Physical Geography

Physical geography focuses on geography as an Earth science (and is sometimes called Earth System Science).

Physical geography is a branch of geography that focuses on the study of the natural features and processes of the Earth’s surface. It includes the examination of landforms, climate, vegetation, soils, and water resources. Physical geographers use a range of scientific methods and tools to analyze and understand the complex interactions between the Earth’s physical systems.

Learn about the different branches of geography that fall under the physical geography category: climatology, geomorphology, biogeography, and more.

Photo taken at an oblique angle from the International Space Station showing Sutter Buttes.

The World’s Smallest Mountain Range

Caitlin Dempsey

Surrounded by flat farmland, the Sutter Buttes are an isolated volcanic landform often described as the world's smallest mountain range.

A grayscale map of the world with graduated symbols representing in pink observe bird extinctions, blue for fossils records, and orange for undiscovered bird extinctions.

Human-Driven Extinction of Birds

Mark Altaweel

Researchers using models and historical records estimate that up to 11% of all bird species have gone extinct since the Late Pleistocene.

A map showing in orange the range of steller's jay and in blue the range of blue jay over a gray shaded relief map of the United States.

This Bird is Not the Only Crested Jay West of the Rocky Mountains

Caitlin Dempsey

Since the 1960s, blue jays have steadily expanded their range beyond the Rocky Mountains into western North America.

A weather model with a yellow to greens color gradient showing wind speed.

Weather Forecasting Using Artificial Intelligence

Mark Altaweel

GraphCast is a Google DeepMind effort that uses deep learning to improve medium-range weather forecasting.

Maps showing age of forest stands (left) and estimate tree canopy heights (right).

Measuring Tree Height with a Pair of Satellites

Caitlin Dempsey

Using synthetic aperture radar (SAR) data from two satellites, researchers developed a method for estimating tree canopy height.

Two maps - the top has a deep blue to deep red raster temperature layer for an area in South Africa and the bottom has deep blue to deep red dots to represent individual elephant locations with temperature sensors.

Using Animals to Collect Weather Data

Caitlin Dempsey

Attaching sensors to wildlife could give scientists fine-scale weather data from the habitats animals move through.

A salt marsh pond in Plum Island, MA (on the left), alongside a tidal creek (on the right).

How Sea Level Rise Will Affect Salt Marshes

Mark Altaweel

Researchers have calculated that about 90 percent of salt marshes are under threat from rising sea levels predicted to occur by the year 2100.

A shaded relief map with green overlay showing the historic range of the American Chestnut.

American Chestnut: the Struggle to Save the ‘Redwood of the East’

Katarina Samurović

Scientists and conservationists are working to rescue the American Chestnut from going completely extinct.

A view of a surge flow on a creek with sand dunes and mountains in the background.

Surge Flows: A Rare River Phenomenon

Caitlin Dempsey

Surge flows are a rare phenomenon where shallow waters, sand or sediment, and steep topography combine to create waves in rivers.

Three side-by-side satellite images showing the emergence of an ephemeral lake in Badwater Basin.

North America’s Lowest Point on Land is Currently a Lake

Caitlin Dempsey

Two recent heavy rainfall events have filled Badwater Basin, the lowest point in North America on land, up with water.

A dark photo taken at night showing lightning and a purple sky around the lightning.

Geography of Lightning Strikes in the United States

Caitlin Dempsey

Researchers recently mapped out data from the U.S. National Lightning Detection Network (NLDN) between 2017 and 2022 to see where lightning strikes the most across the contiguous United States.

A silhouette of an ibex at sunset with the horns showing.

Why Climate Change is Making Some Animals More Nocturnal

Caitlin Dempsey

As daytime temperatures rise, some animals are becoming more active at night to avoid heat stress.

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.

Satellite imagery of an atoll.

Geography of Atolls

Caitlin Dempsey

Atolls are ring-shaped coral reefs, islands, or a series of islets that encircle a lagoon either partially or completely.

A view of tall eucalyptus trees in a forest.

The Role of Secondary Forests in Reducing Atmospheric Carbon

Mark Altaweel

Secondary forests play an important role in carbon capture strategies aimed towards reducing atmospheric carbon.

Photo of a mountain lion walking on a rock.

Using GIS to Map an Individual Animal’s Home Range

Caitlin Dempsey

GIS can be used to model animal home ranges using location data collected through radio telemetry and GPS tracking.

A map showing moisture levels carried by an atmospheric river over the West Coast including California. High moisture levels are a dark blue-green and low moisture levels are brown.

What is the Outlook for California’s Atmospheric Rivers?

Caitlin Dempsey

During the winter months, atmospheric rivers carry enormous amounts of water to the state of California.

A view of a green covered mountain with misty clouds in the foreground.

What is England’s Highest Mountain?

Caitlin Dempsey

Found at 978 metres (3,209 ft) above sea level, Scafell Pike is located in Lake District National Park in Cumbria.  

A raft of sea otters. Photo: USFWS, public domain

Sea Otters are a Keystone Species

Caitlin Dempsey

Keystone species are plants or animals, like the sea otter, whose presence in an ecosystem plays a crucial role in its health.

A grayscale shaded relief map of the western part of Canada with red areas on top showing glaciers.

Mapping Glacier Loss in Western Canada

Caitlin Dempsey

Researchers are using remotely sensed data and satellite imagery to map glacier loss in Western Canada.

An oblique view of Hawaii showing two snow-capped volcanoes.

Snow in Hawaii

Caitlin Dempsey

Hawaii may be in the tropics, but it gets snow every year.

A shaded relief map centered on Antarctica with different colored circles for the different types of penguin nesting sites.

Geography of Penguins

Caitlin Dempsey

Discover where penguins live, from Antarctic sea ice to tropical islands, and what shapes their geographic distribution.

A natural shaded relief map of Antarctica showing in a bold line the 60° S extent of the Southern Ocean.

Geography Facts About the Southern Ocean

Caitlin Dempsey

The Southern Ocean is the Earth's windiest, southernmost ocean and plays a vital role in Earth's environmental health.

Double rainbow seen from Lower Mammoth in Yellowstone National Park. Photo: Dan Hottle/NPS, public domain.

Exploring Rainbows and Moonbows

Caitlin Dempsey

Rainbows and moonbows occur when light is refracted through drops of water in the sky.

An AI generated closeup of a red, orange, and yellow fall leaves with a dusting of snow.

What is Snowliage?

Caitlin Dempsey

Snowliage is when an early winter storm creates a bright white snowfall that contrasts with the red, oranges, and yellow fall foliage of trees.

Graph with lines in 1,000 foot intervals with a mountain graphic and labels corresponding to the heights of the five tallest mountains in the United States.

The Highest 11 Mountains in the United States

Elizabeth Borneman

Learn about the highest 11 mountains in the United States.

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