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Full catalog/S5P_L1B_IR_SIR
S5P_L1B_IR_SIR·v3·dataset

Sunlight brightness reaching the sensor, shortwave infrared (Sentinel-5P)

Sentinel-5P TROPOMI Irradiance product SWIR module L1B V3 (S5P_L1B_IR_SIR) at GES DISC
atmosphere NASA GES_DISC Level 1B active
In plain English

What it measures. How much sunlight (in the shortwave infrared range) is arriving at the satellite's sensor, recorded as calibrated brightness. This is the incoming-light reference, not a measurement of the Earth's surface itself.

How it's made. Produced from the shortwave infrared part of the TROPOMI instrument on the Sentinel-5P satellite, processed from raw data into a calibrated Level-1B reference product.

How & where you'd use it. A low-level calibration input used together with Earth-radiance data to derive air-quality and atmospheric products; most people use it indirectly through those higher-level results.

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 → ongoing
  • Measured bySentinel-5P (TROPOMI)
  • Processing levelLevel 1B
  • 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

Starting with version 3, Calibration Key Data (CKD) have been updated. 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="3",
    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.