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Full catalog/HAQ_TROPOMI_NO2_GLOBAL_M_L3
HAQ_TROPOMI_NO2_GLOBAL_M_L3·v2.4·dataset

Nitrogen dioxide air pollution worldwide (monthly, fine grid)

HAQAST Sentinel-5P TROPOMI Nitrogen Dioxide (NO2) GLOBAL Monthly Level 3 0.1 x 0.1 Degree Gridded Data Version 2.4 (HAQ_TROPOMI_NO2_GLOBAL_M_L3) at GES DISC
atmosphere NASA GES_DISC Level 3 active
In plain English

What it measures. Monthly average levels of nitrogen dioxide - a harmful air pollutant from burning fuel - in the lower atmosphere worldwide, mapped on a fine grid of about 10 km squares.

How it's made. Derived from daily readings by the TROPOMI instrument on the Sentinel-5P satellite, then averaged into monthly maps by a George Washington University lab using ESA's algorithm.

How & where you'd use it. Designed for tracking air pollution trends over time. Because nitrogen dioxide harms the lungs and helps form ozone and fine particles, these maps support public-health and air-quality work, especially over cities.

What's measured

ATMOSPHERE › AIR QUALITYATMOSPHERE › ATMOSPHERIC CHEMISTRY › NITROGEN COMPOUNDS › CLOUD-SCREENED TROPOSHERIC COLUMN NO2

Coverage & cadence

  • Time span2019-01-01 → ongoing
  • Measured bySentinel-5P (TROPOMI)
  • Processing levelLevel 3
  • Spatial extent-179.5, -60, 179.5, 75
  • StatusACTIVE

What you can do with it

  • Map air pollutants — NO₂, aerosols, ozone
  • Track greenhouse gases and Earth's energy budget
  • Feed weather and air-quality analysis
Official description

This product provides level 3 monthly averages of tropospheric Nitrogen dioxide (NO2) vertical column density derived from the level 2 Tropospheric Monitoring Instrument (TROPOMI) across the globe oversampled to a spatial resolution of 0.1˚ x 0.1˚ (~10 km2) using a consistent algorithm from the European Space Agency (ESA) version 2.4 that can be used for trend analysis of air pollution. The dataset record began in January 2019 and continues to the present. This L3 product was developed by the George Washington University Air, Climate and Health Laboratory as part of the NASA Health Air Quality Applied Science Team (HAQAST) using Level 2 version 2.4 TROPOMI NO2 files from the ESA. The TROPOMI instrument on Sentinel-5 Precursor acquires tropospheric NO2 column contents from low Earth orbit (~824 km above ground level) once per day globally at approximately 13:30 local time. NO2 is an air pollutant that adversely affects the human respiratory system and leads to premature mortality. NO2 is also an important precursor for ozone and fine particulates, which also have severe health impacts. In urban areas, the majority of NO2 originates from anthropogenic NOx (=NO+NO2; most NOx is emitted as NO, which rapidly cycles to NO2) emissions during high-temperature fossil fuel combustion. Tropospheric NO2 vertical column contents are qualitatively representative of near-surface NO2 concentrations and NOx emissions in urban/polluted locations.

Get the data

haq_tropomi_no2_global_m_l3_access.py
import earthaccess
earthaccess.login(strategy="netrc")          # free Earthdata Login

results = earthaccess.search_data(
    short_name="HAQ_TROPOMI_NO2_GLOBAL_M_L3",
    version="2.4",
    bounding_box=(-122.5, 37.2, -121.8, 37.9),  # your area (W,S,E,N)
    temporal=("2024-01-01", "2024-12-31"),       # your dates
)
files = earthaccess.open(results)   # stream straight from GES_DISC
Browsing CMR needs no login. Downloading or streaming bytes needs a free Earthdata Login + the earthaccess package.