https://repository.kopri.re.kr/handle/201206/14785 2026-04-05T05:44:05Z 2026-04-05T05:44:05Z Jonathan D. Wille Simon P. Alexander Charles Amory Rebecca Baiman Leonard Barthelemy Dana M. Bergstrom Alexis Berne Hanin Binder Juliette Blanchet Deniz Bozkurt Thomas J. Bracegirdle Mathieu Casado Choi, Taejin Kyle R. Clem Francis Codron Rajashree Datta Stefano Di Battista Vincent Favier Diana Francis Alexander D. Fraser Elise Fourre Rene D. Garreaud Christophe Genthon Irina V. Gorodetskaya Sergi Gonzalez-Herrero Victoria J. Heinrich Guillaume Hubert Hanna Joos Kim, Seong-Joong John C. King Christoph Kittel Amaelle Landais Matthew Lazzara Gregory H. Leonard Jan L. Lieser Michelle Maclennan David Mikolajczyk Peter Neff Ines Ollivier Ghislain Picard Benjamin Pohl Martin F. Ralph Penny Rowe Elisabeth Schlosser Christine A. Shields Inga J. Smith Michael Sprenger Luke Trusel Danielle Udy Tessa Vance Etienne Vignon Catherine Walker Nander Wever Xun Zou https://repository.kopri.re.kr/handle/201206/15182 2024-02-08T16:38:13Z 2024-01-01T00:00:00Z

Title: The extraordinary March 2022 East Antarctica “heat” wave. Part I: observations and meteorological drivers Authors: Jonathan D. Wille; Simon P. Alexander; Charles Amory; Rebecca Baiman; Leonard Barthelemy; Dana M. Bergstrom; Alexis Berne; Hanin Binder; Juliette Blanchet; Deniz Bozkurt; Thomas J. Bracegirdle; Mathieu Casado; Choi, Taejin; Kyle R. Clem; Francis Codron; Rajashree Datta; Stefano Di Battista; Vincent Favier; Diana Francis; Alexander D. Fraser; Elise Fourre; Rene D. Garreaud; Christophe Genthon; Irina V. Gorodetskaya; Sergi Gonzalez-Herrero; Victoria J. Heinrich; Guillaume Hubert; Hanna Joos; Kim, Seong-Joong; John C. King; Christoph Kittel; Amaelle Landais; Matthew Lazzara; Gregory H. Leonard; Jan L. Lieser; Michelle Maclennan; David Mikolajczyk; Peter Neff; Ines Ollivier; Ghislain Picard; Benjamin Pohl; Martin F. Ralph; Penny Rowe; Elisabeth Schlosser; Christine A. Shields; Inga J. Smith; Michael Sprenger; Luke Trusel; Danielle Udy; Tessa Vance; Etienne Vignon; Catherine Walker; Nander Wever; Xun Zou Abstract: Between March 15-19, 2022, East Antarctica experienced an exceptional heatwave 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 March 18 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/mid-latitude heat and moisture deep into the Antarctic interior. The scope of the temperature records spurred a large, diverse collaborative effort to study the heatwave’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 heatwave, an area of 3.3 million km2 in East Antarctica exceeded previous March monthly temperature records. Despite a temperature anomaly return time of about one hundred years, a closer recurrence of such an event is possible under future climate projections. In a subsequent manuscript, we describe the various impacts this extreme event had on the East Antarctic cryosphere.

2024-01-01T00:00:00Z Jonathan D. Wille Simon P. Alexander Charles Amory Rebecca Baiman Leonard Barthelemy Dana M. Bergstrom Alexis Berne Hanin Binder Juliette Blanchet Deniz Bozkurt Thomas J. Bracegirdle Mathieu Casado Choi, Taejin Elise Fourre Rene D. Garreaud Christophe Genthon Irina V. Gorodetskaya Sergi Gonzalez-Herrero Victoria J. Heinrich Guillaume Hubert Hanna Joos Kim, Seong-Joong John C. King Christoph Kittel Amaelle Landais Matthew Lazzara Gregory H. Leonard Jan L. Lieser Michelle Maclennan David Mikolajczyk Peter Neff Ines Ollivier Ghislain Picard Benjamin Pohl Martin F. Ralph Penny Rowe Elisabeth Schlosser Christine A. Shields Inga J. Smith Michael Sprenger Luke Trusel Danielle Udy Tessa Vance Etienne Vignon Catherine Walker Nander Wever Xun Zou https://repository.kopri.re.kr/handle/201206/15183 2024-02-08T16:38:14Z 2024-01-01T00:00:00Z

Title: The extraordinary March 2022 East Antarctica “heat” wave. Part 2: impacts on the Antarctic ice sheet Authors: Jonathan D. Wille; Simon P. Alexander; Charles Amory; Rebecca Baiman; Leonard Barthelemy; Dana M. Bergstrom; Alexis Berne; Hanin Binder; Juliette Blanchet; Deniz Bozkurt; Thomas J. Bracegirdle; Mathieu Casado; Choi, Taejin; Elise Fourre; Rene D. Garreaud; Christophe Genthon; Irina V. Gorodetskaya; Sergi Gonzalez-Herrero; Victoria J. Heinrich; Guillaume Hubert; Hanna Joos; Kim, Seong-Joong; John C. King; Christoph Kittel; Amaelle Landais; Matthew Lazzara; Gregory H. Leonard; Jan L. Lieser; Michelle Maclennan; David Mikolajczyk; Peter Neff; Ines Ollivier; Ghislain Picard; Benjamin Pohl; Martin F. Ralph; Penny Rowe; Elisabeth Schlosser; Christine A. Shields; Inga J. Smith; Michael Sprenger; Luke Trusel; Danielle Udy; Tessa Vance; Etienne Vignon; Catherine Walker; Nander Wever; Xun Zou Abstract: Between March 15-19, 2022, East Antarctica experienced an exceptional heatwave 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) which caused these record-shattering temperature anomalies. Here in Part II, 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 which 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. Finally, 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.

