https://repository.kopri.re.kr/handle/201206/9780 Tue, 21 Apr 2026 13:20:12 GMT 2026-04-21T13:20:12Z https://repository.kopri.re.kr/handle/201206/12054 Title: The Year of Polar Prediction in the Southern Hemisphere (YOPP-SH) Authors: Bromwich, David H.; Werner, Kirstin; Casati, Barbara; Powers, Jordan G.; Gorodetskaya, Irina, V.; Massonnet, Francois; Vitale, Vito; Heinrich, Victoria J.; Liggett, Daniela; Arndt, Stefanie; Barja, Boris; Bazile, Eric; Carpentier, Scott; Carrasco, Jorge F.; Choi, Taejin; Choi, Yonghan; Colwell, Steven R.; Cordero, Raul R.; Gervasi, Massimo; Haiden, Thomas; Hirasawa, Naohiko; Inoue, Jun; Jung, Thomas; Kalesse, Heike; Kim, Seong-Joong; Lazzara, Matthew A.; Manning, Kevin W.; Norris, Kimberley; Park, Sang-Jong; Reid, Phillip; Rigor, Ignatius; Rowe, Penny M.; Schmithusen, Holger; Seifert, Patric; Sun, Qizhen; Uttal, Taneil; Zannoni, Mario; Zou, Xun Abstract: The Year of Polar Prediction in the Southern Hemisphere (YOPP-SH) had a special observing period (SOP) that ran from 16 November 2018 to 15 February 2019, a period chosen to span the austral warm season months of greatest operational activity in the Antarctic. Some 2,200 additional radiosondes were launched during the 3-month SOP, roughly doubling the routine program, and the network of drifting buoys in the Southern Ocean was enhanced. An evaluation of global model forecasts during the SOP and using its data has confirmed that extratropical Southern Hemisphere forecast skill lags behind that in the Northern Hemisphere with the contrast being greatest between the southern and northern polar regions. Reflecting the application of the SOP data, early results from observing system experiments show that the additional radiosondes yield the greatest forecast improvement for deep cyclones near the Antarctic coast. The SOP data have been applied to provide insights on an atmospheric river event during the YOPP-SH SOP that presented a challenging forecast and that impacted southern South America and the Antarctic Peninsula. YOPP-SH data have also been applied in determinations that seasonal predictions by coupled atmosphere-ocean-sea ice models struggle to capture the spatial and temporal characteristics of the Antarctic sea ice minimum. Education, outreach, and communication activities have supported the YOPP-SH SOP efforts. Based on the success of this Antarctic summer YOPP-SH SOP, a winter YOPP-SH SOP is being organized to support explorations of Antarctic atmospheric predictability in the austral cold season when the southern sea ice cover is rapidly expanding. Thu, 01 Oct 2020 00:00:00 GMT https://repository.kopri.re.kr/handle/201206/12054 2020-10-01T00:00:00Z https://repository.kopri.re.kr/handle/201206/12017 Title: Investigation for the cause of east-west different climate responses in Antarctica Authors: Kim, Seong-Joong Fri, 28 Feb 2020 00:00:00 GMT https://repository.kopri.re.kr/handle/201206/12017 2020-02-28T00:00:00Z https://repository.kopri.re.kr/handle/201206/13145 Title: Climate influence of AAO over the Antarctica and the tropical Indian-western Pacific Ocean Authors: Mao, Rui Sat, 01 Feb 2020 00:00:00 GMT https://repository.kopri.re.kr/handle/201206/13145 2020-02-01T00:00:00Z https://repository.kopri.re.kr/handle/201206/10498 Title: Seasonality of aerosol chemical composition at King Sejong Station (Antarctic Peninsula) in 2013 Authors: Hong, Sang-Bum; Yoon, Young Jun; Becagli, Silvia; Gim, Yeontae; Chambers, S.D.; Park, Ki-Tae; Park, Sangjong; Traversi, Rita; Severi, Mirko; Vitale, V.; Kim, Joo-Hong; Jang, Eunho; Crawford, J.; Griffiths, A.D. Abstract: Seasonal variations of ionic species concentrations in Pls43.0 and PM2,5 aerosols were investigated at King Sejong Station (King George Island, Antarctic Peninsula) in 2013. Seasonal variations of PM2,5 mass were also determined, and found to be in the range: 2482.2 944.4 ng m-3 (austral winter) to 3493.3 1223.8 ng m-3 (austral fall). On a weight basis, the PM2.5 ionic species consisted mainly of primary ions from sea spray (-30% in summer,-50% in winter) and partly from secondary ions (-20% in summer), with the ratios of sea spray and secondary ion components to PM2,5 mass showing clear seasonal variation. The seasonal cycle of sea spray components was not well defined, but was weakly correlated with wind speed (r2 = 0.38). This correlation was likely attributable to a combination of the seasonal properties of wind and the measurement site's location at the western tip of Barton Peninsula. The concentrations of sulphur species (CH3S03 and non sea salt SO.i-) were clearly higher during austral summer. Notably, these concentrations were-2-3 times higher during in January 2013 than in other summer months of the field observation period. This was attributed to an increased biomass of algae in the ocean area surrounding King George Island and more frequent air mass passage over ocean areas with algae blooms. The NHt concentration was also clearly higher in austral summer 2013, mainly due to secondary formation from the NH3 released from local emission sources such as penguin colonies and ocean areas near the measurement site with acidic aerosol, but also affected by local meteorology specific to the summer of 2014. Sat, 01 Feb 2020 00:00:00 GMT https://repository.kopri.re.kr/handle/201206/10498 2020-02-01T00:00:00Z