=======================================================================


MCD18A2 V6.0.0 daily L3
--------------------

MODIS HDF File Specification
Version:        V6.0.0
Revision:       0
Date:           2 June 2017
ESDT:		MCD18A1
Name:		MODIS/Terra+Aqua Photosynthetically Active Radiation Daily/3-Hour L3 Global 5km SIN Grid
Level:		3
Process ID:	MCD_PR18A2

Point of Contact:       Dongdong Wang
			Dept. of Geographical Sciences
			UMD
			College Park, MD 20742
			301-405-4538
			ddwang@umd.edu

			Sudipta Sarkar
			SSAI
			NASA, GSFC, Code 619
			Greenbelt, MD 20771
			301-614-6912
			Sudipta.Sarkar@nasa.gov
=======================================================================

Product Identifier: MCD18A2

Description: Daily/3-Hourly Photosynthetically Active Radiation 5km SIN Grid

Contents:    

SDS names:
	PAR
	Direct
   	Diffuse
   	GMT_0000_PAR
   	GMT_0300_PAR
   	GMT_0600_PAR
   	GMT_0900_PAR
   	GMT_1200_PAR
   	GMT_1500_PAR
   	GMT_1800_PAR
   	GMT_2100_PAR
	ViewZenithAngle

Global Metadata:
	CoreMetadata.0
	ArchiveMetadata.0
	StructMetadata.0
	HDFEOSVersion



*Start Global Attributes ===================================================
Name:			Type:	Num_Val:    Source:	Value:

CoreMetadata.0		PVL-STRING
				1		TK	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 V6.0.1"
ReprocessingPlanned	STRING	1       PGE             Variable
ScienceQualityFlag	STRING	1       DP		"Not Investigated"
AutomaticQualityFlagExplanation
			STRING	1       PGE             "No automatic quality assessment done in the PGE"
AutomaticQualityFlag	STRING	1       PGE             "Passed"
ScienceQualityFlagExplanation
			STRING	1       DP		
ParameterName		STRING	1       PGE		"MCD18A2"
EquatorCrossingDate	DATE	32	PGE		Variable
EquatorCrossingTime	TIME	32	PGE		Variable
OrbitNumber		INTEGER	32      PGE             Variable
EquatorCrossingLongitude
			DOUBLE	32	PGE		Variable
VersionID		INTEGER	1       MCF             1
ShortName		STRING	1       MCF             "MCD18A2"
InputPointer		STRING	5       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
AssociatedSensorShortName
			STRING	1	MCF		"MODIS"
AssociatedPlatformShortName
			STRING	1	MCF		"Terra+Aqua"
AssociatedInstrumentShortname
			STRING	1	MCF		"MODIS"

**Product Specific Attibutues (PSA)**
AdditionalAttributeName.1	STRING	1       PGE             identifier_product_doi
ParameterValue.1		STRING	1       PGE             "10.5067/MODIS/MCD18A2.006"
AdditionalAttributeName.2	STRING	1       PGE             identifier_product_doi_authority
ParameterValue.2		STRING	1       PGE             "http://dx.doi.org"
AdditionalAttributeName.3	STRING	1	PGE		HORIZONTALTILENUMBER
ParameterValue.3		INTEGER	1       PGE             0-35
AdditionalAttributeName.4	STRING	1	PGE		VERTICALTILENUMBER
ParameterValue.4		INTEGER	1       PGE             Variable
AdditionalAttributeName.5	STRING	1	PGE		TileID
ParameterValue.5		INTEGER	1       PGE             Variable