2024-01-01T00:00:00Z Bromwich David H. Gorodetskaya Irina V Carpentier Scott Alexander Simon Bazile Eric Heinrich Victoria J. Massonnet Francois Powers Jordan G. Carrasco Jorge F. Cayette Arthur Choi, Taejin Chyhareva Anastasiia Colwell Steven R. Cordeira Jason M. Cordero Raul R. Doerenbecher Alexis Duran-Alarcon Claudio French W. John R. Gonzalez-Herrero Sergi Guyot Adrien Haiden Thomas Hirasawa Naohiko Imazio Paola Rodriguez Kawzenuk Brian Krakovska Svitlana Lazzara Matthew A. Litell Mariana Fontolan Manning Kevin W. Norris Kimberley Park, Sang-Jong Ralph F. Martin Rowe Penny M. Sun Qizhen Vitale Vito Wille Jonathan D. Zhang Zhenhai Zou Xun https://repository.kopri.re.kr/handle/201206/16166 2025-10-23T07:10:53Z 2024-01-01T00:00:00Z

Title: Winter Targeted Observing Periods during the Year of Polar Prediction in the Southern Hemisphere (YOPP-SH) Authors: Bromwich David H.; Gorodetskaya Irina V; Carpentier Scott; Alexander Simon; Bazile Eric; Heinrich Victoria J.; Massonnet Francois; Powers Jordan G.; Carrasco Jorge F.; Cayette Arthur; Choi, Taejin; Chyhareva Anastasiia; Colwell Steven R.; Cordeira Jason M.; Cordero Raul R.; Doerenbecher Alexis; Duran-Alarcon Claudio; French W. John R.; Gonzalez-Herrero Sergi; Guyot Adrien; Haiden Thomas; Hirasawa Naohiko; Imazio Paola Rodriguez; Kawzenuk Brian; Krakovska Svitlana; Lazzara Matthew A.; Litell Mariana Fontolan; Manning Kevin W.; Norris Kimberley; Park, Sang-Jong; Ralph F. Martin; Rowe Penny M.; Sun Qizhen; Vitale Vito; Wille Jonathan D.; Zhang Zhenhai; Zou Xun Abstract: The Year of Polar Prediction in the Southern Hemisphere (YOPP-SH) held seven targeted observing periods (TOPs) during the 2022 austral winter to enhance atmospheric predictability over the Southern Ocean and Antarctica. The TOPs of 5-10-day duration each featured the release of additional radiosonde balloons, more than doubling the routine sounding program at the 24 participating stations run by 14 nations, together with process-oriented observations at selected sites. These extra sounding data are evaluated for their impact on forecast skill via data denial experiments with the goal of refining the observing system to improve numerical weather prediction for winter conditions. Extensive observations focusing on clouds and precipitation primarily during atmospheric river (AR) events are being applied to refine model microphysical parameterizations for the ubiquitous mixed-phase clouds that frequently impact coastal Antarctica. Process studies are being facilitated by high-time-resolution series of observations and forecast model output via the YOPP Model Intercomparison and Improvement Project (YOPPsiteMIIP). Parallel investigations are broadening the scope and impact of the YOPP-SH winter TOPs. Studies of the Antarctic tourist industry's use of weather services show the scope for much greater awareness of the availability of forecast products and the skill they exhibit. The Sea Ice Prediction Network South (SIPN South) analysis of predictions of the sea ice growth period reveals that the forecast skill is superior to the sea ice retreat phase.

2024-01-01T00:00:00Z Shi Cuicui Mao Rui Gong Dao-Yi Kim, Seong-Joong Feng Xingya Sun Yijie Dong Huilong https://repository.kopri.re.kr/handle/201206/14897 2023-12-06T16:38:22Z 2023-01-01T00:00:00Z

Title: Increased dust transport from Patagonia to eastern Antarctica during 2000-2020 Authors: Shi Cuicui; Mao Rui; Gong Dao-Yi; Kim, Seong-Joong; Feng Xingya; Sun Yijie; Dong Huilong Abstract: Patagonia is an important dust source for Antarctica due to its proximity. However, the changes in the dust transport from Patagonia to Antarctica during the last two decades remain poorly understood. In this study, we used in-situ observations, remote sensing data, and reanalysis data to show changes in the frequency of dust events in Patagonia and their influence on the dust deposition in eastern Antarctica during the austral springs of 2000-2020. An increasing trend in the frequency of Patagonian dust events was observed from 2000 to 2020, with average frequencies of 3.1 and 8.1 in 2000-2006 and 2007-2020, respectively. The increased dust event frequency in Patagonia was caused by an increase in both the mean wind speed, the downslope wind frequency and air temperature and a decrease in the local soil moisture. The increased Patagonian dust event led to an increasing trend in dust deposition in austral spring from the eastern coast of Patagonia to the northeast of the Antarctic Peninsula and northern Weddell Sea, indicating increasing dust transport from Patagonia to eastern Antarctica from 2000 to 2020. This increased dust transport was related to enhanced westerly winds from Patagonia to the northern Weddell Sea. The increased frequency of circulation patterns conducive to dust events also contributed to the increased transport of Patagonian dust to the Weddell Sea and East Antarctica during 2000-2020.

2023-01-01T00:00:00Z