually not
have been published as it is not based on a sound scientific reference.

"From a present state of knowledge it is not plausible that Himalayan
glaciers are disappearing completely within the next few decades. I do
not know of any scientific study that does support a complete vanishing
of glaciers in the Himalayas within this century."

Pallava Bagla is science editor for New Delhi Television (NDTV) and
author of Destination Moon - India's quest for Moon, Mars and Beyond.

Story from BBC NEWS:
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