End CoreMetadata.0 _________________________________

Name:				Type:	Num_Val:	Source:		Value:
ArchiveMetadata.0	PVL-STRING	1		TK		

CharacteristicBinAngularSize	DOUBLE	1		PGE		Variable
CharacteristicBinSize		DOUBLE	1		PGE		Variable
GeoAnyAbnormal			STRING	1       	PGE             Variable
GeoEstMaxRMSError		DOUBLE	1		PGE		Variable
DataColumns			INTEGER	1		PGE		Variable
DataRows			INTEGER	1		PGE		Variable
GlobalGridColumns		INTEGER	1		PGE		Variable
GlobalGridRows			INTEGER	1		PGE		Variable
LongName                        STRING	1       	MCF             "MODIS/Terra+Aqua Photosynthetically Active Radiation Daily/3-Hour L3 Global 5km SIN Grid"
ProcessingCenter                STRING	1       	MCF             "MODAPS"
NadirDataResolution             STRING      1           MCF		"5km"
SPSOParameters                  STRING	1       	PGE             "none"
NorthBoundingCoordinate         DOUBLE	1       	PGE             Variable
SouthBoundingCoordinate         DOUBLE	1       	PGE             Variable
EastBoundingCoordinate          DOUBLE	1       	PGE             Variable
WestBoundingCoordinate          DOUBLE	1       	PGE             Variable
ProcessingEnvironment           STRING	1       	PGE             Variable
DESCRevision                    STRING	1       	MCF             Variable
End ArchiveMetadata.0 _________________________________

StructMetadata.0	DFNT_CHAR8           32000
GROUP=SwathStructure
END_GROUP=SwathStructure
GROUP=GridStructure
	GROUP=GRID_1
		GridName="MODISRAD"
		XDim=240
		YDim=240
		UpperLeftPointMtrs=(-18903158.834333,1111950.519667)
		LowerRightMtrs=(-17791208.314667,0.000000)
		Projection=GCTP_SNSOID
		ProjParams=(6371007.181000,0,0,0,0,0,0,0,0,0,0,0,0)
		SphereCode=0
		GridOrigin=HDFE_GD_UL
		GROUP=Dimension
			OBJECT=Dimension_1
				DimensionName="Orbit Layers"
				Size=4
			END_OBJECT=Dimension_1
			OBJECT=Dimension_2
				DimensionName="YDim"
				Size=240
			END_OBJECT=Dimension_2
			OBJECT=Dimension_3
				DimensionName="XDim"
				Size=240
			END_OBJECT=Dimension_3
		END_GROUP=Dimension
		GROUP=DataField
			OBJECT=DataField_1
				DataFieldName="PAR"
				DataType=DFNT_FLOAT32
				DimList=("Orbit Layers","YDim","XDim")
			END_OBJECT=DataField_1
			OBJECT=DataField_2
				DataFieldName="Direct"
				DataType=DFNT_FLOAT32
				DimList=("Orbit Layers","YDim","XDim")
			END_OBJECT=DataField_2
			OBJECT=DataField_3
				DataFieldName="Diffuse"
				DataType=DFNT_FLOAT32
				DimList=("Orbit Layers","YDim","XDim")
			END_OBJECT=DataField_3
			OBJECT=DataField_4
				DataFieldName="GMT_0000_PAR"
				DataType=DFNT_FLOAT32
				DimList=("YDim","XDim")
			END_OBJECT=DataField_4
			OBJECT=DataField_5
				DataFieldName="GMT_0300_PAR"
				DataType=DFNT_FLOAT32
				DimList=("YDim","XDim")
			END_OBJECT=DataField_5
			OBJECT=DataField_6
				DataFieldName="GMT_0600_PAR"
				DataType=DFNT_FLOAT32
				DimList=("YDim","XDim")
			END_OBJECT=DataField_6
			OBJECT=DataField_7
				DataFieldName="GMT_0900_PAR"
				DataType=DFNT_FLOAT32
				DimList=("YDim","XDim")
			END_OBJECT=DataField_7
			OBJECT=DataField_8
				DataFieldName="GMT_1200_PAR"
				DataType=DFNT_FLOAT32
				DimList=("YDim","XDim")
			END_OBJECT=DataField_8
			OBJECT=DataField_9
				DataFieldName="GMT_1500_PAR"
				DataType=DFNT_FLOAT32
				DimList=("YDim","XDim")
			END_OBJECT=DataField_9
			OBJECT=DataField_10
				DataFieldName="GMT_1800_PAR"
				DataType=DFNT_FLOAT32
				DimList=("YDim","XDim")
			END_OBJECT=DataField_10
			OBJECT=DataField_11
				DataFieldName="GMT_2100_PAR"
				DataType=DFNT_FLOAT32
				DimList=("YDim","XDim")
			END_OBJECT=DataField_11
			OBJECT=DataField_12
				DataFieldName="ViewZenithAngle"
				DataType=DFNT_FLOAT32
				DimList=("Orbit Layers","YDim","XDim")
			END_OBJECT=DataField_12
		END_GROUP=DataField
		GROUP=MergedFields
		END_GROUP=MergedFields
	END_GROUP=GRID_1
END_GROUP=GridStructure
GROUP=PointStructure
END_GROUP=PointStructure
END

