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Full catalog/S5P_L1B_IR_SIR
S5P_L1B_IR_SIR·v2·dataset

Raw sunlight calibration for the pollution sensor (Sentinel-5P, SWIR)

Sentinel-5P TROPOMI Irradiance product SWIR module L1B V2 (S5P_L1B_IR_SIR) at GES DISC
atmosphere NASA GES_DISC Level 1B
In plain English

What it measures. Records the brightness of incoming sunlight (irradiance) measured by the shortwave-infrared part of the TROPOMI sensor, used as a reference for calibrating the instrument. It also includes radiance and engineering data.

How it's made. Comes from the TROPOMI spectrometer on Europe's Sentinel-5P satellite, processed from raw data into an early calibration product (Level 1B) for the shortwave-infrared channels.

How & where you'd use it. A low-level calibration input that helps turn TROPOMI's measurements into air-pollution and trace-gas products; most people use those downstream products rather than this directly.

What's measured

ATMOSPHERE › ATMOSPHERIC RADIATION › ATMOSPHERIC EMITTED RADIATIONATMOSPHERE › ATMOSPHERIC RADIATION › INCOMING SOLAR RADIATIONATMOSPHERE › ATMOSPHERIC RADIATION › NET RADIATIONATMOSPHERE › ATMOSPHERIC RADIATION › RADIATIVE FORCINGATMOSPHERE › ATMOSPHERIC RADIATION › SCATTERINGATMOSPHERE › ATMOSPHERIC RADIATION › SHORTWAVE RADIATIONATMOSPHERE › ATMOSPHERIC RADIATION › SOLAR IRRADIANCEATMOSPHERE › ATMOSPHERIC RADIATION › SOLAR RADIATIONSPECTRAL/ENGINEERING › PLATFORM CHARACTERISTICS › FLIGHT DATA LOGSSPECTRAL/ENGINEERING › PLATFORM CHARACTERISTICS › ORBITAL CHARACTERISTICSSPECTRAL/ENGINEERING › PLATFORM CHARACTERISTICS › VIEWING GEOMETRYSPECTRAL/ENGINEERING › SENSOR CHARACTERISTICS › GEOLOCATIONSPECTRAL/ENGINEERING › SENSOR CHARACTERISTICS › VIEWING GEOMETRY

Coverage & cadence

  • Time span2018-04-30 → 2025-11-21
  • Measured bySentinel-5P (TROPOMI)
  • Processing levelLevel 1B
  • StatusCOMPLETE

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

The Copernicus Sentinel-5 Precursor (Sentinel-5P or S5P) satellite mission is one of the European Space Agency's (ESA) new mission family - Sentinels, and it is a joint initiative between the Kingdom of the Netherlands and the ESA. The sole payload on Sentinel-5P is the TROPOspheric Monitoring Instrument (TROPOMI), which is a nadir-viewing 108 degree Field-of-View push-broom grating hyperspectral spectrometer, covering the wavelength of ultraviolet-visible (UV-VIS, 270nm to 495nm), near infrared (NIR, 675nm to 775nm), and shortwave infrared (SWIR, 2305nm-2385nm). TROPOMI Level-1B (L1B) product is generated by the Koninklijk Nederlands Meteoroligisch Instituut (KNMI) TROPOMI L01B processor from Level-0 input data and auxiliary data products with the netCDF-4 enhanced model. It provides users with radiance, irradiance, calibration and engineering products.

Get the data

s5p_l1b_ir_sir_access.py
import earthaccess
earthaccess.login(strategy="netrc")          # free Earthdata Login

results = earthaccess.search_data(
    short_name="S5P_L1B_IR_SIR",
    version="2",
    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.