MOD29L2C Product File Specification
Version: V5.0.1
Revision: 0
Date: 9 November 2004
Product ID: MOD29L2C
ESDT: MOD29L2C
Product name: Sea Ice Coarse Resolution
Product Level: 2
PGE: 08
Point of Contact: George Riggs
SSAI
NASA, GSFC, Code 971
Greenbelt, MD 20771
301-614-5650
George.A.Riggs.1@gsfc.nasa.gov
Hugh Powell
SAIC
NASA, GSFC, Code 974.1
Greenbelt, MD 20771
301-286-2310
Hugh.W.Powell.1@gsfc.nasa.gov
Principal Investigator: Vincent V. Salomonson
NASA, GSFC, Code 900
Greenbelt, MD 20771
301-614-5631
Vincent.V.Salomonson@nasa.gov
Associate Investigator: Dorothy K. Hall
NASA, GSFC, Code 971
Greenbelt, MD 20771
301-614-5771
Dorothy.K.Hall@nasa.gov
Description:
This specification description of the MOD29L2C coarse resolution 5km sea
ice product.
A general description of the global metadata is given.
Descriptions of the SDSs are given along with listing of the local
attributes, dimensions, and content of the SDSs.
The MOD29L2C sea ice data product is generated for granules of MOD29.
The purpose of the MOD29L2C product is to support quality assurance
(QA) analysis and generation of QA images at the SCF and LDOPE.
Spatial resolution of MOD29L2C is 5 km. The HDF-EOS data product
consists of nine global attributes with a maximum of six SDSs in a
day swath and a minimum of four SDSs in a night swath. A swath that
is both day and night has six SDSs.
SDSs always produced;
Latitude
Longitude
SDSs produced for day data;
Sea_Ice_by_Reflectance
Sea_Ice_by_Reflectance_Pixel_QA
Ice_Surface_Temperature
Ice_Surface_Temperature_Pixel_QA
SDSs produced for night data;
Ice_Surface_Temperature
Ice_Surface_Temperature_Pixel_QA
The data product and algorithm are described in the MODIS Sea
Ice Data Product User Guide. The user should refer to that document
for detailed description of the product, how to interpret the product
and attributes (metadata). Other information may be found at
http://modis-snow-ice.gsfc.nasa.gov/
Contents:
Global Metadata:
(ECS Global attributes are; CoreMetadata.0, ArchiveMetadata.0, StructMetadata.0)
Name: Type: Num_Val: Source: Value:
CoreMetadata.0 STRING 1 SDPTK Variable
LocalGranuleID STRING 1 PGE Variable
ProductionDateTime DATETIME1 TK Variable
DayNightFlag STRING 1 PGE Variable
ReprocessingActual STRING 1 PGE Variable
LocalVersionID STRING 1 PGE "SCF V5.0.0"
ReprocessingPlanned STRING 1 PGE Variable
ScienceQualityFlag STRING 1 DP "Not Investigated"
AutomaticQualityFlagExplanation
STRING 1 PGE Variable
AutomaticQualityFlag STRING 1 PGE Variable
QAPercentMissingData INTEGER 1 PGE 0 - 100
QAPercentCloudCover INTEGER 1 PGE 0 - 100
ParameterName STRING 2 PGE "Sea_Ice_by_Reflectance"
"Ice_Surface_Temperature"
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 "MOD29L2C"
InputPointer STRING 3 PGE Variable
GRingPointLongitude DOUBLE 4 PGE Variable
GRingPointLatitude DOUBLE 4 PGE Variable
GRingPointSequenceNo INTEGER 4 PGE Variable
ExclusionGRingFlag STRING 1 PGE "N"
RangeEndingDate DATE 1 PGE Variable
RangeEndingTime TIME 1 PGE Variable
RangeBeginningDate DATE 1 PGE Variable
RangeBeginningTime TIME 1 PGE Variable
PGEVersion STRING 1 PGE Variable
AncillaryInputPointer STRING 1 PGE Variable
AncillaryInputType STRING 1 PGE "Geolocation"
AssociatedSensorShortName
STRING 1 MCF "MODIS"
AssociatedPlatformShortName
STRING 1 MCF "Terra"
AssociatedInstrumentShortName
STRING 1 MCF "MODIS"
**Product Specific Attributes (PSA)**
AdditionalAttributeName.1 STRING 1 PGE QAPERCENTGOODQUALITY
