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Full catalog/OMPS_NPP_NMEV_L1B
OMPS_NPP_NMEV_L1B·v2·dataset

Raw ultraviolet light readings (OMPS Suomi-NPP)

OMPS/NPP L1B NM Radiance EV Calibrated Geolocated Swath Orbital V2 (OMPS_NPP_NMEV_L1B) at GES DISC
land NASA GES_DISC Level 1B active
In plain English

What it measures. Raw ultraviolet light readings from 300 to 380 nanometers, calibrated and tagged with exact location, covering the daylit part of each orbit.

How it's made. Recorded by the OMPS Nadir-Mapper sensor on the Suomi-NPP satellite, at the early calibrated-radiance stage before being turned into ozone or other products.

How & where you'd use it. This is a low-level building-block product. Most people use it indirectly through higher-level ozone and atmospheric products derived from it rather than reading it directly.

What's measured

SPECTRAL/ENGINEERING › ULTRAVIOLET WAVELENGTHS › ULTRAVIOLET RADIANCE

Coverage & cadence

  • Time span2011-11-13 → ongoing
  • Measured bySuomi-NPP (OMPS)
  • Processing levelLevel 1B
  • Spatial extent-180, -90, 180, 90
  • StatusACTIVE

What you can do with it

  • Track deforestation, fire scars and land-cover change
  • Monitor crop and vegetation health (NDVI/EVI)
  • Map how built-up vs. green an area is over time
Official description

The OMPS-NPP L1B NM Radiance EV Calibrated Geolocated Swath Orbital collection contains calibrated and geolocated radiances from 300 to 380 nm measured by the OMPS Nadir-Mapper sensor on the Suomi-NPP satellite. Each granule contains data from the daylight portion of a single orbit (about 50 minutes). Spatial coverage is global (-90 to 90 degrees latitude), and there are about 14.5 orbits per day each with a swath width of 2600 km.

Get the data

omps_npp_nmev_l1b_access.py
import earthaccess
earthaccess.login(strategy="netrc")          # free Earthdata Login

results = earthaccess.search_data(
    short_name="OMPS_NPP_NMEV_L1B",
    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.