The announcement Google Earth Timelapse has created a bit of a stir, with a number of videos exploring landscape change of natural and urban systems. From their site:
“Timelapse is a global, zoomable video that lets you see how the Earth has changed over the past 32 years. It is made from 33 cloud-free annual mosaics, one for each year from 1984 to 2016, which are made interactively explorable by Carnegie Mellon University CREATE Lab’s Time Machine library, a technology for creating and viewing zoomable and pannable timelapses over space and time.”
I’m a bit disappointed with the resolution – as it is not able to zoom in to a district level at a scale that provides appropriate level of detail. That may be surmountable by using Google Earth Engine and delving into the API and programming tools.
There’s also a series of Datasets that are available from the Google Earth Engine that would be interesting to explore also, including maps for aerial imagery, geophysical data, climate/weather and demographics.
I used the Timelapse Tour Editor to quickly make a few maps of Seattle and Portland – with an eye towards For Seattle, I wanted to focus on the development of South Lake Union, where Amazon and other development has been most pronounced in the past decade or so. It shows how much redevelopment has occurred there, as well as throughout the downtown core (mostly visible with white roofs).
These are better by clicking the title and viewing in full size, as the grain for urban areas is pretty bad.
For Portland, I wanted to zoom in on the inner Southeast area, around Division Street, which was been subject to a fair amount of density in recent years. The inability to zoom into that level of detail makes this a bit less instructive, but does show the level of development north of downtown, and across the river the ‘fingers’ of density on transit mixed-use streets (which is what provides for vibrant, walkable urban neighborhoods that make Portland, well… Portland.
Lots of fun exploration planned for this.