ParameterValue.1 STRING 1 PGE Variable
AdditionalAttributeName.2 STRING 1 PGE QAPERCENTOTHERQUALITY
ParameterValue.2 STRING 1 PGE Variable
AdditionalAttributeName.3 STRING 1 PGE GRANULENUMBER
ParameterValue.3 STRING 1 PGE Variable
AdditionalAttributeName.4 STRING 1 PGE SEAICEPERCENT
ParameterValue.4 STRING 1 PGE Variable
End CoreMetadata.0 _________________________________
ArchiveMetadata.0 STRING 1 PGE Variable
This string wil contain the following PVL fields:
AlgorithmPackageAcceptanceDate
STRING 1 PGE Variable
AlgorithmPackageMaturityCode
STRING 1 PGE "OPL"
AlgorithmPackageName STRING 1 PGE "MOD_PR29 V005"
AlgorithmPackageVersion STRING 1 PGE "Version 5.0.0.0"
LongName STRING 1 MCF "MODIS/Terra MOD29 Coarse Resolution 5km for QA purposes"
InstrumentName STRING 1 MCF "Moderate-Resolution
Imaging SpectroRadiometer"
LocalInputGranuleID STRING 3 PGE Variable
ProcessingCenter STRING 1 MCF "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
DESCRrevision STRING 1 MCF Variable
End ArchiveMetadata.0 _________________________________
StructMetadata.0 DFNT_CHAR8 32000 HDF-EOS TK
GROUP=SwathStructure
GROUP=SWATH_1
SwathName="MOD_Swath_Sea_Ice_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="Sea_Ice_by_Reflectance_5km"
DataType=DFNT_UINT8
DimList=("Coarse_swath_lines_5km","Coarse_swath_pixels_5km")
END_OBJECT=DataField_1
OBJECT=DataField_2
DataFieldName="Sea_Ice_by_Reflectance_Pixel_QA_5km"
DataType=DFNT_UINT8
DimList=("Coarse_swath_lines_5km","Coarse_swath_pixels_5km")
END_OBJECT=DataField_2
OBJECT=DataField_3
DataFieldName="Ice_Surface_Temperature_5km"
DataType=DFNT_UINT16
DimList=("Coarse_swath_lines_5km","Coarse_swath_pixels_5km")
END_OBJECT=DataField_3
OBJECT=DataField_4
DataFieldName="Ice_Surface_Temperature_Pixel_QA_5km"
DataType=DFNT_UINT8
DimList=("Coarse_swath_lines_5km","Coarse_swath_pixels_5km")
END_OBJECT=DataField_4
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
End StructMetadta.0 -----------------------------------
HDFEOSVersion DFNT_CHAR 1 PGE Variable
SCF Algorithm Version DFNT_CHAR 1 PGE Variable
End Global Metadata
===============================================================================
SDS Definition
SDS Name: Longitude
Description: Coarse resolution, 5 km, data for geolocation
Number Type: DFNT_FLOAT32
Rank: 2
Dimension sizes:(406,271)
Dimension Names:
Dimension0: "Coarse_swath_lines_5km"
Dimension1: "Coarse_swath_pixels_5km"
SDS Attributes:
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 -180.00000, 180.0000
_FillValue DFNT_FLOAT32 1 PGE -999.0000
Source DFNT_CHAR string length PGE "MOD03 geolocation product; data read from center pixel in 5 km box"
===============================================================================
SDS Definition
SDS Name: Latitude
Description: Coarse resolution, 5 km, data for geolocation
Number Type: DFNT_FLOAT32
Rank: 2
Dimension sizes:(406,271)
Dimension Names:
Dimension0: "Coarse_swath_lines_5km"
Dimension1: "Coarse_swath_pixels_5km"
SDS Attributes:
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 -90.00000, 90.0000
_FillValue DFNT_FLOAT32 1 PGE -999.0000
Source DFNT_CHAR string length PGE "MOD03 geolocation product; data read from center pixel in 5 km box"
===============================================================================
SDS Definition
SDS Name: Sea_Ice_by_Reflectance_5km
Description: Sea ice as identified by reflective characteristics.
