Wednesday, February 15, 2017

The Shadows of New York City

For Part 3 of my New York trilogy, I am revisiting a fantastic interactive map from the New York Times. It shows a day's worth of shadows on the two solstices (it was posted at the Winter Solstice) and at the vernal equinox. Here is midtown Manhattan on December 21st.
The dark skyscraper canyons are striking. A closer up view shows why building heights cause such political upheavals. Below we see the shadows cast over the south side of Madison Square by the buildings along 23rd St.
 If you hover over a building you get the height and year built. The Madison Green Condos cast a long and persistent shadow over a corner of the park.

The map was created using publicly available 3D models of New York's buildings The diagram below gives a good idea of how the shadows for each area are calculated.
The interactive map is at the top of the article. You can go to an area of interest and choose your season. Here is my grandmother's old building in the Bronx in winter, spring and then summer.

Since people love to look at stadiums on these things here is Yankee Stadium. In winter it does not get much sun but in summer there's plenty of sunshine for baseball. Too bad most games area at night.

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