MYD10L2C Product File Specification
Version: V5.0.0
Revision: 0
Date: 21 March 2005
ESDT: MYD10L2C
Name: Coarse resolution snow cover
Level: 2
Process ID: MOD_PR10
Point of Contact: George Riggs
SSAI
NASA, GSFC, Code 614.1
Greenbelt, MD 20771
301-614-5650
George.A.Riggs.1@gsfc.nasa.gov
Principal Investigator: Vincent V. Salomonson
NASA, GSFC, Code 610.0
Greenbelt, MD 20771
301-614-5631
Vincent.V.Salomonson@nasa.gov
Associate Investigator: Dorothy K. Hall
NASA, GSFC, Code 614.1
Greenbelt, MD 20771
301-614-5771
Dorthy.K.Hall@nasa.gov
Description:
Purpose of the MYD10L2C coarse resolution, i.e. 5 km spatial
resolution, snow product is to facilitate QA and compilation of daily
global images of snow cover by the LDOPE in support of QA operations.
Snow cover in MYD10L2C is sampled from the MYD10_L2 product snow
cover. The center pixel of a 5 km by 5 km block of pixels in the MYD10_L2 is
written into the MYD10L2C snow cover and snow cover QA SDSs.
The latitide and longitude SDSs are the same as the latitude and
longitude SDSs in MYD10_L2. ECS metadata of CoreMetadata.0,
ArchiveMetadata.0 and StructMetadata.0 are included in MYD10L2C.
Contents:
SDSs;
Longitude
Latitude
Snow_Cover_5km
Snow_Cover_Pixel_QA_5km
ECS Metadata
Name: Type: Num_Val: Source: Value:
CoreMetadata.0 PVL-STRING 1 SDPTK variable
LocalGranuleID STRING 1 PGE Variable
SizeMBECSDataGranule DOUBLE 1 DSS Variable
ProductionDateTime DATETIME 1 TK Variable
DayNightFlag STRING 1 PGE Variable
ReprocessingActual STRING 1 PGE Variable
LocalVersionID STRING 1 PGE Variable
ReprocessingPlanned STRING 1 PGE Variable
ScienceQualityFlag STRING 1 DP Variable
AutomaticQualityFlagExplanation
STRING 1 PGE Variable
AutomaticQualityFlag STRING 1 PGE Variable
QAPercentMissingData INTEGER 1 PGE Variable
QAPercentCloudCover INTEGER 1 PGE Variable
ParameterName STRING 1 PGE "Snow Cover"
EquatorCrossingDate DATE 1 PGE Variable
EquatorCrossingTime TIME 1 PGE Variable
OrbitNumber INTEGER 1 PGE Variable
EquatorCrossingLongitude
DOUBLE 1 PGE Variable
VersionID INTEGER 1 MCF 5
ShortName STRING 1 MCF "MYD10L2C"
InputPointer STRING 4 PGE Variable
GRingPointLatitude DOUBLE 4 PGE Variable
GRingPointLongitude DOUBLE 4 PGE Variable
GRingPointSequenceNo INTEGER 4 PGE Variable
ExclusionGRingFlag STRING 1 PGE Variable
RangeBeginningDate DATE 1 PGE Variable
RangeBeginningTime TIME 1 PGE Variable
RangeEndingDate DATE 1 PGE Variable
RangeEndingTime TIME 1 PGE Variable
PGEVersion STRING 1 PGE Variable
AncillaryInputPointer STRING M PGE Variable
AncillaryInputType STRING M PGE "Geolocation"
AssociatedSensorShortName
STRING 1 MCF "MODIS"
AssociatedPlatformShortName
STRING 1 MCF "Aqua"
AssociatedInstrumentShortname
STRING 1 MCF "MODIS"
**Product Specific Attributes (PSA)**
AdditionalAttributeName.1 STRING M PGE QAPERCENTGOODQUALITY
ParameterValue.1 STRING 1 PGE Variable
