GEOS FP - Version 5.13.1 Details
GEOS-5.29.5-p5 was implemented starting with the 12:00 UTC cycle on March 7, 2024. An update was made in the assimilation system to account for erroneous reports of observed surface pressure from some ships. The change involves replacing the observed pressure with the mean sea level pressure at the report location if the two differ by more than 0.1 hPa. This discrepancy most often occurs when the ship's barometer height is not accurately accounted for in the observed pressure. The updated procedure reduces the bias in the analyzed surface pressure in the vicinity of the report locations and improves the forecast impact of these data.
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