MODIS (Terra, Aqua, Combined) Data Dictionary
The Data Dictionaries are a set of information describing the contents, format, and structure of elements for EarthExplorer products.
- Field Definition: The last day of data acquisition.
Format:
YYYY/MM/DD
- Field Definition: The first day of data acquisition.
Format:
YYYY/MM/DD
- Field Definition: Indicates whether or not the file was output properly from the production software.
Values:
Passed
Failed
- Field Definition: Description of the context in which an Automatic Quality Flag was assigned.
- Field Definition: Cloud Cover is the percentage of a scene that is obscured by clouds. It is an automatically generated value and is only an estimate.
Note: Not all MODIS datasets provide a cloud cover value.
- Field Definition: The latitude and longitude are provided in decimal degrees for the following fields:
Values:
Scene Center Latitude and Longitude
Northeast (NE) Corner Latitude and Longitude
Northwest (NW) Corner Latitude and Longitude
Southeast (SE) Corner Latitude and Longitude
Southwest (SW) Corner Latitude and Longitude
Latitude Format Decimal Degrees: -90.000 through 90.000
Longitude Format Decimal Degrees: -180.000 through 180.000
Number of decimal places will vary by dataset – check collection in EE.
Coordinates - Degrees, Minutes, Seconds
- Field Definition: The latitude and longitude are provided in degrees, minutes, and seconds for the following fields:
Values:
Scene Center Latitude and Longitude
Northeast (NE) Corner Latitude and Longitude
Northwest (NW) Corner Latitude and Longitude
Southeast (SE) Corner Latitude and Longitude
Southwest (SW) Corner Latitude and Longitude
Longitude Format:
DDDMMSS.SSH
DDD = Degree(s) with a range of 0 through 180
MM = Minute(s) with a range of 0 through 59
SS.SS = Second(s) with a range of 0 through 59.99
H = Hemisphere with E for east and W for west
Latitude Format:
DDMMSS.SSH
DD = Degree(s) with a range of 0 through 90
MM = Minutes(s) with a range of 0 through 59
SS.SS = Second(s) with a range of 0 through 59.99
H = Hemisphere with N for north and S for south
- Field Definition: The short name of the MODIS data product.
- Field Definition: The date the granule was entered into the EarthExplorer database.
- Field Definition: The Date Updated refers to the date the inventory record was last updated in the EarthExplorer database.
- Field Definition: This field indicates whether the data was collected during the day or night. If a collection granule is acquired along the day/night terminator line (sunrise or sunset), it is declared as "Both".
Values:
Day
Night
Both
All (Includes Day, Night, and Both)
- Field Definition: System that provides an infrastructure for the registration and persistent reference of a Digital Object Identifier. The DOI name can be entered into a DOI Authority system to view the associated URL for the product.
Example:
http://dx.doi.org or https://doi.org
- Field Definition: Digital Object Identifier is used to uniquely and permanently identify a dataset. The DOI name is more stable than a URL and is used as a permanent reference for the product. The DOI name can be entered into a DOI Authority system to view the associated URL for the product.
Example:
10.5067/MODIS/MOD11A1.006
- Field Definition: The naming convention of each file is based on the Local Granule ID. The Entity ID may match the Local Granule ID for some data sets.
Format:
Swath Format: PPPPPPPP.AYYYYDDD.HHMM.VVV
Grid Format: PPPPPPPP.AYYYYDDD.hTTvTT.VVV
Global Format: PPPPPPPP.AYYYYDDD.VVV
PPPPPPPP = Product Short Name
AYYYYDDD = Julian Date of Acquisition
HHMM = Hours & Minutes of Acquisition
hTT = Horizontal Tile Number
vTT = Vertical Tile Number
VVV = Version Number
Example
Swath Example: MOD11_L2.A2001001.0110.006
Grid Example: MOD09A1.A2014177.h02v06.006
Global Example: MYD11C3.A2004183.006
- Field Definition: Horizontal tile number of the 10º by 10º MODIS grid for the granule, which increases from left to right.
