MLS/Aura NRT Nitrous Oxide Profiles from Satellite Observations

Near-real-time nitrous oxide profiles derived from the EOS Aura Microwave Limb Sounder satellite, typically available within 3 hours of observation. The National Aeronautics and Space Administration provides near-global coverage from -82 to +82 degrees latitude, with data from the most recent 7 days online. Profiles are spaced 1.5 degrees along the orbit track and cover the vertical range from 100 to 1 hPa.

Use Cases

• Monitor near-real-time atmospheric nitrous oxide concentrations based on satellite-derived profiles
• Analyze spatial distribution of N2O across near-global latitudes based on the -82 to +82 degree coverage
• Study vertical structure of nitrous oxide in the atmosphere based on the 100 to 1 hPa pressure range
• Assess the utility of simplified retrieval algorithms for fast data delivery as described in the NRT product

Strengths

• Data latency is typically within 3 hours of observation, supporting timely analysis
• Spatial coverage is near-global, spanning from -82 to +82 degrees latitude
• Vertical coverage extends from 100 to 1 hPa, providing atmospheric profile data

Limitations

• The NRT algorithm uses a simplified fast forward model and is not as accurate as standard MLS products
• Row count is unknown, which may limit suitability assessment
• Data must be screened according to user guide recommendations for scientific use

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Derived from the EOS Aura Microwave Limb Sounder (MLS) satellite instrument.

Time Range

Near-real-time, with the most recent 7 days available.

Freshness

The most recent 7 days of data are available online; last metadata update was 2026-03-13.

Geography

Near-global, from -82 degrees to +82 degrees latitude.