Changes between Version 104 and Version 105 of ticket/370/TicketDetails


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Timestamp:
Feb 4, 2020 12:32:03 PM (22 months ago)
Author:
Jin Lee
Comment:

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  • ticket/370/TicketDetails

    v104 v105  
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    131131My thoughts on the benefit of higher UM and PFM resolutions,
    132    * Higher UM resolution will be able to resolve smaller scales. CX background is then at a higher resolution (more spatial variability). This will lead to more accurate CX columns and hence forward modeling. So the background and observation would be closer. Analysis would fit observations more closely. But on the other hand, CX background will have greater spatial variability and this may move model away from observations, which will resulting in analysis being away from observations. Which effect dominates?
     132   * Higher UM resolution will be able to resolve smaller scales. CX background is then at a higher resolution (more spatial variability). This will lead to more accurate CX columns and hence forward modeling. So the background and observation would be closer. Analysis would fit observations more closely. But on the other hand, CX background will have greater spatial variability and this may move some forward model'ed CX columns away from observations, which will resulting in analysis being away from observations. Which effect dominates?
    133133   * Improved PFM resolution will lead to improved evolution of increments. With everything being equal this will lead to improved forward model , which leads to .... Result is a better fit to observation.
    134134