Winter Targeted Observing Periods during the Year of Polar Prediction in the Southern Hemisphere (YOPP-SH)
Bromwich, David H.
University System of Ohio
Gorodetskaya, Irina
Universidade do Porto
Carpentier, Scott
Bureau of Meteorology - Australia
Alexander, Simon
Australian Antarctic Division
Bazile, Eric
Meteo France
Heinrich, Victoria J.
University of Tasmania
Massonnet, Francois
Universite Catholique Louvain
Powers, Jordan G.
NSF Natl Ctr Atmospher Res
Cayette, Arthur
Naval Informat Warfare Ctr Atlantic
Choi, Taejin
Korea Polar Research Institute (KOPRI)
Chyhareva, Anastasiia
Ministry of Education & Science of Ukraine
Colwell, Steven R.
UK Research & Innovation (UKRI)
Cordeira, Jason M.
University of San Diego
Cordero, Raul R.
Universidad de Santiago de Chile
Doerenbecher, Alexis
Meteo France
Duran-Alarcon, Claudio
Universidade do Porto
French, W. John R.
Australian Antarctic Division
Gonzalez-Herrero, Sergi
Agencia Estatal de Meteorologia (AEMET)
Guyot, Adrien
Bureau of Meteorology - Australia
Haiden, Thomas
European Centre for Medium-Range Weather Forecasts (ECMWF)
Hirasawa, Naohiko
Research Organization of Information & Systems (ROIS)
Imazio, Paola Rodriguez
CONICET Natl Weather Serv
Kawzenuk, Brian
University of San Diego
Krakovska, Svitlana
Ministry of Education & Science of Ukraine
Lazzara, Matthew A.
University of Wisconsin System
Litell, Mariana Fontolan
University System of Ohio
Manning, Kevin W.
NSF Natl Ctr Atmospher Res
Norris, Kimberley
University of Tasmania
Park, Sang-Jong
Korea Polar Research Institute (KOPRI)
Ralph, F. Martin
University of San Diego
Rowe, Penny M.
NorthWest Research Associates
Sun, Qizhen
Natl Ctr Marine Environm Forecasting
Vitale, Vito
Consiglio Nazionale delle Ricerche (CNR)
Wille, Jonathan D.
Swiss Federal Institutes of Technology Domain
Zhang, Zhenhai
University of San Diego
Zou, Xun
University of San Diego
Journal
Bulletin of the American Meteorological Society
ISSN
0003-0007
1520-0477
Open Access
closed
Volume
105
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.
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