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The goal of the MODIS Land Product Subsets project is to provide summaries of selected MODIS Land Products for the community to use for validation of models and remote-sensing products and to characterize field sites.

You may download MODIS Sinusoidal Grid (KMZ) or get more information about the formats and subsets offered by clicking the tabs below.

MODIS Land Subset Products Offered

Detailed information about file naming conventions, QC information, and file formats is provided in the product links. Information on all MODIS Land products may be found at the Land Processes DAAC.

Product Acronym Name Frequency (Days) Resolution (Meter)
MCD12Q1 LC MODIS/Terra+Aqua Land Cover (LC) Type Yearly L3 Global 500m SIN Grid annual 500
MCD12Q2 LCD MODIS/Terra+Aqua Land Cover Dynamics (LCD) Yearly L3 Global 500m SIN Grid annual 500
MCD43A1 BRDF MODIS/Terra+Aqua BRDF/Albedo (BRDF/MCD43A1) 16-Day L3 Global 500m SIN Grid 16 500
MCD43A2 BRDF/QA MODIS/Terra+Aqua BRDF/Model Quality (BRDF/MCD43A2) 16-Day L3 Global 500m SIN Grid V005 16 500
MCD43A4 NBAR MODIS/Terra+Aqua Nadir BRDF-Adjusted Reflectance (NBAR) 16-Day L3 Global 500m SIN Grid 16 500
MOD09A1 SREF MODIS/Terra Surface Reflectance (SREF) 8-Day L3 Global 500m SIN Grid 8 500
MOD11A2 TEMP MODIS/Terra Land Surface Temperature/Emissivity (LST) 8-Day L3 Global 1km SIN Grid 8 1000
MOD13Q1 NDVI/EVI MODIS/Terra Vegetation Indices (NDVI/EVI) 16-Day L3 Global 250m SIN Grid [Collection 5] 16 250
MOD15A2 LAI/FPAR Leaf Area Index (LAI) and Fraction of Photosynthetically Active Radiation (FPAR) 8-Day Composite [Collection 5] 8 1000
MOD16A2 ET MODIS/Terra Evapotranspiration (ET) 8-Day L4 Global Collection 5 8 1000
MOD17A2 GPP MODIS/Terra Gross Primary Production (GPP) 8-Day L4 Global [Collection 5.1] 8 1000
MOD17A3 NPP MODIS/Terra Net Primary Production (NPP) Yearly L4 Global 1km SIN Grid annual 1000
MYD09A1 SREF MODIS/Aqua Surface Reflectance (SREF) 8-Day L3 Global 500m SIN Grid 8 500
MYD11A2 TEMP MODIS/Aqua Land Surface Temperature/Emissivity (LST)8-Day L3 Global 1km SIN Grid 8 1000
MYD13Q1 NDVI/EVI MODIS/Aqua Vegetation Indices (NDVI/EVI) 16-Day L3 Global 1km SIN Grid 16 250
MYD15A2 LAI/FPAR MODIS/Aqua Leaf Area Index (LAI) and Fraction of Photosynthetically Active Radiation (FPAR) 8 Day Composite 8 1000
MYD17A2 GPP MODIS/Aqua Gross Primary Production (GPP) 8 Day L4 Global 8 1000

File Formats

MODIS Product Subsets Output Data File Format Descriptions.


MODIS Land Product Data (CSV)

Description of File

File Content: Data as read from MODIS Land Product HDF-EOS data files. These data are the starting point for deriving the other subset data products.

Data Type: As indicated by Land Product Code (e.g., MOD15A2).

Data Format:

  • ASCII values are comma delimited.
  • Data values start in row 1. There is no header row.
  • Rows of QC data are interleaved with measurement data as indicated in Column 6.
  • Note that values may contain embedded periods, dashes, and underscores (".,-, _").
Column Number Column Description Example Values
1 Unique row identifier MOD15A2.A2000057.h12v03.004.2002357024124.FparExtra_QC

MOD15A2.A2000057.h12v03.004.2002357024124.Lai_1km

2 MODIS Land Product Code MOD15A2
3 MODIS Acquisition Date [ A (YYYYDDD) ] A2000057
4 User selected center point coordinates and specified width (Samp) and height (Line) of bounding rectangle in pixels. Width x height denotes number of Product values starting in Column 7. (e.g., 7 x 7 = 49) Lat55.879620Lon-98.480810Samp7Line7
5 MODIS Processing Date (YYYYDDDHHMMSS) 2002357024124
6 Product Scientific Data Set (Band): Indicates type of values to follow. Specific values vary by Product. Data quality information are interleaved. MOD15A2: FparExtra_QC, FparLai_QC, Fpar_1km

MOD17A2: Gpp_1km, PsnNet_1km, Psn_QC_1km

7 to N Data values of type as specified. Number of data columns as given in Column 4.

Definition of QC component values vary by Scientific Data Set.

QC: 00100001,01100001,01100001, …

Measurement: 2,2,1,1,1,1,1,0,0,0,1,1,0,0, …to N

Data Quality: Measurement values have not been scaled or filtered based on QC criteria.

