Climate

climate

Charting 500 years of Mississippi floods

The Mississippi River is notorious for flooding its muddy banks, with many critical areas actively managed by the Army Corps of Engineers to control flooding. But despite all the controls, major floods still occur. 

01 Aug 2018

Comment: The changing shape of local climates

Climate is changing globally, but how will it be experienced locally? Researchers are developing the techniques needed to understand and predict the local consequences of global change.

02 Jul 2018

Did a massive eruption spur Christianity in Iceland?

The landscape and culture of Iceland, more so than any other country, have been shaped by volcanism. In a new study, researchers have refined the dates for the massive 10th-century Eldgjá eruption, which occurred just a few decades after the island was first settled. The findings may support a connection between the violent volcanism depicted in Iceland’s most celebrated medieval poem and the island’s conversion from paganism to Christianity.

29 Jun 2018

When more humidity means less water

Scientists have long assumed that temperature is the main control on melting of winter snowpacks across the mountainous western United States. In a recent study, however, scientists suggest that regional humidity may have a larger impact than temperature.

16 May 2018

Double-dip La Nina blamed for Colorado's dry winter

In January 2017, skiers at Wolf Creek Ski Area in southern Colorado were enjoying a base snow depth of more than 350 centimeters — enough snow to cover most rocks and other obstacles. But this year, as of mid-January, the runs were much sparser, with the base barely clearing 100 centimeters. Powderhorn Resort in western Colorado was so bereft of snow that it had yet to open in mid-January — a month behind their usual December opening. Statewide the snowpack is slim enough to worry not only skiers, but also the state’s climatologists and water resource managers, who held a Water Availability Task Force (WATF) meeting on Jan. 18 to discuss the state’s snowpack and water outlook.

06 Feb 2018

Dividing line: The past, present and future of the 100th Meridian

In 1878, John Wesley Powell first advanced the idea that the climatic boundary between the United States’ humid East and arid West lay along the 100th meridian, which
runs from pole to pole and, today, cuts through six U.S. states. But what does it really mean, and what is its future?
22 Jan 2018

Less-developed countries with high climate risk need better access to weather and climate data

Rising seas, more persistent droughts and more frequent severe weather events are predicted to occur in the coming decades as the planet continues warming. In a new study, researchers who analyzed spending internationally on weather and climate information services (WCIS) suggest that access to reliable WCIS is becoming more vital for communities and governments looking to assess their vulnerability and to safeguard people and property amid changing climates.

22 Sep 2017

End of ice age may have been too wet for megafauna

Between 15,000 and 11,000 years ago, dozens of ice-age megafauna species went extinct. Various causes, from climate-driven habitat changes to overhunting to extraterrestrial impacts, have been cited for these extinctions. But new research looking at fossils of large herbivores such as bison, horses and llama supports the idea that a worldwide uptick in moisture was a main driver of the extinction trend.

08 Sep 2017

Transylvanian ice cave reveals European winter climate record

Over the last 10,000 years, water dripping into a cave in Transylvania has frozen into one of the largest and oldest cave glaciers in the world. Today, the Scărișoara Ice Cave in central Romania preserves one of the longest ice records on Earth, a boon for climate researchers seeking to study how Europe’s climate has fluctuated during the Holocene.

23 Aug 2017

Evidence of devastating drought found beneath the Dead Sea

The Dead Sea, a landlocked lake bordered by Israel, Jordan and Palestine, is nearly 10 times saltier than the ocean. And it’s getting saltier. Since the beginning of the 20th century, the water level has dropped by nearly 30 meters, largely because of diversions of the Jordan River, the lake’s primary tributary and the arid region’s main source of fresh water.

31 Jul 2017

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