MYD29L2C Product File Specification Version: V5.0.0 Revision: 0 Date: 29 March 2005 ESDT: MYD29L2C Product name: Sea Ice Product Level: 2 PGE: 08 Point of Contact: George Riggs SSAI NASA/GSFC, Code 614.1 Greenbelt, MD 20771 301-614-5650 George.A.Riggs.1@gsfc.nasa.gov Hugh Powell NASA/GSFC, Code 614.1 Greenbelt, MD 20771 301-286-2310 Hugh.W.Powell.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 Dorothy.K.Hall@nasa.gov Description: File specification description of the MYD29L2C 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 MYD29L2C sea ice data product is a coarse resolution, 5 km, product created by sampling the MYD29 product. The MYD29L2C is used for generating global brwose images. The product is not archvied or distributed by a DAAC. 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 Global Metadata: (ECS Global attributes are; CoreMetadata.0, ArchiveMetadata.0, StructMetadata.0) Name: Type: Num_Val: Source: Value: CoreMetadata.0 STRING 1 TK Variable LocalGranuleID STRING 1 PGE Variable SizeMBECSDataGranule DOUBLE 1 DSS 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 OperationalQualityFlagExplanation STRING 1 PGE Variable OperationalQualityFlag STRING 1 PGE Variable ScienceQualityFlagExplanation 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 "MYD29" 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 InputPointer STRING 3 PGE Variable AncillaryInputPointer STRING 1 PGE Variable AncillaryInputType STRING 1 PGE "Geolocation" AssociatedSensorShortName STRING 1 MCF "MODIS" AssociatedPlatformShortName STRING 1 MCF "Aqua" AssociatedInstrumentShortName STRING 1 MCF "MODIS" **Product Specific Attributes (PSA)** AdditionalAttributeName.1 STRING 1 PGE QAPERCENTGOODQUALITY ParameterValue.1 STRING 1 PGE 0 - 100 AdditionalAttributeName.2 STRING 1 PGE QAPERCENTOTHERQUALITY ParameterValue.2 STRING 1 PGE 0 - 100 AdditionalAttributeName.3 STRING 1 PGE GRANULENUMBER ParameterValue.3 STRING 1 PGE Variable AdditionalAttributeName.4 STRING 1 PGE SEAICEPERCENT ParameterValue.4 STRING 1 PGE 0 - 100 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 Aqua specific version with MODIS band 7" AlgorithmPackageVersion STRING 1 PGE Variable InstrumentName STRING 1 MCF "Moderate-Resolution Imaging SpectroRadiometer" ProcessingCenter STRING 1 PGE "MODAPS" ProcessingDateTime STRING 1 PGE Variable SPSOParameters STRING 1 PGE "none" LongName STRING 1 MCF "MODIS/Aqua MYD29 coarse resolution (5km) for QA purposes" LocalInputGranuleID STRING 3 PGE Variable WestBoundingCoordinate DOUBLE 1 PGE Variable NorthBoundingCoordinate DOUBLE 1 PGE Variable EastBoundingCoordinate DOUBLE 1 PGE Variable SouthBoundingCoordinate DOUBLE 1 PGE Variable ProcessingEnvironment STRING 1 PGE Variable DESCRrevision STRING 1 MCF Variable End ArchiveMetadata.0 _________________________________ StructMetadata.0 STRING 1 HDF-EOS TK Variable 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 PixelQA 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 PixelQA 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 ----------------------------------- SCF Algorithm Version DFNT_CHAR 1 PGE Variable End Global Metadata =============================================================================== 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 "MYD03 geolocation product; data read from center pixel in 5 km box" =============================================================================== 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 "MYD03 geolocation product; data read from center pixel in 5 km box" =============================================================================== SDS Definition SDS Name: Sea_Ice_by_Reflectance Description: Sea ice as identified by reflective characteristics for every pixel in the granule. 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 "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" Valid EV Obs Band 2 (%) DFNT_FLOAT32 1 PGE 0 - 100 Valid EV Obs Band 4 (%) DFNT_FLOAT32 1 PGE 0 - 100 Valid EV Obs Band 7 (%) DFNT_FLOAT32 1 PGE 0 - 100 Saturated EV Obs Band 2 (%) DFNT_FLOAT32 1 PGE 0 - 100 Saturated EV Obs Band 4 (%) DFNT_FLOAT32 1 PGE 0 - 100 Saturated EV Obs Band 7 (%) DFNT_FLOAT32 1 PGE 0 - 100 =============================================================================== SDS Definition SDS Name: Sea_Ice_by_Reflectance_Pixel_QA 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 "Sea ice by reflective characteristics spatial QA" 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=good quality, 1=other quality, 252=Antarctica mask, 253=land mask, 254=ocean mask, 255=fill" =============================================================================== SDS Definition SDS Name: Ice_Surface_Temperature 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 scale_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____ Valid EV Obs Band 31 (%) DFNT_FLOAT32 1 PGE 0 - 100 Valid EV Obs Band 32 (%) DFNT_FLOAT32 1 PGE 0 - 100 Saturated EV Obs Band 31 (%) DFNT_FLOAT32 1 PGE 0 - 100 Saturated EV Obs Band 32 (%) DFNT_FLOAT32 1 PGE 0 - 100 Key DFNT_CHAR string length PGE "0.0=missing, 1.0=no decision, 11.0=night, 25.0=land, 37.0=inland water, 39.0=open ocean, 50.0=cloud, 243.0-273.0 expected IST range, 655.35=fill" IST coefficients, <240 DFNT_FLOAT64 4 PGE (-1.571122808700000, 1.0054774, 1.8532795, -0.7905176303000000) IST coefficients, 240-260 DFNT_FLOAT64 4 PGE (-2.372696851500000, 1.0086041, 1.6948239, -0.2052523236000000) IST coefficients, >260 DFNT_FLOAT64 4 PGE (-4.295304634500000, 1.0150179, 1.9495255, 0.1971325790000000) =============================================================================== SDS Definition SDS Name: Ice_Surface_Temperature_Pixel_QA 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 "Ice surface temperature pixel QA" 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=good quality, 1=other quality, 252=Antarctica mask, 253=land mask, 254=ocean mask, 255=fill" ===============================================================================