83rd Annual

Wednesday, 12 February 2003
Development of scatterometer–derived research–quality surface pressures for the Southern Ocean
Kyle A. Hilburn, COAPS/Florida State Univ., Tallahassee, FL; and M. A. Bourassa and J. J. O'Brien
Poster PDF (258.8 kB)
High-resolution, research-quality surface pressures are objectively calculated over the Southern Ocean from SeaWinds on QuikSCAT winds. The pressure fields are validated in comparison to in situ observations. Overall, the scatterometer-derived surface pressures are a small improvement over the NCEP/NCAR reanalysis, which is used as the objective technique’s background field. This improvement is understated primarily because the comparison data undersample storms. Instances are found where the NCEP/NCAR reanalysis misses storms entirely and the scatterometer-derived pressures are a large improvement (as much as 20 hPa).

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