Peru inventor 'whitewashes' peaks to slow glacier melt

Jun 28, 2010 by Bayly Turner
This undated file picture shows part of the Pastoruri snowcapped mountain in the central Peruvian Andes, 450 km east of Lima. In a remote corner of the Peruvian Andes, men in paint-daubed boilersuits diligently coat a mountain summit with whitewash in an experimental bid to recuperate the country's melting glaciers.

In a remote corner of the Peruvian Andes, men in paint-daubed boilersuits diligently coat a mountain summit with whitewash in an experimental bid to recuperate the country's melting glaciers.

It's a bizarre sight at 4,756 metres (15,600 feet) above sea level.

The man behind the idea is not a but an inventor, Eduardo Gold. His non-governmental organisation Glaciares de Peru was one of 26 winners of the World Bank's "100 Ideas to Save the Planet" competition in November 2009.

Gold has already begun work while he waits for the 200,000-dollar prize money to fund his pilot project. His plan is to paint a total area of 70 hectares (173 acres) on three peaks in the Andean region of Ayacucho in southern Peru.

Chalon Sombrero, the name of an extinct glacier which used to irrigate a valley and several rivers, is where he's started with a team of four men from the local village, Licapa.

The workers use jugs - rather than paintbrushes - to splash the whitewash onto loose rocks around the summit. So far they have painted some two hectares, just a tenth of the total area they aim to cover on that peak.

"A white surface reflects the sun's rays back through the atmosphere and into space, in doing so it cools the area around it too," explains Gold.

"In effect in creates a micro-climate, so we can say that the cold generates more cold, just as heat generates more heat."

The idea is based on the simple scientific principle that changing the albedo (a measure of how strongly an object reflects light) of a surface by whitening it means that it does not absorb so much heat and emit infra-red radiation which takes time to leave the earth's atmosphere and warms trapped .

US Energy Secretary Steven Chu has endorsed using white roofs in the United States to help combat climate change, an idea seen as more logistically feasible than painting mountain peaks.

Gold, who has no scientific qualifications, adds: "I'm very hopeful that by doing this we could re-grow a glacier here because we would be recreating all the climactic conditions necessary for a glacier to form.

In his 65 years, Pablo Parco Palomino has seen the Chalon Sombrero summit turn from an imposing snow-capped glacier into bare rock. Climate change has made life much harder in Licapa, so much so that he believes the scattered population of around 900 may have to move elsewhere.

"All the peaks here should be painted in this way," he says. Like him, most of the community welcomed Gold's pilot project, hopeful that the peak might freeze over again.

"That way there would be as much water as there was before the glacier disappeared, and that would mean more pasture to support more livestock."

Licapa is above the tree-line. At more than 4,000 metres above sea level crops or trees don't grow. The people live mainly from selling their alpacas' wool.

Although the project has been awarded funding by the World Bank, scientists have dismissed its contention that it could actually halt or reverse glacial melt.

But on a small scale it might have an impact, concedes Thomas Condom, a glaciologist and hydrologist working at the French Institute for Research and Development of Lima, which has been monitoring tropical glaciers in the Andes for the past 15 years.

"It might be possible to slow down a little the melting, to gain a drop of a few tenths of a Celsius, or maybe one or two degrees Celsius, on a local scale."

But the temperature and reflected radiation are only two of the factors impacting on the glaciers, he adds. Precipitation is another crucial one. Moreover, the project would be very difficult to implement on a large regional scale.

Peru is home to more than 70 percent of the world's tropical glaciers but global warming has already melted away 22 percent of them in the last 30 years, according to a World Bank report in 2009.

Peru's Environment Minister Antonio Brack has said the World Bank's 200,000 dollars in funding would be better spent on other "projects which would have more impact in mitigating climate change."

"It's nonsense", he commented bluntly last year.

But Gold believes he can put the theory into practice and get results.

"I'd rather try and fail to find a solution than start working out how we are going to survive without the glaciers, as if the situation was irreversible," he says.

Explore further: Dutch unveil big plan to fight rising tides

add to favorites email to friend print save as pdf

Related Stories

Scientists expect increased melting of mountain glaciers

Jan 20, 2006

Sea level rise due to increased melting of mountain glaciers and polar ice caps will be much lower in the 21st Century than previously estimated. However, decay of mountain glaciers in due to global warming will be much more ...

Norwegian glaciers could melt completely

Apr 07, 2006

Climate researchers predict that the approximately 1,600 Norwegian glaciers could melt completely away in course of the next 100 years. This would mean that only 28 glaciers would remain in the country.

Glaciers feeding Ganges may melt down

Jul 01, 2005

Indian scientists say carbon dioxide and other emissions will cause the melt down of glaciers feeding the Ganges River before the century's end.

Shrinking glaciers threaten China

Nov 02, 2007

China's glaciers in western Xinjiang Uygur region are shrinking alarmingly due to global and regional warming, posing a threat to the oases in the area.

2 more glaciers gone from Glacier National Park

Apr 07, 2010

(AP) -- Glacier National Park has lost two more of its namesake moving icefields to climate change, which is shrinking the rivers of ice until they grind to a halt, a government researcher said Wednesday.

Recommended for you

Dutch unveil big plan to fight rising tides

5 hours ago

The Netherlands on Tuesday unveiled a multi-billion-euro, multi-decade plan to counter the biggest environmental threat to the low-lying European nation: surging seawater caused by global climate change.

Drought hits Brazil coffee harvest

7 hours ago

Coffee output in Brazil, the world's chief exporter, will slide this year after the worst drought in decades, agricultural agency Conab said Tuesday.

Landmark fracking study finds no water pollution

9 hours ago

The final report from a landmark federal study on hydraulic fracturing, or fracking, has found no evidence that chemicals or brine water from the gas drilling process moved upward to contaminate drinking water at one site ...

Politics divide coastal residents' views of environment

10 hours ago

From the salmon-rich waters of Southeast Alaska to the white sand beaches of Florida's Gulf Coast to Downeast Maine's lobster, lumber and tourist towns, coastal residents around the U.S. share a common characteristic: ...

User comments : 4

Adjust slider to filter visible comments by rank

Display comments: newest first

ArtflDgr
1 / 5 (2) Jun 28, 2010
and did they check if the "white wash" only worked on visable light, or did it also reflect the huge amount of infrared?

ie. the snow does that better than the whitewash...

and so the result is the opposite of what they intend
TegiriNenashi
4 / 5 (1) Jun 28, 2010
Am I in "oddly enough" Reuters section? Oh, never mind, its global warming, and global warming is a magnet for all kinds of nutjobs
http://www.number...list.htm
.
mikiwud
1 / 5 (3) Jun 29, 2010
If they run short of whitewash, there is an ample supply in the UK due to the CRU inquiries!
Arkaleus
1 / 5 (3) Jun 30, 2010
Lolz, "Who's been painting my roses red?"

More nutcrackerry from the UK. I assume this fellow is extracting sunbeams from cucumbers when not attempting to hold up the sky from falling on us all.