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A Song of Our Warming Planet - Understanding climate change through music



When faced with the challenge of sharing the latest climate change discoveries, scientists often rely on data graphics and technical illustrations. University of Minnesota undergrad Daniel Crawford came up with a completely different approach. He’s using his cello to communicate the latest climate science through music.
 
Thermometer measurements show the average global temperature has risen about 1.4 °F (0.8 °C) since 1880. Typically, this warming is illustrated visually with line plots or maps showing year-by-year changes in annual temperatures. As an alternative, Crawford used an approach called data sonification to convert global temperature records into a series of musical notes.
 
The final result, “A Song of Our Warming Planet,” came about following a conversation Crawford had with geography professorScott St. George during an internship. St. George asked Crawford about the possibility of turning a set of data into music.
 
“Data visualizations are effective for some people, but they aren’t the best way to reach everyone,” says St. George. “Instead of giving people something to look at, Dan’s performance gives them something they can feel.”
 
Crawford based his composition on surface temperature data from NASA’s Goddard Institute of Space Studies. The temperature data were mapped over a range of three octaves, with the coldest year on record (1909) set to the lowest note on the cello (open C). Each ascending halftone is equal to roughly 0.03°C of planetary warming.
 
In Crawford’s composition, each note represents a year, ordered from 1880 to 2012. The pitch reflects the average temperature of the planet relative to the 1951–80 base line. Low notes represent relatively cool years, while high notes signify relatively warm ones.
 
The result is a haunting sequence that traces the warming of our planet year by year since the late 19th century. During a run of cold years between the late 1800s and early 20th century, the cello is pushed towards the lower limit of its range. The piece moves into the mid-register to track the modest warming that occurred during the 1940s. As the sequence approaches the present, the cello reaches higher and higher notes, reflecting the string of warm years in the 1990s and 2000s.
 
Crawford hopes other researchers and artists will use or adapt his composition to support science outreach, and has released the score and sound files under a Creative Commons license.
 
“Climate scientists have a standard toolbox to communicate their data,” says Crawford. “We’re trying to add another tool to that toolbox, another way to communicate these ideas to people who might get more out of music than maps, graphs and numbers.”
 
The video ends with a stark message: Scientists predict the planet will warm by another 1.8°C  (3.2°F) by the end of this century. This additional warming would produce a series of notes beyond the range of human hearing.
 
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Support for this video was provided by the Institute on the Environment, the College of Liberal Arts, the Undergraduate Research Opportunity Program, and the School of Music at the University of Minnesota.
 
Video production by Elizabeth Giorgi.
Sound recording and engineering by Michael Duffy with the University of Minnesota’s School of Music.
 

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