MOD10A2 and MYD10A2 Local Snow Cover Attributes, Version 5
Local attributes describe the data and provide summary information about the results of the snow cover algorithm. Two types of local attributes are reported: Hierarchical Data Format (HDF) predefined and custom local attributes.
HDF Predefined Local Attributes
Attribute Name |
Reserved Label(s) |
Definition |
Sample Value |
| Label | long_name | Long name of the Scientific Data Set (SDS) | Maximum snow extent over the 8-day period |
| Unit | units | International System of Units (SI) of the data. | None |
| Format | format | How the data should be viewed in Fortran format notation | I3 |
| Coordinate system | coordsys | Coordinate system to use for the data | Cartesian |
| Range | valid_range | Maximum and minimum values within a selected data range | 0,254 |
| Fill Value | _FillValue | Data used to fill gaps in the swath | 255 |
| Calibration | scale_factor scale_factor_err add_offset add_offset_err calibrated_nt |
Not used | Not used |
Custom Local Attributes for the Maximum_Snow_Extent Field
Attribute Name |
Definition |
Sample Value |
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| Cell_area (km^2) | Nominal cell area | 0.21465868 | ||||||||||||||||||||||||
| Max_snow_area (km^2) | Estimated area covered by snow | 485125.2 | ||||||||||||||||||||||||
| Key | Key to the meaining of the coded integers within the SDS. |
|
Custom Local Attributes for the Eight_Day_Snow_Cover Field
Attribute Name |
Definition |
Sample Value |
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Key |
Snow occurrence in chronological order. Day in period ordered as 87654321 corresponds to bit order of 76543210. Bit value of 1 means snow was observed. Bit value of 0 means snow was not observed. |
|
See Summary of MOD10A2/MYD10A2 Bit Values for an interpretation of bit values and resulting integer values for the Eight Day Snow Cover field.
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