Data sources for NOAA NSIDC GeoTIFF images for sea ice concentration and extent.

Source: R/nsidc_seaice.R

Data is colour-palette GeoTIFF in polar stereographic raster format.

nsidc_seaice(
  date,
  hemisphere = c("south", "north"),
  temporal = c("daily", "monthly"),
  varname = c("concentration", "extent"),
  vsi = TRUE
)

Arguments

date

date in POSIXct or Date format, see Details

hemisphere

hemisphere of data source, north or south

temporal

temporal resolution of data source, daily or monthly

varname

variable name to obtain, concentration or extent (note this is a colour image)

vsi

prepend DSN with "/vsicurl/" or not

Value

character string, GDAL readable DSN to a colour palette GeoTIFF (see args 'vsi' and others for options)

Details

The availability of the date is not checked currently, the minimum date is 1978-10-26. Please note that these data were only every two days from date, until a later time (FIXME get these details).

Examples

nsidc_seaice("2023-06-27")
#> [1] "/vsicurl/https://noaadata.apps.nsidc.org/NOAA/G02135/south/daily/geotiff/2023/06_Jun/S_20230627_concentration_v3.0.tif"
#readBin(con <- url(nsidc_seaice("2023-06-27", vsi = FALSE), open = "rb"), "raw"); close(con)