Example Output Data File: MODIS Land Product Data (CSV)

MOD13A2.A2000049.h11v04.004.2002356235225.1_km_16_days_EVI,MOD13A2,A2000049,
Lat45.805927Lon-90.079859Samp7Line7,2002356235225,1_km_16_days_EVI,2072,2886,2459,
2056,2529,2370,1910,3067,2575,2428,2525,2092,1554,1351,2639,1850,1774,1626,1497,1605,
2356,1521,1389,1434,1446,1640,2006,2767,1838,1662,1596,1603,1624,2101,2869,1604,1561,
1702,1821,1999,2362,2499,1942,1821,2012,2357,2665,2438,2234

MOD13A2.A2000049.h11v04.004.2002356235225.1_km_16_days_EVI_Quality,MOD13A2,A2000049,
Lat45.805927Lon-90.079859Samp7Line7,2002356235225,1_km_16_days_EVI_Quality,
1001100010001101,1001100001001000,1001100001001000,1001100010001101,1001100010001101,
1001100010001101,1001100001001100,1001100010001101,1001100010001101,1001100010001101,
1001100010001101,1001100010001101,1001100010001101,1001100010001101,1001100010001101,
1001100010001101,1001100010001101,1001100001001100,1001100001001100,1001100010001101,
1001100010001101,1001100010001101,1001100001001100,1001100001001100,1001100001001100,
1001100001001100,1001100001001100,1001100001001100,1001100001001100,1001100001001100,
1001100001001100,1001100001001100,1001100001001100,1001100001001100,1001100001001100,
1001100001001100,1001100001001100,1001100001001100,1001100001001100,1001100001001100,
1001100001001100,1001100001001100,1001100001001100,1001100001001100,1001100001001100,
1001100001001100,1001100001001100,1001100001001100,1001100001001100

MOD13A2.A2000049.h11v04.004.2002356235225.1_km_16_days_NDVI,MOD13A2,A2000049,
Lat45.805927Lon-90.079859Samp7Line7,2002356235225,1_km_16_days_NDVI,5318,6300,6702,5775,
6659,6430,4535,7109,6821,6980,5994,4640,2846,2169,6571,4315,3844,4157,3633,2530,4740,
3283,3427,3541,3496,3870,4921,6773,4319,3896,3697,3703,3755,5021,7209,3751,3765,4140,
4456,5053,5802,5840,4761,4683,5165,6335,6838,5690,4932

...

Data Users, please note that blank lines have been inserted between extensively wrapped data lines for clarity in this example. There are no blank lines in the actual data files.


Image Data Files in ASCII Grid Format

Description of File

A general description of ASCII Grid Format has been provided. For assistance with importing ASCII Grid format data files into common GIS packages, please refer to ASCII_Grid_GIS_Help.pdf .

File Content: Image Data Files in ASCII Grid Format

Data Users, please note that there are two file header formats for this data product.

Header for Output Files when Center Pixel Lat/Lon coordinates were specified:

  • Header Row 1: Title of Project.
  • Header Row 2: The MODIS Land Product
  • Header Row 3: Center point of requested location.
  • Header Row 4: Spatial extent of requested location.
  • Header Row 5: Temporal extent of request.
  • Header Rows 6 and 7: Links to projection (sinusoidal coordinate system) files for the ASCII Grid formatted data.
  • Header Row 8: Blank
  • Data Header Row 1: MODIS HDF source file for center pixel of requested location.
  • Data Header Row: 2: Blank
  • Data Header Row 3: -----START Scientific Data
  • Data Rows in ASCII Grid Format
  • Data Footer Row: -----END Scientific Data Set
    • *Data section repeats for each MODIS Product over the requested temporal extent.

Header for Output Files when a Field Site was specified:

  • Header Row 1: Title of Project.
  • Header Row 2: The MODIS Land Product
  • Header Row 3: Site Name selected from Field Site Picklist.
  • Header Row 4: Center point of requested location.
  • Header Row 5: Spatial extent of requested location.
  • Header Row 6: Temporal extent of request.
  • Header Rows 7 and 8: Links to projection (sinusoidal coordinate system) files for the ASCII Grid formatted data.
  • Header Row 9: Blank
  • Data Header Row 1: MODIS HDF source file for center pixel of requested location.
  • Data Header Row: 2: Blank
  • Data Header Row 3: -----START Scientific Data Set
  • Data Row 1 to Data Row N
  • Data Footer Row: -----END Scientific Data Set
    • *Data section repeats for each MODIS Product over the requested temporal extent.

Data Quality: Measurement values have not been scaled or filtered based on QC criteria.

Example Output Data File:  Image Data Files in ASCII Grid Format

Type 1:  Output file when Center Pixel Lat/Lon coordinates were specified and data rows are in ASCII Grid format

MODIS ASCII Subsets: Data Visualization
[MOD15A2] Terra Leaf Area Index / Fraction of Photosynthetically Active Radiation (LAI/FPAR) 
Centered on Latitude [19.3589] Longitude [-99.0735]
51 Kilometers [51 Pixels] Wide and 51 Kilometers [51 Pixels] High 
Requested Time Span February 2000 to February 2006
For a PRJ file, access  https://daac.ornl.gov/cgi-bin/MODIS/GR_common/modis.prj
For a prj.adf file, access  https://daac.ornl.gov/cgi-bin/MODIS/GR_common/prj.adf

