Articles

Satellite image showing the McKay Creek fire (left) and the Sparks Lake fire (right) on June 20, 2021 in British Columbia, Canada.

2021 Wildfires in the U.S. and Canada

Caitlin Dempsey

Climate change is causing wildfires to burn longer and more frequently in some northern latitudes.

Radar image showing the North American Monsoon over the interior Southwest.

North American Monsoon

Julian Marks

The North American Monsoon is a pattern of increased rainfall that occurs across much of the southwestern USA and northern Mexico, often commencing in July and ending in September. 

A bison cow with her calf. Photo: Jesse Achtenberg, U.S. Fish and Wildlife Service. Public domain

Geography of American Bison

Caitlin Dempsey

Learn about the American Bison, which once roamed North America in large herds.

A pair of old wooden cabins with vegetation growing through and around them.

GIS and Rewilding Efforts

Mark Altaweel

GIS and geographical techniques help identify the best locations for successful rewilding and improve decisions on what to rewild.

A trail through trees.

Geography and Depression Research

Mark Altaweel

Researchers have looked into how spatial understanding might better enlighten us about mental health and despair.

Set of maps illustrating how researchers used deep learning to map trees in West Africa.

Mapping Trees in West Africa

Mark Altaweel

Researchers used high resolution satellite imagery and machine learning to map trees in West Africa.

This image provided by the USGS compares impervious surfaces in Boise, Idaho in 2001, 2008, and 2019.

USGS Releases Two Decades of Land Cover Change for the Contiguous United States

Caitlin Dempsey

The USGS has updated land cover maps for the conterminous United States, which show how the country's landscapes have changed over the last 18 years.

Aerial view of the Shawnee Reservoir in Oklahoma.

Geography of Oklahoma

Marques Hayes

Oklahoma has a diverse geography.

flowchart that summarizes the whole learning guide to become a Web GIS developer

Open-Source Web-GIS Development Roadmap

Geo Contributor

This article will provide a step-by-step learning guide to support your Web-GIS development journey, based on the authors' years of experience and extensive research.

Side by side satellite images showing the water level in Lake Oroville between June 2019 (left) and June 2021 (right).

California’s Drought is Driving Reservoirs to Near Historic Lows in 2021

Caitlin Dempsey

The second year of California's drought is driving down water levels in the state's reservoirs in 2021.

McKinley Lake near Cordova, Alaska

Geography of U.S. Lakes

Elizabeth Borneman

Within its borders, the United States is home to a vast wealth of lakes.

Building under construction.

GIS and Building Safety

Mark Altaweel

Both during the construction phase, and after, building safety can be better modeled and understood using GIS.

Building structure captured beneath tree canopy. Image: VeriDaaS, used with permission.

Next-generation Lidar: Seeing the Forest Through the Trees

Geo Contributor

Next-generation Geiger-mode lidar’s high density and multi-angle looks offer a better chance of seeing through tree foliage to map what's underneath.

Figure 10: Illustration of Urban Heat Line on LST in ArcGIS Pro.

How to Use ArcGIS Pro to Map Urban Heat Islands

Jeff Oppong

This ArcGIS Pro tutorial demonstrates how to assess urban heat in a region.

A USGS elevation benchmark in Bryce Canyon National Park. Photo: Alex Demas, USGS, public domain.

Survey Markers and Benchmarks

Mark Altaweel

Benchmarks are a type of survey markers whose elevations have been surveyed as accurately as possible based on the technology at the time.

Book cover for James Campbell's Talking at the Gates: A Life of James Baldwin

Review | Talking at the Gates: A Life of James Baldwin

G.T. Dempsey

Talking at the Gates by James Campbell is a biography of James Baldwin, one of the most influential American writers of the twentieth century.

Screenshot showing the Esri 2020 Land Cover.

2020 Global Land Use Data

Caitlin Dempsey

A GIS dataset of land cover for the entire world was recently released.

Ocotillo (left) and saguaro (right) are two plants found in the Sonoran Desert. Photo: National Park Service/Alice Wondrak Biel, Saguaro National Park, Public domain.

The Sonoran Desert is Losing Plants Due to Climate Change

Caitlin Dempsey

Between 1984 and 2017, a team of researchers utilized Landsat imagery to examine changes in vegetation in the Colorado Desert in Southern California.

A map of the world with the ocean in blue and the land masses shaded to replicated vegetation for the area. The world is covered in white graticule lines.

Robinson Map Projection

Caitlin Dempsey

The Robinson map projection is a compromise project that minimizes distortion across the map.

Screenshot from a YouTube tutorial on spatial bookmarking.

6 Open Source Powered Projects to Enrich Your GIS Programming Skills

Geo Contributor

This article presents six projects with suggested tools, prerequisites and learning resources that would help you to improve your geospatial programming skills.

This photo from the International Space Station shows the location of Salton Sea between Imperial and Coachella Valleys. Image; NASA, June 12, 2002

California’s Largest Lake

Caitlin Dempsey

Floodwater from a broken irrigation canal gate in 1905 created California's largest lake.

An example of map vandalism where this area of farmland was given a network of non-existent roadwork by a user. Example from OpenStreetMap, CC BY-SA 2.0

Efforts to Combat Map Vandalism in OpenStreetMap Data

Mark Altaweel

Map vandalism is the deliberate wrong change or update to map data, such as adding an incorrect name for a street or place.

Map showing the world's ocean gyres. Source: NOAA.

How Ocean Currents Move Pollution Around the World

Katarina Samurović

How does pollution from plastic, trash, and oil spills move around Earth's oceans?

GDAL logo.

GDAL: Geospatial Data Abstraction Library

Mark Altaweel

The Geospatial Data Abstraction Library (GDAL) is a set of software tools used by GIS platforms such as ArcGIS, QGIS, and GRASS GIS.

Night sky view of the Milky Way rising above the snow-capped peaks of Rocky Mountain National Park, Colorado.

Geography Facts About the Rocky Mountains

Caitlin Dempsey

The Rocky Mountains form the longest mountain range in North America. Here are some geography facts about this mountain range.

Earth observation data cube and its dimensional axes. Figure: Kopp, S., Becker, P., Doshi, A., Wright, D. J., Zhang, K., & Xu, H. (2019). Achieving the full vision of earth observation data cubes. Data, 4(3), 94. CC BY 4.0.

Datacubes in GIS

Mark Altaweel

Increasingly, Earth observation (EO) data are stored as datacubes, helping to assist the analytical process.

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