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Input version v0003 » README_gfas_issue_aug2024.txt

Anne Kubin, 01/16/2025 10:04 AM

 
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Upon login to the ECMWF Atmosphere Data store on 16 Jan 2025 a warning was
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noticed:
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Warning
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13 Jan 2025
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Known issue with anomalous FRP (and emissions flux) values associated with 
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false Aqua MODIS detection at high latitudes over the eastern Arctic for 
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the period 9-14 August 2024. Watch the Forum announcement for updates.
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Forum announcement:
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Issue with GFAS and CAMS global forecast outputs due to contaminated observations
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Michela
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ECMWF Staff
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Aug 2024
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We are aware of an issue with our Global Fire Assimilation System (GFAS) 
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outputs at high latitudes over the eastern Arctic due to some contaminated 
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Fire Radiative Power observations on 9 August 2024 and causing an area of 
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unrealistic estimated in fire emissions in region. This is also affecting 
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the CAMS global atmospheric composition forecasts (e.g. development of 
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unrealistic/false plumes of AOD, CO, PM2.5 and GHGs) across the eastern 
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Arctic region and some care is currently required in their use.
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We are monitoring the situation closely and will share more information 
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with you when it becomes available.
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ECMWF Support
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####################
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source: https://forum.ecmwf.int/t/issue-with-gfas-and-cams-global-forecast-outputs-due-to-contaminated-observations/3995
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Anne Kubin, 16 Jan 2025
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(kubin@tropos.de)
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