Popular Science articles about Earth & Climate

This is a piece of the GISP2 ice core showing silt and sand embedded in ice.  Soon after this picture was taken, the ice was crushed in the University of Vermont clean lab and the sediment was isolated for analysis.

Five anthropogenic factors that will radically alter northern forests in 50 years

Climate change isn't the only factor influencing forests. A new study by Forest Service scientists and partners describes five anthropogenic factors that will radically alter forest conditions and management needs in the Northern United States.In the most densely forested and most densely populated quadrant of the United States, forests reflect two centuries of human needs, values and practices. Disturbances associated with those needs, such...

Methane climate change risk suggested by proof of redox cycling of humic substances

The recent Yokahama IPCC meeting painted a stark warning on the possible effects of gases such as methane -- which has a greenhouse effect 32 times that of carbon dioxide....

Study provides crucial new information about how the ice ages came about

An international team of scientists has discovered new relationships between deep-sea temperature and ice-volume changes to provide crucial new information about how the ice ages came about.

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Warm US West, cold East: A 4,000-year pattern

University of Utah geochemist Gabe Bowen led a new study, published in <i>Nature Communications</i>, showing that the curvy jet stream pattern that brought mild weather to western North America and intense cold to the eastern states this past winter has become more dominant during the past 4,000 years than it was from 8,000 to 4,000 years ago. The study suggests global warming may aggravate the pattern, meaning such severe winter weather extremes may be worse in the future.Last winter's curvy jet stream pattern brought mild temperatures to western North America and harsh cold to the East. A University of Utah-led study shows that pattern became more pronounced...

Predicting bioavailable cadmium levels in soils

New Zealand's pastoral landscapes are some of the loveliest in the world, but they also contain a hidden threat. Many of the country's pasture soils have become enriched in cadmium....

'Problem wells' source of greenhouse gas at unexpected stage of natural gas production

Researchers used the Purdue Airborne Laboratory for Atmospheric Research, a specially equipped airplane, to measure plumes of methane gas above shale gas wells in southwestern Pennsylvania.High levels of the greenhouse gas methane were found above shale gas wells at a production point not thought to be an important emissions source, according to a study jointly...

Nutrient-rich forests absorb more carbon

The ability of forests to sequester carbon from the atmosphere depends on nutrients available in the forest soils, shows new research from an international team of researchers, including IIASA.

Warming climate has consequences for Michigan's forests

According to an assessment of the effects of a changing climate on Michigan forests led by the U.S. Forest Service, suitable habitat for some species, including the red pine pictured here, is projected to decline across the eastern Upper Peninsula and northern Lower Peninsula by the end of the 21st century.In the last 100 years, Michigan has become warmer, with more rain coming through heavy downpours. Climate models suggest that the state will continue to warm and variability in precipitation...

Study resolves controversy over nitrogen's ocean 'exit strategies'

Princeton University graduate student Andrew Babbin (right) prepares a seawater collection device known as a rosette. The team used samples of seawater to determine how nitrogen is removed from the oceans.A decades-long debate over how nitrogen is removed from the ocean may now be settled by new findings from researchers at Princeton University and their collaborators at the University of...

NASA simulation portrays ozone intrusions from aloft

Outdoor enthusiasts in Colorado's Front Range are occasionally rewarded with remarkable visibility brought about by dry, clear air and wind. But it's what people in the mountainous U.S. West can't...

AGU: More, bigger wildfires burning western US, study shows

A satellite image of the 2011 Las Conchas Fire in New Mexico shows the 150,874 acres burned in magenta and the unburned areas in green. This image was created with data from the Monitoring Trends in Burn Severity (MTBS) Project that the authors of a new study used to measure large wildfires in the western United States.Wildfires across the western United States have been getting bigger and more frequent over the last 30 years -- a trend that could continue as climate change causes temperatures to...

Clean air: Fewer sources for self-cleaning

Up to 1,000 meters above the ground: as part of the EU project PEGASOS, J&#252;lich scientists and their colleagues spent five weeks recording data with the Zeppelin NT in the atmosphere over northern Italy. During their campaign, the researchers identified a previously unknown process that leads to the formation of the trace gas nitrous acid (HONO). Data analysis led to a surprising finding: in contrast to the prevailing assumption, HONO is not an additional source of hydroxyl radicals (OH radicals), which play an important role in the atmosphere's self-cleaning capacity.Up to now, HONO, also known as nitrous acid, was considered one of the most important sources of hydroxyl radicals (OH), which are regarded as the detergent of the atmosphere,...

Study shows lasting effects of drought in rainy eastern US

This spring, more than 40 percent of the western U.S. is in a drought that the USDA deems "severe" or "exceptional." The same was true in 2013. In 2012, drought...

Significant baseline levels of arsenic found in Ohio soils are due to natural processes

This shows arsenic levels in topsoil in Ohio.Geologic and soil processes are to blame for significant baseline levels of arsenic in soil throughout Ohio, according to a study published recently in the Journal of Environmental Quality.

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Researchers propose network-based evaluation tool to assess relief operations feasibility

The degree of blockage of the city's road network and the status of its buildings (which, prior to cleaning efforts, may be used to approximate the degree of blockage of road segments due to debris from buildings beside them) were extracted from OpenStreetMap's data using the Overpass Turbo <a target="_blank" href="http://overpass-turbo.eu">online data mining tool</a>. The red shapes represent damaged or collapsed buildings as mapped by OpenStreetMap's Humanitarian <a target="_blank" href="http://www.hot.openstreetmap.org ">team</a>.The United Nations Office for Disaster Risk Reduction reported that disasters have affected around 2.9 billion people worldwide from 2000-2012- killing more than a million, and damaging around 1.7 trillion...

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Long-term predictions for Miami sea level rise could be available relatively soon

The skyline of downtown Miami along Biscayne Bay: What will it look like in 20, 50, 100 years?Miami could know as early as 2020 how high sea levels will rise into the next century, according to a team of researchers including Florida International University scientist Rene Price.

Puget Sound's rich waters supplied by deep, turbulent canyon

Oceanographers lowered their instrument into the canyon in April 2013. The tool was built to measure fast-moving water close to the seafloor.The headwaters for Puget Sound's famously rich waters lie far below the surface, in a submarine canyon that draws nutrient-rich water up from the deep ocean. New measurements may explain...

Odds that global warming is due to natural factors: Slim to none

An analysis of temperature data since 1500 all but rules out the possibility that global warming in the industrial era is just a natural fluctuation in the earth's climate, according...

Greenland ice cores show industrial record of acid rain, success of US Clean Air Act

This shows ice core drilling at Summit, Greenland, in June 2007.The rise and fall of acid rain is a global experiment whose results are preserved in the geologic record.

AWI researchers decipher climate paradox from the Miocene

Scientists of the Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research (AWI), have deciphered a supposed climate paradox from the Miocene era by means of complex model simulations....

SU geologists prove early Tibetan Plateau was larger than previously thought

This is Syracuse University professor Gregory Hoke.Earth scientists in Syracuse University's College of Arts and Sciences have determined that the Tibetan Plateau -- the world's largest, highest, and flattest plateau -- had a larger initial extent...

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