AdditionalAttributeName.2 STRING M PGE QAPERCENTOTHERQUALITY
ParameterValue.2 STRING 1 PGE Variable
AdditionalAttributeName.3 STRING M PGE GRANULENUMBER
ParameterValue.3 STRING 1 PGE Variable
AdditionalAttributeName.4 STRING M PGE SNOWCOVERPERCENT
ParameterValue.4 STRING 1 PGE Variable
End CoreMetadata.0 _________________________________
ArchiveMetadata.0 STRING 1 PGE variable
AlgorithmPackageAcceptanceDate STRING 1 PGE Variable
AlgorithmPackageMaturityCode STRING 1 PGE Variable
AlgorithmPackageName STRING 1 PGE Variable
AlgorithmPackageVersion STRING 1 PGE Variable
LongName STRING 1 MCF "MODIS/Aqua MYD10 Coarse Resolution 5km for QA purposes"
InstrumentName STRING 1 MCF "Moderate-Resolution
Imaging SpectroRadiometer"
LocalInputGranuleID STRING 4 PGE Variable
ProcessingCenter STRING 1 PGE "MODAPS"
ProcessingEnvironment STRING 1 PGE Variable
ProcessingDateTime STRING 1 PGE Variable
SPSOParameters STRING 1 PGE "none"
EastBoundingCoordinate DOUBLE 1 PGE Variable
WestBoundingCoordinate DOUBLE 1 PGE Variable
NorthBoundingCoordinate DOUBLE 1 PGE Variable
SouthBoundingCoordinate DOUBLE 1 PGE Variable
DESCRevision STRING 1 MCF Variable
ProductionHistory STRING 1 PGE Variable
End ArchiveMetadata.0 _________________________________
StructMetadata.0 DFNT_CHAR8 32000 GROUP=SwathStructure
GROUP=SWATH_1
SwathName="MOD_Swath_Snow_5km"
GROUP=Dimension
OBJECT=Dimension_1
DimensionName="Coarse_swath_lines_5km"
Size=406
END_OBJECT=Dimension_1
OBJECT=Dimension_2
DimensionName="Coarse_swath_pixels_5km"
Size=271
END_OBJECT=Dimension_2
END_GROUP=Dimension
GROUP=DimensionMap
END_GROUP=DimensionMap
GROUP=IndexDimensionMap
END_GROUP=IndexDimensionMap
GROUP=GeoField
OBJECT=GeoField_1
GeoFieldName="Longitude"
DataType=DFNT_FLOAT32
DimList=("Coarse_swath_lines_5km","Coarse_swath_pixels_5km")
END_OBJECT=GeoField_1
OBJECT=GeoField_2
GeoFieldName="Latitude"
DataType=DFNT_FLOAT32
DimList=("Coarse_swath_lines_5km","Coarse_swath_pixels_5km")
END_OBJECT=GeoField_2
END_GROUP=GeoField
GROUP=DataField
OBJECT=DataField_1
DataFieldName="Snow_Cover_5km"
DataType=DFNT_UINT8
DimList=("Coarse_swath_lines_5km","Coarse_swath_pixels_5km")
END_OBJECT=DataField_1
OBJECT=DataField_2
DataFieldName="Snow_Cover_Pixel_QA_5km"
DataType=DFNT_UINT8
DimList=("Coarse_swath_lines_5km","Coarse_swath_pixels_5km")
END_OBJECT=DataField_2
END_GROUP=DataField
GROUP=MergedFields
END_GROUP=MergedFields
END_GROUP=SWATH_1
END_GROUP=SwathStructure
GROUP=GridStructure
END_GROUP=GridStructure
GROUP=PointStructure
END_GROUP=PointStructure
END
Global Metadata:
SCF Algorithm Version DFNT_CHAR string length PGE variable
HDFEOSVersion DFNT_CHAR string length PGE variable
===============================================================================
SDS Definition
SDS Name: Snow_Cover_5km
Description: Snow cover data sampled at 5 km resolution from the
snow cover SDS in MYD10_L2 at 500 m resolution.
