=======================================================================
MCD43A1 V5.0.4 16dy L3
--------------------
MODIS HDF File Specification
Version: V5.0.4
Date: May-06
Version: V5.0.2
Date: Apr-05
=======================================================================
A note on MCD43 BRDF/Albedo HDF file designators:
ProductIDs Status Description Process
-------------------------------------------------------------------------
MCD43A1 archived BRDF/Albedo Model Parameters 0.5km MOD_PR43B
MCD43A2 archived BRDF/Albedo Quality 0.5 km MOD_PR43B
MCD43A3 archived Albedo 0.5 km MOD_PR43B
MCD43A4 archived Nadir BRDF-adj. reflect. NBAR 0.5km MOD_PR43B
MCD43B1 archived BRDF/Albedo Model Parameters 1km MOD_PR43B
MCD43B2 archived BRDF/Albedo Quality 1 km MOD_PR43B
MCD43B3 archived Albedo 1 km MOD_PR43B
MCD43B4 archived NBAR 1 km MOD_PR43B
MCD43C1 archived CMG BRDF/Albedo Model Parameters MOD_PR43C1
MCD43C2 archived CMG BRDF/Albedo Snow-free Parms. MOD_PR43C1
MCD43C3 archived CMG Albedo MOD_PR43C3
MCD43C4 archived CMG Nadir BRDF-adj. reflect. NBAR MOD_PR43C3
MCD43D01-30 not archived BRDF/Albedo Model Parameters 1km MOD_PR43C1
MCD43D31 not archived BRDF/Albedo Quality 1km MOD_PR43C1
MCD43D32 not archived Local Solar Noon MOD_PR43C1
MCD43D33 not archived Percent of Input MOD_PR43C1
MCD43D34 not archived Percent of Snow MOD_PR43C1
=========================================================================
Product Identifier: MCD43A1
Description: 16-day BRDF/Albedo Model Parameters Global 500m SIN Grid
Contents:
CoreMetadata.0
This string will contain the following PVL fields:
Field Name Data no. of Value
Type values
GROUP = INVENTORYMETADATA
GROUP = CollectionDescriptionClass
SHORTNAME STRING 1 "MCD43A1"
VERSIONID INTEGER 1 Variable
END_GROUP = CollectionDescriptionClass
GROUP = ECSDataGranule
LOCALGRANULEID STRING 1 Variable
SIZEMBECSDATAGRANULE DOUBLE 1 Variable
PRODUCTIONDATETIME STRING 1 Variable
DAYNIGHTFLAG STRING 1 Variable
REPROCESSINGACTUAL STRING 1 "processed once"
REPROCESSINGPLANNED STRING 1 "further update is anticipated"
LOCALVERSIONID STRING 1 Variable
END_GROUP = ECSDataGranule
GROUP = PGEVersionClass
PGEVERSION STRING 1 "2" or Variable
END_GROUP = PGEVersionClass
GROUP = InputGranule
InputPointer STRING FR Variable
END_GROUP = InputGranule
GROUP = RangeDateTime
RANGEBEGINNINGDATE STRING 1 Variable
RANGEENDINGDATE STRING 1 Variable
RANGEBEGINNINGTIME STRING 1 Variable
RANGEENDINGTIME STRING 1 Variable
END_GROUP = RangeDateTime
GROUP = GRingPoint
EXCLUSIONGRINGFLAG STRING 1 Variable
GRINGPOINTLATITUDE DOUBLE 4 Variable
GRINGPOINTLONGITUDE DOUBLE 4 Variable
GRINGPOINTSEQUENCENO INTEGER 4 Variable
END_GROUP = GRingPoint
GROUP = MeasuredParameter
PARAMETERNAME STRING 1 Variable
(A)
GROUP = QAFlags
AUTOMATICQUALITYFLAG STRING 1 "Pass"
AUTOMATICQUALITYFLAGEXPLANATION STRING 1 "No automatic quality assessment is performed in the PGE"
OPERATIONALQUALITYFLAG STRING 1 Variable
OPERATIONALQUALITYFLAGEXPLANATION STRING 1 Variable
SCIENCEQUALITYFLAG STRING 1 Variable
SCIENCEQUALITYFLAGEXPLANATION STRING 1
"http://landweb.nascom.nasa.gov/cgi-bin/QA_WWW/qaFlagPage.cgi?sat=aquaTerra"
END_GROUP = QAFlags
GROUP = QAStats
QAPERCENTINTERPOLATEDDATA INTEGER 1 Variable
QAPERCENTMISSINGDATA INTEGER 1 Variable