Values:
00 through 35
- Field Definition: The name of an individual file provided by LP DAAC.
Format:
Swath Format: PPPPPPPP.AYYYYDDD.HHMM.VVV.YYYYDDDHHMMSS.hdf
Grid Format: PPPPPPPP.AYYYYDDD.hTTvTT.VVV.YYYYDDDHHMMSS.hdf
Global Format: PPPPPPPP.AYYYYDDD.VVV.YYYYDDDHHMMSS.hdf
PPPPPPPP = Product Short Name
AYYYYDDD = Julian Date of Acquisition
HHMM = Hours & Minutes of Acquisition
hTT = Horizontal Tile Number
vTT = Vertical Tile Number
VVV = Version Number
YYYYDDDHHMMSS = Julian Date of Production
hdf = Data Format
Example
Swath Example: MOD11_L2.A2001001.0110.006.2015111152855.hdf
Grid Example: MOD09A1.A2014177.h02v06.006.2015288090229.hdf
Global Example: MYD11C3.A2004183.006.2015226212110.hdf
- Field Definition: The percentage of data in the final granule that is missing; made unusable by sensor noise, cloud cover, or other phenomena; or otherwise unusable.
- Field Definition: Version number of the Product Generation Algorithm used to create the file.
- Field Definition: Quality status assigned by the MODIS Land Science Team.
Values:
Passed
Inferred Passed
Failed
Inferred Failed
Suspect
Being Investigated
Not Investigated
Hold
Science Quality Flag Explanation
- Field Definition: Description of the context in which a Science Quality Flag was assigned.
Please use the updated URL at https://landweb.modaps.eosdis.nasa.gov/cgi-bin/QA_WWW/qaFlagPage.cgi?sa…
- Field Definition: The data version for the MODIS product.
- Field Definition: Vertical tile number of the 10º by 10º MODIS grid for the granule, which increases from top to bottom.
Values:
00 through 17
The Data Dictionaries are a set of information describing the contents, format, and structure of elements for EarthExplorer products.
- Field Definition: The last day of data acquisition.
Format:
YYYY/MM/DD
- Field Definition: The first day of data acquisition.
Format:
YYYY/MM/DD
- Field Definition: Indicates whether or not the file was output properly from the production software.
Values:
Passed
Failed
- Field Definition: Description of the context in which an Automatic Quality Flag was assigned.
- Field Definition: Cloud Cover is the percentage of a scene that is obscured by clouds. It is an automatically generated value and is only an estimate.
Note: Not all MODIS datasets provide a cloud cover value.
- Field Definition: The latitude and longitude are provided in decimal degrees for the following fields:
Values:
Scene Center Latitude and Longitude
Northeast (NE) Corner Latitude and Longitude
Northwest (NW) Corner Latitude and Longitude
Southeast (SE) Corner Latitude and Longitude
Southwest (SW) Corner Latitude and Longitude
Latitude Format Decimal Degrees: -90.000 through 90.000
Longitude Format Decimal Degrees: -180.000 through 180.000
Number of decimal places will vary by dataset – check collection in EE.
Coordinates - Degrees, Minutes, Seconds
- Field Definition: The latitude and longitude are provided in degrees, minutes, and seconds for the following fields:
Values:
Scene Center Latitude and Longitude
Northeast (NE) Corner Latitude and Longitude
Northwest (NW) Corner Latitude and Longitude
Southeast (SE) Corner Latitude and Longitude
Southwest (SW) Corner Latitude and Longitude
Longitude Format:
DDDMMSS.SSH
DDD = Degree(s) with a range of 0 through 180
MM = Minute(s) with a range of 0 through 59
SS.SS = Second(s) with a range of 0 through 59.99
H = Hemisphere with E for east and W for west
Latitude Format:
DDMMSS.SSH
DD = Degree(s) with a range of 0 through 90
MM = Minutes(s) with a range of 0 through 59
SS.SS = Second(s) with a range of 0 through 59.99
H = Hemisphere with N for north and S for south
- Field Definition: The short name of the MODIS data product.
