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Ancient Maya canals and fields show early and extensive impacts on tropical forests

Science Daily: Climate News - Mon, 10/07/2019 - 22:34
New evidence in Belize shows the ancient Maya responded to population and environmental pressures by creating massive agricultural features in wetlands, potentially increasing atmospheric CO2 and methane through burn events and farming, according to geographical research.

Early humans evolved in ecosystems unlike any found today

Science Daily: Climate News - Mon, 10/07/2019 - 22:34
To understand the environmental pressures that shaped human evolution, scientists must reconstruct the ecosystems in which they lived. Because putting together the puzzle of millions-of-years-old ecosystems is a difficult task, many studies draw analogies with present-day African ecosystems, such as the Serengeti. A new study calls into question such approaches and suggests that the vast majority of human evolution occurred in ecosystems unlike any found today.

New method gives first global picture of mutual predictability of atmosphere and ocean

Science Daily: Climate News - Mon, 10/07/2019 - 18:58
Scientists have carried out a novel statistical analysis to determine for the first time a global picture of how the ocean helps predict the low-level atmosphere and vice versa. They observed ubiquitous influence of the ocean on the atmosphere in the extratropics, which has been difficult to demonstrate with dynamic models of atmospheric and oceanic circulation.

Early breeding season for some Arctic seabirds due global warming

Science Daily: Climate News - Mon, 10/07/2019 - 18:33
The breeding season of some seabirds in Arctic regions takes place earlier as a result of the temperature rise caused by climate change, according to a new article.

Pressure may be key to fighting climate change with thermoelectric generators

Science Daily: Climate News - Mon, 10/07/2019 - 18:33
Pressure improves the ability of materials to turn heat into electricity and could potentially be used to create clean generators, according to new work.

Another casualty of climate change? Recreational fishing

Science Daily: Climate News - Mon, 10/07/2019 - 17:36
Another casualty of climate change will likely be shoreline recreational fishing, according to new research. The study finds some regions of the U.S. may benefit from increasing temperatures, but those benefits will be more than offset by declines in fishing elsewhere.

Disappearing Peruvian glaciers

Science Daily: Climate News - Mon, 10/07/2019 - 17:04
It is common knowledge that glaciers are melting in most areas across the globe. The speed at which tropical glaciers in the Peruvian Andes are retreating is particularly alarming, however. In the first detailed investigation of all Peruvian mountain ranges, a research team has ascertained a drastic reduction of almost 30 percent in the area covered by glaciers between 2000 and 2016.

The last mammoths died on a remote island

Science Daily: Climate News - Mon, 10/07/2019 - 15:17
Isolation, extreme weather, and the possible arrival of humans may have killed off the holocene herbivores just 4,000 years ago.

This dataset changed 2019-10-05T14:45:54Z

Coastwatch - Sat, 10/05/2019 - 18:55
Previously, this dataset was (temporarily?) not available. Perhaps ERDDAP was just restarted.

Dust in ice cores leads to new knowledge on the advancement of the ice before the ice age

Science Daily: Climate News - Fri, 10/04/2019 - 17:56
Working with the ice core ReCap, drilled close to the coast in East Greenland, researchers wondered why the dust particles from the interglacial period -- the warmer period of time between the ice ages -- were several times bigger than the dust particles from the ice age. The research led to the invention of a method able to map the advancement of the glaciers in cold periods and the melting in warmer periods.

Sinking groundwater levels threaten the vitality of riverine ecosystems

Science Daily: Climate News - Fri, 10/04/2019 - 17:56
Groundwater is the world's largest source of freshwater and it is of vital importance for food production. Increasing extraction of groundwater in recent decades has resulted in sinking water tables worldwide. A study by a hydrologist shows that almost 20 percent of the catchments areas where groundwater is pumped suffer from a flow that is too low to sustain freshwater ecosystems. This number is expected to increase to 50 percent by 2050.

How to make carbon pricing palatable to air travelers

Science Daily: Climate News - Thu, 10/03/2019 - 20:31
Travellers are willing to pay a little more for flights if they know the extra money will be used to address carbon emissions, a new study has found.

Managed forests in New Hampshire rich in carbon

Science Daily: Climate News - Thu, 10/03/2019 - 20:03
A new study examining carbon stocks in an actively managed mixed wood forest in New Hampshire finds that places with more trees have more carbon stored in both the trees and the soil. The findings demonstrate the connection between above ground and below ground carbon, which has implications for forest management strategies.

Laser precision: NASA flights, satellite align over sea ice

Science Daily: Climate News - Thu, 10/03/2019 - 18:40
The skies were clear, the winds were low, and the lasers aligned. In April, instruments aboard NASA's Operation IceBridge airborne campaign and the Ice, Cloud and Land Elevation Satellite-2 succeeded in measuring the same Arctic sea ice at the same time, a tricky feat given the shifting sea ice.

Northern forests have lost crucial cold, snowy conditions

Science Daily: Climate News - Thu, 10/03/2019 - 18:40
Winter conditions are changing more rapidly than any other season and researchers have found clear signs of a decline in frost days, snow covered days and other indicators of winter that could have lasting impacts on ecosystems, water supplies, the economy, tourism and human health.

A tool to understand how ecosystems are responding to a changing climate

Science Daily: Climate News - Thu, 10/03/2019 - 14:48
As climate change accelerates, recording shifts in plant flowering times is critical to understanding how changes in climate will impact ecosystem interactions. To help measure these shifts, researchers have introduced a new quantitative measure of phenological status, called the 'phenological index,' that improves scoring of developmental stage in herbarium specimens, and predicts a higher degree of phenological advancement in response to climate change.

Besides hot water, coral bleaching also about location, location, location

Science Daily: Climate News - Wed, 10/02/2019 - 23:52
A new study revealed a more complex view than current standard predictions of coral bleaching events caused primarily by heat stress; rather, the scientists found that bleaching is driven by a variety of stressors, and each region responds differently.

Seagrass meadows harbor wildlife for centuries, highlighting need for conservation

Science Daily: Climate News - Wed, 10/02/2019 - 21:53
Seagrass meadows put down deep roots, persisting in the same spot for hundreds and possibly thousands of years, a new study shows. Researchers used modern and fossil shells from seagrass-dwelling animals to estimate the age of these meadows, showing that, far from being transient patches of underwater weeds, they are remarkably stable over time.

An India-Pakistan nuclear war could kill millions, threaten global starvation

Science Daily: Climate News - Wed, 10/02/2019 - 21:42
A nuclear war between India and Pakistan could, over the span of less than a week, kill 50-125 million people -- more than the death toll during all six years of World War II, according to new research.

Increasing precipitation extremes driving tree growth reductions across Southwest

Science Daily: Climate News - Wed, 10/02/2019 - 21:42
As the Earth's temperature warms, its hydrological cycle kicks into overdrive - wet years get wetter, and dry years get drier. According to a new study, these increased rainfall extremes could have dire consequences for the semi-arid forests of the western U.S.


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