Number Type: "DFNT_UINT8"
Rank: 2
Dimension sizes:(YDim, XDim)
Dimension Names:
Dimension0: "YDim"
Dimension1: "XDim"
SDS Local Attributes:
Name: Type: Num_Val: Source: Value:
HDF Predefined Attributes by Reserved Label____
long_name DFNT_CHAR string length PGE "Coarse resolution (5km) snow cover"
units DFNT_CHAR string length PGE "none"
coordsys DFNT_CHAR string length PGE "cartesian"
valid_range DFNT_UINT8 2 PGE 0,254
_FillValue DFNT_UNIT8 1 PGE 255
Custom Attributes____
Key: DFNT_CHAR8 "0=missing data, 1=no decision, 11=night, 25=no snow, 37=lake, 39=ocean, 50=cloud, 100=lake ice, 200=snow, 254=detector saturated, 255=fill"
===============================================================================
SDS Definition
SDS Name: Snow_Cover_Pixel_QA_5km
Description: Snow cover pixel QA data sampled at 5 km resolution from the
snow cover pixel QA SDS in MYD10_L2 at 500 m resolution.
Number Type: "DFNT_UINT8"
Rank: 2
Dimension sizes:(YDim, XDim)
Dimension Names:
Dimension0: "YDim"
Dimension1: "XDim"
SDS Local Attributes:
Name: Type: Num_Val: Source: Value:
HDF Predefined Attributes by Reserved Label____
long_name DFNT_CHAR string length PGE "Coarse
resolution (5km) snow cover spatial QA"
units DFNT_CHAR string length PGE "none"
coordsys DFNT_CHAR string length PGE "cartesian"
valid_range DFNT_UINT8 2 PGE 0,254
_FillValue DFNT_UNIT8 1 PGE 255
Custom Attributes____
Key: DFNT_CHAR8 "0=good quality, 1=other quality, 252=Antarctica mask, 253=land mask, 254=ocean mask, 255=fill"
===============================================================================
SDS Definition
SDS Name: Longitude
Description: Longitude SDS copied from the Longitude SDS in MYD10_L2.
Number Type: "DFNT_FLOAT32"
Rank: 2
Dimension sizes:(YDim, XDim)
Dimension Names:
Dimension0: "YDim"
Dimension1: "XDim"
SDS Local Attributes:
Name: Type: Num_Val: Source: Value:
HDF Predefined Attributes by Reserved Label____
long_name DFNT_CHAR string length PGE "Coarse 5 km resolution longitude"
units DFNT_CHAR string length PGE "degrees"
valid_range DFNT_FLOAT32 2 PGE -180.000,180.000
_FillValue DFNT_FLOAT32 1 PGE -999.000
Custom Attributes____
source DFNT_CHAR string length PGE "MYD03
geolocation product; data read from center pixel in 5 km box"
===============================================================================
SDS Definition
SDS Name: Latitude
Description: Latitude SDS copied from the Latitude SDS in MYD10_L2.
Number Type: "DFNT_FLOAT32"
Rank: 2
Dimension sizes:(YDim, XDim)
Dimension Names:
Dimension0: "YDim"
Dimension1: "XDim"
SDS Local Attributes:
Name: Type: Num_Val: Source: Value:
HDF Predefined Attributes by Reserved Label____
long_name DFNT_CHAR string length PGE "Coarse 5 km resolution latitude"
units DFNT_CHAR string length PGE "degrees"
valid_range DFNT_FLOAT32 2 PGE -90.000, 90.000
_FillValue DFNT_FLOAT32 1 PGE -999.000
Custom Attributes____
source DFNT_CHAR string length PGE "MYD03
geolocation product; data read from center pixel in 5 km box"
===============================================================================