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Full catalog/PACE_SPEXONE_L1B_SCI
PACE_SPEXONE_L1B_SCI·v3·dataset

Calibrated multi-angle polarized light data (PACE SPEXone)

PACE SPEXone Level-1B Science Data, version 3
ocean NASA OB_CLOUD Level 1 active netCDF-4
In plain English

What it measures. Calibrated readings of polarized light viewed from multiple angles, recorded by the SPEXone instrument. These are sensor measurements converted into proper physical units.

How it's made. Processed from the raw SPEXone data on NASA's PACE satellite into calibrated instrument-unit values (Level 1B).

How & where you'd use it. A low-level input mostly used to derive higher-level products about airborne particles and ocean color; most people use those finished products rather than this calibrated stage directly.

What's measured

OCEANS › OCEAN OPTICSSPECTRAL/ENGINEERING › INFRARED WAVELENGTHSSPECTRAL/ENGINEERING › SENSOR CHARACTERISTICSSPECTRAL/ENGINEERING › VISIBLE WAVELENGTHS

Coverage & cadence

  • Time span2024-02-23 → ongoing
  • Measured byPACE (SPEXone)
  • Processing levelLevel 1
  • Spatial extent-180, -90, 180, 90
  • FormatsnetCDF-4
  • StatusACTIVE

What you can do with it

  • Watch sea-surface temperature and marine heatwaves
  • Spot algal blooms and ocean-colour shifts
  • Support fisheries and coastal monitoring
Official description

Level 1B (L1B) data are Level 1A (L1A) data that have been processed to instrument units (not all instruments have L1B source data).

Get the data

pace_spexone_l1b_sci_access.py
import earthaccess
earthaccess.login(strategy="netrc")          # free Earthdata Login

results = earthaccess.search_data(
    short_name="PACE_SPEXONE_L1B_SCI",
    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 OB_CLOUD
Browsing CMR needs no login. Downloading or streaming bytes needs a free Earthdata Login + the earthaccess package.