from the UNAM considers erroneous reports on global climate change
brief era of ice in 2010
warming should include other kinds of factors, such as
volcanoes and human action, but also outside the solar activity,
said Victor Velasco, the Institute of Geophysics.
recent collapse of a bridge in the South American glacier
was due to pressure exerted on water ice, not climate
Photo: Luca Galuzzi
expert from the National Autonomous University of Mexico predicted
that in about ten years the Earth will enter a "little ice
age" which will last from 60 to 80 years and may be caused by
the decrease in solar activity.
Manuel Velasco Herrera, a researcher at the Institute of
Geophysics of the UNAM, as argued earlier during a conference that
teaches at the Centre for Applied Sciences and Technological
event, the specialist in remote sensing systems said that the
recent rupture of the Argentine Perito Moreno glacier, unusual for
having produced a full austral winter, was not due to global
was due, he said, a natural process caused by temperature and
precipitation of the river.
Herrera described as erroneous predictions of the
Intergovernmental Panel on Climate Change (IPCC), pursuant to
which the planet is experiencing a gradual increase in
temperature, the so-called global warming.
and forecasts of the IPCC "is incorrect because only are
based on mathematical models and presented results at scenarios
that do not include, for example, solar activity," said the
specialist also in image processing and signs and prevention of
phenomenon of climate change, he added, should include other kinds
of factors, both internal, such as volcanoes and the very human
activity, and external, such as solar activity.
the star never has been seen as a cooling agent, but warming, but
has two roles", he said.
present, assured the world is going through a transition phase
where solar activity diminishes considerably, "so that in two
years or so, there will be a small ice age that lasts from 60 to
80 years," and the immediate consequence of this He added,
will be drought.
researcher who used the term has already been used previously to
indicate periods of cooling.
In particular there is the so-called "Little Ice Age",
which refers to a cold period that lasted since the beginning of
the fourteenth century until the mid-nineteenth century.
of the IPCC concluded that it was regional phenomena or
accentuation local "Current evidence does not support
globally synchronous periods of abnormal heat or cold in this
timeframe," said his 2001 report.
Herrera said in his conferecia landslides that glaciers are
recurring events that occur even in winter, as was the case of the
process begins when training, located in one arm of Lago Argentino,
moving up to the tip of the peninsula of Magellan, covering the
drainage channels," he said.
exits, the water level rises of 20 meters and, therefore, exerts
more pressure on the ice, "which culminates with the release
of huge ice blocks, as occurred last July 9," explained .
Moreno, approximately 200 square kilometres, is in the Andes,
between Argentina and Chile, and is one of the few stable glaciers
in the world.
of the glacier is about 2.8 kilometers long and has a height of
about 70 meters above the water level of the lake, although the
wall of ice reaches his bed.
the area are signs that the glacier, whose previous rupture
occurred in March 2006, was much more extensive centuries ago.
this century glaciers are growing", as seen in the Andes,
Perito Moreno, Logan, the highest mountain in Canada, and with
Franz-Josef Glacier, New Zealand, said Velasco Mr. Herrera.
prognosis on the emergence of a new Ice Age has little uncertainty
as to their dates. The
latest, according to Victor Manuel Velasco, could arrive in
approximately two years.
lecture he gave at the beginning of last December, the same expert
had said that the cooling would arrive within 30 or 40 years.
And at the
beginning of July, Velasco Herrera said that satellite data
indicate that this period of global cooling could even have
already begun, since 2005.