climate change

Researchers analyzed Landsat satellite imagery between 1993 to 2018 to look at changes in subnival vegetation cover in the Himalayas.

Plant Life is Expanding in the Area around Mount Everest

Caitlin Dempsey

Using satellite imagery, researchers have found that subnival vegetation, the vegetation that grows between the treeline and snowline, is increasing in spatial extent around the Mount Everest and Himalaya area.ย 

Three moments in a tumultuous year for farming north of St. Louis, MO, as seen in NASA-USGS Landsat 8 data. On the left is May 7, 2019, as heavy rains delayed planting for many farms. Sept 12, 2019, in the middle, shows bright green signifying growing vegetation, although with a fair amount of brown, bare fields. On the right, Oct. 14, 2019, the light brown indicates harvested fields while darker brown are fields that have not been seeded or fallow all summer. Credits: NASA

Monitoring Crop Production Via Satellite

Elizabeth Borneman

To cope with ever-changing agricultural needs and conditions, the USDAโ€™s National Agricultural Statistics Service (or NASS) uses data from Landsat to monitor crops in the contiguous United States.

Examples of city climate adaptation action themes. The size of the circle is proportional to the number of actions listed in the 80 city plans analysed, for each of the ten categories, from largest to smallest: physical infrastructure (73 actions); management and planning (62); green infrastructure (57); practice and behaviour (55); technology (52); policy (49); information (45); capacity building (40); warning or observing (22); financing (20). Source: Butt et al., 2018.

Biodiversity and Climate Change Adaptation

Mark Altaweel

Many cities globally are forging ahead with climate change adaptation.

A view of Greenland

The Greenland Ice Sheet Has Lost 3.8 Trillion Tons of Ice

Caitlin Dempsey

A new report analyzed 26 satellite datasets to track ice loss for the Greenland Ice Sheet.

High tide flooding in Port Orchard, Washington, on Jan. 6, 2010. (Ray Garrido, courtesy of Washington Department of Ecology)

Sunny Day Flooding is Increasing

Elizabeth Borneman

Research has shown that the instances of tidal flooding have increased on the Atlantic, Pacific, and Gulf coasts of the United States.

Review | The Citizenโ€™s Guide to Climate Success

G.T. Dempsey

This is a most useful primer on climate change and its consequences.

How Wildfires are Changing Boreal Forests and Increasing Emissions

Katarina Samuroviฤ‡

Boreal forests are changing along with our climate.

Diagram of the fast carbon cycle shows the movement of carbon between land, atmosphere, and oceans.(Diagram adapted from U.S. DOE, Biological and Environmental Research Information System.)

Where Does the Earth Store All Its Carbon?

Katarina Samuroviฤ‡

It is estimated that 1.845 billion billion metric tons of carbon are settled in mantle and crust, while only 43,500 billion tons can be found on the surface.

Looking at Centuries of California’s Climate to Understand Fire Risk

Elizabeth Borneman

Researchers examined moisture patterns and atmospheric wind conditions in California using climate models and centuries of paleoclimate data (from 1571 to 2013).

Arctic Permafrost is Now Releasing More Carbon Than it Stores

Caitlin Dempsey

The researchers found that the Arctic region has transitioned from a carbon sink to a source of carbon emissions. ย 

How New York City is Protecting Its Subway System Against Flooding

Caitlin Dempsey

A flex-gate is a highly flexible covering that can be quickly deployed to protect a subway's entrance and underground structures in the event of a flood.

How Refugia Will Protect Some Animals and Plants from Climate Change

Elizabeth Borneman

Scientists and conservationists are working to find refuge areas in order to further land management plans and climate change predictions.

Comparative maps for modeling flood risk for (a) the Pearl River Delta, China; (b) Bangladesh; (c) Jakarta, Indonesia; and (d) Bangkok, Thailand. Maps: Kulp & Strauss, 2019.

Researchers Estimate Triples the Number of People Affected by Sea Level Rise

Caitlin Dempsey

New estimates from Climate Central estimate that 340 million to 480 million people would be affected by flooding in coastal areas due to sea level rise.

Researchers from NASA's Jet Propulsion Laboratory (JPL) mapped out sources of methane emission across California. Source: NASA/JPL

Mapping Out California’s Methane Emissions

Caitlin Dempsey

With half of the methane emissions originating from human activities, researchers from NASA wanted to map out point-source emitters in California to understand where the highest volume of methane emissions occur.

Fastest Thinning Glacier

Caitlin Dempsey

Hielo Patagรณnico Sur 12 (HPS-12) in Patagonia is believed to be the fastest thinning glacier in the world.

Earliest Published Research Linking Carbon Dioxide with Global Warming

Caitlin Dempsey

163 years ago, Eunice Newton Foote was the first scientist to research the link between increased carbon dioxide and a warmer atmosphere.

How Much Carbon Dioxide are the Oceans Absorbing?

Elizabeth Borneman

New research shows that the world's oceans, which cover 70% of the planet, absorb more carbon dioxide than previously thought.

More Frequent and Intense Tropical Storms Can Change the Geography and Ecology of Coastlines

Elizabeth Borneman

UNC researchers studied North Carolina tropical cyclones over 120 years.

In The Last Three Years Antarctica Lost Ice the Size of Greenland

Elizabeth Borneman

A recent report published by the Proceedings of the National Academy of Sciences analyzed satellite data that showed Antarcticaโ€™s rapid sea ice decline.

Non-diverse tree populations like this orange grove can potentially make drought conditions worse. Photo: Cynthia Mendoza, USDA, Fresno Harlen Ranch in Fresno, CA, 2014, public domain.

New Findings on How Trees Impact Droughts

Katarina Samuroviฤ‡

Recently published research looked at the question of, "Instead of looking at how drought affects the forest, how might this go the other way around?"

Greenlandโ€™s Ice Arch Crumbles Earlier Than Normal

Katarina Samuroviฤ‡

Across the Nares Strait, between Greenland and Ellesmere Island, lies a horizontal ice arch.

Map of the United States showing tree cover change in urban/community areas by state. Map: Nowak & Greenfield, 2018.

The U.S. is Losing 36 Million Trees Per Year

Caitlin Dempsey

A study from the US Forest Service has found that, nationally, tree cover is declining at a rate of 175,000 acres per year which is the equivalent of about 36 million trees lost each year.

Mapping Where Planting Trees Can Help with Climate Change Mitigation

Mark Altaweel

Researchers have mapped out where to plant trees to mitigate climate change.

Normalized difference vegetation index satellite images of the state before and during the drought. | Image courtesy Chunyu Dong/UCLA.

Climate Change is Intensifying Drought in Southern California

Caitlin Dempsey

Researchers from UCLA and Columbia University discovered that the 2012โ€“16 drought impacted Southern California more severely than northern regions.

The Arctic Permafrost is Thawing and It’s Causing Thousands of Landslides

Caitlin Dempsey

Using Banks Island, Canada as a study area, researchers analyzed trends in permafrost thaw and associated landslides.

Help Map Out Australia’s Dead Trees

Caitlin Dempsey

By using a GPS-enabled smartphone, volunteers can capture imagery of tree health around Australia to help researchers map out where trees are dying in Australia.