MODIS HDF Tile      MOD15A2.A2000057.h08v07.004.2002357012731.hdf

-----START Scientific Data Set (Band): Lai_1km, MODIS Date: A2000057 (Feb. 26, 2000)-----
ncols 51
nrows 51
xllcorner -10417123.10
yllcorner 2129385.25
cellsize 926.62543305583381
nodata_value -9999999
7 6 5 5 8 2 3 3 5 6 7 10 10 7 7 6 7 3 3 2 2 4 9 4 5 5 5 5 6 6 8 7 5 4 9 12 7 5 5 6 3 2 2 2

6 2 2 1 254 254 254
6 6 10 2 2 1 15 7 2 11 5 8 7 10 8 8 4 3 2 3 5 6 5 5 5 3 6 6 5 7 6 3 3 5 15 10 7 4 3 6 2 3 3 

2 5 4 2 2 2 2 2
6 12 13 10 12 12 17 1 3 3 1 11 8 6 6 5 3 3 3 3 5 3 5 4 3 4 5 3 5 4 2 3 4 7 6 5 3 3 3 4 3 3 2 

3 2 3 4 2 254 2 3
3 24 22 27 11 11 1 10 12 7 6 6 8 10 6 3 3 4 3 2 3 3 3 2 2 2 3 2 3 4 3 4 3 3 6 3 3 3 3 4 5 2 3

2 2 3 254 254 254 254 254

...

-----END Scientific Data Set (Band): Lai_1km, MODIS Date: A2000057 (Feb. 26, 2000)-----
  

Data section in ASCII Grid format bounded by "-----START... to -----END..." repeats for each MODIS Product over the requested temporal extent.

Type 2:  Output file when a Field Site was specified and data rows are in ASCII Grid format

MODIS ASCII Subsets: Data Visualization
[MYD09A1] Aqua Surface Reflectance 
USA, Chestnut Ridge, Oak Ridge, Tennessee
Centered on Latitude [35.931093] Longitude [-84.332424]
Approximately 51 Kilometers [101 Pixels] Wide and 51 Kilometers [101 Pixels] High 
Requested Time Span February 2004 to January 2006
For a PRJ file, access  https://daac.ornl.gov/cgi-bin/MODIS/GR_common/modis.prj
For a prj.adf file, access  https://daac.ornl.gov/cgi-bin/MODIS/GR_common/prj.adf

MOSIS HDF Tile      MYD09A1.A2004033.h11v05.004.2004045015330.hdf

-----START Scientific Data Set (Band): sur_refl_b01, MODIS Date: A2004033 (Feb. 2, 2004)-----
ncols 101
nrows 101
xllcorner -7449141.84
yllcorner 3496157.80
cellsize 463.312716528
nodata_value -9999999
624 572 423 423 455 906 989 1181 710 816 793 793 803 867 823 676 681 596 685 685 741 689 717 1244 
880 649 512 512 569 514 572 642 793 810 810 681 799 806 643 648 603 733 733 809 718 470 409 409 711 
443 443 881 881 875 871 769 686 1040 816 816 664 667 667 783 904 856 1121 1121 1160 1106 911 1244 
1256 1164 1164 478 856 751 688 557 369 369 347 489 489 813 1065 839 793 636 636 452 632 632 470 
685 501 501 421 421 634
639 572 537 890 697 945 795 795 710 504 454 824 1094 836 676 712 579 579 1011 943 750 783 768 776 
776 741 762 891 605 460 547 613 613 799 1017 967 808 860 804 710 710 853 787 588 424 471 471 427 
671 741 697 697 1056 768 768 1098 1110 894 816 596 624 624 1000 967 904 837 799 1102 1022 997 997 
1027 768 737 373 565 565 433 489 489 441 395 395 493 794 794 857 954 1103 636 928 1062 1062 760 
760 685 534 687 687 1130 1278
...

-----END Scientific Data Set (Band): sur_refl_b01, MODIS Date: A2004033 (Feb. 2, 2004)-----

Data section in ASCII Grid format bounded by "-----START... to -----END..." repeats for each MODIS Product over the requested temporal extent.

QC-Filtered Data and Statistics Generated for this Request

Description of File

File Content: QC-Filtered Data and Statistics Generated for this Request

Data Users, please note that there are two file header formats for this data product.

Header for Output Files when Center Pixel Lat/Lon coordinates were specified:

  • Header Row 1: Title of Project.
  • Header Row 2: The MODIS Land Product
  • Header Row 3: Center point of requested location.
  • Header Row 4: Spatial extent of requested location.
  • Header Row 5: Temporal extent of request.

Header for Output Files when a Field Site was specified:

  • Header Row 1: Title of Project.
  • Header Row 2: The MODIS Land Product
  • Header Row 3: Site Name selected from Field Site Picklist.
  • Header Row 4: Center point of requested location.
  • Header Row 5: Spatial extent of requested location.
  • Header Row 6: Temporal extent of request.

Summary and Data repeat for each Land Product temporal composite.

QC and Statistical Summary:

  • Summary Row 1: MODIS HDF source file for center pixel of requested location.
  • Summary Row 2: Scientific Data Set (Band) of the MODIS Land Product given in the second Header Row
  • Summary Row 3: Number of Values Passing QC filters for this Scientific Data Set.
  • Summary Row 4: Scale Factor and Mean and Standard Deviation of values with scale factor applied.
  • Summary Row 5: Mean and Standard Deviation of unscaled raw values (scale factor not applied).

