Earth Data School
About
Full catalog/TEMPO_RAD_L1
TEMPO_RAD_L1·vV03·dataset

Raw daytime light measured over North America (TEMPO)

TEMPO geolocated Earth radiances V03 (PROVISIONAL)
atmosphere NASA LARC_CLOUD Level 1B NetCDF-4
In plain English

What it measures. Raw, calibrated readings of how much daytime light (in ultraviolet and visible colors) the sensor recorded over North America, along with viewing geometry and quality information.

How it's made. Produced from the TEMPO instrument, which watches North America from a fixed vantage in space, at its lowest processing level where the raw signal is calibrated, wavelength-tuned, and geolocated using GOES weather-satellite data.

How & where you'd use it. A building-block input for TEMPO's air-quality products; most users rely on the downstream pollution maps rather than this raw light-measurement file, which is still marked provisional.

What's measured

ATMOSPHERE › ATMOSPHERIC RADIATIONATMOSPHERE › ATMOSPHERIC RADIATION › RADIATIVE FLUX

Coverage & cadence

  • Time span2023-08-02 → 2025-09-16
  • Measured byIS-40e (TEMPO)
  • Processing levelLevel 1B
  • FormatsNetCDF-4
  • 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

Level 1 radiance files provide radiance information at TEMPO’s native spatial resolution, ~10 km^2 at the center of the Field of Regard (FOR), for individual granules. Each granule covers the entire North-South TEMPO FOR but only a portion of the East-West FOR. The files are provided in netCDF4 format, and contain information on radiometrically and wavelength calibrated and geolocated radiances for the UV and visible bands, corresponding noise, parameterized wavelength grid, geolocation, viewing geometry, quality flags and other ancillary information. The product is produced using the L0-1b processor which includes multiple steps: (1) Image processing to produce radiometrically calibrated radiance, (2) Additional wavelength calibration to improve wavelength registration, (3) Image Navigation and Registration (INR) using GOES-R data, and (4) post INR processing geolocation tagging. These data reached provisional validation on December 9, 2024.

Get the data

tempo_rad_l1_access.py
import earthaccess
earthaccess.login(strategy="netrc")          # free Earthdata Login

results = earthaccess.search_data(
    short_name="TEMPO_RAD_L1",
    version="V03",
    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 LARC_CLOUD
Browsing CMR needs no login. Downloading or streaming bytes needs a free Earthdata Login + the earthaccess package.