Number Type: DFNT_UINT8
Rank: 2
Dimension sizes:(Coarse_swath_lines_5km, Coarse_swath_pixels_5km)
Dimension Names:
Dimension0: "Coarse_swath_lines_5km"
Dimension1: "Coarse_swath_pixels_5km"
SDS Attributes:
Name: Type: Num_val: Source: Value:
HDF Predefined Attributes
by Reserved Label name_____
long_name DFNT_CHAR string length PGE "Coarse resolution (5km) Sea Ice by reflective characteristics"
units DFNT_CHAR string length PGE "none"
format DFNT_CHAR string length PGE "I3"
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_CHAR string length PGE "0=missing data, 1=no decision, 11=night, 25=land, 37=inland water, 39=ocean, 50=cloud, 100=lake ice, 200=sea ice, 254=detector saturated, 255=fill"
===============================================================================
SDS Definition
SDS Name: Sea_Ice_by_Reflectance_Pixel_QA_5km
Description: SDS of spatial QA data.
Number Type: DFNT_UINT8
Rank: 2
Dimension sizes: (Coarse_swath_lines_5km, Coarse_swath_pixels_5km)
Dimension Names:
Dimension0: "Coarse_swath_lines_5km"
Dimension1: "Coarse_swath_pixels_5km"
SDS Local Attributes:
Name: Type: Num_val: Source: Value:
HDF Predefined Attributes
by Reserved Label name_____
long_name DFNT_CHAR string length PGE
"Coarse resolution (5km) Sea Ice by reflective spatial QA"
units DFNT_CHAR string length PGE "bits"
format DFNT_CHAR string length PGE "I3"
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_CHAR string length PGE "0=good quality, 1=other quality, 252=Antarctica mask, 253=land mask, 254=ocean mask, 255=fill"
===============================================================================
SDS Definition
SDS Name: Ice_Surface_Temperature_5km
Description: Ice surface temperature in degrees Kelvin as
detemined by a split window technique.
Number Type: DFNT_UINT16
Rank: 2
Dimension sizes: (Coarse_swath_lines_5km, Coarse_swath_pixels_5km)
Dimension Names:
Dimension0: "Coarse_swath_lines_5km"
Dimension1: "Coarse_swath_pixels_5km"
SDS Metadata:
Name: Type: Num_val: Source: Value:
HDF Predefined Attributes
by Reserved Label name_____
long_name DFNT_CHAR string length PGE "Ice surface temperature by split-window method"
units DFNT_CHAR string length PGE "degree_Kelvin"
format DFNT_CHAR string length PGE "F3.2"
coordsys DFNT_CHAR string length PGE "cartesian"
valid_range DFNT_UINT16 2 PGE 21000, 31300
_FillValue DFNT_UNIT16 1 PGE 65535
scale_factor DFNT_FLOAT64 1 PGE 0.01
scal_factor_err DFNT_FLOAT64 1 PGE 0.0
add_offset DFNT_FLOAT64 1 PGE 0.0
add_offset_err DFNT_FLOAT64 1 PGE 0.0
calibrated_nt DFNT_INT32 1 PGE 5
Custom Attributes____
Key: DFNT_CHAR string length PGE "0.0=L1B missing data, 1.0=no decision, 11.0=night, 25.0=land, 37.0=inland water, 39.0=open ocean, 50.0=cloud, 210.0-313.0 valid IST range, 655.35=fill"
===============================================================================
SDS Definition
SDS Name: Ice_Surface_Temperature_Pixel_QA_5km
Description: SDS of spatial QA data.
Number Type: DFNT_UINT8
Rank: 2
Dimension sizes: (Coarse_swath_lines_5km, Coarse_swath_pixels_5km)
Dimension Names:
Dimension0: "Coarse_swath_lines_5km"
Dimension1: "Coarse_swath_pixels_5km"
SDS local attributes:
Name: Type: Num_val: Source: Value:
HDF Predefined Attributes
by Reserved Label name_____
long_name DFNT_CHAR string length PGE "Coarse resolution (5km) IST Pixel_QA"
units DFNT_CHAR string length PGE "bits"
format DFNT_CHAR string length PGE "I3"
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_CHAR string length PGE "0=good quality, 1=other quality, 252=Antarctica mask, 253=land mask, 254=ocean mask, 255=fill"
===============================================================================