Data Format:

  • ASCII text file with comma separated values.
  • Values that did not pass QC filters have been replaced with "FILTER" code value.

Data Quality: Measurement values have been filtered based on QC criteria but have not been scaled. Scale factor is given in Summary Row 8.

Example Output Data File: QC-Filtered Data and Statistics Generated for this Request

Type 1:  Output file when Center Pixel Lat/Lon coordinates were specified -- there are 5 file header rows.

MODIS ASCII Subsets: Data Visualization
[MOD15A2] Terra Leaf Area Index / Fraction of Photosynthetically Active Radiation (LAI/FPAR) 
Centered on Latitude [19.3589] Longitude [-99.0735]
51 Kilometers [51 Pixels] Wide and 51 Kilometers [51 Pixels] High 
Requested Time Span February 2000 to February 2006
MODIS HDF Tile        MOD15A2.A2000057.h08v07.004.2002357012731.hdf
Scientific Data Set (Band)    Lai_1km
Number of Values Passing QA Filter  1910 of 2601
Applying the Scale of 0.1   MEAN: 0.580104712041885,  STD-DEV: 0.530466543179959 
Unscaled        MEAN: 5.80104712041885, STD-DEV: 5.30466543179959
  FILTER,6,5,5,8,2,3,3,5,6,7,10,10,7,FILTER,6,7,3,3,2,2,4,9,4,5,5,5,5,6,6,8,7,5,4,FILTER,12,7,5,
        5,6,3,2,2,2,6,2,2,1,FILTER,FILTER,FILTER,
  6,6,FILTER,2,2,1,15,7,2,11,FILTER,8,7,10,8,8,4,3,2,3,5,6,5,5,5,3,6,6,5,7,6,3,3,5,15,10,7,4,3,
        6,2,3,3,2,5,4,2,FILTER,2,2,2,
  6,FILTER,FILTER,FILTER,FILTER,FILTER,17,1,3,3,1,11,8,6,6,5,3,3,3,3,5,3,5,4,3,4,5,3,5,4,2,3,4,
        7,6,5,3,3,3,4,3,3,2,3,2,3,4,2,FILTER,2,3,
  
        ...

        4,5,6,7,7,7,22,16,16,16,20,7,9,12,12,9,10,10,9,8,8,11,18,12,16,27,14,10,7,7,7,9,8,6,6,5,4,5,7,11,25,
        30,15,8,7,6,7,14,28,43,41,
  6,3,6,8,6,8,5,13,13,23,30,12,25,15,12,11,9,10,9,11,10,9,8,9,33,25,11,7,5,7,8,8,7,5,5,3,5,3,
        4,11,44,36,12,7,6,5,6,8,20,42,FILTER
MODIS HDF Tile        MOD15A2.A2001017.h08v07.004.2003079160847.hdf
Scientific Data Set (Band)    Lai_1km
Number of Values Passing QA Filter  1963 of 2601
Applying the Scale of 0.1   MEAN: 0.715944982170148,  STD-DEV: 0.633835779394783 
Unscaled        MEAN: 7.15944982170148, STD-DEV: 6.33835779394783
  18,11,6,6,13,24,35,31,17,7,11,14,15,9,12,8,8,5,4,2,3,4,8,5,3,3,5,6,7,7,10,8,5,5,13,11,6,5,4,
        4,3,3,5,3,7,3,3,2,FILTER,FILTER,FILTER,
  10,11,19,18,37,38,30,7,13,14,20,16,9,14,10,14,8,5,4,5,5,7,7,5,5,4,10,6,5,8,6,3,3,5,16,8,5,3,
        3,5,2,2,2,2,6,5,3,1,2,3,3,

        ...

Summary Rows, starting with the "MODIS HDF Tile" row, and data rows repeat for each MODIS Product over the requested temporal extent.

Type 2:  Output file when a Field Site was specified  -- there are 6 file header rows.

MODIS ASCII Subsets: Data Visualization
[MOD13A2] Terra Vegetation Indices (NDVI, EVI) 
USA, Willow Creek, Wisconsin
Centered on Latitude [45.805927] Longitude [-90.079859]
7 Kilometers [7 Pixels] Wide and 7 Kilometers [7 Pixels] High 
Requested Time Span February 2000 to July 2005

MOSIS HDF Tile        MOD13A2.A2000049.h11v04.004.2002356235225.hdf
Scientific Data Set (Band)    1_km_16_days_NDVI
Number of Values Passing QA Filter  49 of 49
Applying the Scale of 0.0001    MEAN: 0.490183673469388,  STD-DEV: 0.131969692480677 
Unscaled        MEAN: 4901.83673469388, STD-DEV: 1319.69692480677
  5318,6300,6702,5775,6659,6430,4535,
  7109,6821,6980,5994,4640,2846,2169,
  6571,4315,3844,4157,3633,2530,4740,
  3283,3427,3541,3496,3870,4921,6773,
  4319,3896,3697,3703,3755,5021,7209,
  3751,3765,4140,4456,5053,5802,5840,
  4761,4683,5165,6335,6838,5690,4932

MOSIS HDF Tile        MOD13A2.A2000065.h11v04.004.2002363094802.hdf
Scientific Data Set (Band)    1_km_16_days_NDVI
Number of Values Passing QA Filter  49 of 49
Applying the Scale of 0.0001    MEAN: 0.470736734693878,  STD-DEV: 0.0809588449085683 
Unscaled        MEAN: 4707.36734693878, STD-DEV: 809.588449085683
  4611,5451,5381,4831,5694,4827,4069,
  6017,5896,5966,5720,4747,3961,3857,
  5909,4775,4327,3785,3632,3892,5403,
  3867,3637,3759,3691,3959,4785,6044,
  4339,4316,3991,4093,3822,4630,6344,
  4139,4132,4208,4388,4817,5419,5448,
  5099,4548,4652,5547,6169,3281,4786

Summary Rows, starting with the "MODIS HDF Tile" row, and data rows repeat for each MODIS Product over the requested temporal extent.