QAPERCENTOUTOFBOUNDSDATA INTEGER 1 Variable
END_GROUP = QAStats
END_GROUP = MeasuredParameter
GROUP = AdditionalAttributes
AdditionalAttributeName STRING 17
ADDITIONALATTRIBUTENAME.1 = "QAPERCENTGOODQUALITY"
ADDITIONALATTRIBUTENAME.2 = "QAPERCENTOTHERQUALITY"
ADDITIONALATTRIBUTENAME.3 = "QAPERCENTNOTPRODUCEDCLOUD"
ADDITIONALATTRIBUTENAME.4 = "QAPERCENTNOTPRODUCEDOTHER"
ADDITIONALATTRIBUTENAME.5 = "HORIZONTALTILENUMBER"
ADDITIONALATTRIBUTENAME.6 = "VERTICALTILENUMBER"
ADDITIONALATTRIBUTENAME.7 = "TileID"
ADDITIONALATTRIBUTENAME.8 = "BRDFCODEID"
ADDITIONALATTRIBUTENAME.9 = "SETUPFILEID"
ADDITIONALATTRIBUTENAME.10 = "ALBEDOFILEID"
ADDITIONALATTRIBUTENAME.11 = "BRDFDATABASEVERSION"
ADDITIONALATTRIBUTENAME.12 = "PERCENTLANDINTILE"
ADDITIONALATTRIBUTENAME.13 = "PERCENTPROCESSEDINTILE"
ADDITIONALATTRIBUTENAME.14 = "PERCENTNEWBRDF"
ADDITIONALATTRIBUTENAME.15 = "PERCENTSHAPEFIXEDBRDFS"
ADDITIONALATTRIBUTENAME.16 = "PERCENTSUBSTITUTEBRDFS"
ADDITIONALATTRIBUTENAME.17 = "AVERAGENUMBEROBS"
ParameterValue STRING 17 Variable
END_GROUP = AdditionalAttributes
GROUP = AssociatedPlatformInstrumentSensor
AssociatedPlatformShortName.1 STRING "Terra"
AssociatedInstrumentShortName.1 STRING "MODIS"
AssociatedSensorName.1 STRING "MODIS"
AssociatedPlatformShortName.2 STRING "Aqua"
AssociatedInstrumentShortName.2 STRING "MODIS"
AssociatedSensorName.2 STRING "MODIS"
END_GROUP = AssociatedPlatformInstrumentSensor
END_GROUP = INVENTORYMETADATA
ArchiveMetadata.0
This string will contain the following PVL fields:
Field Name Data no. of Value
Type values
GROUP = ARCHIVEMETADATA
GROUP = BoundingRectangle
WESTBOUNDINGCOORDINATE DOUBLE 1 Variable
NORTHBOUNDINGCOORDINATE DOUBLE 1 Variable
EASTBOUNDINGCOORDINATE DOUBLE 1 Variable
SOUTHBOUNDINGCOORDINATE DOUBLE 1 Variable
END_GROUP = BoundingRectangle
ALGORITHMPACKAGEACCEPTANCEDATE STRING 1 "mmyyyy"
ALGORITHMPACKAGEMATURITYCODE STRING 1 "Normal"
ALGORITHMPACKAGENAME STRING 1 "MCDPR_43A"
ALGORITHMPACKAGEVERSION STRING 1 "5"
GEOANYABNORMAL STRING 1 Variable
GEOESTMAXRMSERROR DOUBLE 1 Variable
LONGNAME STRING 1 Variable
SPSOPARAMETERS STRING 2 "3669, 4332"
PROCESSINGCENTER STRING 1 "MODAPS"
CHARACTERISTICBINANGULARSIZE DOUBLE 1 Variable
CHARACTERISTICBINSIZE DOUBLE 1 Variable
DATACOLUMNS INTEGER 1 Variable
DATAROWS INTEGER 1 Variable
GLOBALGRIDCOLUMNS INTEGER 1 Variable
GLOBALGRIDROWS INTEGER 1 Variable
MAXIMUMOBSERVATIONS INTEGER 1 Variable
NUMBEROFGRANULES INTEGER 1 Variable
COVERAGECALCULATIONMETHOD STRING 1 Variable
NADIRDATARESOLUTION STRING 1 Variable
PROCESSINGENVIRONMENT STRING 1 "Linux or SGI"
DAYSPROCESSED STRING 1 "yyyyddd"
END_GROUP = ARCHIVEMETADATA
StructuralMetadata.0
This string will be populated automatically by HDF-EOS.
Grid Structure: MODIS_Grid_BRDF
Dimension Dimension Name Value
Dimension_0 Ydim:MODIS_Grid_BRDF Variable
Dimension_1 Xdim:MODIS_Grid_BRDF Variable
Dimension_2 Num_Land_Bands_Plus3:MODIS_Grid_BRDF Variable
Dimension_3 Num_Parameters:MODIS_Grid_BRDF Variable
Dimension_4 Num_Shape_Fields:MODIS_Grid_BRDF Variable
Corner Locations:
Corner Values
UpperLeftPointMtrs (Variable, Variable)
LowerRightPointMtrs (Variable, Variable)
Geographic Grid Projection Parameters -- Note that all grid
parameters are currently under development and may need to
be revised prior to V2.0 code delivery.
