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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.
QGIS is a very popular popular open source GIS software.

GIS Tutorials

December 6, 2023December 6, 2023 by Caitlin Dempsey

Online GIS tutorials from Geography Realm for mapping and data analysis.

Categories GIS Learning Tags arcgis, ArcGIS tutorial, ArcView, Esri, GIS, GIS tutorial
A clump of dried and browned leaves in a bright green leaved deciduous tree.

What are Those Clumps in Trees?

December 4, 2023 by Caitlin Dempsey

A dense clump of dried leaves and twigs in a tree is mostly likely a squirrel’s nest, known as a drey.

Categories Biogeography
A cropped closeup view of the monarch butterflies.

Monarch Butterfly Overwintering in California

December 2, 2023 by Caitlin Dempsey

November and December are the best times to see large clusters of monarch butterflies overwintering in the coastal groves of California.

Categories Biogeography Tags butterfly migration
Screenshot from QGIS showing the interface for adding a CSV file with a red circle around the dropdown menus for designated the X and Y fields.

X is Longitude, Y is Latitude

November 26, 2023November 24, 2023 by Caitlin Dempsey

Here are some simple strategies for remembering that X is longitude and Y is latitude in GIS.

Categories GIS and Geospatial Technologies Tags coordinates, GIS Data, latitude and longitude
A shaded relief map of the United States with inset maps for Alaska and Hawaii with lowest points in each state marked with a small black dot and highest points in each state marked with a red diamond symbol.

U.S. States With the Most Extreme Elevation Spans

November 20, 2023November 20, 2023 by Caitlin Dempsey

Here are the states with the greatest difference in elevation between the highest and lowest points.

Categories Geomorphology Tags elevation, United States
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  • Home
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  • About