Land Cover Data in ASCII Grid Format

Description of File

File Content: Land Cover image data in ASCII Grid Format.

A general description of ASCII Grid Format is provided.

Note that this file contains Land Cover data for both the user requested location and spatial extent and the system generated 201 x 201 km area centered on the requested location.

Header for Output Files:

  • Header Row 1: Collection 4 IGBP Type_1 Land Cover
  • Header Row 2: Center point of requested location.
  • Header Row 3: Spatial extent of requested location.
  • Header Row 4: Temporal extent of request.
  • Header Row 5: Blank
  • Header Rows 6 and 7: Links to projection (sinusoidal coordinate system) files for the ASCII Grid formatted data.
  • Header Row 8: Blank
  • Data Header Row 1: MODIS HDF source file for center pixel of requested location.
  • Data Header Row: 2: Blank
  • Data Header Row 3: -----START Scientific Data
  • Data Rows in ASCII Grid Format
  • Data Footer Row: -----END Scientific Data Set

Data Format:

  • ASCII Grid Format. See description.

Data Quality: These data are Collection 4 IGBP Type_1 Land Cover and were derived from MODIS Products acquired on Jan. 1, 2001 and processed on May 29, 2004.

Example Output Data File:  Land Cover Data in ASCII Grid Format

Collection 4 IGBP Type_1 Land Cover
Centered on Latitude [55.879620] Longitude [-98.480810]
User Selected 7 Kilometers [7 Pixels] Wide and 7 Kilometers [7 Pixels] High 
and 201 Kilometers [201 Pixels] Wide and 201 Kilometers [201 Pixels] High Reference Grid
 
For a PRJ file, access  https://daac.ornl.gov/cgi-bin/MODIS/GR_common/modis.prj
For a prj.adf file, access  https://daac.ornl.gov/cgi-bin/MODIS/GR_common/prj.adf

MODIS HDF Tile      MOD12Q1.A2001001.h12v03.004.2004149203245.hdf

-----START Scientific Data Set (Band): Land_Cover_Type_1, MODIS Date: A2001001 (Jan. 1, 2001)-----
ncols 7
nrows 7
xllcorner -6145379.84
yllcorner 6210243.65
cellsize 926.62543305583381
nodata_value -9999999
1 1 1 1 1 1 1
1 1 1 1 1 1 1
1 1 1 1 1 1 1
1 1 1 1 1 1 1
1 1 1 1 1 1 1
8 1 8 7 7 1 8
1 1 7 9 9 1 1
-----END Scientific Data Set (Band): Land_Cover_Type_1, MODIS Date: A2001001 (Jan. 1, 2001)-----

For a PRJ file, access  https://daac.ornl.gov/cgi-bin/MODIS/GR_common/modis.prj
For a prj.adf file, access  https://daac.ornl.gov/cgi-bin/MODIS/GR_common/prj.adf

MODIS HDF Tile      MOD12Q1.A2001001.h12v03.004.2004149203245.hdf

-----START Scientific Data Set (Band): Land_Cover_Type_1, MODIS Date: A2001001 (Jan. 1, 2001)-----
ncols 201
nrows 201
xllcorner -6235262.50
yllcorner 6120361.02
cellsize 926.62543305583381
nodata_value -9999999
0 0 8 8 8 8 1 8 1 1 8 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 1 9 9 1 1 1 1 1 1 1 1 7 7 7 7 7 7 10 
7 7 7 7 7 1 1 1 1 1 1 7 7 1 1 1 1 1 1 1 1 1 1 8 1 1 7 7 8 1 1 1 1 8 1 1 1 1 1 1 1 1 1 7 1 1 1 1 1 
1 1 8 1 10 10 1 10 10 1 1 1 1 1 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 1 1 0 0 0 0 1 1 1 1 1 1 
1 1 1 1 1 1 1 1 8 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 1 
1 1 1 1 1 1 1 1
8 1 1 1 1 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 7 1 7 1 7 7 1 1 0 1 1 7 0 10 1 1 7 7 7 7 7 
7 7 1 1 1 1 1 10 1 7 7 1 1 1 1 1 1 1 1 1 1 1 1 7 10 7 1 7 1 1 1 3 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 
1 1 8 7 10 7 1 1 1 7 10 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 1 1 1 1 1 1 8 1 1 1 1 1 1 1 1 
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 10 0 1 1 1 1 1 1 1 1 1 1 1 1 8 1 1 1 1 1 1 1 1 
1 1 1 1 1 1 1 1
1 1 1 8 1 1 1 8 1 1 1 1 1 1 1 1 1 1 1 1 1 7 1 1 1 1 0 7 9 10 7 9 7 0 0 0 7 7 0 0 7 7 7 7 7 7 1 1 
1 1 7 8 1 7 7 7 1 7 7 1 1 1 1 1 7 7 0 1 1 0 0 0 7 11 0 7 7 8 1 1 1 8 8 1 1 1 1 1 1 1 1 1 1 1 1 1 
7 1 10 10 1 1 1 10 10 7 7 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 10 1 1 1 1 8 1 1 1 1 1 
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 
1 1 1 1 1 1 1 1 1 1 1

...

