By measuring rare oxygen isotopes, a team of geochemists has developed a way to deduce long-ago global temperatures 10 kilometers up in the atmosphere, creating a paleo–weather balloon.
Reconstructing ancient climates is murky business. Cores of sediment or ice contain records of temperatures that date back hundreds of thousands or even millions of years, but typically only near Earth’s surface or in the ocean. Now, by measuring rare oxygen isotopes, a team of geochemists has developed a way to deduce long-ago global temperatures 10 kilometers up in the atmosphere, creating, in effect, a paleo–weather balloon.
To create the new probe, Laurence Yeung, a geochemist at Rice University, and his colleagues relied on The challenge was measuring small variations of an exceedingly rare gas, which Yeung says was akin to weighing a Boeing 737 jet to within the weight of a grain of sand. To achieve such precision, Rice graduate student and co-author Asmita Banerjee worked in a freezer room, cutting 100-gram chunks of ice taken from ice cores from Greenland and Antarctica that dated to the LGM. She carefully melted the ice and collected the gasses in the air bubbles.
Indonesia Berita Terbaru, Indonesia Berita utama
Similar News:Anda juga dapat membaca berita serupa dengan ini yang kami kumpulkan dari sumber berita lain.
Weekend severe weather causes 'rare' rainfall in Georgia, deadly flash flood in IndianaAn Indiana woman died after her house was washed away by flash flooding. Meanwhile, two Georgia counties were under a state of emergency as heavy rain swamped the region.
Baca lebih lajut »
Caught on Camera: Rare religious statue stolen from the alter of Camden County churchLeaders of a New Jersey Catholic Church are asking for the return of a rare religious statue they say was stolen from the alter of their chapel last week.
Baca lebih lajut »
Labor report: Metro Denver has rich streaks of relatively rare occupationsJeff Pigati, a research geologist working at the U.S. Geological Services in Lakewood, ran seeds from a site where human footprints were found at White Sands National Park alongside tracks of Wolly…
Baca lebih lajut »
Stunning rare ‘rainbow cave’ discovered at Mount Rainier National ParkA stunning discovery, a “rainbow cave,” was caught on camera at Mount Rainier National Park.
Baca lebih lajut »
Rare fossils reveal basketball-like skin on duck-billed dinosaur“I’ve never seen anything like it; I was completely blown away.’
Baca lebih lajut »
Guided by Voices Compile Tracks From Rare EPs Into New Album 'Scalping the Guru'Guided by Voices are diving into the archives for their next release, 'Scalping the Guru,' which features tracks from four EPs the band released in 1993 and 1994.
Baca lebih lajut »