North Pacific High Area, January - February Mean

Winter values (January - February mean) of the NPH area can be used as an ecosystem pre-conditioning index (Schroeder et al., doi:10.1002/grl.50100).The area of the NPH are calculated from monthly mean sea level pressure (SLP) fields created by the U.S. Navy Fleet Numerical Meterology and Oceanography Center (FNMOC).

Monthly SLP data available at <a href="coastwatch.pfeg.noaa.gov/erddap/griddap/erdlasFnWPr.html" target="_blank">coastwatch.pfeg.noaa.gov/erddap/griddap/erdlasFnWPr.html</a>. The area is the areal extent of the 1020 hPa contour for a given month. The January - February mean is the average of the January and February areas for a given year.; Additional Calculations: The NRT ROMS temperature data downloaded from the UCSC website (<a href="oceanmodeling.ucsc.edu/index.html" target="_blank">oceanmodeling.ucsc.edu/index.html</a>) has grid points with 2 m temperature data reported as Not-A-Number, these values are 2 m temperatu.