d023·dataset

The ozone layer, high up

MLS L2 Stratospheric Ozone

GES DISC ML2O3 along-orbit ~165 km × ~3 km cross-track (limb-emission geometry) ~3500 profiles/day HDF5 atmospherestratospheric-chemistryozone

Stratospheric O3 vertical profiles for WMO ozone assessments and Antarctic ozone-hole monitoring.

MLS L2 Stratospheric Ozone

Stratospheric O3 vertical profiles for WMO ozone assessments and Antarctic ozone-hole monitoring.

Access

Python (earthaccess): short_name='ML2O3'
Portal: https://disc.gsfc.nasa.gov/datasets/ML2O3_005/summary

Gotchas

Limb-emission geometry — vertical resolution ~3 km, horizontal ~165 km
Use the MLS quality flag (Status, Quality, Convergence)
v5 is current

Sources

https://disc.gsfc.nasa.gov/datasets/ML2O3_005/summary

The access details, code, and sources below are kept in the original English for technical accuracy.

Quick access (cloud-direct)

ml2o3_access.py

import earthaccess
earthaccess.login(strategy="netrc")

results = earthaccess.search_data(
    short_name="ML2O3",
    bounding_box=(-122.5, 37.2, -121.8, 37.9),
    temporal=("2024-01-01", "2024-12-31"),
)
files = earthaccess.open(results)   # stream from GES DISC

Browsing CMR needs no login. Downloading or streaming bytes needs a free Earthdata Login + the earthaccess package.

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