Google has released a series of time-lapse images showing global change between 1984 and 2012.
The project, which was done in conjunction with the U.S. Geological Survey (USGS), NASA and TIME, was unveiled as a special feature on time.com: TIME and Space.
The images are sourced from NASA’s Landsat mission, a series of Earth-observation satellites that have orbited the planet since 1972, providing scientists, policymakers, and the general public with a wealth of data and imagery used for a wide range of applications. Google Earth Engine’s Rebecca Moore says it “sifted through 2,068,467 images—a total of 909 terabytes of data—to find the highest-quality pixels (e.g., those without clouds), for every year since 1984 and for every spot on Earth” to generate each time-lapse set.
Deforestation around the Surui indigenous reserve in the Brazilian Amazon from 1984-2012. Image courtesy of Google
Highlighted time-lapses include deforestation in a portion of the the Brazilian Amazon, the retreat of Alaska’s Columbia Glacier, urban growth in Las Vegas, the construction of Dubai’s artificial “Palm Islands”, oil sands development in Alberta, the drying up of Lake Urmia, the Middle East’s largest lake; and coal mining in Wyoming.
For more images and background, check out TIME and Space.
The newest Landsat is already in orbit and will begin beaming down images at the end of the month.
Images courtesy of Google
(04/03/2013) Efforts to monitor the world’s forests and other ecosystems got a big boost in February with the launch of Landsat 8, NASA’s newest earth observation satellite, which augments the crippled Landsat 7 currently orbiting Earth (technically Landsat 8 is still named the Landsat Data Continuity Mission (LDCM) and will remain so until May when the USGS turns control of the satellite over to NASA). Landsat 8/LDCM is the most advanced Earth observation satellite to date. It is the eighth Landsat since the initial launch in 1972.
(04/13/2009) In October 2008 scientists with the Royal Botanical Garden at Kew discovered a host of previously unknown species in a remote highland forest in Mozambique. The find was no accident: three years earlier, conservationist Julian Bayliss identified the site—Mount Mabu—using Google Earth, a tool that’s rapidly becoming a critical part of conservation efforts around the world. As the discovery in Mozambique suggests, remote sensing is being used for a bewildering array of applications, from monitoring sea ice to detecting deforestation to tracking wildlife. The number of uses grows as the technology matures and becomes more widely available. Google Earth may represent a critical point, bringing the power of remote sensing to the masses and allowing anyone with an Internet connection to attach data to a geographic representation of Earth.
(03/31/2009) Satellites have long been used to detect and monitor environmental change, but capabilities have vastly improved since the early 1970s when Landsat images were first revealed to the public. Today Google Earth has democratized the availability of satellite imagery, putting high resolution images of the planet within reach of anyone with access to the Internet. In the process, Google Earth has emerged as potent tool for conservation, allowing scientists, activists, and even the general public to create compelling presentations that reach and engage the masses. One of the more prolific developers of Google Earth conservation applications is David Tryse. Neither a scientist nor a formal conservationist, Tryse’s concern for the welfare of the planet led him develop a KML for the Zoological Society of London’s EDGE of Existence program, an initiative to promote awareness of and generating conservation funding for 100 of the world’s rarest species. The KML allows people to surf the planet to see photos of endangered species, information about their habitat, and the threats they face. Tryse has since developed a deforestation tracking application, a KML that highlights hydroelectric threats to Borneo’s rivers, and oil spills and is working on a new tool that will make it even easier for people to create visualizations on Google Earth. Tryse believes the development of Google Earth is a watershed moment for conservation and the environmental movement.