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Description

The Terra Moderate Resolution Imaging Spectroradiometer (MODIS) Land Surface Temperature/Emissivity Daily (MOD11A1) Version 6.1 product provides daily per-pixel Land Surface Temperature and Emissivity (LST&E) with 1 kilometer (km) spatial resolution in a 1,200 by 1,200 km grid. The pixel temperature value is derived from the MOD11_L2 swath product. Above 30 degrees latitude, some pixels may have multiple observations where the criteria for clear-sky are met. When this occurs, the pixel value is a result of the average of all qualifying observations. Provided along with the daytime and nighttime surface temperature bands are associated quality control assessments, observation times, view zenith angles, and clear-sky coverages along with bands 31 and 32 emissivities from land cover types.

Known Issues

Version Description

The following changes and improvements were implemented for inputs to MODIS Version 6.1 land surface temperature and emissivity data products: (1) 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, and (2) A polarization correction has been applied to the L1B Reflective Solar Bands (RSB).

Product Summary

Platforms
Terra
Instruments
MODIS
Spatial Extent

N: 90 S: -90 E: 180 W: -180

Spatial Resolution
1000 Meters x 1000 Meters
Geographic Region
GLOBAL
Coordinate System
CARTESIAN
Granule Spatial Representation
GEODETIC
Temporal Extent
2000-02-24 to Present
Temporal Resolution
1 Day
Data Partner
Land Processes Distributed Active Archive Center (LP DAAC) ,
MODIS Adaptive Processing System, Terrestrial Information Systems Laboratory, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA (NASA/GSFC/SED/ESD/TISL/MODAPS)
Concept ID
C1748058432-LPCLOUD
Data State
ACTIVE
Number of Files/Granules
2955011
Processing Level
3
Published
Updated
Science Keywords
Land Surface Temperature ,
Emissivity

Citation

Citation is critically important for dataset documentation and discovery. This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use and Citation Guidance.

Copy Citation

Wan, Z., Hook, S., & Hulley, G. (2021). MODIS/Terra Land Surface Temperature/Emissivity Daily L3 Global 1km SIN Grid V061 [Data set]. NASA Land Processes Distributed Active Archive Center. https://doi.org/10.5067/MODIS/MOD11A1.061 Date Accessed: 2025-12-13

File Naming Convention

MOD11A1.A2025222.h17v10.061.2025223235730.hdf

tThe file name begins with the Product Short Name (MOD11A1) followed by the Julian Date of Acquisition formatted as AYYYYDDD (A2025222), the Tile Identifier which is horizontal tile and vertical tile provided as hXXvYY (h17v10), the Version of the data collection (061), the Julian Date and Time of Production designated as YYYYDDDHHMMSS (2025223235730), and the Data Format (hdf).

Documents

USER'S GUIDE

ALGORITHM THEORETICAL BASIS DOCUMENT (ATBD)

PRODUCT QUALITY ASSESSMENT

SCIENCE DATA PRODUCT VALIDATION

GENERAL DOCUMENTATION

Variables

Variables are a set of physical properties whose values determine the characteristics or behavior of something. For example, temperature and pressure are variables of the atmosphere. Parameters and variables can be used interchangeably. Variable level attributes provide individual information for each variable.

The Name in this table is the variable name. Fill value indicates missing or undefined data points in a variable. Valid range is the range of values the variable can store. Scale factor is used to increase or decrease the size of an object and can be used to correct for distortion. For questions on a specific variable, please use the Earthdata Forum.

Name Description Units Data Type Fill Value Valid Range Scale Factor
Clear_day_cov Day clear-sky coverage N/A uint16 0 1 to 65535 0.0005
Clear_night_cov Night clear-sky coverage N/A uint16 0 1 to 65535 0.0005
Day_view_angl View zenith angle of day observation Degree uint8 255 0 to 130 N/A
Day_view_time Local time of day observation Hours uint8 255 0 to 240 0.1
Emis_31 Band 31 emissivity N/A uint8 0 1 to 255 0.002
Emis_32 Band 32 emissivity N/A uint8 0 1 to 255 0.002
LST_Day_1km Day Land Surface Temperature Kelvin uint16 0 7500 to 65535 0.02
LST_Night_1km Night Land Surface Temperature Kelvin uint16 0 7500 to 65535 0.02
Night_view_angl View zenith angle of night observation Degree uint8 255 0 to 130 N/A
Night_view_time Local time of night observation Hours uint8 255 0 to 240 0.1
QC_Day Daytime LST Quality Indicators Bit Field uint8 N/A 0 to 255 N/A
QC_Night Nighttime LST Quality indicators Bit Field uint8 N/A 0 to 255 N/A
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