Topic: Ocean Data Assimilation

Friday, February 10, 2023 from 15-17 UTC

Organisers and Conveners: Max Yaremchuk (NRL, US), Hao Zuo (ECMWF, UK), Nora Schenk (DWD, Germany)

Data assimilation is used more and more widely in operational oceanography and to produce climate reconstructions. With the advent of coupled NWP at many operational centres, improving methods for ocean (and coupled) data assimilation becomes even more important. We invite contributions on ocean DA and coupled ocean-atmosphere DA (with the focus on the ocean component) in all types of models.

Program / Abstracts (PDF Download)

Session recordings (RIKEN website)

Questions asked during the event (Yopad)


  • Improvement of the Ocean 4D-Var Scheme for High-Accuracy Sea Surface Temperature Analysis and Forecast
    Norihisa Usui, Yosuke Fujii, Nariaki Hirose, Ichiro Ishikawa
  • Estimation of Spatially and Temporally Varying Biogeochemical Parameters in a Global Ocean Model
    Nabir Mamnun, Christoph Völker, Mihalis Vrekoussis, Lars Nerger
  • Predicting the Sea-Ice and Ocean State by Combining Sea-Ice and Ocean Data Assimilation with Atmospheric Wind Nudging
    Svetlana N. Loza, Marylou Athanase, Longjiang Mu, Jan Streffing, Miguel Andrés-Martínez, Lars Nerger, Tido Semmler, Dmitry Sidorenko, Helge F. Goessling
  • The Impact of Hybrid Oceanic Data Assimilation in a Coupled Model: A Case Study of a Tropical Cyclone
    Tsz Yan Leung, Amos S. Lawless, Nancy K. Nichols, Daniel J. Lea, Matthew J. Martin
  • Guidance on Localization for Strongly Coupled Atmosphere-Ocean Data Assimilation
    Zofia Stanley, Clara Draper, Sergey Frolov, Laura Slivinski, Wei Huang, Jeffrey Whitaker, Henry Winterbottom

Time Zones:
17 UTC
Europe:           03 – 05 pm GMT (London)     | 04 – 06 pm CET (Berlin)
Asia/Australia: 11 – 01 am CST (Shanghai)  | 00 – 02 am JST (Tokyo)      | 02 – 04 am AEDT (Sydney)
Americas:        07 – 09 am PST (San Fran.) | 08 – 10 am MST (Denver)   | 10 – 12 am EST (New York)

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