MOD11C1 v061

MODIS/Terra Land Surface Temperature/Emissivity Daily L3 Global 0.05 Deg CMG


PI: Zhengming Wan

Description

The MOD11C1 Version 6.1 product provides daily Land Surface Temperature and Emissivity (LST&E) values in a 0.05 degree (5,600 meters at the equator) latitude/longitude Climate Modeling Grid (CMG). The MOD11C1 product is directly derived from the MOD11B1 product. A CMG granule follows a Geographic grid, having 7,200 columns and 3,600 rows, which represent the entire globe. Each MOD11C1 product consists of the following layers for daytime and nighttime observations: LSTs, quality control assessments, observation times, view zenith angles, number of clear-sky observations, and emissivities from bands 20, 22, 23, 29, 31, and 32 (bands 31 and 32 are daytime only) along with the percentage of land in the grid.

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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).

Product Maturity

Validation at stage 2 has been achieved for all MODIS Land Surface Temperature and Emissivity products. Further details regarding MODIS land product validation for the MOD11 data products are available from the MODIS Land Team Validation site.

Collection and Granule

Collection

Characteristic Description
CollectionTerra MODIS
DOI10.5067/MODIS/MOD11C1.061
File Size~36.86 MB
Temporal ResolutionDaily
Temporal Extent2000-02-24 to Present
Spatial ExtentGlobal
Coordinate SystemGeographic Latitude and Longitude
DatumN/A
File FormatHDF-EOS
Geographic DimensionsGlobal

Granule

Characteristic Description
Number of Science Dataset (SDS) Layers21
Columns/Rows7200 x 3600
Pixel Size5600 m

Layers

SDS Name Description Units Data Type Fill Value No Data Value Valid Range Scale Factor Additional Offset
LST_Day_CMG Day Land Surface Temperature Kelvin 16-bit unsigned integer 0 N/A 7500 to 65535 0.02 N/A
QC_Day Daytime LST Quality Indicators Bit Field 8-bit unsigned integer N/A N/A 0 to 255 N/A N/A
Day_view_time Local time of day observation Hours 8-bit unsigned integer 255 N/A 0 to 120 0.2 N/A
Day_view_angl View zenith angle of day observation Degree 8-bit unsigned integer 255 N/A 0 to 130 N/A -65
LST_Night_CMG Night Land Surface Temperature Kelvin 16-bit unsigned integer 0 N/A 7500 to 65535 0.02 N/A
QC_Night Nighttime LST Quality indicators Bit Field 8-bit unsigned integer N/A N/A 0 to 255 N/A N/A
Night_view_time Local time of night observation Hours 8-bit unsigned integer 255 N/A 0 to 120 0.2 N/A
Night_view_angl View zenith angle of night observation Degree 8-bit unsigned integer 255 N/A 0 to 130 N/A -65
Emis_20 Band 20 emissivity N/A 8-bit unsigned integer 0 N/A 1to 255 0.002 0.49
Emis_22 Band 22 emissivity N/A 8-bit unsigned integer 0 N/A 1 to 255 0.002 0.49
Emis_23 Band 23 emissivity N/A 8-bit unsigned integer 0 N/A 1 to 255 0.002 0.49
Emis_29 Band 29 emissivity N/A 8-bit unsigned integer 0 N/A 1 to 255 0.002 0.49
Emis_31 Band 31 emissivity N/A 8-bit unsigned integer 0 N/A 1 to 255 0.002 0.49
Emis_32 Band 32 emissivity N/A 8-bit unsigned integer 0 N/A 1 to 255 0.002 0.49
Emis_20_night Nighttime Band 20 emissivity N/A 8-bit unsigned integer 0 N/A 1 to 255 0.002 0.49
Emis_22_night Nighttime Band 22 emissivity N/A 8-bit unsigned integer 0 N/A 1 to 255 0.002 0.49
Emis_23_night Nighttime Band 23 emissivity N/A 8-bit unsigned integer 0 N/A 1 to 255 0.002 0.49
Emis_29_night Nighttime Band 29 emissivity N/A 8-bit unsigned integer 0 N/A 1 to 255 0.002 0.49
QC_emis Daytime emissivity quality indicators Bit Field 8-bit unsigned integer N/A N/A 0 to 255 N/A N/A
QC_Emis_night Nighttime emissivity quality indicators Bit Field 8-bit unsigned integer N/A N/A 0 to 255 N/A N/A
Percent_land_in_grid Percentage of land in the grid Percent 8-bit unsigned integer 0 N/A 1 to 100 N/A N/A

Product Quality

The Quality Control (QC) layers are stored in an efficient bit-encoded manner. The unpack_sds_bits executable from the LDOPE Tools is available to the user community to help parse and interpret the QC layers.

The QA bit flags for the QC layers are provided in Table 20 of the User Guide.

Known Issues

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

Documentation

Using the Data

Access Data

Citation

DOI: 10.5067/MODIS/MOD11C1.061

About the Image

Terra MODIS daytime land surface temperature data from the MOD11C1 product across the globe, September 10, 2020.

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