Articles

View of Lake Tahoe from Emerald Bay. Photo: NASA/JPL.

Largest Alpine Lake in North America

Caitlin Dempsey

Located in the Sierra Nevada mountain range, Lake Tahoe is a freshwater lake that straddles the border between California and Nevada.

Photo showing golf ball and baseball sized hail.

Geography of Hailstorms in the United States

Caitlin Dempsey

While hail can form anywhere in the United States experiencing a thunderstorm, geography influences where hailstorms are more likely to occur.

Fujiwhara effect in 2017 showing Hurricanes Irwin and Hillary colliding in the Pacific Ocean.

Fujiwhara Effect: When One Storm Absorbs Another

Caitlin Dempsey

When two storms move towards another, an uncommon phenomenon called the Fujiwhara Effect can happen.

Book cover for "Lure of the Beach"

Review | Lure of the Beach: A Global History

G.T. Dempsey

Robert C. Ritchie guides readers through a comprehensive history of mankind’s love affair with the beach.

OpenStreetMap relies on contributions from thousands of volunteers to contribute and edit GIS data. Screenshot taken 10-Feb-2021.

OpenStreetMap: One of the World’s Largest Collaborative Geospatial Projects

Mark Altaweel

OpenStreetMap is a community project with the goal of mapping the world using a crowdsourcing, collaborative method.

Colorado Plateau. Photo: USGS. Public domain.

Plateaus in Geography

Caitlin Dempsey

A plateau is a flat section of land that is sharply raised in contrast to the surrounding landscape on at least one side.

Image of central Melbourne in 2016. Photo: the International Space Station.

These Cities are the Most Unaffordable Places to Buy a House in the World

Caitlin Dempsey

Urban Reform Institute and Frontier Centre for Public Policy evaluated housing markets for 92 metropolitan areas in eight countries to see how affordable they area.

A section of Rwanda showing previously unmapped (yellow dots) schools. Source: Development Seed.

Mapping Schools with Artificial Intelligence

Mark Altaweel

Researchers are using AI to map schools in countries where many schools are undocumented so as to connect children with schools.

Map of drought conditions in the United States on March 23, 2021.

Half of the United States Will Continue to be Affected by Drought for Spring 2021

Caitlin Dempsey

Drought conditions in much of the United States are forecasted to continue for spring 2021.

LST map of Connecticut, USA (Landsat 7).

How to Use ArcGIS Pro to Calculate Land Surface Temperature (LST) from Landsat Imagery

Jeff Oppong

This ArcGIS Pro tutorial utilizes spatial data science and remote sensing techniques to calculate land surface temperatures using Landsat imagery.

A sign marking the location of the North American Continental Divide in Yellowstone National Park. Photo: NPS, public domain.

North American Continental Divide

Elizabeth Borneman

The North American Continental Divide separates the watersheds that flow into the Pacific Ocean and those that flow into the Gulf of Mexico and the Atlantic, Caribbean, and Arctic Oceans.

Picture with half of the earth, two satellites, and the Google Earth Engine text logo.

A Look at Google Earth Engine

Mark Altaweel

In a MapScaping podcast episode, Quisheng Wu discusses Google Earth Engine how it allows users to share and upload their own geospatial analyses.

A father and daughter look out at the Pacific Ocean.

How Much Would the Ocean Rise if Everyone Sat in it?

Geo Contributor

If everyone in the world decided to sit in the ocean all at once, how much would the sea level rise?

Construction of the New Suez Canal. Satellite images of before and after: August 6, 2014 and April 5, 2016. Images: Landsat 8.

View From Space: Stuck in the Suez Canal

Caitlin Dempsey

Satellites have captured imagery of the Ever Given which is currently stuck in the Suez Canal.

A look at the detail on the 1801 Kent Map from the Ordnance Survey.

What Was the First Map Issued by the Ordnance Survey?

Caitlin Dempsey

The first Ordnance Survey map was issued in 1801.

Fans watching a game at AT&T Park. Photo: Gryffyd Dempsey.

How San Francisco’s Geography and Microclimate Affect Baseball

Marques Hayes

San Francisco's geography shaped the microclimates that affected baseball at Candlestick Park.

Figure 11: Landslide susceptibility map of Greater Accra, Ghana

How to Use ArcGIS Pro to Assess Landslide Susceptibility

Jeff Oppong

This tutorial explains how landslide susceptibility can be assessed using ArcGIS Pro.

Geography of Clouds

Caitlin Dempsey

A brief look at the geography of clouds.

Astronaut photograph ISS063-E-104178 of Ol Doinyo Lengai was acquired on October 6, 2020

The Earth’s Only Active Volcano Known to Emit Natrocarbonatites

Caitlin Dempsey

Only one active volcano in the world is known to emit natrocarbonatite.

Goes-16 Pseudo-natural Color Image of Hurricane Michael at 1730 UTC 10 October 2018. Image: NOAA/NESDIS

2020 Hurricane Season

Caitlin Dempsey

Each year, the World Meteorological Organization creates a list of official names for major storms in the both Northern Pacific and Atlantic oceans.

Screenshot from the GEOACE Item Report Dashboard.

Using ArcGIS Online to Manage Content

Geo Contributor

With the Item Report Dashboard from GEOACE, you can use out-of-the-box tools in ArcGIS Online to manage content within an organization.

Cicada on a wooden post. Cicadas (Cicadidae, Magicicada) are 13- and 17- year periodical cicadas of North America. Photo: John J. Mosesso, USGS. Public domain.

Billions of Cicadas Will Be Emerging In the United States

Geo Contributor

Starting sometime in April or May, depending on latitude, one of the largest broods of 17-year cicadas will emerge from underground in a dozen states.

Maps of Oregon landslide susceptibility as presented by Carson MacPherson-Krutsky.

How Maps Affect Perception

Mark Altaweel

Maps are both a great tool for telling us an important message but they can also be a key part of false narratives or misleading information.

A black Eastern gray squirrel looks in a trash container. Photo: Caitlin Dempsey, CC BY 4.0

Anthropause: The Impact of Covid-19 Related Slowdowns on Wildlife

Katarina Samurović

Human-animal relations are extremely complex, and our presence - or absence - has greater power over the population dynamics than we commonly think

Streams meander on the flat landscape, Bering Land Bridge National Preserve, 2014.

How Oxbow Lakes Form

Elizabeth Borneman

An oxbow lake is a uniquely shaped lake resulting from the path of a meandering river.

Map with the optimized vaccination routes. Map: SCW CSU.

Using GIS to Create a Vaccination Route Modeling Tool

Geo Contributor

NHS South, Central and West CSU has developed the new bespoke Covid-19 vaccination route modeling tool using Esri's GIS.