Monthly Diurnal Ozone Tendency Assimilations on Pressure Levels

1980 to present monthly diurnal means of assimilated ozone tendencies from NASA's MERRA-2 reanalysis. The dataset contains 3-hourly time-stamped fields for 42 pressure levels, produced by NASA's Global Modeling and Assimilation Office (GMAO). Data has a latency of approximately three weeks after the end of each month.

Use Cases

• Analyze the total_ozone_analysis_tendency field to validate climate model simulations of ozone layer recovery.
• Model stratospheric chemistry by correlating tendency_of_odd_oxygen_mixing_ratio_due_to_chemistry with other atmospheric state variables.
• Study ozone transport dynamics using the tendency_of_ozone_due_to_dynamics feature across the 42 pressure levels.
• Investigate ozone-humidity interactions by examining the tendency_of_odd_oxygen_due_to_moist_processes field in the troposphere.
• Assess diurnal cycles in ozone concentrations using the 3-hourly time-stamped data fields starting at 01:30 UTC.

Strengths

• Covers a continuous period from 1980 to the present, providing over 40 years of historical data.
• Provides data on 42 distinct pressure levels, offering high vertical resolution for atmospheric profiling.
• Data is produced by NASA GMAO using the GEOS 5.12.4 model, an authoritative source for reanalysis.

Limitations

• Spatial resolution is 0.625 x 0.5 degrees, which may be too coarse for regional-scale studies.
• Specific row counts, file sizes, and data volumes for user download are not provided in the description.
• Data is reprocessed, leading to filename changes that can complicate tracking specific versions.

Provenance

Source

NASA Global Modeling and Assimilation Office (GMAO) via the Goddard Earth Sciences Data and Information Services Center (GES DISC).

Collection Method

Assimilated reanalysis product generated by the Goddard Earth Observing System Model (GEOS) version 5.12.4.

Time Range

1980 - Present

Freshness

Updated monthly with a latency of ~3 weeks after the end of each month.

Geography

Global coverage on a 0.625 x 0.5 degree latitude/longitude grid.