Applied Ocean Physics and Engineering (AOP&E)

Permanent URI for this collection

https://hdl.handle.net/1912/10

The Department is a major center for research in fluid mechanics, coastal processes, ocean mixing, acoustics, air-sea interaction, deep submergence, ocean systems and moorings, remote sensing, robotics, certain biological processes, image processing, signal processing and estimation, control theory, and the dynamics of ocean cables.

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Browsing Applied Ocean Physics and Engineering (AOP&E) by Author "Amory, Charles"
  • Article
    The extraordinary March 2022 East Antarctica “Heat” Wave. Part I: observations and meteorological drivers
    (American Meteorological Society, 2024-01-09) Wille, Jonathan D. ; Alexander, Simon P. ; Amory, Charles ; Baiman, Rebecca ; Barthelemy, Leonard ; Bergstrom, Dana M. ; Berne, Alexis ; Binder, Hanin ; Blanchet, Juliette ; Bozkurt, Deniz ; Bracegirdle, Thomas J. ; Casado, Mathieu ; Choi, Taejin ; Clem, Kyle R. ; Codron, Francis ; Datta, Rajashree ; Di Battista, Stefano ; Favier, Vincent ; Francis, Diana ; Fraser, Alexander D. ; Fourre, Elise ; Garreaud, Rene D. ; Genthon, Christophe ; Gorodetskaya, Irina V. ; Gonzalez-Herrero, Sergi ; Heinrich, Victoria J. ; Hubert, Guillaume ; Joos, Hanna ; Kim, Seong-Joong ; King, John C. ; Kittel, Christoph ; Landais, Amaelle ; Lazzara, Matthew ; Leonard, Gregory H. ; Lieser, Jan L. ; Maclennan, Michelle ; Mikolajczyk, David ; Neff, Peter ; Ollivier, Ines ; Picard, Ghislain ; Pohl, Benjamin ; Ralph, F. Martin ; Rowe, Penny ; Schlosser, Elisabeth ; Shields, Christine A. ; Smith, Inga J. ; Sprenger, Michael ; Trusel, Luke D. ; Udy, Danielle ; Vance, Tessa ; Vignon, Etienne ; Walker, Catherine C. ; Wever, Nander ; Zou, Xun
    Between 15 and 19 March 2022, East Antarctica experienced an exceptional heat wave with widespread 30°–40°C temperature anomalies across the ice sheet. This record-shattering event saw numerous monthly temperature records being broken including a new all-time temperature record of −9.4°C on 18 March at Concordia Station despite March typically being a transition month to the Antarctic coreless winter. The driver for these temperature extremes was an intense atmospheric river advecting subtropical/midlatitude heat and moisture deep into the Antarctic interior. The scope of the temperature records spurred a large, diverse collaborative effort to study the heat wave’s meteorological drivers, impacts, and historical climate context. Here we focus on describing those temperature records along with the intricate meteorological drivers that led to the most intense atmospheric river observed over East Antarctica. These efforts describe the Rossby wave activity forced from intense tropical convection over the Indian Ocean. This led to an atmospheric river and warm conveyor belt intensification near the coastline, which reinforced atmospheric blocking deep into East Antarctica. The resulting moisture flux and upper-level warm-air advection eroded the typical surface temperature inversions over the ice sheet. At the peak of the heat wave, an area of 3.3 million km2 in East Antarctica exceeded previous March monthly temperature records. Despite a temperature anomaly return time of about 100 years, a closer recurrence of such an event is possible under future climate projections. In Part II we describe the various impacts this extreme event had on the East Antarctic cryosphere.
  • Article
    The extraordinary March 2022 East Antarctica “Heat” Wave. part II: impacts on the Antarctic ice sheet
    (American Meteorological Society, 2024-01-09) Wille, Jonathan D. ; Alexander, Simon P. ; Amory, Charles ; Baiman, Rebecca ; Barthelemy, Leonard ; Bergstrom, Dana M. ; Berne, Alexis ; Binder, Hanin ; Blanchet, Juliette ; Bozkurt, Deniz ; Bracegirdle, Thomas J. ; Casado, Mathieu ; Choi, Taejin ; Clem, Kyle R. ; Codron, Francis ; Datta, Rajashree ; Di Battista, Stefano ; Favier, Vincent ; Francis, Diana ; Fraser, Alexander D. ; Fourre, Elise ; Garreaud, Rene D. ; Genthon, Christophe ; Gorodetskaya, Irina V. ; Gonzalez-Herrero, Sergi ; Heinrich, Victoria J. ; Hubert, Guillaume ; Joos, Hanna ; Kim, Seong-Joong ; King, John C. ; Kittel, Christoph ; Landais, Amaelle ; Lazzara, Matthew ; Leonard, Gregory H. ; Lieser, Jan L. ; Maclennan, Michelle ; Mikolajczyk, David ; Neff, Peter ; Ollivier, Ines ; Picard, Ghislain ; Pohl, Benjamin ; Ralph, F. Martin ; Rowe, Penny ; Schlosser, Elisabeth ; Shields, Christine A. ; Smith, Inga J. ; Sprenger, Michael ; Trusel, Luke D. ; Udy, Danielle ; Vance, Tessa ; Vignon, Etienne ; Walker, Catherine C. ; Wever, Nander ; Zou, Xun
    Between 15 and 19 March 2022, East Antarctica experienced an exceptional heat wave with widespread 30°–40°C temperature anomalies across the ice sheet. In Part I, we assessed the meteorological drivers that generated an intense atmospheric river (AR) that caused these record-shattering temperature anomalies. Here, we continue our large collaborative study by analyzing the widespread and diverse impacts driven by the AR landfall. These impacts included widespread rain and surface melt that was recorded along coastal areas, but this was outweighed by widespread high snowfall accumulations resulting in a largely positive surface mass balance contribution to the East Antarctic region. An analysis of the surface energy budget indicated that widespread downward longwave radiation anomalies caused by large cloud-liquid water contents along with some scattered solar radiation produced intense surface warming. Isotope measurements of the moisture were highly elevated, likely imprinting a strong signal for past climate reconstructions. The AR event attenuated cosmic ray measurements at Concordia, something previously never observed. Last, an extratropical cyclone west of the AR landfall likely triggered the final collapse of the critically unstable Conger Ice Shelf while further reducing an already record low sea ice extent.