GOZCARDS Merged Hydrogen Chloride Satellite Data on a Vertical Pressure Grid

Merged hydrogen chloride (HCl) concentration data from three satellite instruments spanning from 1991 onward. The product provides zonal means, standard deviations, and min/max values on a vertical pressure grid from 147 to 0.5 hPa. This Level 3 dataset is produced by NASA and distributed by the GES DISC.

Use Cases

• Analyzing long-term trends in stratospheric hydrogen chloride based on merged satellite records.
• Studying the vertical distribution of HCl concentrations across pressure levels from 147 to 0.5 hPa.
• Validating atmospheric chemistry models using zonal mean data with associated uncertainty metrics.
• Investigating inter-instrument bias and data consistency across HALOE, ACE-FTS, and Aura MLS sources.

Strengths

• Data merges records from three established satellite instruments: HALOE (1991-2005), ACE-FTS (2004-onward), and Aura MLS (2004-onward).
• Provides derived statistics including zonal means, standard deviation, and minimum/maximum values.
• Covers a specific vertical pressure range for HCl from 147 to 0.5 hPa.

Limitations

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

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Merging and bias removal of source data from HALOE, ACE-FTS, and Aura MLS satellite instruments.

Time Range

1991 onward

Freshness

Last updated 2026-03-13 02:30:31.732071; freshness should be verified.

Geography

Global zonal averages