MLS/Aura Daily Hydroxyl (OH) Mixing Ratios, 2005-2014, Near-Global Coverage

ML3DBOH is the EOS Aura Microwave Limb Sounder daily binned hydroxyl (OH) mixing ratio product from NASA. Data coverage is continuous from August 2005 to December 2009, with additional 30-day collection periods in 2011-2014. The data provides near-global spatial coverage from -82 to +82 degrees latitude with a 4° by 5° resolution and a vertical range from 31.6 to 0.00316 hPa.

Use Cases

• Modeling atmospheric hydroxyl radical concentrations based on near-global satellite measurements.
• Analyzing temporal trends in OH mixing ratios from 2005-2014 based on the specified time range.
• Studying vertical profiles of atmospheric chemistry based on data from 31.6 to 0.00316 hPa.
• Correlating hydroxyl data with other atmospheric variables based on the gridded, binned data structure.

Strengths

• Continuous daily data from August 2005 to December 2009.
• Near-global spatial coverage from -82 to +82 degrees latitude.
• Data files are archived in netCDF4 format, compatible with HDF5 readers and tools.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Primary data collection ended in 2009, with only brief 30-day periods in subsequent years.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Derived from radiances measured by the THz radiometer on the EOS Aura Microwave Limb Sounder (MLS) satellite.

Time Range

August 2, 2005 to December 12, 2009, with 30-day periods in August/September of 2011, 2012, 2013, and 2014.

Freshness

Last updated 2026-03-13 00:33:21.761420; freshness should be verified.

Geography

Near-global (-82 to +82 degrees latitude), 4° latitude by 5° longitude resolution.