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A comprehensive evaluation report of the 48r1 e-suite, documenting all the changes and their impact on the forecasts, is in preparation and will be provided before the implementation date. Based on the evaluation of the testing of all individual changes and the preliminary evaluation of the final e-suite, the following aspects for key species should be noted:
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has now been provided and can be found here: Upgrade Verification Note. It summarizes the impact as follows: The aerosol optical depth evaluation shows improvements for most regions. The Angstrom exponent, which is a measure representative of the aerosol size distribution, shows some improvement on the global scale but over the Sahara the performance deteriorates showing a too large fraction of coarse particles. Particulate matter (PM10 and PM2.5) at the surface is reduced in e-suite, which led to worse performance in East Asia and similar performance over North America and Europe. Surface ozone and tropospheric ozone shows similar performance. Stratospheric ozone and total column ozone have improved against observations, especially in the Tropics. The performance for CO has generally improved against all observations, except MOPITT. NO2 and SO2 both show improved validation results against multiple observations. The overestimation of HCHO in the Tropics is more pronounced in the e-suite compare to TROPOMI. Finally, the UV evaluation shows only minor changes.
Scorecard for the relative performance of the e-suite versus the performance of the o-suite against observations. Meaning of the “relative score” symbols: (++) e-suite performs significantly better than the o-suite (+) e-suite shows small improvements, (n) (neutral) no significant difference between o-suite and e-suite, (-) score is somewhat degraded in the e-suite, (–) e-suite performs significantly worse than the o-suite. Remote: Remote Sensing from surface station, AOD: Aerosol Optical Depth at 550nm, Angstrom exponent between 440nm and 870nm, PM10: Particulate matter less than 10 microns, PM2.5: Particulate matter less than 2.5 microns
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Technical details of the new cycle
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