Winter solstice falls on North America this coming weekend, bringing about the longest night of the year. Amidst the darkness, from Dec. 20 through Dec. 22, the digital display atop San Francisco’s Salesforce Tower will be illuminated by images of colorful geometric shapes rhythmically moving in sequence, telling a significant story about this place we call home.
Each cone, orb, line and wave floating around the crown of the tallest building in the city will symbolize vital information from the Bay Area, ranging from the change of the tides to the number of people taking BART rides.
By using a year’s worth of data (summer ’23 to summer ’24) collected by researchers at NASA, the Bay Area Air Quality Management District and a handful of other government-funded science programs, UC Berkeley professor Greg Niemeyer has combined and visualized information in an artistic manner to create the 20-minute reel, Synchronicity.
More than pretty lights atop a behemoth of a building, Niemeyer says that with the support of Jim Campbell and Emma Strebel of Salesforce Tower Top Art, the goal of this project is to make data more accessible. His thinking: If people are aware of things like the decline in air quality in the Bay Area, maybe they’ll do something about it.

“How can we make that more public?” Niemeyer asks rhetorically during a recent video chat.