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Research Spotlight

Roger Bryant is a Postdoctoral Scholar who studies sedimentary geochemistry.

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Student / Alumni Spotlight

Ziwei Wang studies the current state and future projections of convective extreme events.

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Faculty Spotlight

Sunny Park stands in front of a pyramid of Teotihuacan, which has survived many earthquakes over the past two thousand years.

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Geophysical Science News

  • Prof. Edwin Kite is part of a team investigating “false positives” for life on exoplanets

    February 01, 2023

    Those worlds, like Earth, are both rocky and found in their stars' habitable zones—where life as we know it could plausibly evolve and might produce atmospheric gasses that could be detected using space telescopes.

    "As the research community has come up with models for abiotic origins of gases that could mimic biosignatures, we've really focused on source processes that could operate on Earth-like worlds," says Kite. "However, habitable-zone rocky exoplanets could have compositions and processes dramatically different from Earth. We want to consider a wider range of possible abiotic methane sources to make sure we don't get fooled by 'trickster' planets that emit false positive biosignatures."

    "We don’t know much about the origin of life nor about how life is distributed in the universe," says Kite. "If the scientific community is to make a claim that alien life has been discovered through biosignature detection, it is our responsibility to ensure that we've thought long and hard about all the ways biosignatures could in fact be abiotic geosignatures."

    Get some extra (terrestrial) credit and read the whole article here!

  • Alya Al-Kibbi, a first year grad student, selected for Illinois Space Grant Consortium fellowship

    January 26, 2023

    Alya Al-Kibbi, a first-year graduate student in the Department of the Geophysical Sciences, has been awarded a graduate fellowship from The Illinois Space Grant Consortium (ISGC). The award supports outstanding graduate students pursuing aerospace, astrophysics, astronomy, cosmology, Earth system science and other interdisciplinary space-related science, engineering, or mathematics fields.

    Al-Kibbi was born in Washington, DC, and raised between there and Lebanon. She attended Caltech for undergraduate. As a planetary science student, she plans to research the role that comets play in the formation of planets in the solar system, and how comets can influence the current day compositions of these planets.

    She will receive $10,000 towards research that contributes to furthering NASA’s science goals. “I intend to use the award to fund travel to conferences and expand my scientific perspective, and hopefully to help with the cost of publication of my research down the line,” she said.

    According to Alya’s advisor, Prof. Fred Ciesla from the Department of the Geophysical Sciences, this is a unique and well-deserved opportunity. “I am very happy for Alya; she is very deserving!” he said. “This gives her a bit of extra flexibility to explore the field as she narrows down the focus of her research. To get this opportunity right at the start of graduate school is fantastic.”

    For Al-Kibbi, this fellowship represents a first and strong step towards the development of her scientific career: “I was so excited to have been selected. As a first-year graduate student, I had very little confidence in my application compared to more experienced scientists. I am extremely grateful to have this opportunity to jump start my scientific career.”

  • Study led by UChicago climate scientist Tiffany Shaw provides an explanation as to why the Southern Hemisphere is stormier than the Northern

    December 05, 2022

    For a long time, we didn’t know very much about the weather in the Southern Hemisphere: most of the ways we observe weather are land-based, and the Southern Hemisphere has much more ocean than the Northern Hemisphere does. 

    But with the advent of satellite-based global observing in the 1980s, we could quantify just how extreme the difference was. The Southern Hemisphere has a stronger jet stream and more intense weather events.

    “You can’t put the Earth in a jar,” Professor Tiffany Shaw explained, “so instead we use climate models built on the laws of physics and run experiments to test our hypotheses.”

    Shaw, graduate student Osamu Miyawaki (now at the National Center for Atmospheric Research), and colleagues used a numerical model of Earth’s climate built on the laws of physics that reproduced the observations. Then they removed different variables one at a time, and quantified each one’s impact on storminess. Shaw and her colleagues found two major culprits: ocean circulation and the large mountain ranges in the Northern Hemisphere. The study also found that this storminess asymmetry has increased since the beginning of the satellite era in the 1980s. The increase was shown to be qualitatively consistent with climate change forecasts from physics-based models.

    The results have been published in the Proceedings of the National Academy of Sciences.

    Weather the stormy weather right here!

  • UChicago scientists test a technique to determine age that will open new era of planetary science

    October 27, 2022

    A group with the University of Chicago and the Field Museum of Natural History tested an instrument made by Thermo Fisher Scientific on a piece of a Martian meteorite nicknamed ‘Black Beauty’ and were able to quickly and precisely date it by probing it with a tiny laser beam—a significant improvement over past techniques, which involved far more work and destroyed parts of the sample.

    “We are very excited by this demonstration study, as we think that we will be able to employ the same approach to date rocks that will be returned by multiple space missions in the future,” said Nicolas Dauphas, the Louis Block Professor of Geophysical Sciences at the University of Chicago and first author on a study laying out the results. “The next decade is going to be mind-blowing in terms of planetary exploration.”

    UChicago-affiliated scientists on the paper included Nicolas Dauphas, Timo Hopp, Zhe Zhang, Phillip Heck, Bruce L.A. Charlier, and Andrew Davis.

    Check out more right here!

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