MLS/Aura Daily Binned Hydrogen Cyanide Mixing Ratios on Zonal Grids

ML3DZHCN is the EOS Aura Microwave Limb Sounder daily binned product for hydrogen cyanide mixing ratios. The data provides near-global coverage from -82 to +82 degrees latitude at 4-degree increments, with a vertical range from 21.5 to 0.1 hPa. It is produced by NASA and archived in netCDF4 format, with each file containing one year of data across four group objects for different zonal and vortex averages.

Use Cases

• Analyze global distribution and trends of hydrogen cyanide based on near-global latitude coverage.
• Study vertical profiles of atmospheric trace gases based on data binned on pressure and potential temperature grids.
• Investigate polar vortex chemistry using the vortex average vs potential temperature group.
• Perform time-series analysis of HCN for climate studies based on daily binned data spanning years.

Strengths

• Near-global spatial coverage from -82 to +82 degrees latitude.
• Data is binned on multiple grids (lat vs pressure, lat vs potential temperature) providing structured analysis views.
• Each file contains a full year of data, facilitating longitudinal study.
• Archived in netCDF4 format, which is compatible with standard HDF5 tools.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment for large-scale ML tasks.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Derived from radiances measured by the 190 GHz radiometer on the EOS Aura Microwave Limb Sounder satellite.

Time Range

Data files contain one year of data; specific years are not stated.

Freshness

Last updated 2026-03-13 00:33:23.869972; freshness should be verified.

Geography

Near-global coverage from -82 to +82 degrees latitude at 4-degree zonal increments.