VNP21A1N.002: Night Land Surface Temperature and Emissivity Daily 1km

  • The VNP21A1N dataset provides daily Land Surface Temperature and Emissivity (LST&E) data specifically for nighttime, compiled from VIIRS observations.

  • This dataset is available from January 19, 2012, to October 15, 2025, with a daily cadence and a pixel size of 1000 meters.

  • The dataset includes bands for Land Surface Temperature, Quality Control, Emissivity for different bands, View Angle, and View Time.

  • Data is freely accessible with a request to cite the datasets when used in publications.
NASA/VIIRS/002/VNP21A1N
Dataset Availability
2012-01-19T00:00:00Z–2025-10-26T00:00:00Z
Dataset Provider
Earth Engine Snippet
ee.ImageCollection("NASA/VIIRS/002/VNP21A1N")
Cadence
1 Day
Tags
climate daily land nasa night noaa surface temperature viirs

Description

The NASA Suomi National Polar-Orbiting Partnership (Suomi NPP) Visible Infrared Imaging Radiometer Suite (VIIRS) Land Surface Temperature and Emissivity (LST&E) Night Version 1 product (VNP21A1N) is compiled daily from nighttime Level 2 Gridded (L2G) intermediate products.

The L2G process maps the daily VNP21 swath granules onto a sinusoidal MODIS grid and stores all observations overlapping a gridded cell for a given night. The VNP21A1 algorithm sorts through all these observations for each cell and estimates the final LST value as an average from all cloud-free observations that have good LST accuracies. Only observations having observation coverage more than a certain threshold (15%) are considered for this averaging.

Documentation:

Bands

Pixel Size
1000 meters

Bands

Name Units Pixel Size Description
LST_1KM K meters

Daily 1 km Land Surface Temperature.
QC meters

Daily Quality control for LST and emissivity
Emis_14 meters

Daily M14 emissivity
Emis_15 meters

Daily M15 emissivity
Emis_16 meters

Daily M16 emissivity
View_Angle deg meters

View zenith angle of LST
View_Time h meters

Time of LST observation

Terms of Use

Terms of Use

LP DAAC NASA data are freely accessible; however, when an author publishes these data or works based on the data, it is requested that the author cite the datasets within the text of the publication and include a reference to them in the reference list.

Citations

Citations:

DOIs

Explore with Earth Engine

Code Editor (JavaScript)

var dataset = ee.ImageCollection('NASA/VIIRS/002/VNP21A1N')
                  .filter(ee.Filter.date('2022-11-01', '2022-12-01'));

var visualization = {
  bands: ['LST_1KM'],
  min: [150],
  max: [300],
  palette: [
    'a50026',
    'd73027',
    'f46d43',
    'fdae61',
    'fee08b',
    'ffffbf',
    'd9ef8b',
    'a6d96a',
    '66bd63',
    '1a9850',
    '006837',
  ]
};
Map.setCenter(41.2, 38.84, 3);
Map.addLayer(dataset, visualization, 'LST');
Open in Code Editor
The NASA Suomi National Polar-Orbiting Partnership (Suomi NPP) Visible Infrared Imaging Radiometer Suite (VIIRS) Land Surface Temperature and Emissivity (LST&E) Night Version 1 product (VNP21A1N) is compiled daily from nighttime Level 2 Gridded (L2G) intermediate products. The L2G process maps the daily VNP21 swath granules onto a sinusoidal MODIS grid …
NASA/VIIRS/002/VNP21A1N, climate,daily,land,nasa,night,noaa,surface,temperature,viirs
2012-01-19T00:00:00Z/2025-10-26T00:00:00Z
-90 -180 90 180
Google Earth Engine