Articles

A massive plume of sand and dust was pushed northward from the Sahara desert by the calima, a warm southeasterly wind prevalent in North Africa in the winter, as seen in a satellite view of Spain and Portugal. Image: February 21, 2016, NASA.

Deep Space Mapping of Saharan Dust Height

Caitlin Dempsey

Researchers used four years of measurements from a deep space satellite to calculate the average monthly heights of Saharan dust clouds.

Map showing the NDVI anomaly in 2024 compared to average levels from 1991 to 2020). After a couple of years of above average precipitation in Southern California, vegetations levels in the summer of 2024 were 30% greener than average. Map: NASA, public domain.

Hydroclimate Whiplash: the Impact on California Wildfires

Caitlin Dempsey

Hydroclimate whiplash - the rapid swing between drought and heavy precipitation - plays a role in the increasing intensity of California wildfires.

A photo taken from space that has been labeled with place names of an open water estuary.

Florida’s Largest Open Water Estuary

Caitlin Dempsey

Covering an area of about 400 square miles, Tampa Bay is Florida's largest open water estuary.

A Tweet from 2020 comparing a map to an animal.

Cartopareidolia: Seeing People and Animals in Maps

Caitlin Dempsey

Cartopareidolia is the phenomenon of seeing people and animals in maps.

A screenshot of an application showing a basemap of the SF bay area with blue lifework on top of it.

Shapefile Viewers

Caitlin Dempsey

Explore viewers for visualizing GIS vector data in shapefile format, available for both desktop and web browsers.

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