Reduce the Use of Enhanced Mesoscale AMV Data in the Mid-Layer of Atmosphere #713
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ShunLiu-NOAA
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Apr 1, 2024
…er AMVs (#724) **Description** This is an update of the QC process for the enhanced high-resolution GOES-R mesoscale floater AMVs to resolve the issue #713. As mentioned in the issue, enhanced AMV data are derived from IR band, which turns out to be not reliable in the mid-layer of atmosphere. Adding additional QC process to remove data in those layers are necessary and proved to enhance the Hurricane intensity forecast. **Type of change** Please delete options that are not relevant. - [ ] Bug fix (non-breaking change which fixes an issue) - [x] New feature (non-breaking change which adds functionality) - [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected) - [ ] This change requires a documentation update **How Has This Been Tested?** This change has been tested with GSI regression test on Hera. **Checklist** - [x] My code follows the style guidelines of this project - [x] I have performed a self-review of my own code - [x] I have commented my code, particularly in hard-to-understand areas - [x] New and existing tests pass with my changes - [x] Any dependent changes have been merged and published
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The enhanced mesoscale AMV data are derived from IR band, which turns out to be not reliable in the mid-layer of atmosphere. Recent experiments shows improvement especially in Hurricane intensity forecast by removing the data between 400-600mb in QC process. This part is currently used in HAFSv2. This change will require minor changes in setupw.f90.
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