MOD11_L2 v061

MODIS/Terra Land Surface Temperature/Emissivity 5-Minute L2 Swath 1 km


PI: Zhengming Wan

Description

The MOD11_L2 Version 6.1 swath product provides per-pixel Land Surface Temperature and Emissivity (LST&E) with a pixel size of 1,000 meters (m). The product is produced daily in 5-minute temporal increments of satellite acquisition using the generalized split-window algorithm. MOD11_L2 is a Level 2 product which provides the input for the Level 3 products. Provided in each MOD11_L2 file are LST, quality control assessment, error estimates, bands 31 and 32 emissivities, zenith angle of the pixel view, observation time, and the geographic coordinates for every five scan lines and samples.

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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/MOD11_L2.061
File Size~2.4 MB
Temporal Resolution< Daily
Temporal Extent2000-02-24 to Present
Spatial ExtentGlobal
Coordinate SystemNone (Swath)
DatumN/A
File FormatHDF-EOS
Geographic Dimensions2330 km x 2000 km

Granule

Characteristic Description
Number of Science Dataset (SDS) Layers9
Columns/Rows2030 x 1354
Pixel Size1000 m

Layers

SDS Name Description Units Data Type Fill Value No Data Value Valid Range Scale Factor Additional Offset
LST Land Surface Temperature Kelvin 16-bit unsigned integer 0 N/A 7500 to 65535 0.02 N/A
QC Quality control for daytime LST and emissivity Bit Field 16-bit unsigned integer N/A N/A 0 to 65535 N/A N/A
Error_LST Land Surface Temperature Error Kelvin 8-bit unsigned integer 0 N/A 1 to 255 0.04 N/A
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
View_angle Zenith angle of MODIS viewing at the pixel Degree 8-bit unsigned integer 255 N/A 0 to 180 0.5 N/A
View_time Local time of pixel observation Hours 8-bit unsigned integer 255 N/A 0 to 240 0.1 N/A
Latitude Latitude of every 5 scan lines and 5 pixels Degree 32-bit floating point -999 N/A -90 to 90 N/A N/A
Longitude Longitude of every 5 scan lines and 5 pixels Degree 32-bit floating point -999 N/A -180 to 180 N/A N/A

Product Quality

The Quality Control (QC) layer is 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 layer.

The QA bit flags for the QC layers are provided in the User Guide in Table 8.

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/MOD11_L2.061

About the Image

Terra MODIS land surface temperature data from the MOD11_L2 product over Tibet, July 8, 2020.

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