-----END Scientific Data Set (Band): Land_Cover_Type_1, MODIS Date: A2001001 (Jan. 1, 2001)-----

Data sections, bounded by "-----START... to -----END...", are in ASCII Grid format.

Statistical Data for MODIS Land Products in Comma Separated Format

Description of File

File Content: This file contains statistical summaries for the requested MODIS Land Product over the specified spatial and temporal extents.

  • Summary statistics were calculated only for values passing all quality filtering criteria.
  • The first summary table was calculated on a subset of values based on having the same land cover class as the center pixel of the requested area.
  • The second table includes all values regardless of land cover.
  • This pair of tables is reported for each Scientific Data Set composite image available for the requested time period.

Data Users, please note that there are two file header formats for this data product.

Header for Output Files when Center Pixel Lat/Lon coordinates were specified:

  • Header Row 1: Title of Project.
  • Header Row 2: The MODIS Land Product
  • Header Row 3: Center point of requested location.
  • Header Row 4: Spatial extent of requested location.
  • Header Row 5: Temporal extent of request.

Header for Output Files when a Field Site was specified:

  • Header Row 1: Title of Project.
  • Header Row 2: The MODIS Land Product
  • Header Row 3: Site Name selected from Field Site Picklist.
  • Header Row 4: Center point of requested location.
  • Header Row 5: Spatial extent of requested location.
  • Header Row 6: Temporal extent of request.

Data Format:

Two summary tables are provided for each Scientific Data Set reported:

  • The first, "Statistics for Pixels with the same Land Cover Class as the Center Pixel Passing Quality Filter [Scaled Values]".
  • The second, "Statistics for Pixels Passing Quality Filter [Scaled Values]". Land cover was not considered.

All values have been scaled by the scale factor reported in the "QC-Filtered Data and Statistics Generated for this Request" output product.

There is a header row with column names. See table for expanded description.

  • date[YYYYDDD],product,band,stddev,mode,mean,median,min,max,range,sum,variance,tot_pixels,pixels_pass_qa,

per_cent_pixels_pass_qa

Values are comma delimited.

Expanded Descriptions of Summary Table Column Headings

  • Data Users, please note that the number of pixels included in the calculations (Columns 13-15) differ between the two summary tables because of land cover class subsetting.
Column Number Column Heading Description
1 date[YYYYDDD] MODIS acquisition date. Four digit year and three digit day of year
2 product Selected MODIS Land Product
3 band Scientific Data Set. Refers to a specific wavelength range measured by the MODIS sensor (e.g., Band 1, 620-670 nm) or to a specific product derived from several measured bands (e.g., MOD15A2 with Lai_1km and Fpar_1km, and MOD09A1 with sur_refl_b01, sur_refl_b02 … sur_refl_b09)
4 stddev Standard deviation
5 mode Mode
6 mean Mean
7 median Median
8 min Minimum
9 max Maximum
10 range Range
11 sum Sum
12 variance Variance
"Statistics for Pixels with the same Land Cover Class as the Center Pixel Passing Quality Filter [Scaled Values]"
13 tot_pixels Total number of pixels in the requested area having the same land cover class as the center pixel.
14 pixels_pass_qa Number of pixels in the requested area having the same land cover as the center pixel and passing quality filters.
15 per_cent_pixels_pass_qa Number of pixels with same land cover as the center pixel and acceptable quality in the requested area. / Total number of pixels having the same land cover class as the center pixel. *100
"Statistics for Pixels Passing Quality Filter [Scaled Values]"
13 tot_pixels Total number of pixels in the requested area.
14 pixels_pass_qa Number of pixels in the requested area passing quality filters.
15 per_cent_pixels_pass_qa Number of pixels with acceptable quality in the requested area. / Total number of pixels. *100

Data Quality: Measurement values have been scaled and filtered based on QC criteria.

Example Output Data File:  QC-Filtered Data and Statistics Generated for this Request

MODIS ASCII Subsets: Data Visualization
[MOD15A2] Terra Leaf Area Index / Fraction of Photosynthetically Active Radiation (LAI/FPAR) 
Centered on Latitude [19.3589] Longitude [-99.0735]
51 Kilometers [51 Pixels] Wide and 51 Kilometers [51 Pixels] High 
Requested Time Span February 2000 to February 2006

Statistics for Pixels with the same Land Cover Class as the Center Pixel Passing Quality Filter 


                  [Scaled Values]
date[YYYYDDD],product,band,stddev,mode,mean,median,min,max,range,sum,variance,tot_pixels,

pixels_pass_qa,per_cent_pixels_pass_qa
2000057,MOD15A2,Lai_1km,0.2228,0.3000,0.4382,0.4000,0.1000,1.8000,1.7000,423.3000,0.0496,1516,

966,63.72
2000065,MOD15A2,Lai_1km,0.2705,0.3000,0.5373,0.5000,0.1000,1.6000,1.5000,520.1000,0.0732,1516,

968,63.85
...
 

