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Dusty rainfall records reveal new understanding of Earth's long-term climate

Thu, 24 May 2018 17:45:51 EDT ~ Ancient rainfall records stretching 550,000 years into the past may upend scientists' understanding of what controls the Asian summer monsoon and other aspects of the Earth's long-term climate. Milankovitch theory says solar heating of the northernmost part of the globe drives the world's climate swings between ice ages and warmer periods. The new work turns Milankovitch in its head by suggesting climate is driven by differential heating of the Earth's tropical and subtropical regions. Find out more...

Did the Chicxulub asteroid knock Earth's thermometer out of the ballpark?

Thu, 24 May 2018 14:17:07 EDT ~ When the Chicxulub asteroid smashed into Earth 65 million years ago, the event drove an abrupt and long-lasting era of global warming, with a rapid temperature increase of 5 Celsius (C) that endured for roughly 100,000 years, a new study reports. Find out more...

New theory finds 'traffic jams' in jet stream cause abnormal weather patterns

Thu, 24 May 2018 14:16:47 EDT ~ A study offers an explanation for a mysterious and sometimes deadly weather pattern in which the jet stream, the global air currents that circle the Earth, stalls out over a region. Much like highways, the jet stream has a capacity, researchers said, and when it's exceeded, blockages form that are remarkably similar to traffic jams -- and climate forecasters can use the same math to model them both. Find out more...

For the past 70 years, the Danube has almost never frozen over

Thu, 24 May 2018 11:23:11 EDT ~ Since the 1950s, warmer and warmer winters and man-made inflows have largely prevented ice formation on Europe's second-largest river. Find out more...

Giant clams tell the story of past typhoons

Thu, 24 May 2018 10:40:53 EDT ~ A highly precise method to determine past typhoon occurrences from giant clam shells has been developed, with the hope of using this method to predict future cyclone activity. Find out more...

Streams may emit more carbon dioxide in a warmer climate

Wed, 23 May 2018 14:58:39 EDT ~ Streams and rivers could pump carbon dioxide into the air at increasing rates if they continue to warm, potentially compounding the effects of global warming, a new worldwide analysis has shown. Find out more...

Excess nutrients, coupled with climate change, damage the most highly resilient corals

Wed, 23 May 2018 13:32:36 EDT ~ Experimentalists conducted a simulation of future conditions in the Red Sea caused by global warming and acidification, while simultaneously increasing levels of nutrients such as nitrate and phosphate. They found that when nitrate and phosphate were added, the coral thermal resilience was compromised while algal growth benefited from excess CO2 and nutrients. Algal dominance over corals in the reef means losing all of the beauty and biodiversity of the coral reefs. Find out more...

Land rising above the sea 2.4 billion years ago changed planet Earth

Wed, 23 May 2018 13:32:21 EDT ~ Chemical signatures in shale, the Earth's most common sedimentary rock, point to a rapid rise of land above the ocean 2.4 billion years ago that possibly triggered dramatic changes in climate and life. Find out more...

Floridians could far far more frequent, intense Heatwaves

Wed, 23 May 2018 09:12:51 EDT ~ By the late 21st century, if atmospheric greenhouse gas concentrations reach worst-case projections, Floridians could experience summer heatwaves three times more frequently, and each heatwave could last six times longer and be much hotter than at present, according to new research. Find out more...

How high-latitude corals cope with the cold

Tue, 22 May 2018 22:55:45 EDT ~ Corals growing in high-latitude reefs in Western Australia can regulate their internal chemistry to promote growth under cooler temperatures, according to new research. Find out more...