MCD12Q1 v061

MODIS/Terra+Aqua Land Cover Type Yearly L3 Global 500 m SIN Grid


PI: Damien Sulla-Menashe and Mark Friedl

Description

The Terra and Aqua combined Moderate Resolution Imaging Spectroradiometer (MODIS) Land Cover Type (MCD12Q1) Version 6.1 data product provides global land cover types at yearly intervals (2001-2022). The MCD12Q1 Version 6.1 data product is derived using supervised classifications of MODIS Terra and Aqua reflectance data. Land cover types are derived from the International Geosphere-Biosphere Programme (IGBP), University of Maryland (UMD), Leaf Area Index (LAI), BIOME-Biogeochemical Cycles (BGC), and Plant Functional Types (PFT) classification schemes. The supervised classifications then undergo additional post-processing that incorporate prior knowledge and ancillary information to further refine specific classes. Additional land cover property assessment layers are provided by the Food and Agriculture Organization (FAO) Land Cover Classification System (LCCS) for land cover, land use, and surface hydrology.

Layers for Land Cover Type 1-5, Land Cover Property 1-3, Land Cover Property Assessment 1-3, Land Cover Quality Control (QC), and a Land Water Mask are provided in each MCD12Q1 Version 6.1 Hierarchical Data Format 4 (HDF4) file.

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Characteristics

Improvements/Changes from Previous Versions

  • The Version 6.1 Level-1B (L1B) products have been improved by undergoing various calibration changes that include: changes to the response-versus-scan angle (RVS) approach that affects reflectance bands for Aqua and Terra MODIS, corrections to adjust for the optical crosstalk in Terra MODIS infrared (IR) bands, and corrections to the Terra MODIS forward look-up table (LUT) update for the period 2012 - 2017.
  • A polarization correction has been applied to the L1B Reflective Solar Bands (RSB).
  • The MCD12Q1 Version 6.1 product has a minor correction to the UMD Land Cover Class.

Product Maturity

Validation at stage 2 has been achieved for the MODIS Land Cover products. Further details regarding MODIS land product validation for the MCD12 data products are available from the MODIS Land Team Validation site.

Collection and Granule

Collection

Characteristic Description
CollectionCombined MODIS
DOI10.5067/MODIS/MCD12Q1.061
File Size~15 MB
Temporal ResolutionYearly
Temporal Extent2001-01-01 to 2022-12-31
Spatial ExtentGlobal
Coordinate SystemSinusoidal
DatumN/A
File FormatHDF-EOS
Geographic Dimensions1200 km x 1200 km

Granule

Characteristic Description
Number of Science Dataset (SDS) Layers13
Columns/Rows2400 x 2400
Pixel Size500 m

Layers / Variables

SDS Name Description Units Data Type Fill Value No Data Value Valid Range Scale Factor
LC_Type1 Land Cover Type 1: Annual International Geosphere-Biosphere Programme (IGBP) classification Class 8-bit unsigned integer 255 N/A 1 to 17 N/A
LC_Type2 Land Cover Type 2: Annual University of Maryland (UMD) classification Class 8-bit unsigned integer 255 N/A 0 to 15 N/A
LC_Type3 Land Cover Type 3: Annual Leaf Area Index (LAI) classification Class 8-bit unsigned integer 255 N/A 0 to 10 N/A
LC_Type4 Land Cover Type 4: Annual BIOME-Biogeochemical Cycles (BGC) classification Class 8-bit unsigned integer 255 N/A 0 to 8 N/A
LC_Type5 Land Cover Type 5: Annual Plant Functional Types classification Class 8-bit unsigned integer 255 N/A 0 to 11 N/A
LC_Prop1 FAO-Land Cover Classification System 1 (LCCS1) land cover layer Class 8-bit unsigned integer 255 N/A 1 to 43 N/A
LC_Prop2 FAO-LCCS2 land use layer Class 8-bit unsigned integer 255 N/A 1 to 40 N/A
LC_Prop3 FAO-LCCS3 surface hydrology layer Class 8-bit unsigned integer 255 N/A 1 to 51 N/A
LC_Prop1_Assessment LCCS1 land cover layer confidence Percent 8-bit unsigned integer 255 N/A 0 to 100 N/A
LC_Prop2_Assessment LCCS2 land use layer confidence Percent 8-bit unsigned integer 255 N/A 0 to 100 N/A
LC_Prop3_Assessment LCCS3 surface hydrology layer confidence Percent 8-bit unsigned integer 255 N/A 0 to 100 N/A
QC Product quality flags Quality Flag 8-bit unsigned integer 255 N/A 0 to 10 N/A
LW Binary land (class 2) / water (class 1) mask derived from MOD44W Class 8-bit unsigned integer 255 N/A 1 to 2 N/A

Product Quality

Quality information is provided in Table 11 of the User Guide.

Known Issues

The "units" field is missing in the metadata, however, this information can be found in Table 1 of the User Guide.

Known issues are described in Section 2.2 of the User Guide.

For complete information about known issues please refer to the MODIS/VIIRS Land Quality Assessment website.


About the image

Combined MODIS IGBP data from the MCD12Q1 product over southwestern Asia, 2020.

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Documentation

User Guide
Algorithm Theoretical Basis Document (ATBD)
File Specification

Using the Data

Access Data

Citation

DOI: 10.5067/MODIS/MCD12Q1.061