TEMPO gridded NO2 (QA filtered) tropospheric and stratospheric columns V03

Dataset Availability: 2023-08-01T00:00:00Z–2025-09-05T12:26:52Z
Dataset Provider: QA Filtered: Google and NASA ASDC

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.

The QA Filtered TEMPO NO2 L3 dataset is a quality-controlled version of the original data. It is generated by removing data points with high cloud cover (>50%), extreme solar zenith angle (>80 degrees), and main data quality (flag > 0).

A version of this dataset without QA filters applied is available as NASA/TEMPO/NO2_L3
General Documentation

Bands

Pixel Size 2226 meters

Bands

Name	Units	Pixel Size	Description
`weight`	km^2	meters	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	meters	NO2 troposphere vertical column
`vertical_column_troposphere_uncertainty`	molecules/cm^2	meters	NO2 troposphere vertical column uncertainty
`vertical_column_stratosphere`	molecules/cm^2	meters	NO2 stratosphere vertical column uncertainty
`main_data_quality_flag`	Dimensionless	meters	Main data quality flag which is always 0, indicating good quality data.
`num_vertical_column_troposphere_samples`	Dimensionless	meters	Number of Level 2 pixel values contributing to Level 3 grid for the tropospheric vertical column.
`min_vertical_column_troposphere_sample`	molecules/cm^2	meters	Smallest Level 2 pixel values contributing to Level 3 grid for the tropospheric vertical column.
`max_vertical_column_troposphere_sample`	molecules/cm^2	meters	Largest Level 2 pixel values contributing to Level 3 grid for the tropospheric vertical column.
`num_vertical_column_troposphere_uncertainty_samples`	Dimensionless	meters	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	meters	Smallest Level 2 pixel values contributing to Level 3 grid for the tropospheric vertical column uncertainty.
`max_vertical_column_troposphere_uncertainty_sample`	molecules/cm^2	meters	Largest Level 2 pixel values contributing to Level 3 grid for the tropospheric vertical column uncertainty.
`num_vertical_column_stratosphere_samples`	Dimensionless	meters	Number of Level 2 pixel values contributing to Level 3 grid for the stratospheric vertical column.
`min_vertical_column_stratosphere_sample`	molecules/cm^2	meters	Smallest Level 2 pixel values contributing to Level 3 grid for the stratospheric vertical column.
`max_vertical_column_stratosphere_sample`	molecules/cm^2	meters	Largest Level 2 pixel values contributing to Level 3 grid for the stratospheric vertical column.
`num_vertical_column_total_samples`	Dimensionless	meters	Number of Level 2 pixel values contributing to Level 3 grid for the total vertical column.
`min_vertical_column_total_sample`	molecules/cm^2	meters	Smallest Level 2 pixel values contributing to Level 3 grid for the total vertical column.
`max_vertical_column_total_sample`	molecules/cm^2	meters	Largest Level 2 pixel values contributing to Level 3 grid for the total vertical column.
`solar_zenith_angle`	deg	meters	Data is filtered to include only observations with solar zenith angle less than or equal to 80 degrees.
`viewing_zenith_angle`	deg	meters	Viewing zenith angle at pixel center
`relative_azimuth_angle`	deg	meters	Relative azimuth angle at pixel center
`vertical_column_total`	molecules/cm^2	meters	NO2 vertical column
`vertical_column_total_uncertainty`	molecules/cm^2	meters	NO2 vertical column uncertainty
`surface_pressure`	hPa	meters	Surface pressure
`terrain_height`	m	meters	Terrain height
`snow_ice_fraction`	Dimensionless	meters	Fraction of pixel area covered by snow and/or ice
`fitted_slant_column`	molecules/cm^2	meters	NO2 fitted slant column
`fitted_slant_column_uncertainty`	molecules/cm^2	meters	NO2 fitted slant column uncertainty
`albedo`	Dimensionless	meters	Surface albedo
`tropopause_pressure`	hPa	meters	Tropopause pressure
`amf_total`	Dimensionless	meters	NO2 air mass factor
`eff_cloud_fraction`	Dimensionless	meters	Data is filtered to include only observations with effective cloud fraction less than or equal to 50%.
`amf_cloud_fraction`	Dimensionless	meters	Cloud radiance fraction for AMF calculation
`amf_cloud_pressure`	hPa	meters	Cloud pressure for AMF calculation
`amf_troposphere`	Dimensionless	meters	NO2 troposphere air mass factor
`amf_stratosphere`	Dimensionless	meters	NO2 stratosphere air mass factor

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

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

https://doi.org/10.5067/IS-40e/TEMPO/NO2_L3.003

Explore with Earth Engine

Code Editor (JavaScript)

 var 
  
 collection 
  
 = 
  
 ee 
 . 
 ImageCollection 
 ( 
 'NASA/TEMPO/NO2_L3_QA' 
 ) 
  
 . 
 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

TEMPO gridded NO2 (QA filtered) tropospheric and stratospheric columns V03

NASA/TEMPO/NO2_L3_QA, air-quality,nasa,nitrogen-dioxide,pollution,satellite-imagery,tropomi

2023-08-01T00:00:00Z/2025-09-05T12:26:52Z

-90 -180 90 180

Google Earth Engine

https://developers.google.com/earth-engine/datasets

TEMPO gridded NO2 (QA filtered) tropospheric and stratospheric columns V03 Stay organized with collections Save and categorize content based on your preferences.

Description

Bands

Terms of Use

Citations

DOIs

Explore with Earth Engine

Code Editor (JavaScript)

TEMPO gridded NO2 (QA filtered) tropospheric and stratospheric columns V03