Warming in the 20th century was on average twice as large in the northern continents as it was in the Southern Hemisphere.During the past 2000 years, some regions experienced warmer 30-year intervals than during the late 20th century.
The study also found that Europe’s 2003 heat wave and drought, which killed an estimated 70,000 people, happened during Europe’s hottest summer of the last 2,000 years.
“Summer temperatures were intense that year and accompanied by a lack of rain and very dry soil conditions over much of Europe,” said study co-author Jason Smerdon, a climate scientist at Lamont-Doherty and one of the lead contributors to the Europe reconstruction.
21, 2013 — Fueled by industrial greenhouse gas emissions, Earth’s climate warmed more between 19 than during any other three-decade interval in the last 1,400 years, according to new regional temperature reconstructions covering all seven continents.
This period of humanmade global warming, which continues today, reversed a natural cooling trend that lasted several hundred years, according to results published in the journal “This paper tells us what we already knew, except in a better, more comprehensive fashion,” said study co-author Edward Cook, a tree-ring scientist at Lamont-Doherty Earth Observatory who led the Asia reconstruction.
Survival International said that more than 30 percent of Awa territory has been deforested and that loggers are “rapidly closing in on their communities and have already been marking trees for deforestation.
It quotes an Awa Indian called Haikaramoka’a, as saying: “The loggers are ruining our forest. We are scared; they could go after the uncontacted Indians.
“Distinctive periods, such as the Medieval Warm Period or the Little Ice Age stand out, but do not show a globally uniform pattern,” said co-author Heinz Wanner, a scientist at the University of Bern.
By 1500, temperatures dropped below the long-term average everywhere, though colder temperatures emerged several decades earlier in the Arctic, Europe and Asia.
The organization said the Awa tribe “is at extreme risk of extinction.” It added that Funai, Brazil’s indigenous affairs agency was “still waiting for support from the Justice Ministry, the federal police and central government to evict the invaders.” Funai’s press office said it had no immediate comment.
Calls to the Justice Ministry and federal police went unanswered.
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