- Field Definition: The date the granule was entered into the EarthExplorer database.
- Field Definition: The Date Updated refers to the date the inventory record was last updated in the EarthExplorer database.
- Field Definition: This field indicates whether the data was collected during the day or night. If a collection granule is acquired along the day/night terminator line (sunrise or sunset), it is declared as "Both".
Values:
Day
Night
Both
All (Includes Day, Night, and Both)
- Field Definition: System that provides an infrastructure for the registration and persistent reference of a Digital Object Identifier. The DOI name can be entered into a DOI Authority system to view the associated URL for the product.
Example:
http://dx.doi.org or https://doi.org
- Field Definition: Digital Object Identifier is used to uniquely and permanently identify a dataset. The DOI name is more stable than a URL and is used as a permanent reference for the product. The DOI name can be entered into a DOI Authority system to view the associated URL for the product.
Example:
10.5067/MODIS/MOD11A1.006
- Field Definition: The naming convention of each file is based on the Local Granule ID. The Entity ID may match the Local Granule ID for some data sets.
Format:
Swath Format: PPPPPPPP.AYYYYDDD.HHMM.VVV
Grid Format: PPPPPPPP.AYYYYDDD.hTTvTT.VVV
Global Format: PPPPPPPP.AYYYYDDD.VVV
PPPPPPPP = Product Short Name
AYYYYDDD = Julian Date of Acquisition
HHMM = Hours & Minutes of Acquisition
hTT = Horizontal Tile Number
vTT = Vertical Tile Number
VVV = Version Number
Example
Swath Example: MOD11_L2.A2001001.0110.006
Grid Example: MOD09A1.A2014177.h02v06.006
Global Example: MYD11C3.A2004183.006
- Field Definition: Horizontal tile number of the 10º by 10º MODIS grid for the granule, which increases from left to right.
Values:
00 through 35
- Field Definition: The name of an individual file provided by LP DAAC.
Format:
Swath Format: PPPPPPPP.AYYYYDDD.HHMM.VVV.YYYYDDDHHMMSS.hdf
Grid Format: PPPPPPPP.AYYYYDDD.hTTvTT.VVV.YYYYDDDHHMMSS.hdf
Global Format: PPPPPPPP.AYYYYDDD.VVV.YYYYDDDHHMMSS.hdf
PPPPPPPP = Product Short Name
AYYYYDDD = Julian Date of Acquisition
HHMM = Hours & Minutes of Acquisition
hTT = Horizontal Tile Number
vTT = Vertical Tile Number
VVV = Version Number
YYYYDDDHHMMSS = Julian Date of Production
hdf = Data Format
Example
Swath Example: MOD11_L2.A2001001.0110.006.2015111152855.hdf
Grid Example: MOD09A1.A2014177.h02v06.006.2015288090229.hdf
Global Example: MYD11C3.A2004183.006.2015226212110.hdf
- Field Definition: The percentage of data in the final granule that is missing; made unusable by sensor noise, cloud cover, or other phenomena; or otherwise unusable.
- Field Definition: Version number of the Product Generation Algorithm used to create the file.
- Field Definition: Quality status assigned by the MODIS Land Science Team.
Values:
Passed
Inferred Passed
Failed
Inferred Failed
Suspect
Being Investigated
Not Investigated
Hold
Science Quality Flag Explanation
- Field Definition: Description of the context in which a Science Quality Flag was assigned.
Please use the updated URL at https://landweb.modaps.eosdis.nasa.gov/cgi-bin/QA_WWW/qaFlagPage.cgi?sa…
- Field Definition: The data version for the MODIS product.
- Field Definition: Vertical tile number of the 10º by 10º MODIS grid for the granule, which increases from top to bottom.
Values:
00 through 17