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This page should describe Validation Tests performed for this stand alone feature and should provide links to all the result pages.

Summary

The Linoz_MAM3 capability was run for 1850 and 2000 using the cameronsmith1/atm/Ozone-hole-Linoz-v2 branch at ne30 resolution.

The ozone simulated by ACME with Linoz is validated by comparing the simulated ozone field against historical observations:

  • atmospheric ozone columns (monthly-mean maps),
  • zonal-mean ozone distribution (monthly-means),
  • Area of Antarctic ozone hole (historical trends and interannual variability),
  • Degree of ozone depletion (historical trends and interannual variability).

The criteria for matching is if the difference compared with observations is comparable (or better) than the published ACCMIP simulations with the LLNL-superfast mechanism.

The validation passes the criteria.

Validation Test 1: Atmospheric Ozone Columns

Date last modified:   

Contributors: Philip Cameron-Smith (Unlicensed)

Provenance:  cameronsmith1/atm/Ozone-hole-Linoz-v2 branch at ne30 resolution

 

              OMI Ozone column observations (circa 2000)

 

 

                 ACME Linoz_MAM3 ozone columns (2000)

These are maps that correspond to the OMI maps above.   The units are Dobson Units.

The missing contents and spurious labels are artifacts of UVCDAT.

 

                  ACCMIP Ozone Columns by month (2000)

 

Both the older ACCMIP and current ACME simulations tend to get column ozone a little bit too thick.  This is at least partly due to the poor resolution in the upper stratosphere in both models.  A higher vertical resolution for ACME should improve the ozone simulations.


Validation Test 2: Zonal-Mean Ozone Distribution 

Date last modified:   

Contributors: Philip Cameron-Smith (Unlicensed)

Provenance: cameronsmith1/atm/Ozone-hole-Linoz-v2 branch at ne30 resolution

 
 

     SBUV Satellite Observations of Zonal-Mean Monthly-Mean Ozone (1970-2014)

             ACME Zonal-Mean Stratospheric Ozone (2000)

 

Note: The vertical axis is from 150 mbar to 3 mbar.  The units are in mol/mol.

 

           ACCMIP Zonal Mean Stratospheric Ozone (2000)


Validation Test 3: Extent of Antarctic Ozone Hole

Date last modified:   

Contributors: Philip Cameron-Smith (Unlicensed)

Provenance: cameronsmith1/atm/Ozone-hole-Linoz-v2 branch at ne30 resolution

 

 

 

Validation Test 4:  Ozone Depletion Level

Date last modified:   

Contributors: Philip Cameron-Smith (Unlicensed)

Provenance: cameronsmith1/atm/Ozone-hole-Linoz-v2 branch at ne30 resolution


 CMDL Ozonesonde observations of Ozone Hole Column                                

 

NOTE:  This is the most extreme ozone hole ever observed.

 

                  ACME Stratospheric Ozone Hole Columns

             ACCMIP Stratospheric Ozone Hole Columns

 

 

 

      ACME Antarctic O3 column (DU) time-series for September-means (2000)

NOTE: the x-axis is simulation year, and the y-axis is the ozone column (DU). 

 

      ACCMIP Antarctic O3 column (DU) time-series for September-means (2000)

   ACME Antarctic O3 column (DU) time-series for September-means (1850)

NOTE:  The verticle scale is different for the 1850 plots.   This is broadly consistent with the observed trend, although we don't have much data prior to the CFC era.


   ACCMIP Antarctic O3 column (DU) time-series for September-means (1850)

 

 

 

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