End StructMetadata.0 -----------------------------------

HDFEOSVersion                   DFNT_CHAR	1	PGE	Variable
Orbit_amount			DFNT_UINT32	1	PGE	Variable
Orbit_time_stamp		DFNT_CHAR	1	PGE	Variable

*End Global Attributes 
============================================================================

SDS Definitions:

SDS Name:      	PAR

Description:   	Daily instantaneous total Photosynthetically Active radiation for each orbit


Number Type:   DFNT_FLOAT32
Rank:          3
Dimension Sizes:    Variable, 240, 240 
Dimension Names:
	Dimension0: "Orbit Layers"
	Dimension1: "Ydim"
	Dimension2: "Xdim" 

SDS Attributes:
units			DFNT_CHAR       string length   PGE     "W/m2"
_FillValue		DFNT_FLOAT32      1             PGE     -1.0

============================================================================
SDS Definitions:

SDS Name:      	Direct

Description:   	Instantaneous direct Photosynthetically Active radiance for each orbit


Number Type:   DFNT_FLOAT32
Rank:          3
Dimension Sizes:    Variable, 240, 240 
Dimension Names:
	Dimension0: "Orbit Layers"
	Dimension1: "Ydim"
	Dimension2: "Xdim" 

SDS Attributes:
units			DFNT_CHAR       string length   PGE     "W/m2"
_FillValue		DFNT_FLOAT32      1             PGE     -1.0

============================================================================
SDS Definitions:

SDS Name:      	Diffuse

Description:   	Instantaneous diffuse Photosynthetically Active radiance for each orbit


Number Type:   DFNT_FLOAT32
Rank:          3
Dimension Sizes:    Variable, 240, 240 
Dimension Names:
	Dimension0: "Orbit Layers"
	Dimension1: "Ydim"
	Dimension2: "Xdim" 

SDS Attributes:
units			DFNT_CHAR       string length   PGE     "W/m2"
_FillValue		DFNT_FLOAT32      1             PGE     -1.0

============================================================================
SDS Definitions:

SDS Name:      	GMT_0000_PAR

Description:   	Daily 3 hrly total Photosynthetically Active radiation for time starting 0000


Number Type:   DFNT_FLOAT32
Rank:          2
Dimension Sizes:    240, 240 
Dimension Names:
	Dimension0: "Ydim"
	Dimension1: "Xdim" 

SDS Attributes:
units			DFNT_CHAR       string length   PGE     "W/m2"
_FillValue		DFNT_FLOAT32      1             PGE     -1.0

============================================================================
SDS Definitions:

SDS Name:      	GMT_0300_PAR

Description:   	Daily 3 hrly  total Photosynthetically Active radiation for time starting 0300


Number Type:   DFNT_FLOAT32
Rank:          2
Dimension Sizes:    240, 240 
Dimension Names:
	Dimension0: "Ydim"
	Dimension1: "Xdim" 

