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You are browsing the archive for global warming Archives - AGU Blogosphere.

18 May 2020

How climate killed corals

New study shows multiple factors joined forces to devastate the Great Barrier Reef in 2016.

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6 May 2020

Going against the trend

Global warming has affected the entire planet’s surface, except for one particular area of the ocean, which until 2015 had bucked the trend. A research team has now unraveled what was going on.

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21 April 2020

South Asia faces increased double-threat of extreme heat, extreme pollution

Extreme heat occurrences worldwide have increased in recent decades, and at the same time, many cities are facing severe air pollution problems, featuring episodes of high particulate matter pollution. This study provides an integrated assessment of human exposure to rare days of both extreme heat and high PM levels.

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8 April 2020

Shelf sediments, freshwater runoff from rivers brings more carbon, nutrients to North Pole

Freshwater runoff from rivers and continental shelf sediments are bringing significant quantities of carbon and trace elements into parts of the Arctic Ocean via the Transpolar Drift—a major surface current that moves water from Siberia across the North Pole to the North Atlantic Ocean.

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11 March 2020

Small climate change effects can be the most obvious

Researchers looked at how climate change has already changed temperatures and rainfall patterns worldwide to the point that they would be unfamiliar to people living at the end of the 19th century. Crucially, they then examined how these changes compared with climate fluctuations already experienced in different regions of the globe.

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10 March 2020

Major Greenland glacier collapse 90 years ago linked to climate change

Ninety years ago there were no satellites to detect changes in Greenland’s coastal glaciers, but a new study combining historical photos with evidence from ocean sediments suggests climate change was already at work in the 1930s and led to a major collapse of the one of Greenland’s largest coastal glaciers.

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11 November 2019

Advancing spring warmth could disrupt species migration, development

In a new study in the AGU journal Geophysical Research Letters, scientists found that in many areas of the U.S. springtime temperature thresholds important for plant and animal life cycles occur between six to 20 days earlier in the season than they did 70 years ago.

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29 August 2019

Researchers find new ways for coral reef ecosystems to grow

Particulate organic matter from the open ocean has a bigger-than-expected role in the growth and health of coral reefs, say researchers studying declining coral reefs in Hawaii.

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26 August 2019

Climate change is altering winter precipitation across the Northern Hemisphere

A team of scientists has successfully teased out the influence of human-caused climate change on wintertime precipitation over much of the last century, showing that the warming climate is significantly altering wintertime rainfall and snowfall across the Northern Hemisphere.

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7 August 2019

Drawing Down in Pennsylvania – a mini-podcast series showcasing local efforts to reverse global warming

A summer science communication REU that produced a mini-podcast series exploring efforts and successes in the state of Pennsylvania to reverse global warming, aligning with the mission of Project Drawdown

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5 August 2019

Introducing students to Drawdown actions and solutions

Project Drawdown helps students see beyond the “doom and gloom” with climate change impacts and shows them how to take actions that move us towards reversing global warming

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31 July 2019

Decades-old pollutants melting out of Himalayan glaciers

New research in AGU’s Journal of Geophysical Research: Atmospheres finds chemicals used in pesticides that have been accumulating in glaciers and ice sheets around the world since the 1940s are being released as Himalayan glaciers melt as a result of climate change.

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25 July 2019

Melting ice may change shape of Arctic river deltas

Thawing ice cover and easily erodible permafrost may destabilize Arctic river deltas, according to new research. A new study in the AGU journal Geophysical Research Letters finds sea ice and permafrost both act to stabilize channels on Arctic river deltas.

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27 June 2019

Study finds increased moisture facilitated decline in African fires in Africa

The amount of area burned across Africa declined by 18.5 percent between 2002 and 2016, according to a new study.

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26 June 2019

Climate change is transforming northernmost Arctic landscapes

Isachsen, a permafrost monitoring site that sits at a latitude of 78 degrees north on the Arctic Canadian island of Ellef Ringnes, seemed like the last place that would feel the effects of climate change.

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24 June 2019

Atmospheric rivers getting warmer along U.S. West Coast

Most of the West Coast of the United States relies on a healthy winter snowpack to provide water through the dry summer months. But when precipitation falls as rain rather than snow, it can diminish summer water supplies, as well as trigger floods and landslides. A new study in AGU’s Journal of Geophysical Research: Atmospheres finds atmospheric rivers –plumes of moisture that deliver much of the west’s precipitation—have gotten warmer over the past 36 years.

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5 June 2019

Feeling Heat on the Roof of the World

The Tibetan Plateau, also known as the “roof of the world,” is getting hotter. This process is especially fast in places marked by retreating snow, according to new research.

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3 June 2019

Loss of Arctic sea ice stokes summer heat waves in southern U.S.

Over the last 40 years, Arctic sea ice thickness, extent and volume have declined dramatically. Now, a new study finds a link between declining sea ice coverage in parts of the Canadian Arctic and an increasing incidence of summer heat waves across the southern United States.

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23 May 2019

New Studies Increase Confidence in NASA’s Measure of Earth’s Temperature

A new assessment of NASA’s record of global temperatures revealed that the agency’s estimate of Earth’s long-term temperature rise in recent decades is accurate to within less than a tenth of a degree Fahrenheit, providing evidence that past and future research is correctly capturing rising surface temperatures.

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16 May 2019

Earthquake in 2009 intensified American Samoa’s rising sea levels

The 2009, magnitude-8.1 Samoa earthquake dealt a great deal of damage to the Samoan Islands: Tsunami waves as high as 14 meters (46 feet) wiped out multiple villages, claiming nearly 200 lives and severely damaging water and electrical systems.  New research reveals the damage is likely to continue in the island Tutuila, also known as American Samoa.

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