Supported Grids: Geographic Grid
Sinusoidal
Interrupted Goodes Homolosine
Projection gridID = GCTP_GEO
ProjParam[0] not used
ProjParam[1] not used
ProjParam[2] not used
ProjParam[3] not used
ProjParam[4] not used
ProjParam[5] not used
ProjParam[6] not used
ProjParam[7] not used
ProjParam[8] not used
ProjParam[9] not used
ProjParam[10] not used
ProjParam[11] not used
ProjParam[12] not used
Spherecode not used
GridOrigin HDFE_GD_UL
Projection gridID = GCTP_ISINUS
ProjParam[0] 6371007.181
ProjParam[1] TBD
ProjParam[2] 0.0
ProjParam[3] 0.0
ProjParam[4] 0.0
ProjParam[5] 0.0
ProjParam[6] 0.0
ProjParam[7] 0.0
ProjParam[8] 86400
ProjParam[9] 0.0
ProjParam[10] 1.0
ProjParam[11] 0.0
ProjParam[12] 0.0
Spherecode -1
GridOrigin HDFE_GD_UL
Projection gridID GCTP_GOOD
ProjParam[0] not used
ProjParam[1] not used
ProjParam[2] not used
ProjParam[3] not used
ProjParam[4] not used
ProjParam[5] not used
ProjParam[6] not used
ProjParam[7] not used
ProjParam[8] not used
ProjParam[9] not used
ProjParam[10] not used
ProjParam[11] not used
ProjParam[12] not used
Spherecode 19
GridOrigin HDFE_GD_UL
==============================================================================
Description of Data Fields
--------------------------------
Data_Field_1
Data Field Name: INT16 BRDF_Albedo_Parameters_Band1("YDim","XDim",
"Num_Parameters")
Description: BRDF and albedo model parameters for band 1
Note: The parameters (iso, fvol, fgeo) given are simultaneously the parameters
for the BRDF model, allowing the derivation of bidirectional
reflectance for given angles, and for a corresponding
albedo model, operational through a small look-up table,
allowing derivation of black-sky albedo at any solar zenith angle,
and white-sky albedo.
Data conversions:
file data=(BRDF_Albedo_Parameters / scale_factor) + add_offset
BRDF_Albedo_Parameters=(file data - add_offset) * scale_factor
Data Field Attributes:
Name: Type: Num_Val: Source: Value:
long_name HDF-STRING 1 Code
"BRDF_Albedo_Parameters_Band1"
units HDF-STRING 1 Code
"no units"
valid_range HDF-int16 2 Code 0, 32766
_FillValue HDF-int16 1 Code 32767
scale_factor HDF-float64 1 Code 0.001
scale_factor_err HDF-float64 1 Code 0.0
add_offset HDF-float64 1 Code 0.0
add_offset_err HDF-float64 1 Code 0.0
calibrated_nt HDF-int32 1 Code 5
------------------------------------------------------------------------
Data_Field_2 .... Data_Field_10 Parameters for Bands 2-7, vis,
nir, shortwave
------------------------------------------------------------------------
DataField_11
Data Field Name: UINT8 BRDF_Shape_Indicators("YDim","XDim",
"Num_Shape_Fields")
Description: Provides simple indicators of BRDF shape and properties
Note: Num_Shape_Fields #1 is the NIR band ratio of nadir to 45 degree
forward scattering at 45 degrees sun angle.
Num_Shape_Fields #2 is the NIR band ratio of white-sky albedo to
BRDF isotropic parameter value.
Num_Shape_Fields #3 is normalized difference anisotropy index (NDAX)
at 45 degrees sun angle.
NDAX=(ANIX_red-ANIX_nir)/(ANIX_red+ANIX_nir)
Num_Shape_Fields #4 is structral scattering index (SSI)
SSI = ln (f_vol_nir/f_geo_red)
(All shape indicators are only applied to the pixels with full inversion)
Data conversions:
file data=(BRDF_Shape_Indicators / scale_factor) + add_offset
BRDF_Shape_Indicators=(file data - add_offset) * scale_factor
Data Field Attributes:
Name: Type: Num_Val: Source: Value:
long_name HDF-STRING 1 Code
"BRDF_Shape_Indicators"
units HDF-STRING 1 Code
"ratio or coefficient, no units"
valid_range HDF-int8 2 Code 0, 254
_FillValue HDF-int8 1 Code 255
scale_factor HDF-float64 1 Code 0.04
add_offset HDF-float64 1 Code 25.0
scale_factor_err HDF-float64 1 Code 0.0
add_offset_err HDF-float64 1 Code 0.0
calibrated_nt HDF-int32 1 Code 5
---------------------------------------------------------------------