Changes for document Stratosphere Sub-Project

From version 21.1
edited by s2s_wiki
on 2022/10/25 22:15
To version 22.1
edited by s2s_wiki
on 2022/10/25 22:18
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25 -**Ongoing Activities (1 of 2)**
25 +**Ongoing Activities (1 of 3):**
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27 27 Our initial analysis of stratospheric predictability and processes in the S2S prediction systems revealed issues with biases in these models that vary as a function of lead-time and initialization time. A community project is ongoing to evaluate stratosphere-troposphere coupling biases in S2S prediction systems, and how these biases may influence predictive skill. We currently have researchers from 11 countries contributing to this analysis (Switzerland, Israel, Spain, United States, Finland, South Korea, United Kingdom, Japan, Australia, Norway, Argentina). Core questions we seek to answer include:
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42 42 A second community paper will be submitted in 2023. If you would like to join these efforts, please contact the SNAP co-chairs (Amy Butler, NOAA and Chaim Garfinkel, Hebrew University) or Zachary Lawrence.
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45 -**Ongoing Activities (2 of 2):
45 +**Ongoing Activities (2 of 3):
46 46 __S__tratospheric __N__udging __A__nd __P__redictable __S__urface __I__mpacts (SNAPSI - **experiments for operational centres to perform that isolate the role of the stratosphere on predictive skill)
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48 48 Recent studies including our review papers have highlighted that key to understanding stratosphere-troposphere coupling in the extra-tropics and S2S predictability more broadly is a greater understanding how the representation of tropospheric eddy-jet feedbacks contribute to this predictability. Similarly, in the tropics, a focus on the links between the QBO and MJO predictability is very important. With this in mind, our next major project is to plan, coordinate, and analyze an experiment in which the stratosphere is damped towards observed stratospheric events, replicating earlier idealised studies in simpler, low- resolution models which helped to develop more detailed theories for how planetary and synoptic scale eddies contribute to coupling between the stratosphere and troposphere. Peter Hitchcock is the scientific lead.
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74 74 Anyone interested in participating in the analysis for the 4 community papers is encouraged to contact Peter Hitchcock (aph28@cornell.edu). The data embargo for the broader community will tentatively be lifted in 2024.
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77 +**Ongoing Activities (3 of 3):**
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79 +SNAP is co-organizing a meeting in Munich in October 2023. Additional details are available on the **[[First Circular>>url:http://s2sprediction.net/xwiki/bin/download/Phase2/Stratosphere/Munich2023_DynVarSNAP%20%283%29.pdf]]**. Results and discussion from the two ongoing projects will be presented and highlighted at this workshop.
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