Aaron Zuspan

@aazuspan.dev

1165 Followers 597 Following

🛰️🌲🔥 Researcher at Oregon State University / Earth observation and fire / open source geospatial / Python / Earth Engine aazuspan.dev

A git diff showing Denali renamed to Mt. Mckinley by executive order
The globe from 3 different angles, showing a dense grid of colored points from dark purple to bright orange, representing annual temperature range.
Title: MODIS RGB - Annual Mosaic 2020. Earth from 3 different angles in natural color, using real satellite imagery. It's an annual mosaic, so there's snow and ice around the Arctic circle.
Title: MODIS RGB - Simulated at Last Glacial Maximum (~22k years ago). Subtitle: Basesd on WorldClim 1.4 downscaled CCSM (Hijmans et al, 2005). Earth from 3 different angles in natural color. It looks relatively similar to the modern world, but the northern hemisphere has much more ice and snow. Western Europe north of the Mediterranean, North America north of Kansas, and the Andes range in South America are white. Sea level was lower, so landforms are slightly larger than present day.
A time series of annual global maps from 1972-2023. Each year shows the count of clear Landsat scenes (0-50) at a given path and row, using a red color scale. Coverage starts very inconsistent and spotty, primarily in North America, Europe, and Australia. As time goes on, coverage extends across the globe and becomes much more consistent year-to-year.
Text that says "Today at 90000.00° latitude you'll see 12.00 daylight hours. Tomorrow will be 0.0 minutes shorter. You would need to travel 1.9 kilometers to keep the same day length." Meanwhile the map shows you traveling from the north pole to the southern hemisphere.
Two animated figure panels. The left panel shows the number of daylight hours on the Y axis and the day-of-year on the X axis. The right panel shows a circle representing the earth, with a line of latitude moving from -90 to 90 degrees. As the line of latitude changes, the left figure changes from a flat line at the equator (same day length year-round) to a steeper sine-like function at the mid-latitudes (longer days mid-year in the northern hemisphere), which gets clipped at extreme latitudes during periods when they experience either no daylight or constant sunlight.