Articles

An aerial image of a flock of waterfowl floating on the ocean.

Reliability of Machine Learning Maps

Mark Altaweel

Academics are increasingly adopting machine learning maps to better understand what can happen for a range of environmental events.

Screenshot of a map visualizing hurricane wind speeds.

Fluid Earth: Open-source Visualization of Weather and Climate Data

Geo Contributor

Fluid Earth is a web visualization tool developed by The Ohio State University's Byrd Polar and Climate Research Center (BPCRC) that enables users to view weather and climate patterns.

Outline map of the world showing changes in nitrogen dioxide levels shaded from dark teal to dark red.

Measuring Nitrogen Dioxide Levels in Urban Zones using Geospatial Methods

Mark Altaweel

Earth observation and geospatial techniques have improved the ability to measure nitrogen dioxide at ground level.

A globe showing the view of the arctic and north America with animal migration tracks mapped out.

Big Data and Animal Migration

Mark Altaweel

Scientists are using big data methods combined with modern GPS tracking and machine learning to enhance their understanding of global animal migration patterns.

A simple map of the world showing the continents in gray and oceans in blue.

Geography Facts About the Atlantic Ocean

Caitlin Dempsey

The Atlantic Ocean, named after the Greek god Atlas, is the second-largest ocean in the world.

A flooded street with clouds in the sky.

Higher Resolution U.S. Flood Maps

Mark Altaweel

Researchers have developed a high resolution flood map for the United States.

Book cover showing a bookcase with books and the name of the book, "The Cartographers".

Book Review | The Cartographers

G.T. Dempsey

The Cartographers by Peng Shepherd is a suspense novel with a cartographic twist.

GIS Job Definitions

Caitlin Dempsey

What are the different types of geospatial job listings out there?  Listed here is the list of different GIS, which ...

A small brown bird with light brown chest and white stripes above the eyebrow standing in a white platform.

Bewick’s Wren

Caitlin Dempsey

The Bewick's Wren (Thryomanes bewickii) is a small songbird native to North America.

A map of underwater ocean sounds created by commercial ships in the North Atlantic. The darker orange areas are higher levels of noise.

Mapping the Sounds of the Ocean

Geo Contributor

Using hydrophones, scientists convert sound waves to electrical signals to create images of underwater ocean environments.

A graphic with different maps in a collage with an icon of a hand holding a hovering dollar sign.

Turning Geospatial Skills Into a Business

Mark Altaweel

Those with GIS and geospatial skills have a variety of options for launching their own businesses.

A lidar image of Washington DC show elevations of the buildings and streets.

Lidar Explained

Caitlin Dempsey

Lidar is a technology developed to map the elevation of features on and below the surface of the Earth.

A 16th century map of the Scandinavian peninsula with ships and sea creatures in the water.

Extracting Geospatial Data from Historical Maps

Mark Altaweel

Geospatial methods can detect location names from historical maps, make them searchable, and allow for the automated extraction of geographic data from those maps.

A composite satellite imagery map of the United States.

Geography of the United States

Elizabeth Borneman

Extreme temperatures, topography, wind, and other powerful natural forces have shaped the geography of the United States.

What is a GeoTIFF?

Caitlin Dempsey

A GeoTIFF is a public domain metadata standard which has the georeferencing information embedded within the image file.

Screenshot showing the annual average soil loss layer in ArcGIS Pro.

How to Use ArcGIS Pro to Estimate Soil Erosion from a Catchment Basin

Jeff Oppong

This lesson shows how to use spatial data science and remote sensing techniques in ArcGIS Pro to predict soil erosion in a catchment area using the Universal Soil Loss Equation (USLE).

An aerial image of a port showing rows and rows of shipping containers. An edge of the ocean is the the left of the containers.

The Many Uses of Aerial Imagery

Geo Contributor

Nearmap's Tony Agresta outlines the many applications of aerial imagery, including assessing damage after a disaster, reducing crime, valuing properties, and more.

A black and white dot map of all the centers of ZIP codes in the continental United States.

ZIP Codes in the United States

Caitlin Dempsey

It’s likely that if you routinely send mail to a location within the United States, you know how critical it ...

Screenshot showing how to import an Esri layer package into QGIS from Finder.

How to Import an Esri Layer Package in QGIS

Caitlin Dempsey

While QGIS cannot directly read an Esri layer package, there is a simple technique to unpack the file and import it into this GIS software.

A satellite image of the state of Iowa against a black background with the state flag and USGS and NASA logos in the upper right and left corners.

Geography of Iowa

Marques Hayes

Iowa is a state with many distinct geographies.

Strong winds blew across North and West Africa, picking up massive amounts of dust from the Sahara Desert and transporting it across the Atlantic Ocean as seen in this series of satellite imagery from NASA. captured March 26, March 27, March 28, and March 29, 2018. Image: NASA.

Geography of Saharan Dust: Where and How Does it Travel?

Julian Marks

The Saharan Desert produces vast amounts of atmospheric dust, which is carried and deposited thousands of kilometers away by strong winds traveling over great distances.

Two maps showing chloride water sample levels.

Kriging in Geography

Mark Altaweel

Spatial kriging is a commonly used interpolation technique for estimating raster values.

An artistic rendering of a weather satellite in space.

GOES-T: Next Generation Weather and Space Monitoring

Mark Altaweel

The launch of the GOES-T (GOES-18) satellite provides coverage for the United States' West Coast, Hawaii, and Alaska.

California poppy (Eschscholzia californica). Photo: Caitlin Dempsey.

Endemic, Native, Non-native, and Invasive Species

Caitlin Dempsey

Learn what the terms endemic, native, non-native, or invasive mean for animals and plants.

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.

A colored woodcut map from 1550 of the Western Hemisphere.

First Maps

Caitlin Dempsey

These maps are the earliest known representations of a particular geography, name, or geographical phenomenon.