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Full catalog/TEMPO_RAD_L1_NRT
TEMPO_RAD_L1_NRT·vV02·dataset

Raw daylight brightness measured over North America (TEMPO, near real-time)

TEMPO geolocated Earth radiances V02 (NRT) (PROVISIONAL)
atmosphere NASA LARC_CLOUD Level 1B active netCDF-4
In plain English

What it measures. How bright the daytime Earth looks to the TEMPO sensor over North America in ultraviolet and visible light, recorded as calibrated, location-tagged brightness at about 10-km detail.

How it's made. Produced from the TEMPO instrument using a fast processor that calibrates the brightness and pins down its location with help from GOES weather-satellite data, available within a few hours of observation.

How & where you'd use it. A raw building-block input for air-quality and trace-gas products; its quick turnaround makes it useful for applications that need data fast, but it is mostly used through higher-level products.

What's measured

ATMOSPHERE › ATMOSPHERIC RADIATIONATMOSPHERE › ATMOSPHERIC RADIATION › RADIATIVE FLUX

Coverage & cadence

  • Time span2025-09-17 → ongoing
  • Measured byIS-40e (TEMPO)
  • Processing levelLevel 1B
  • FormatsnetCDF-4
  • 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

Level 1 radiance (PROVISIONAL) 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 calibrated and geolocated radiances for the UV and visible bands, corresponding noise, nominal 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) Image Navigation and Registration (INR) using GOES-R data, and (3) post INR processing geolocation tagging. The Level 1 radiance near real-time (NRT) files are produced using a fast version of the TEMPO baseline retrieval processor. The TEMPO NRT products are useful for applications with low-latency requirements (<2-3 hours after observation is taken, with Level 1 products being available earlier than Level 2 cloud and trace gas products). The NRT processing optimizes radiance calibration, image navigation and registration, and cloud and trace gas retrievals for rapid processing, while ensuring that product quality is sufficient for most NRT applications.

Get the data

tempo_rad_l1_nrt_access.py
import earthaccess
earthaccess.login(strategy="netrc")          # free Earthdata Login

results = earthaccess.search_data(
    short_name="TEMPO_RAD_L1_NRT",
    version="V02",
    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.