TEMPO gridded NO2 tropospheric and stratospheric columns V03

NASA/TEMPO/NO2_L3
Dataset Availability
2023-08-01T00:00:00Z–2025-05-19T00:37:52Z
Dataset Provider
Earth Engine Snippet
ee.ImageCollection("NASA/TEMPO/NO2_L3")
Tags
air-quality nasa nitrogen-dioxide pollution satellite-imagery tropomi

Description

Nitrogen dioxide Level 3 files provide trace gas information on a regular grid covering the TEMPO field of regard for nominal TEMPO observations. Level 3 files are derived by combining information from all Level 2 files constituting a TEMPO East-West scan cycle. The rasters contain information on tropospheric, stratospheric and total nitrogen dioxide vertical columns, ancillary data used in air mass factor and stratospheric/tropospheric separation calculations, and retrieval quality flags. The re-gridding algorithm uses an area-weighted approach.

Bands

Pixel Size
2226 meters

Bands

Name Units Description
weight km^2

Sum of Level 2 pixel overlap areas. Represents the weighting factor for each grid cell, indicating the fraction of the grid cell area with valid data.
vertical_column_troposphere molecules/cm^2

NO2 troposphere vertical column
vertical_column_troposphere_uncertainty molecules/cm^2

NO2 troposphere vertical column uncertainty
vertical_column_stratosphere molecules/cm^2

NO2 stratosphere vertical column uncertainty
main_data_quality_flag Dimensionless

Main data quality flag. Provides an overall assessment of the data quality.
num_vertical_column_troposphere_samples Dimensionless

Number of Level 2 pixel values contributing to Level 3 grid for the tropospheric vertical column.
min_vertical_column_troposphere_sample molecules/cm^2

Smallest Level 2 pixel value contributing to Level 3 grid for the tropospheric vertical column.
max_vertical_column_troposphere_sample molecules/cm^2

Largest Level 2 pixel value contributing to Level 3 grid for the tropospheric vertical column.
num_vertical_column_troposphere_uncertainty_samples Dimensionless

Number of Level 2 pixel values contributing to Level 3 grid for the tropospheric vertical column uncertainty.
min_vertical_column_troposphere_uncertainty_sample molecules/cm^2

Smallest Level 2 pixel value contributing to Level 3 grid for the tropospheric vertical column uncertainty.
max_vertical_column_troposphere_uncertainty_sample molecules/cm^2

Largest Level 2 pixel value contributing to Level 3 grid for the tropospheric vertical column uncertainty.
num_vertical_column_stratosphere_samples Dimensionless

Number of Level 2 pixel values contributing to Level 3 grid for the stratospheric vertical column.
min_vertical_column_stratosphere_sample molecules/cm^2

Smallest Level 2 pixel value contributing to Level 3 grid for the stratospheric vertical column.
max_vertical_column_stratosphere_sample molecules/cm^2

Largest Level 2 pixel value contributing to Level 3 grid for the stratospheric vertical column.
num_vertical_column_total_samples Dimensionless

Number of Level 2 pixel values contributing to Level 3 grid for the total vertical column.
min_vertical_column_total_sample molecules/cm^2

Smallest Level 2 pixel value contributing to Level 3 grid for the total vertical column.
max_vertical_column_total_sample molecules/cm^2

Largest Level 2 pixel value contributing to Level 3 grid for the total vertical column.
solar_zenith_angle deg

Solar zenith angle at pixel center
viewing_zenith_angle deg

Viewing zenith angle at pixel center
relative_azimuth_angle deg

Relative azimuth angle at pixel center
vertical_column_total molecules/cm^2

NO2 vertical column
vertical_column_total_uncertainty molecules/cm^2

NO2 vertical column uncertainty
surface_pressure hPa

Surface pressure
terrain_height m

Terrain height
snow_ice_fraction Dimensionless

Fraction of pixel area covered by snow and/or ice
fitted_slant_column molecules/cm^2

NO2 fitted slant column
fitted_slant_column_uncertainty molecules/cm^2

NO2 fitted slant column uncertainty
albedo Dimensionless

Surface albedo
tropopause_pressure hPa

Tropopause pressure
amf_total Dimensionless

NO2 air mass factor
eff_cloud_fraction Dimensionless

Effective cloud fraction
amf_cloud_fraction Dimensionless

Cloud radiance fraction for AMF calculation
amf_cloud_pressure hPa

Cloud pressure for AMF calculation
amf_troposphere Dimensionless

NO2 troposphere air mass factor
amf_stratosphere Dimensionless

NO2 stratosphere air mass factor

main_data_quality_flag Class Table

Value Color Description
0 good
1 suspect
2 bad

Terms of Use

Terms of Use

This dataset is in the public domain and is available without restriction on use and distribution. See NASA's Earth Science Data & Information Policy for additional information.

Citations

Citations:

  • NASA/LARC/SD/ASDC. (n.d.). TEMPO gridded NO2 tropospheric and stratospheric columns V03 (PROVISIONAL) [Data set]. NASA Langley Atmospheric Science Data Center DAAC. Retrieved from https://doi.org/10.5067/IS-40e/TEMPO/NO2_L3.003

DOIs

Explore with Earth Engine

Code Editor (JavaScript)

var collection = ee.ImageCollection('NASA/TEMPO/NO2_L3')
    .filterDate('2024-04-01', '2024-04-05')

var visParams = {
  min: 0,
  max: 1.5e16,
  bands: ['vertical_column_troposphere'],
  palette: [
    '000080', '0000D9', '4000FF', '8000FF', '0080FF',
    '00D9FF', '80FFFF', 'FF8080', 'D90000', '800000'
  ]
};
Map.setCenter(-95.06, 42.02, 3)
Map.addLayer(collection, visParams, 'Tropospheric NO2')
Open in Code Editor
Nitrogen dioxide Level 3 files provide trace gas information on a regular grid covering the TEMPO field of regard for nominal TEMPO observations. Level 3 files are derived by combining information from all Level 2 files constituting a TEMPO East-West scan cycle. The rasters contain information on tropospheric, stratospheric and …
NASA/TEMPO/NO2_L3, air-quality,nasa,nitrogen-dioxide,pollution,satellite-imagery,tropomi
2023-08-01T00:00:00Z/2025-05-19T00:37:52Z
-90 -180 90 180
Google Earth Engine