MACC stratospheric ozone service

Most recent quick-looks for O3 at 50 hPa

north hemisphere
plot MACC o-suiteplot BASCOEplot SACADA

Context and content of this MACC service

The MACC project (Monitoring Atmospheric Composition and Climate) provides the pre-operational atmospheric environmental service of COPERNICUS. It is operating and improving the data analysis and modelling systems for a number of atmospheric trace gases, among which O3, NO2, CO, SO2 and formaldehyde. It is funded under the 7th Framework Programme of the European Union.

The MACC stratospheric ozone service consists of two main parts:

  1. The quasi-operational stream includes vertically resolved gridded fields and total ozone columns from analyses by the 4D-Var models IFS-MACC, BASCOE, and SACADA, as well as total ozone columns from the Kalman-filter model TM3DAM. The quasi-operational stream additionally provides L2 O3 data from OMI, SCIAMACHY, and GOME-2, in continuation of the PROMOTE service.
  2. The historic data records comprise both total ozone columns from long-term reanalyses starting in 1978 based on multiple instruments via the TM3DAM approach and 3D gridded fields and total ozone columns from the three above-mentioned 4D-Var models.

Validation of MACC stratospheric ozone (and related species) is performed with respect to independent data:

  • Independent observational satellite (ACE, HALOE, POAM, TOMS) and in-situ data (ozone sondes, lidar)
  • First guess values (i.e. assimilated Level-2 ozone data)
  • Independent model results (BASCOE, SACADA, TM3DAM)

Validated models include the IFS-MACC NRT stream (started on 2008-07-06, updated daily) and reanalysis (starting from 2003-01-01, ending a few months before current date).