Part II: Land corresponding to 12.7 km masks

Some points on the global grid may not be filled depending on the source polar stereographic grids' land masks. In going to using a higher resolution land mask on the polar stereographic grid, some points on the global grid change their nature. Likely the most difficult for users of the global grid will be the 2 points which change from ocean to land, and the 16 which change from coast to land. Their locations are listed, as are locations for the 10 points which change from land to ocean, and the 53 which change from land to coast. The net global changes are a decrease of 58,184 km^2 in the area of land, an increase of 51,032 km^2 in the area of coast, and an increase of 7,147 km^2 in the area of ocean. The total area involved in changes is approximately 0.01% of the surface area of the earth, or 0.2% of the area of the ice pack at global maximum extent.

NCEP.EMC.Seaice@noaa.gov
Last Modified 12 April 2001
Return to land mask page
Return to main sea ice page

Areas are in millions of km^2

old area of land 145.166808
new area of land 145.108624

old area of coast 12.092550
new area of coast 12.143582

old area of ocean 352.646611
new area of ocean 352.653758

Switch from Ocean to Land (2):

Old flag New flag Latitude E Longitude
0 157 52.250 158.750
0 157 51.750 181.250

Switch from Coast to Land (16):

Old flag New flag Latitude E Longitude
195 157 82.750 313.250
195 157 73.250 262.750
195 157 69.250 282.750
195 157 68.750 258.250
195 157 68.750 284.750
195 157 68.250 285.250
195 157 65.750 285.750
195 157 63.250 242.250
195 157 58.750 202.750
195 157 58.750 249.750
195 157 56.250 354.250
195 157 50.750 232.750
195 157 -51.750 298.750
195 157 -51.750 299.250
195 157 -53.250 291.750
195 157 -64.750 301.250

Switch from Land to Ocean (10):

Old flag New flag Latitude E Longitude
157 0 78.250 261.250
157 0 76.750 262.250
157 0 76.750 262.750
157 0 75.250 267.250
157 0 72.250 76.250
157 0 69.250 282.250
157 0 60.250 19.250
157 0 45.750 141.750
157 0 -64.750 135.250
157 0 -69.750 9.750

Switch From Land to Coast (53):

Old flag New flag Latitude E Longitude
157 195 81.750 57.750
157 195 81.750 58.250
157 195 81.750 58.750
157 195 81.750 59.250
157 195 80.750 269.750
157 195 80.750 270.250
157 195 80.750 270.750
157 195 78.250 260.750
157 195 78.250 261.750
157 195 77.750 258.250
157 195 77.250 288.250
157 195 77.250 288.750
157 195 76.250 242.750
157 195 75.250 266.750
157 195 74.750 245.250
157 195 72.750 263.750
157 195 72.750 264.250
157 195 72.750 273.750
157 195 72.750 274.250
157 195 72.250 273.750
157 195 69.750 281.750
157 195 68.750 269.750
157 195 66.750 239.750
157 195 65.750 339.250
157 195 59.250 251.750
157 195 57.250 226.250
157 195 57.250 257.750
157 195 55.750 10.750
157 195 55.250 166.250
157 195 54.750 136.750
157 195 54.750 354.750
157 195 54.250 194.250
157 195 53.250 192.250
157 195 51.750 183.750
157 195 48.250 290.750
157 195 47.250 304.250
157 195 46.750 275.250
157 195 45.750 149.750
157 195 45.250 141.250
157 195 44.750 147.250
157 195 44.750 293.250
157 195 41.750 289.750
157 195 39.750 53.250
157 195 37.750 138.750
157 195 36.250 133.250
157 195 -52.750 285.750
157 195 -53.250 289.750
157 195 -54.750 295.250
157 195 -54.750 295.750
157 195 -55.750 292.750
157 195 -61.250 304.750
157 195 -62.250 301.250
157 195 -70.250 21.750

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