Caitlin Dempsey
North America’s Lowest Point on Land is Currently a Lake
Two recent heavy rainfall events have filled Badwater Basin, the lowest point in North America on land, up with water.
Using QGIS to Create a Hexbin Map
It is fairly easy to create a hexbin map using QGIS by following this GIS tutorial.
Geography of Lightning Strikes in the United States
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.
Overwintering Monarch Butterfly Populations
The latest counts of overwintering monarch butterflies in California and Mexico.
Before There was GPS: Personal Navigation in the Early 20th Century
Here are a few creative ways inventors tried to make driving directions easier before there was GPS.
Mapping Geotagged Photos in QGIS
Geotagged photos can be easily mapped out in QGIS by following this GIS tutorial.
Why Climate Change is Making Some Animals More Nocturnal
Increase daytime heat linked to climate change is driving some wildlife to become more active at night.
Geography of Atolls
Atolls are ring-shaped coral reefs, islands, or a series of islets that encircle a lagoon either partially or completely.
Cordiform: Heart-Shaped Map Projections
Heart shaped map projections are known as cordiform map projections which is derived from the Latin "cor" for heart and form for shape.
Nor’easter Storms in the United States
Nor'easters are powerful storms that bring heavy snowfall to the East Coast of the United States, primarily between September and April.
Using GIS to Map an Individual Animal’s Home Range
GIS can be used to map the estimated home range based on the collected point locations of individual animals as they move through an environment.
How Normalized Difference Water Index is Used to Map Flooding
The Normalized Difference Water Index (NDWI) is a calculation used in remote sensing to monitor and measure the amount of moisture in vegetation and surface water bodies.
Find Public GIS Data with Google’s Earth Engine Catalog
The Earth Engine Data Catalog lets users search and discover Earth observation public datasets.
Alviso Slough in the San Francisco Bay
The Alviso Slough in the San Franciso Bay is a restored salt marsh that lies in the path of the Pacific Flyway.
What is the Outlook for California’s Atmospheric Rivers?
During the winter months, atmospheric rivers carry enormous amounts of water to the state of California.
A Review of the State of Crowdsourced Geospatial Data
A review in the Journal of Remote Sensing provides an updated look at the benefits and concerns when it comes to collaborative geospatial data collection.
Using AI to Digitize Data From Scanned Maps
This AI-powered plugin is designed to automate the digitization of data from scanned maps and PDFs in QGIS for GIS users.
Learn How to Georeference a Map in QGIS Using GIS Data
Learn how to georeference a map using GIS data in QGIS with this step-by-step tutorial.
The Coastline Paradox: Why Measuring Coastlines isn’t that Simple
The coastline paradox is the concept that the measured length of a coastline will change depending on the scale of the GIS data used for the measurement.
What is England’s Highest Mountain?
Found at 978 metres (3,209 ft) above sea level, Scafell Pike is located in Lake District National Park in Cumbria.
Sea Otters are a Keystone Species
Keystone species are plants or animals, like the sea otter, whose presence in an ecosystem plays a crucial role in its health.
Mapping Glacier Loss in Western Canada
Researchers are using remotely sensed data and satellite imagery to map glacier loss in Western Canada.
Teaching GIS to Kids to Help Them Learn Spatial Skills
Tips and resources to help you get started with teaching your children about GIS and mapping.
Geography of Penguins
Penguin are agile swimming birds with habitat that ranges from Antarctica to the Galapagos Islands.
Introduction to GIS
GIS is a technological field that incorporates geographical features with tabular data in order to map, analyze, and assess real-world problems.