HDF-EOS MODIS Vegetation Continuous Fields File Specification
Version: V6.0
Revision: 0
Date: October 31, 2011
Product Ident: MODIS/Terra Vegetation Continuous Fields Yearly L3 Global 250m
SIN Grid
Product Identifiers:
Description:
The MOD44B product contains global vegetation continuous fields, a global
representation of the Earth's surface as gradations of three components of
ground cover: percent tree cover, percent non-tree vegetation and percent
bare, with each of the three components expressed as a percentage of ground
cover.
Point of Contact:
Charlene DiMiceli
Dept. of Geography, 1106 Lefrak Hall
University of Maryland
College Park, MD 20472
(301)314-2584
cdimicel@umd.edu
Name: Type: Num_Val: Value:
CoreMetadata.0 HDF-STRING 1
LocalGranuleID STRING 1 Variable
ProductionDateTime DATETIME 1 Variable
DayNightFlag STRING 1 Variable
ReprocessingActual STRING 1 Variable
ReprocessingPlanned STRING 1 Variable
AutomaticQualityFlagExplanation STRING 1 Variable
AutomaticQualityFlag STRING 1 Variable
OperationalQualityFlagExplanation STRING 1 Variable
OperationalQualityFlag STRING 1 Variable
QAPercentMissingData INTEGER 1 Variable
QAPercentOutofBoundsData INTEGER 1 Variable
QAPercentCloudCover INTEGER 1 Variable
QAPercentInterpolatedData INTEGER 1 Variable
ParameterName STRING 1 "MODIS/Terra Vegetation Continuous Fields Yearly L3 Global 250m SIN Grid"
EquatorCrossingDate DATE 1 Variable
EquatorCrossingTime TIME 1 Variable
EquatorCrossingLongitude DOUBLE 1 Variable
OrbitNumber INTEGER 1 Variable
VersionID INTEGER 1 Variable
ShortName STRING 1 "MOD44B"
InputPointer STRING 500 Variable
GRingPointLongitude DOUBLE 4 Variable
GRingPointLatitude DOUBLE 4 Variable
GRingPointSequenceNo INTEGER 4 Variable
ExclusionGRingFlag STRING 1 Variable
RangeEndingDate DATE 1 Variable
RangeEndingTime TIME 1 Variable
RangeBeginningDate DATE 1 Variable
RangeBeginningTime TIME 1 Variable
PGEVersion STRING 1 Variable
AncillaryInputPointer STRING 1 Variable
AncillaryInputType STRING 1 Variable
AssociatedSensorShortName STRING 1 "CCD"
AssociatedPlatformShortName STRING 1 "AM-1"
AssociatedInstrumentShortName STRING 1 "MODIS"
AdditionalAttributeName STRING 7
ADDITIONALATTRIBUTENAME.1 = "QAPERCENTGOODQUALITY"
ADDITIONALATTRIBUTENAME.2 = "QAPERCENTOTHERQUALITY"
ADDITIONALATTRIBUTENAME.3 = "QAPERCENTNOTPRODUCEDCLOUD"
ADDITIONALATTRIBUTENAME.4 = "QAPERCENTNOTPRODUCEDOTHER"
ADDITIONALATTRIBUTENAME.5 = "HORIZONTALTILENUMBER"
ADDITIONALATTRIBUTENAME.6 = "VERTICALTILENUMBER"
ADDITIONALATTRIBUTENAME.7 = "TileID"
ParameterValue STRING 7 Variable
ArchiveMetadata.0
WestBoundingCoordinate DOUBLE 1 Variable
NorthBoundingCoordinate DOUBLE 1 Variable
EastBoundingCoordinate DOUBLE 1 Variable
SouthBoundingCoordinate DOUBLE 1 Variable
AlgorithmPackageAcceptanceDate STRING 1 Variable
AlgorithmPackageMaturityCode STRING 1 Variable
AlgorithmPackageName STRING 1 Variable
AlgorithmPackageVersion STRING 1 Variable
LongName STRING 1 "MODIS/Terra Vegetation Continuous Fields Yearly L3 Global 250m SIN Grid"
LocalInputGranuleID STRING 500 Variable
char8 StructMetadata.0 = {
GridName = "MOD44B_250m_GRID"
Dimensions:
XDim = 4800
YDim = 4800
ZDim = 4
UpperLeftPointMtrs = (Varies, Varies)
LowerRightMtrs = (Varies, Varies)
Projection = GCTP_SINUS
ProjParams = (6371007.181000, 0, 0, 0, 0, 0, 0, 0, 21600, 0, 1, 0, 0)
SphereCode = -1
GridOrigin = HDFE_GD_UL
DataFields: type name(dimensions)
byte Percent_Tree_Cover(YDim_MOD44B_250m_GRID, XDim_MOD44B_250m_GRID)
byte Quality(YDim_MOD44B_250m_GRID, XDim_MOD44B_250m_GRID)
short Percent_Tree_Cover_SD(YDim_MOD44B_250m_GRID, XDim_MOD44B_250m_GR
ID) ;
byte Cloud(YDim_MOD44B_250m_GRID, XDim_MOD44B_250m_GRID)
----------------------------------------------------------------------
SDSs contained in this product:
byte Percent_Tree_Cover(YDim_MOD44B_250m_GRID, XDim_MOD44B_250m_GRID)
Description:
The percent tree canopy coverage contained in a pixel. Trees are
defined at woody vegetation greater than 5 meters tall.
units NA
valid range 0-100, 200 (water)
fill value 253 (interrupted space)
byte Cloud(YDim_MOD44B_250m_GRID, XDim_MOD44B_250m_GRID)
Description:
This is a bitfield with each bit representing 3 (2 in the case of the
end of year) 16-day MOD44C input composites. If the bit is 1 there was
no cloud-free observation during the time period. The leftmost bit
represents the beginning of the year (years start on day 65 for this
product).
units NA
valid range 0-255
fill value 0
byte Quality(YDim_MOD44B_250m_GRID, XDim_MOD44B_250m_GRID)i
Description:
This is a bitfield with each bit representing 3 (2 in the case of the
end of year) 16-day MOD44C input composites. If the bit is 1 there was
no good-quality observation during the time period. The leftmost bit
represents the beginning of the year (years start on day 65 for this
product). Quality assessments include cloud, aerosol, and low-light
conditions.
units NA
valid range 0-255
fill value 0
short Percent_Tree_Cover_SD(YDim_MOD44B_250m_GRID, XDim_MOD44B_250m_GRID)
Description:
Each Percent_Tree_Value is the mean of the predictions from 30 bagged
regression tree models. The values in this SDS are the standard
deviations of these 30 predictions. This value indicates the agreement
between the 30 models and is an indicator of the quality of the mean
prediction.
units NA
valid range 0-MAX_SHORT
fill value -100 (This value indicates that the Percent_Tree_Cover
data for this pixel was not derived from the
regression models, but was estimated from another
source; see User's Guide)