TEMPO gridded HCHO vertical columns V03

NASA/TEMPO/HCHO_L3
Dataset Availability
2023-08-01T00:00:00Z–2025-08-13T12:43:01Z
Dataset Provider
Earth Engine Snippet
ee.ImageCollection("NASA/TEMPO/HCHO_L3")
Tags
air-quality formaldehyde nasa pollution satellite-imagery tropomi

Description

Formaldehyde Level 3 collection provides 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 formaldehyde vertical columns, ancillary data used in air mass factor calculations and reference sector or de-striping corrections, and retrieval quality flags. The re-gridding algorithm uses an area-weighted approach.

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 molecules/cm^2 meters

HCHO vertical column
vertical_column_uncertainty molecules/cm^2 meters

HCHO vertical column uncertainty
main_data_quality_flag Dimensionless meters

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

Number of vertical column samples
min_vertical_column_sample molecules/cm^2 meters

Smallest vertical column sample
max_vertical_column_sample molecules/cm^2 meters

Largest vertical column sample
solar_zenith_angle deg meters

Solar zenith angle at pixel center
viewing_zenith_angle deg meters

Viewing zenith angle at pixel center
relative_azimuth_angle deg meters

Relative azimuth angle at pixel center
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

HCHO fitted slant column
fitted_slant_column_uncertainty molecules/cm^2 meters

HCHO fitted slant column uncertainty
albedo Dimensionless meters

Surface albedo
amf Dimensionless meters

HCHO air mass factor
eff_cloud_fraction Dimensionless meters

Effective cloud fraction
amf_cloud_fraction Dimensionless meters

Cloud radiance fraction for AMF calculation
amf_cloud_pressure hPa meters

Cloud pressure for AMF calculation

main_data_quality_flag Class Table

Value Color Description
0 None

good
1 None

suspect
2 None

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 HCHO vertical columns V03 (PROVISIONAL) [Data set]. NASA Langley Atmospheric Science Data Center DAAC. Retrieved from https://doi.org/10.5067/IS-40e/TEMPO/HCHO_L3.003

DOIs

Explore with Earth Engine

Code Editor (JavaScript)

var collection = ee.ImageCollection('NASA/TEMPO/HCHO_L3')
    .filterDate('2024-04-01', '2024-04-05')

var visParams = {
  min: 0,
  max: 1.5e16,
  bands: ['vertical_column'],
  palette: [
    '000080', '0000D9', '4000FF', '8000FF', '0080FF',
    '00D9FF', '80FFFF', 'FF8080', 'D90000', '800000'
  ]
};
Map.setCenter(-95.06, 42.02, 3)
Map.addLayer(collection, visParams, 'HCHO vertical column')
Open in Code Editor
Formaldehyde Level 3 collection provides 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 formaldehyde vertical columns, ancillary …
NASA/TEMPO/HCHO_L3, air-quality,formaldehyde,nasa,pollution,satellite-imagery,tropomi
2023-08-01T00:00:00Z/2025-08-13T12:43:01Z
-90 -180 90 180
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