                  Statistics for Pixels Passing Quality Filter [Scaled Values]
date[YYYYDDD],product,band,stddev,mode,mean,median,min,max,range,sum,variance,tot_pixels,

pixels_pass_qa,per_cent_pixels_pass_qa
2000057,MOD15A2,Lai_1km,0.5305,0.3000,0.5801,0.5000,0.1000,5.9000,5.8000,1108.0000,0.2814,2601,

1910,73.43
2000065,MOD15A2,Lai_1km,0.5873,0.6000,0.6831,0.6000,0.1000,5.8000,5.7000,1321.1000,0.3449,2601,

1934,74.36
...

This pair of tables is reported for each Scientific Data Set composite image available for the requested time period.

Underlying BRDF Parameters Used in Generating this Request (available with Albedo MOD43B and MCD43B only)

Description of File

File Content: Data as read from MODIS Land Product HDF-EOS data files.

Data Type: As indicated by Land Product Code.

Data Format :

  • ASCII values are comma delimited.
  • Data values start in row 1. There is no header row.
  • Rows of QC data are mixed with measurement data as indicated in Column 6.
  • Note that values may contain embedded periods, dashes, and underscores (".,-, _").
Column Number Column Description Example Values
1 Unique row identifier MOD43B1.A2002001.h11v04.004.2003188191303.BRDF_Albedo_Parameters.

Num_Land_Bands_Plus3_08.Num_Parameters_01

2 MODIS Land Product Code MOD43B1
3 MODIS Acquisition Date [ A (YYYYDDD) ] A2002001
4 User selected center point coordinates and specified width (Samp) and height (Line) of bounding rectangle in pixels. Width x height denotes number of Product values starting in Column 7. (e.g., 7 x 7 = 49) Lat45.945878Lon-90.272304Samp101Line101
5 MODIS Processing Date (YYYYDDDHHMMSS) 2003188191303
6 Product Scientific Data Set (Band): Indicates type of values to follow. Specific values vary by Product. BRDF_Albedo_Parameters.Num_Land_Bands_Plus3_08.Num_Parameters_01
7 to N Data values of type as specified. Number of data columns as given in Column 4.

Definition of QC component values vary by Scientific Data Set.

221

Data Quality: Measurement values have not been scaled or filtered based on QC criteria.

Example Output Data File:  Underlying BRDF Parameters Used in Generating this Request

MCD43B1.A2002273.h11v05.004.2004205192108.BRDF_Albedo_Parameters.Num_Land_Bands_Plus3_08.Num_Parameters_01,

MCD43B1,A2002273,Lat35.958767Lon-84.287433Samp101Line101,2004205192108,

BRDF_Albedo_Parameters.Num_Land_Bands_Plus3_08.Num_Parameters_01,45,43,37,33,32,35,37,40,46,49,41,33,30,29,

36,30,24,25,32,30,29,25,31,31,28,37,33,34,30,28,30,36,44,41,37,41,46,45,43,39,35,31,34,32,30,33,38,37,32,

35,46,47,34,31,30,29,27,29,31,30,33,36,37,36,38,38,35,33,35,35,33,31,30,30,30,30,35,34,35,33,29,27,33,40,

41,37,40,41,37,36,29,24,26,28,25,30,28,31,48,33,24,40,35,30,30,33,29,27,34,40,33,28,30,28,29,35,32,33,33,

32,30,30,33,29,28,29,33,29,27,29,31,35,45,39,37,35,33,37,40,40,38,30,29,33,36,40,39,36,37,38,41,45,37,31,

30,31,34,32,33,34,32,34,35,35,36,37,33,39,36,30,32,32,29,29,29,28,29,31,33,32,28,26,28,29,37,39,38,38,30,

... 

MCD43B1.A2002273.h11v05.004.2004205192108.BRDF_Albedo_Parameters.Num_Land_Bands_Plus3_08.Num_Parameters_03,

MCD43B1,A2002273,Lat35.958767Lon-84.287433Samp101Line101,2004205192108,

BRDF_Albedo_Parameters.Num_Land_Bands_Plus3_08.Num_Parameters_03,9,9,8,7,7,7,8,9,10,10,9,7,6,6,8,6,5,5,

7,6,6,2,7,6,6,8,7,7,6,6,6,8,9,9,8,9,10,9,9,8,7,6,7,7,6,7,8,8,7,7,10,10,7,7,6,6,6,6,7,6,7,8,8,8,8,8,7,7,

7,8,7,7,6,6,6,6,7,7,7,7,6,6,7,8,9,8,8,9,8,8,6,5,5,6,5,6,6,7,10,7,5,9,7,6,6,7,6,6,7,8,7,6,6,6,6,7,7,7,7,

,6,6,7,6,6,6,7,6,6,6,6,7,9,8,8,7,7,8,8,8,8,6,6,7,8,8,8,8,8,8,9,10,8,7,6,7,7,7,7,7,7,7,7,7,8,8,7,8,8,6,7,

...

Data Users, please note that blank lines have been inserted between extensively wrapped and truncated data lines for clarity in this example. There are no blank lines in the actual data files.


