MOD21C1.061 Terra Land Surface Temperature and 3-Band Emissivity Daily L3 Global 0.05 Deg CMG

    MODIS/061/MOD21C1
    Dataset Availability
    2000-02-24T00:00:00Z–2025-09-04T00:00:00Z
    Dataset Provider
    Earth Engine Snippet
    ee.ImageCollection("MODIS/061/MOD21C1")
    Cadence
    1 Day
    Tags
    climate daily emissivity global lst nasa surface-temperature terra usgs

    Description

    The MOD21C1 dataset is produced daily in a 0.05 degree (5,600 meters at the equator) Climate Modeling Grid (CMG) from daytime Level 2 Gridded (L2G) intermediate LST products. The L2G process maps the daily MOD21 swath granules onto a sinusoidal MODIS grid and stores all observations falling over a gridded cell for a given day. The MOD21C1 algorithm sorts through these observations for each cell and estimates the final LST value as an average from all observations that are cloud free and have good LST&E accuracies. The daytime average is weighted by the observation coverage for that cell. Only observations having an observation coverage greater than a 15% threshold are considered. The MOD21C1 product contains the calculated LST as well as quality control, the three emissivity bands, view zenith angle, and time of observation.

    Documentation:

    Bands

    Pixel Size 1000 meters

    Bands

    Name
    Units
    Min
    Max
    Scale
    Offset
    Pixel Size
    Description
    Count_Day
    1
    65535
    meters

    Count of Daytime Input Values

    Count_Night
    1
    65535
    meters

    Count of Nighttime Input Values

    QC_Day
    meters

    Quality Control for Daytime LST and Emissivity

    QC_Night
    meters

    Quality Control for Nighttime LST and Emissivity

    LST_Day
    K
    7500
    65535
    0.02
    meters

    Average Daytime Land Surface Temperature

    LST_Night
    K
    7500
    65535
    0.02
    meters

    Average Nighttime Land Surface Temperature

    LST_Day_err
    K
    1
    255
    0.04
    meters

    Root-mean-square-error Daytime Land Surface Temperature

    LST_Night_err
    K
    1
    255
    0.04
    meters

    Average Nighttime Land Surface Temperature

    Day_view_angle
    deg
    0
    130
    -65
    meters

    Average Daytime View Zenith Angle

    Night_view_angle
    deg
    0
    130
    -65
    meters

    Average Nighttime View Zenith Angle

    Day_view_time
    h
    0
    120
    0.2
    meters

    Average Daytime View Time (UTC)

    Night_view_time
    h
    0
    120
    0.2
    meters

    Average Nighttime View Time (UTC)

    Emis_29_Day
    1
    255
    0.002
    0.49
    meters

    Average Daytime Band 29 Emissivity

    Emis_29_Night
    1
    255
    0.002
    0.49
    meters

    Average Nighttime Band 29 Emissivity

    Emis_29_Day_err
    1
    65535
    0.0001
    meters

    Root-mean-square-error Daytime Band 29 Emissivity

    Emis_29_Night_err
    1
    65535
    0.0001
    meters

    Root-mean-square-error Nighttime Band 29 Emissivity

    Emis_31_Day
    1
    255
    0.002
    0.49
    meters

    Average Daytime Band 31 Emissivity

    Emis_31_Night
    1
    255
    0.002
    0.49
    meters

    Average Nighttime Band 31 Emissivity

    Emis_31_Day_err
    1
    65535
    0.0001
    meters

    Root-mean-square-error Daytime Band 31 Emissivity

    Emis_31_Night_err
    1
    65535
    0.0001
    meters

    Root-mean-square-error Nighttime Band 31 Emissivity

    Emis_32_Day
    1
    255
    0.002
    0.49
    meters

    Average Daytime Band 32 Emissivity

    Emis_32_Night
    1
    255
    0.002
    0.49
    meters

    Average Nighttime Band 32 Emissivity

    Emis_32_Day_err
    1
    65535
    0.0001
    meters

    Root-mean-square-error Daytime Band 32 Emissivity

    Emis_32_Night_err
    1
    65535
    0.0001
    meters

    Root-mean-square-error Nighttime Band 32 Emissivity

    View_Angle
    deg
    -65
    meters

    MODIS view zenith angle

    Percent_land_in_grid
    %
    1
    100
    meters

    Percent of Land Detections in Grid Cell

    Terms of Use

    Terms of Use

    MODIS data and products acquired through the LP DAAC have no restrictions on subsequent use, sale, or redistribution.

    Citations

    Citations:

    DOIs

    Explore with Earth Engine

    Code Editor (JavaScript) 

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 'Average Daytime Land Surface Temperature' 
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    Open in Code Editor
    The MOD21C1 dataset is produced daily in a 0.05 degree (5,600 meters at the equator) Climate Modeling Grid (CMG) from daytime Level 2 Gridded (L2G) intermediate LST products. The L2G process maps the daily MOD21 swath granules onto a sinusoidal MODIS grid and stores all observations falling over a gridded …
    MODIS/061/MOD21C1, climate,daily,emissivity,global,lst,nasa,surface-temperature,terra,usgs
    2000-02-24T00:00:00Z/2025-09-04T00:00:00Z
    -90 -180 90 180
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