SDS Attributes:
units			DFNT_CHAR       string length   PGE     "W/m2"
_FillValue		DFNT_FLOAT32      1             PGE     -1.0

============================================================================
SDS Definitions:

SDS Name:      	GMT_0600_PAR

Description:   	Daily 3 hrly  total Photosynthetically Active radiation for time starting 0600


Number Type:   DFNT_FLOAT32
Rank:          2
Dimension Sizes:    240, 240 
Dimension Names:
	Dimension0: "Ydim"
	Dimension1: "Xdim" 

SDS Attributes:
units			DFNT_CHAR       string length   PGE     "W/m2"
_FillValue		DFNT_FLOAT32      1             PGE     -1.0

============================================================================
SDS Definitions:

SDS Name:      	GMT_0900_PAR

Description:   	Daily 3 hrly  total Photosynthetically Active radiation for time starting 0900


Number Type:   DFNT_FLOAT32
Rank:          2
Dimension Sizes:    240, 240 
Dimension Names:
	Dimension0: "Ydim"
	Dimension1: "Xdim" 

SDS Attributes:
units			DFNT_CHAR       string length   PGE     "W/m2"
_FillValue		DFNT_FLOAT32      1             PGE     -1.0

============================================================================
SDS Definitions:

SDS Name:      	GMT_1200_PAR

Description:   	Daily 3 hrly  total Photosynthetically Active radiation for time starting 1200


Number Type:   DFNT_FLOAT32
Rank:          2
Dimension Sizes:    240, 240 
Dimension Names:
	Dimension0: "Ydim"
	Dimension1: "Xdim" 

SDS Attributes:
units			DFNT_CHAR       string length   PGE     "W/m2"
_FillValue		DFNT_FLOAT32      1             PGE     -1.0

============================================================================
SDS Definitions:

SDS Name:      	GMT_1500_PAR

Description:   	Daily 3 hrly  total Photosynthetically Active radiation for time starting 1500


Number Type:   DFNT_FLOAT32
Rank:          2
Dimension Sizes:    240, 240 
Dimension Names:
	Dimension0: "Ydim"
	Dimension1: "Xdim" 

SDS Attributes:
units			DFNT_CHAR       string length   PGE     "W/m2"
_FillValue		DFNT_FLOAT32      1             PGE     -1.0

============================================================================
SDS Definitions:

SDS Name:      	GMT_1800_PAR

Description:   	Daily 3 hrly  total Photosynthetically Active radiation for time starting 1800


Number Type:   DFNT_FLOAT32
Rank:          2
Dimension Sizes:    240, 240 
Dimension Names:
	Dimension0: "Ydim"
	Dimension1: "Xdim" 

SDS Attributes:
units			DFNT_CHAR       string length   PGE     "W/m2"
_FillValue		DFNT_FLOAT32      1             PGE     -1.0

============================================================================
SDS Definitions:

SDS Name:      	GMT_2100_PAR

Description:   	Daily 3 hrly  total Photosynthetically Active radiation for time starting 2100


Number Type:   DFNT_FLOAT32
Rank:          2
Dimension Sizes:    240, 240 
Dimension Names:
	Dimension0: "Ydim"
	Dimension1: "Xdim" 

SDS Attributes:
units			DFNT_CHAR       string length   PGE     "W/m2"
_FillValue		DFNT_FLOAT32      1             PGE     -1.0

============================================================================
SDS Definitions:

SDS Name:      	ViewZenithAngle

Description:   	Daily view zenith angles for each orbit



Number Type:   DFNT_FLOAT32
Rank:          3
Dimension Sizes:    Variable, 240, 240 
Dimension Names:
	Dimension0: "Orbit Layers"
	Dimension1: "Ydim"
	Dimension2: "Xdim" 

SDS Attributes:
units			DFNT_CHAR       string length   PGE     "degrees"
_FillValue		DFNT_FLOAT32      1             PGE     -1.0

Last updated: June 2, 2020