MLS/Aura Level 2 Methyl Cyanide (CH3CN) Mixing Ratio V005 (ML2CH3CN) at GES DISC

Published by NASA/GSFC/SED/ESD/TISL/GESDISC | National Aeronautics and Space Administration | Metadata Last Checked: September 14, 2025 | Last Modified: 2025-09-11

ML2CH3CN is the EOS Aura Microwave Limb Sounder (MLS) standard product for methyl cyanide derived from radiances measured by the 640 GHz radiometer. The data version is 5.0. Data coverage is from August 8, 2004 to current. Spatial coverage is near-global (-82 degrees to +82 degrees latitude), with each profile spaced 1.5 degrees or ~165 km along the orbit track (roughly 15 orbits per day). The recommended useful vertical range is between 46.4 and 1.0 hPa, and the vertical resolution ranges between ~5 km in the lower stratosphere and ~10 km in the upper stratosphere. Users of the ML2CH3CN data product should read section 3.4 of the EOS MLS Level 2 Version 5 Quality Document for more information.The data are stored in the version 5 EOS Hierarchical Data Format (HDF-EOS5), which is based on the version 5 Hierarchical Data Format, or HDF-5. Each file contains one swath object (profile data), with a set of data and geolocation fields, swath attributes, and metadata.

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earth-science-atmospheric-chemistry-atmosphere-carbon-and-hydrocarbon-compounds-methyl-cyanide

Complete Metadata

bureauCode	[ "026:00" ]
identifier	10.5067/Aura/MLS/DATA2503
landingPage	https://docserver.gesdisc.eosdis.nasa.gov/public/project/Images/ML2CH3CN_005.png
programCode	[ "026:000" ]
spatial	["CARTESIAN",[{"WestBoundingCoordinate":-180,"NorthBoundingCoordinate":82,"EastBoundingCoordinate":180,"SouthBoundingCoordinate":-82}]]
temporal	2004-08-02/2004-08-02
theme	[ "Earth Science" ]