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Aqua-Planet Experiment Project Ozone High-Top Extension

- An idealized, time-invariant, zonally averaged, zonally symmetric ozone dataset based on that used for the Aqua-Planet Experiment Project (, see also doi:10.5065/D61834Q6), but expanded vertically for use in high-topped models.

- To allow high-top models to utilize the dataset, a WACCM ozone data set was blended with the original APE ozone data set. The WACCM data (/glade/p/cesm/chwg_dev/tilmes/climo/, provided by Simone Tilmes) is from an Earth configuration. A long-term climatology is constructed by averaging in time and across longitudes, and made symmetric about the equator. The original APE data set and this WACCM climatology are blended by interpolating the APE data set to the WACCM grid and using the interpolated APE data to mask the WACCM data. This effectively uses the WACCM data for upper levels and retains the APE data at the lower levels. The data is then converted from hybrid-sigma levels to pressure levels and expanded to cover 3 spatial dimensions and "time."

- The data set is mapped to the CAM finite volume nominal 2-degree (144x96) horizontal grid
- The vertical grid is 69 pressure levels between 1000.00 and 5e-06 hPa
- 12 copies of the time-invariant field created to represent a "monthly climatology" within the dataset
- CAM uses the reformatted dataset as a monthly climatological ozone boundary dataset. Input is interpolated to the model grid and model time as CAM is running.

Version 2 was published on 4/12/2018. The previous version (​) was found to be in error and has been replaced with
10.5065/D64X5653 Permanent Link, Citation
Date Created
2016-10-11 11:36:37
Date Last Updated
2018-04-12 12:06:58
Related Activities
Project - CCSM
Version Date Publisher Published State Source
Temporary Version 2016-10-11 11:36:37 Ilana Stern Published