Area of pixels in sea ice

Read the NSIDC pixel-area files for either hemisphere. Only 25km product is supported. Tool name "psn25area_v3.dat and pss25area_v3.dat": http://nsidc.org/data/polar-stereo/tools_geo_pixel.html#pixel_area.

readice_area(product = "nsidc", hemisphere = "south", ...)

Arguments

product

"nsidc" the 25km NSIDC passive microwave

hemisphere

south (default) or north

...

ignored

Value

raster with the area of the cells in m^2

See also

readice

Examples

readice_area()
#> class      : RasterLayer 
#> dimensions : 332, 316, 104912  (nrow, ncol, ncell)
#> resolution : 25000, 25000  (x, y)
#> extent     : -3950000, 3950000, -3950000, 4350000  (xmin, xmax, ymin, ymax)
#> crs        : +proj=stere +lat_0=-90 +lat_ts=-70 +lon_0=0 +x_0=0 +y_0=0 +a=6378273 +rf=298.279411123061 +units=m +no_defs 
#> source     : memory
#> names      : NSIDC_true_area_m2 
#> values     : 444053000, 664449000  (min, max)
#> 
readice_area(hemisphere = "north")
#> class      : RasterLayer 
#> dimensions : 448, 304, 136192  (nrow, ncol, ncell)
#> resolution : 25000, 25000  (x, y)
#> extent     : -3850000, 3750000, -5350000, 5850000  (xmin, xmax, ymin, ymax)
#> crs        : +proj=stere +lat_0=90 +lat_ts=70 +lon_0=-45 +x_0=0 +y_0=0 +a=6378273 +rf=298.279411123061 +units=m +no_defs 
#> source     : memory
#> names      : NSIDC_true_area_m2 
#> values     : 382659000, 664449000  (min, max)
#>