Aggregate 500m Land Cover(MCD12Q1) to 1km

For the Global subsetting tool, we provide two summaries of data: one is a summary for all pixels in the selected area and the other is the summary for all pixels with the same land cover class as the center pixel (the pixel that contains the field site or flux tower).

In collection 5, the land cover(MCD12Q1) is available at 500m . To obtain a summary of pixels in the selected area with the same land cover class at 1km resolution, the 500m pixels are aggregated to 1km pixels. Below is an image showing the 500m land cover for a 7 x 7 km subset region. The example subset region has a center pixel of   "(1) Evergreen Needleef Forest".

7x7_500m

The aggregation from 500m to 1km pixel is done by identifying 1km pixels that have 2 or more 500m pixels having the same land cover class as the 1km center pixel. Below is a 1km landcover image showing the aggregation. The black pixels cells are pixels that did not satisfy the aggregation criteria.

7x7_1km

Below is a composite image showing the 500m landcover pixels with the aggregated 1-km pixels. The darker regions are 1km pixels that did not satisfy the aggregation criteria.

7x7_500m_1km_aggregate

Method Used to Calculate Albedo from MCD43A1 (MODIS Albedo Model Parameter)

Albedo MCD43A

The ALBEDO data are based on the Terra and Aqua(Combined) MODIS BRDF / Albedo Model Parameter Product (MCD43A1). The primary BRDF model parameters from MCD43A1 are used in the following equations to calculate Black-sky, white-sky, and actual (blue-sky) albedo. We have used a solar zenith angle (szn) equal to local solar noon and an optical depth of 0.2 as default values in calculating these data files.



Black-sky Albedo = Parameters_01 + Parameters_02 * (-0.007574 + (-0.070987 * szn2) + (0.307588 * szn3)) + Parameters_03 * (-1.284909 + (-0.166314 * szn2) + (0.041840 * szn3))

White-sky Albedo = Parameters_01 + Parameters_02 * (0.189184) + Parameters_03 * (-1.377622)

Blue-sky (Actual) Albedo = White-sky Albedo * f(optical depth, solar zenith angle, aerosol type, band) + Black-sky Albedo * (1 - f(optical depth, solar zenith angle, aerosol type, band))

where
Parameters_01 corresponds to the MCD43A1 band "BRDF_Albedo_Parameters_nn.Num_Parameters_01",

Parameters_02 corresponds to the MCD43A1 band "BRDF_Albedo_Parameters_nn.Num_Parameters_02",

Parameters_03 corresponds to the MCD43A1 band "BRDF_Albedo_Parameters_nn.Num_Parameters_03"

for nn=vis (Band_08 Visible Broadband), nn=nir (Band_09 Near Infrared Broadand) and nn=shortwave (Band_10 Shortwave Broadband)

Additional information can be found on the LP DAAC Web site:
https://lpdaac.usgs.gov/dataset_discovery/modis/modis_products_table/mcd43a1

and at the BRDF Science Team Web site:
http://www-modis.bu.edu/brdf/userguide/index.html

MODIS Product Subsets Output Data File Format and Visualization Descriptions

MODIS Land Product ASCII Data

Description of File

File Content: Data as read from MODIS Land Product HDF-EOS data files. These data are the starting point for deriving the other subset data products.

Data Type: As indicated by Land Product Code (e.g., MOD15A2).

Data Format:

  • ASCII values are comma delimited
  • Row 1 is the header row
  • Data values start in row 2.
  • Rows of QC data are interleaved with measurement data as indicated in Column 6.
  • Note that values may contain embedded periods, dashes, and underscores (".,-, _").
Column Number Column Description Example Values
1 Unique row identifier MOD13Q1.A2000049.fn_ustnwalk.005.2006269073558.250m_16_days_NDVI

MOD13Q1.A2000049.fn_ustnwalk.005.2006269073558.250m_16_days_EVI

2 MODIS Land Product Code MOD13Q1
3 MODIS Acquisition Date

 [A(YYYYDDD) ]

A2000049
4 SiteID

Each site is assigned a unique ID.

fn_ustnwalk
5 MODIS Processing Date (YYYYDDDHHMMSS) 2006269073558
6 Product Scientific Data Set (Band): Indicates type of values to follow. Specific values vary by Product. Data quality information are interleaved. MOD13Q1: 250m_16_days_VI_Quality

MOD17A2: Gpp_1km, PsnNet_1km, Psn_QC_1km

7 to N Data values of type as specified. Number of data columns as given in Column 4.

Definition of QC component values vary by Scientific Data Set.

QC: 00100001,01100001,01100001,

Measurement: 2,2,1,1,1,1,1,0,0,0,1,1,0,0, to N

Data Quality: Measurement values have not been scaled or filtered based on QC criteria.

MODIS Land Product GeoTIFF Data

Description of File: A general description of GeoTIFF file format can be found at http://www.gdal.org/frmt_gtiff.html .

File Content: Data as read from MODIS Land Product HDF-EOS data files. These data are the starting point for deriving the other subset data products.

Data Type: As indicated by Land Product Code (e.g., MOD15A2).

Data Format:

  • Multi band GeoTIFF
  • Sinusoidal Projection .
  • One file per product per site per composite period
  • Rows of QC data are interleaved with measurement data

Data Quality: Measurement values have not been scaled or filtered based on QC criteria.

Please Note: GeoTIFFs are delivered through the ORNL DAAC website in zip file bundles.