MYD21A1N.061 Aqua Land Surface Temperature and 3-Band Emissivity Daily Global 1km

  • MYD21A1N provides daily nighttime land surface temperature (LST) and emissivity data at a 1,000 meter resolution, derived from the MODIS sensor on the Aqua satellite.

  • The dataset includes quality control information, view zenith angle, and observation time, allowing for detailed analysis and filtering.

  • LST values are estimated as an average from cloud-free observations with good accuracies, weighted by observation coverage.

  • Data is available from 2000-02-24 to 2024-12-10 and is freely accessible for use, sale, and redistribution through the LP DAAC.

  • Users can explore and analyze the dataset using Google Earth Engine, with code examples and documentation provided.
MODIS/061/MYD21A1N
Dataset Availability
2000-02-24T00:00:00Z–2025-10-02T00:00:00Z
Dataset Provider
Earth Engine Snippet
ee.ImageCollection("MODIS/061/MYD21A1N")
Cadence
1 Day
Tags
aqua climate daily emissivity global lst nasa surface-temperature usgs

Description

The MYD21A1N dataset is produced daily from nighttime Level 2 Gridded (L2G) intermediate LST products at a spatial resolution of 1,000 meters. 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 MOD21A1 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 nighttime average is weighted by the observation coverage for that cell. Only observations having an observation coverage greater than a 15% threshold are considered. The MYD21A1N 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 Pixel Size Description
LST_1KM K 7500 65535 meters

Land Surface Temperature
QC meters

Quality Control
Emis_29 0 255 meters

Band 29 emissivity
Emis_31 1 255 meters

Band 31 emissivity
Emis_32 1 255 meters

Band 32 emissivity
View_Angle deg 0 130 meters

MODIS view zenith angle
View_Time h 0 240 meters

Time of MODIS observation

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/MYD21A1N')
                  .filter(ee.Filter.date('2018-01-01', '2018-05-01'));
var landSurfaceTemperature = dataset.select('LST_1KM');
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,
    'Land Surface Temperature');
Open in Code Editor
The MYD21A1N dataset is produced daily from nighttime Level 2 Gridded (L2G) intermediate LST products at a spatial resolution of 1,000 meters. 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 …
MODIS/061/MYD21A1N, aqua,climate,daily,emissivity,global,lst,nasa,surface-temperature,usgs
2000-02-24T00:00:00Z/2025-10-02T00:00:00Z
-90 -180 90 180
Google Earth Engine