Caitlin Dempsey
Mapping Wildfire Movement
The Fire Events Data Suite is being used to map near real-time wildfire behavior including fire perimeters, active front, and total burned areas.
Analemma: The Sun’s Pattern in the Sky
Analemmas are diagrams and photographs that show the changing position of the Sun and the Earth's moon over the course of a year.
Climate Change is Affecting the Color of the Ocean
Researchers are using satellite data to analyzing the levels of phytoplankton in the oceans which are being affected by climate change.
Tallest Active Volcano in Eurasia
With an elevation of 15,597 feet (4,754 meters) Klyuchevskoy is Eurasia's tallest active volcano.
Using Satellites to Map Arctic Amplification
Scientists are using remotely sensed data from Earth observation satellites to map and study Arctic amplification.
Mapping Coral Bleaching With Satellites
Satellite data is being used by scientists to map out where ocean heatwaves are triggering coral bleaching events.
Acorn Woodpeckers in Northern California
Acorn woodpeckers can be found in a range of habitats in Northern California where oak trees are present.
The Gray-Green Urban Divide: How Wealth and Poverty are Visible from Space
Known as the "gray-green divide”, the amount of trees and green space can be an indicator of the income level of the neighborhood.
Largest Island in Alaska
Kodiak Island off the southern coast of Alaska is the second largest island in the United States.
Largest Dome Volcano in the World
Lassen Peak is the world's largest dome volcano with a height of 10,457 feet (3,187 meters).
Third Order Islands
Islands with lakes or ponds that contain smaller islands within them are called recursive islands.
A Harbor in the Center of a Volcano
Deception Island is one of the only places in the world where ships can sail directly into the middle of an active volcano.
Where is the World’s Largest Salt Flat?
Salar de Uyuni in Bolivia, is the largest salt flat in the world and one of the world's largest reservoirs of lithium.
Five Reasons to Start Using QGIS
Here are five compelling reasons to start using the open-source GIS platform QGIS, a free and open source software.
What are Graduated Symbols in GIS?
Graduated symbols is one way of visualizing data that can be quantified on a map in GIS.
GIS and Cartography Quotes
Looking for a memorable GIS quote? Check out this growing collection of interesting and notable quotes relating to GIS, cartography, maps, and geography.
A Guide to Understanding Map Scale in Cartography
Map scale refers to the ratio between the distance on a map and the corresponding distance on the Earth's surface.
Timing Mismatch is Resulting in Fewer Birds
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.
Interesting Geography Facts About Florida
Show off your knowledge about Florida's geography with these fun and amazing facts.
Wildfires in Canada
Canada's boreal forests are facing a strong start to the 2023 wildfire season in Alberta and British Columbia.
Wildfires in Hawaii
Fueled by high winds and drought, a wildfire has destroyed much of Lahaina on the Hawaiian island of Maui.
Phytoplankton Blooms in the Northeast Pacific Ocean
During summer in the Northeast Pacific Ocean, phytoplankton blooms proliferate due to the nutrient-rich upwelling along the continental shelf.
2023 Wildfires in the Western United States
So far in early August of 2023, the wildfire season in the western United States has not been as intense as prior years when a years-long drought was raging.
World’s Largest Freshwater Wind Farm
The world's largest freshwater wind farm is the 89-turbine installation in Lake Ijssel located south of the Wadden Sea in the Netherlands.
Five Basic Types of Sand Dunes
Sand dunes are mounds, hills, or ridges of sand built by wind. Learn about the five basic types of sand dunes.
GIS and Map Contests
Current map and GIS related competitions listed in order of the competition deadline.