LEOLSTCMG30 v001

Low Earth Orbit Land Surface Temperature Monthly Global Gridded


PI: Glynn Hulley

Description

The NASA Making Earth System Data Records for Use in Research Environments (MEaSUREs) LEOLSTCMG30 version 1 Climate Modeling Grid (CMG) product provides Land Surface Temperature (LST) derived from the Low Earth Orbit (LEO) satellite data record from the Moderate Resolution Imaging Spectroradiometer (MODIS) and Visible Infrared Imaging Radiometer Suite (VIIRS) instruments as well as LST error estimates for both day and night. The product will include global LST produced on CMG at monthly timesteps from 2002 to present. The MEaSUREs LEOLST product is generated by regridding the monthly LST CMG products from MODIS (MYD21C3.061) and VIIRS (VNP21C3.002).

The product will be available on 0.25, 0.5, and 1 degree optimized climate grids with well characterized per-pixel uncertainties. A low-resolution browse is also available showing LST as an RGB (red, green, blue) image in PNG format.

read more

Characteristics

Collection and Granule

Collection

Characteristic Description
CollectionMEaSUREs LSTE
DOI10.5067/MEaSUREs/LSTE/LEOLSTCMG30.001
File Size~15 MB
Temporal ResolutionMonthly
Temporal Extent2002-08-01 to Present
Spatial ExtentGlobal
Coordinate SystemGeographic Latitude and Longitude
DatumWorld Geodetic System (WGS84)
File FormatHDF-EOS5
Geographic DimensionsGlobal

Granule

Characteristic Description
Number of Science Dataset (SDS) Layers14
Columns/RowsVaries
Pixel SizeVaries

Layers / Variables

SDS Name Description Units Data Type Fill Value No Data Value Valid Range Scale Factor
LST_Day_ODG One Degree Gridded Daytime Land Surface Temperature Kelvin 16-bit signed integer 0 N/A 7500 to 65535 0.02
LST_Day_err_ODG One Degree Gridded Daytime Land Surface Temperature Error Kelvin 8-bit unsigned integer 0 N/A 1 to 255 0.04
LST_Night_ODG One Degree Gridded Nighttime Land Surface Temperature Kelvin 16-bit signed integer 0 N/A 7500 to 65535 0.02
LST_Night_err_ODG One Degree Gridded Nighttime Land Surface Temperature Error Kelvin 8-bit unsigned integer 0 N/A 1 to 255 0.04
LST_Day_HDG Half Degree Gridded Daytime Land Surface Temperature Kelvin 16-bit signed integer 0 N/A 7500 to 65535 0.02
LST_Day_err_HDG Half Degree Gridded Daytime Land Surface Temperature Error Kelvin 8-bit unsigned integer 0 N/A 1 to 255 0.04
LST_Night_HDG Half Degree Gridded Nighttime Land Surface Temperature Kelvin 16-bit signed integer 0 N/A 7500 to 65535 0.02
LST_Night_err_HDG Half Degree Gridded Nighttime Land Surface Temperature Error Kelvin 8-bit unsigned integer 0 N/A 1 to 255 0.04
LST_Day_QDG Quarter Degree Gridded Daytime Land Surface Temperature Kelvin 16-bit signed integer 0 N/A 7500 to 65535 0.02
LST_Day_err_QDG Quarter Degree Gridded Daytime Land Surface Temperature Error Kelvin 8-bit unsigned integer 0 N/A 1 to 255 0.04
LST_Night_QDG Quarter Degree Gridded Nighttime Land Surface Temperature Kelvin 16-bit signed integer 0 N/A 7500 to 65535 0.02
LST_Night_err_QDG Quarter Degree Gridded Nighttime Land Surface Temperature Error Kelvin 8-bit unsigned integer 0 N/A 1 to 255 0.04
Lat Latitude Degree 32-bit floating point -999 -999 -90 to 90 N/A
Lon Longitude Degree 32-bit floating point -999 -999 -180 to 180 N/A

Product Quality

Uncertainty information can be found in Section 2.4 of the User Guide.

Known Issues

Users should be aware that in v001 of the Low Earth Orbit Land Surface Temperature Monthly Global Gridded product (LEOLSTCMG30) the nighttime LST error estimates (LST_Night_err_*) in the one degree, half degree, and quarter degree SDS layers were erroneously filled with zero values, and should not be used for any scientific data analyses.


About the image

Global daytime LST from the LEOLSTCMG30 product during December 2020.

View full-size image

Documentation

User Guide and Algorithm Theoretical Basis Document (ATBD)

Using the Data

Access Data

Citation

DOI: 10.5067/MEaSUREs/LSTE/LEOLSTCMG30.001