climate change

Map showing the NDVI anomaly in 2024 compared to average levels from 1991 to 2020). After a couple of years of above average precipitation in Southern California, vegetations levels in the summer of 2024 were 30% greener than average. Map: NASA, public domain.

Hydroclimate Whiplash: the Impact on California Wildfires

Caitlin Dempsey

Hydroclimate whiplash - the rapid swing between drought and heavy precipitation - plays a role in the increasing intensity of California wildfires.

Taken at about 30,000 feet (9 kilometers) over eastern Washington, the smoke plume (gray) feeds the pyrocumulonimbus cloud (white). Photo: David Peterson (U.S. Naval Research Laboratory), public domain, August 8, 2019.

Understanding the Increase in PyroCbs: Wildfire Thunderstorms

Caitlin Dempsey

Wildfire-driven thunderstorms, known as pyroCbs (pyrocumulonimbus clouds), are becoming more frequent.

Using Seals to Track Ocean Currents

Caitlin Dempsey

By tagging seals with specialized sensors, researchers can map Antarctic ocean currents, heat distribution, and assess the health of marine ecosystems.

A giant sequoia tree at Yosemite National Park's Mariposa Grove of Big Trees.

Geography of Giant Sequoias

Elizabeth Borneman

Giant sequoias are one of the longest lived tree species, with the oldest giant sequoia living an estimated 3,400 years.

A lizard clinging upright on a steep rock with dried grass behind it.

Urbanization is Shortening the Legs of Western Fence Lizards

Caitlin Dempsey

Western fence lizards have adapted to manmade surfaces in urban areas by developing shorter limbs and toes.

The color of water is a by product of how light is absorbed. Mangrove islands bespeckle the bay in upper Lostman's River. Photo: Paul Nelson, U.S. Geological Survey. Public domain.

How Mapping Mangrove Species Can Help With Coastal Erosion Mitigation

Mark Altaweel

Species-specific mangrove maps aid conservation by targeting protection efforts and resources against storm surges and coastal erosion.

A view across forest covered mountains with a band of fog stretching just below the peak of the far mountain.

Will Cool Air Pooling Protect Some Forests from Climate Change?

Caitlin Dempsey

Researchers looked at the link between cool air pooling and cold-adapted forest composition.

A Monarch butterfly on a milkweed plant.

Overwintering Monarch Butterfly Populations

Caitlin Dempsey

The latest counts of overwintering monarch butterflies in California and Mexico.

A seabird with wings outstretched flying out from the ocean with water splashing around the bird.

Individual Seabird Adaption to Climate Change

Mark Altaweel

Scientists tracked the migratory patterns of 145 seabirds to map how individual shearwaters are adapting to climate change.

Black and white graph showing the change in global temperatures against the average from 1951 to 1980.

When Will We Reach the 1.5°C Mark with Climate Change?

Mark Altaweel

The Earth is 1°C warmer than pre-industrial times, and it's unclear when we'll reach the 1.5°C climate threshold.

A diagram showing the formation of internal waves underneath the surface of the water.

The Role of Internal Waves in Climate Change

Mark Altaweel

Scientists from the UK and US have identified underwater internal waves as crucial in understanding and addressing climate change.

Southern California neighborhood scarred by wildfire. Photo: Jon Keeley, USGS Western Ecological Research Center. Public domain.

Study: More U.S. Homes Burn in Grassland and Shrubland Fires than Forest Wildfires

Caitlin Dempsey

A new study in Science reports that in the United States, grassland and shrubland fires tend to be more extensive and burn more houses than forest fires.

A flooded street with buildings in the background.

Rising Sea Levels and Human Migration

Mark Altaweel

Researchers predict that by 2100 between 17 to 72 million people will migrate as a result of coastal land loss due to sea level rise.

A satellite image of a section of the ocean showing swirling colors of blues and greens.

Climate Change is Affecting the Color of the Ocean

Caitlin Dempsey

Researchers are using satellite data to analyzing the levels of phytoplankton in the oceans which are being affected by climate change.

A visualized view of the Earth looking at the Arctic in 2023.

Using Satellites to Map Arctic Amplification

Caitlin Dempsey

Scientists are using remotely sensed data from Earth observation satellites to map and study Arctic amplification.

A blackbird feeding nestlings in a nest built on top of a rusty rake. A red wooden wall is in the background and a white downspout helps to support the nest.

Timing Mismatch is Resulting in Fewer Birds

Caitlin Dempsey

A study has found that shifts in the timing of spring seasons, linked to climate change, are impacting bird breeding patterns and leading to less offspring.

Side by side comparison of black and white photo from 1899 showing glaciers and a color photo from 2003 showing a bay with water.

When Did the Anthropocene Begin?

Mark Altaweel

The Anthropocene is a proposed geological epoch defined by the significant influence of human activity on Earth's ecosystems and geology.

A gray shaded relief map of California showing in shades of green where climate mismatched forests are in the Sierra Nevada.

Zombie Forests in the Sierra Nevada

Katarina Samurović

Climate change is creating a vegetation climate mismatch in the conifer forests of California's Sierra Nevada.

Coastal wetlands at Parker River National Wildlife Refuge in Massachusetts. Photo: Kelly Fike/USFWS

Blue Carbon Explained

Caitlin Dempsey

Blue carbon is the carbon captured and stored by the world's oceanic and coastal ecosystems.

A picture of a brown turtle with its head raised sitting in shallow water surrounded by mud and plant stems.

Wildlife Conservation in the Face of Climate Change: The Importance of Protected Areas

Mark Altaweel

Protected areas are important for providing refuge to amphibians and reptiles impacted by climate change.

A dry river bed during a drought.

Changes to the Global Water Cycle

Mark Altaweel

Researchers are using Earth observation satellites to track changes to the global water cycle.

Low lying clouds over a forest.

Study: Afforestation Can Lead to More Cloud Cover

Caitlin Dempsey

Increased forest cover can lead to more low lying clouds which helps to cool the Earth.

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.)

Understanding How Carbon Storage Can Help Meet Climate Goals

Mark Altaweel

The storage of carbon is a critical part of rebalancing the carbon cycle to ensure that climate change is less severe than many predict.

Image showing the change in the jet stream over the western U.S. during El Niño.

How El Niño and La Niña Affect Rain in the United States

Julian Marks

El Niño and La Niña are weather patterns that frequently have a considerable impact on the western and southwestern United States.

Cover of Michael Hannah's book "Extinctions:  Living and Dying in the Margin of Error".

Review | Extinctions: Living and Dying in the Margin of Error

G.T. Dempsey

This book sets out, in some nine chapters, both the ‘turbulent’ journey of that one species living 3.7 billion years ago to the 8.7 million today and the human activity threatening that biodiversity.

Hurricane Ida just before landfall on the Louisiana coast on Aug. 29, 2021. NOAA.

4 Things to Learn About Hurricane Ida

Geo Contributor

These four resources explain why the New Orleans area is at high risk for severe hurricanes and what role climate change plays in these devastating storms.

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