The NSIDC Web site and data services are currently having intermittent problems and may be unavailable. We are working to restore these services as soon as possible and apologize for any inconvenience this may cause. Please contact NSIDC User Services for assistance.
Local attributes describe the data and provide summary information about the results of the sea ice algorithm. Two types of local attributes are reported: Hierarchical Data Format (HDF) predefined and custom local attributes.
|Attribute Name||Reserved Label(s)||Definition||Sample Value|
|Label||long_name||Long name of the Scientific Data Set (SDS).||Ice surface temperature for daily tile|
|Unit||units||International System of Units (SI) of the data. This attribute may or may not be used.||degree_Kelvin|
|Format||format||How the data should be viewed in Fortran format notation||F4.1|
|Coordinate system||coordsys||Coordinate system to use for the data||cartesian|
|Range||valid_range||Maximum and minimum values within a selected data range||21000,31320|
|Fill Value||_FillValue||Data used to fill gaps in the swath||7|
||Value by which each data element is to be multiplied¹||0.01|
|scale_factor_err||Error induced by scaling¹||0.0|
|add_offset||Value to add to each array element¹||0.0|
|add_offset_err||Error induced by offset¹||0.0|
|calibrated_nt||HDF data types of the calibrated data¹||23|
¹ These values are only used for Ice Surface Temperature (IST).
|Key||Key to the meaning of the coded integers within the SDS.||
|Attribute Name||Definition||Sample Value|
|Key||Explanation of the Quality Assessment (QA) Flag.||0 = good quality
1 = other quality
253 = land mask
254 = ocean mask
255 = fill