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The Year of Polar Prediction in the Southern Hemisphere (YOPP-SH)

Bromwich, David H.
[1]; 
Werner, Kirstin
[2]; 
Casati, Barbara
[3]; 
Powers, Jordan G.
[4]; 
Gorodetskaya, Irina
[5]; 
Massonnet, Francois
[6]; 
Vitale, Vito
[7]; 
Heinrich, Victoria J.
[8]; 
Liggett, Daniela
[9]; 
Arndt, Stefanie
[2]; 
[10]; 
Bazile, Eric
[11]; 
Carpentier, Scott
[12]; 
[13]; 
Choi, Taejin
[14]; 
Choi, Yonghan
[14]; 
Colwell, Steven R.
[15]; 
Cordero, Raul R.
[16]; 
Gervasi, Massimo
[17]; 
Haiden, Thomas
[18]; 
Hirasawa, Naohiko
[19]; 
Inoue, Jun
[19]; 
Jung, Thomas
[2]; 
Kalesse, Heike
[20]; 
Kim, Seong-Joong
[14]; 
Lazzara, Matthew A.
[21]; 
Manning, Kevin W.
[4]; 
Norris, Kimberley
[8]; 
Park, Sang-Jong
[14]; 
Reid, Phillip
[12]; 
Rigor, Ignatius
[22]; 
Rowe, Penny M.
[23]; 
Schmithusen, Holger
[2]; 
Seifert, Patric
[24]; 
Sun, Qizhen
[25]; 
Uttal, Taneil
[26]; 
Zannoni, Mario
[17]; 
Zou, Xun
[1]
  • 1
    University System of Ohio
  • 2
    Helmholtz Association
  • 3
    Environment & Climate Change Canada
  • 4
    National Center Atmospheric Research (NCAR) - USA
  • 5
    Universidade de Aveiro
  • 6
    Universite Catholique Louvain
  • 7
    Consiglio Nazionale delle Ricerche (CNR)
  • 8
    University of Tasmania
  • 9
    University of Canterbury
  • 10
    Departamento de Matemática y Física  
  • 11
    Meteo France
  • 12
    Bureau of Meteorology - Australia
  • 13
    Centro de Investigación Gaia Antártica  
  • 14
    Korea Polar Research Institute (KOPRI)
  • 15
    UK Research & Innovation (UKRI)
  • 16
    Universidad de Santiago de Chile
  • 17
    University of Milano-Bicocca
  • 18
    European Centre for Medium-Range Weather Forecasts (ECMWF)
  • 19
    Research Organization of Information & Systems (ROIS)
  • 20
    Leipzig University
  • 21
    University of Wisconsin System
  • 22
    University of Washington
  • 23
    NorthWest Research Associates
  • 24
    Leibniz Association
  • 25
    Natl Ctr Marine Environm Forecasting
  • 26
    National Oceanic Atmospheric Admin (NOAA) - USA
DOI
Date Issued
2020-10
Type
Artículo
Journal
Bulletin of the American Meteorological Society
ISSN
0003-0007
1520-0477
Open Access
bronze
Volume
101
Links
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.
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