Caitlin Dempsey

Caitlin Dempsey is the editor of Geography Realm and holds a master's degree in Geography from UCLA as well as a Master of Library and Information Science (MLIS) from SJSU.

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.

GIS Data for California Public Schools

Caitlin Dempsey

California School Campus Database (CSCD) offers a GIS dataset that contains all of the public school locations from K-12 grades for California. ย 

Debris Flow in Cable Canyon following the 2003 Old Fire in the San Bernardino Mountains, California. Photo: USGS, public domain.

Climate Change is Increasing Post-Wildfire Landslides in Southern California

Caitlin Dempsey

A recently published study has forecasted that climate change is driving increased wildfire and landslide risk in Southern California.

Katmai Calder, Katmai National Park and Preserve, NPS, public domain.

The United States Ranks Third for Historically Active Volcanoes

Caitlin Dempsey

The United States ranks behind Indonesia and Japan for historically active volcanoes based on written records.

Processing Sentinel-2's shortwave-infrared band shows the bright red lava flow on Mount Etna's southern flank on February 18, 2021.

Mount Etna Erupts

Caitlin Dempsey

Mount Etna's latest eruptions occurred on February 16 and again on February 18, 2021.

Screenshot from Kate Berg's GeoPortfolio. Taken 15-Feb-2021.

Highlight Your Skills with a GIS Portfolio

Caitlin Dempsey

A GIS portfolio is a way to digitally present GIS projects and maps that you have created.

Map of temperatures across the United States and Canada on February 15, 2021. Source: NASA.

The Polar Vortex is Causing Extreme Cold in Parts of the United States

Caitlin Dempsey

A disruption of the polar vortex has allowed extremely cold air to descend to over parts of North America as far south as Texas.

High-resolution global composites of Moderate Resolution Imaging Spectroradiometer (MODIS) data. Source: NASA.

Quick Geography Facts About Planet Earth

Caitlin Dempsey

Find quick information about planet earth including the age, mass, volume, and make up of the earth's crust.

Quantarctica – Free GIS Data for QGIS

Caitlin Dempsey

Quantarctica is a collection of freely downloadable GIS data for Antartica.

Map fan from China: Da Qing yi tong er shi san sheng yu di quan tu, 1890. Source: Library of Congress.

What is a Cartifact?

Caitlin Dempsey

A cartifact is an object containing a map that is used primarily for design rather than as a source of information.

Map fan from China: Da Qing yi tong er shi san sheng yu di quan tu, 1890. Source: Library of Congress.

Maps on Fans

Caitlin Dempsey

Maps can be found on a variety of items, including hand fans.

Landsat 8 satellite image of Mount Fiji on January 1, 2021. Source: NASA.

Mount Fuji’s Snow is at a 20-Year Low

Caitlin Dempsey

Satellite data that has tracked snow cover on Mount Fuji shows that the 2020 snow levels are the lowest since 2000.

A diagram showing areas of the world covered in forests and a graph using tree symbols to show which countries have the highest amount of forests.

Climate Change is Shrinking Forests in North America

Caitlin Dempsey

The impact of climate change is reducing the amount of habitat where the trees of North America can thrive.

The horseshoe bend in the New River from one of the overlooks along the Grandview Rim Trail. Photo: NPS /Kevin Daley, public domain.

West Virginia’s First National Park

Caitlin Dempsey

West Virginia's New River Gorge National Park and Preserve became the latest national park when it was designated as such by the U.S. Congress in December of 2020.

Tourist watch steam vent from Steamboat Geyser on Setpmber 4, 2014, the day after it erupted. Photo: Neal Herbert/NPS, public domain.

World’s Largest Active Geyser

Caitlin Dempsey

Located in the Norris Geyser Basin in Yellowstone National Park is Steamboat Geyser, the world's largest active geyser.

Southern stingray (Dasyatis americana), U.S. Virgin Islands, St. Croix. Photo: NOAA CCMA Biogeography Team, public domain.

Using Stingrays to Map the Ocean Floor

Caitlin Dempsey

One research lab in Japan is looking at using marine life to collect 3D geospatial data about the ocean floor.

Introduction to remote sensing and imagery materials hub

Hub for Free Remote Sensing Materials

Caitlin Dempsey

Esri has launched a hub that will serve as the collection point for free remote sensing and imagery materials

Plentiful rains leads to superblooms where the desert becomes blanketed with wildflowers. Photo: Death Valley, NPS, spring 2005.

Geography Facts About Death Valley

Caitlin Dempsey

Learn some interesting geography facts in this article about Death Valley.

Badwater Basin, Death Valley National Park. Photo: NPS, public domain.

The Lowest Point in Every U.S. State

Caitlin Dempsey

This article takes a look at the lowest elevation point in every state in the U.S.

The color of water is a by product of how light is absorbed. Mangrove islands bespeckle the bay in upper Lostman's River. Photo: Paul Nelson, U.S. Geological Survey. Public domain.

Rivers in the United States are Changing Colors

Caitlin Dempsey

A team of researchers analyzed Landsat images over a 38-year period and found that a significant number of large U.S. rivers are changing colors.

The natural oasis of Huacachina in Peru. Image: Landsat 8, NASA, public domain.

South America’s Only Natural Oasis

Caitlin Dempsey

Located in the sand dunes in southwestern Peru on edge of the Atacama desert is the only natural oasis in the continent of South America.

U.S. Geological Survey streamflow-gaging station 08028500 Sabine River near Bon Wier, Texas. Photo: USGS, public domain.

The World’s Human-Made Materials Weigh as Much as All Life on Earth

Caitlin Dempsey

Researchers have calculated that 2020 is the year that the mass of human-made materials exceeded the mass of all living organisms on Earth.

Landsat 8 false-color image of the Sea of Galilee. Image: NASA, acquired October 27, 2020.

The Sea of Galilee’s Water Levels are on the Rise

Caitlin Dempsey

Heavy rains have helped the water level in the Sea of Galilee to rebound.

A black and white dot map showing ZIP codes in the continental United States.

Understanding and mapping ZIP Codes

Caitlin Dempsey

Resources for accessing ZIP code data. Ben Fry has created zipdecode that shows the location of all the ZIP codes in the United States.

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