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–2024-05-22T00:00:00Z
Dataset Provider
Earth Engine Snippet
ee.ImageCollection("MODIS/061/MOD21C1")
Tags
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

Resolution
1000 meters

Bands

Name Units Min Max Scale Offset Description
Count_Day 1 65535

Count of Daytime Input Values

Count_Night 1 65535

Count of Nighttime Input Values

QC_Day

Quality Control for Daytime LST and Emissivity

QC_Night

Quality Control for Nighttime LST and Emissivity

LST_Day K 7500 65535 0.02

Average Daytime Land Surface Temperature

LST_Night K 7500 65535 0.02

Average Nighttime Land Surface Temperature

LST_Day_err K 1 255 0.04

Root-mean-square-error Daytime Land Surface Temperature

LST_Night_err K 1 255 0.04

Average Nighttime Land Surface Temperature

Day_view_angle deg 0 130 -65

Average Daytime View Zenith Angle

Night_view_angle deg 0 130 -65

Average Nighttime View Zenith Angle

Day_view_time h 0 120 0.2

Average Daytime View Time (UTC)

Night_view_time h 0 120 0.2

Average Nighttime View Time (UTC)

Emis_29_Day 1 255 0.002 0.49

Average Daytime Band 29 Emissivity

Emis_29_Night 1 255 0.002 0.49

Average Nighttime Band 29 Emissivity

Emis_29_Day_err 1 65535 0.0001

Root-mean-square-error Daytime Band 29 Emissivity

Emis_29_Night_err 1 65535 0.0001

Root-mean-square-error Nighttime Band 29 Emissivity

Emis_31_Day 1 255 0.002 0.49

Average Daytime Band 31 Emissivity

Emis_31_Night 1 255 0.002 0.49

Average Nighttime Band 31 Emissivity

Emis_31_Day_err 1 65535 0.0001

Root-mean-square-error Daytime Band 31 Emissivity

Emis_31_Night_err 1 65535 0.0001

Root-mean-square-error Nighttime Band 31 Emissivity

Emis_32_Day 1 255 0.002 0.49

Average Daytime Band 32 Emissivity

Emis_32_Night 1 255 0.002 0.49

Average Nighttime Band 32 Emissivity

Emis_32_Day_err 1 65535 0.0001

Root-mean-square-error Daytime Band 32 Emissivity

Emis_32_Night_err 1 65535 0.0001

Root-mean-square-error Nighttime Band 32 Emissivity

View_Angle deg -65

MODIS view zenith angle

Percent_land_in_grid % 1 100

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)

var dataset = ee.ImageCollection('MODIS/061/MOD21C1')
                  .filter(ee.Filter.date('2018-01-01', '2018-05-01'));
var landSurfaceTemperature = dataset.select('LST_Day');
var landSurfaceTemperatureVis = {
  min: 216.0,
  max: 348.0,
  palette: [
    '040274', '040281', '0502a3', '0502b8', '0502ce', '0502e6',
    '0602ff', '235cb1', '307ef3', '269db1', '30c8e2', '32d3ef',
    '3be285', '3ff38f', '86e26f', '3ae237', 'b5e22e', 'd6e21f',
    'fff705', 'ffd611', 'ffb613', 'ff8b13', 'ff6e08', 'ff500d',
    'ff0000', 'de0101', 'c21301', 'a71001', '911003'
  ],
};
Map.setCenter(6.746, 46.529, 2);
Map.addLayer(
    landSurfaceTemperature, landSurfaceTemperatureVis,
    'Average Daytime Land Surface Temperature');
Open in Code Editor