Tropospheric ozone column datasets from combination of nadir and limb satellites data
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Contact person:
Viktoria Sofieva (firstname.lastname(at)fmi.fi)

Data access: nsdc.fmi.fi/data/data_sunlit
Username: sunlit_user

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Product name: tropospheric ozone column(TrOC) from TROPOMI and limb satellites (FMI-SUNLIT-TrOC_TROPOMI_LIMB)

Product specification:
Variables:
- Latitude
- Longitude
- TrOC (tropospheric ozone column, DU)
- TrOC_err (estimated uncertainty of the tropospheric ozone column, DU) 		Period:
2018-2020
Temporal resolution:
month
Spatial resolution:
1°x1°



Product name: tropospheric ozone column (TrOC) from OMI and
limb satellites (FMI-SUNLIT-TrOC_OMI_LIMB)

Product specification:
Variables:
- Latitude
- Longitude
- TrOC (tropospheric ozone column, DU)
- TrOC_err (estimated uncertainty of the tropospheric ozone column, DU) 		Period:
2004-2020
Temporal resolution:
month
Spatial resolution:
1°x1°



Product name: Product name: stratospheric ozone column from limb
satellites (FMI-SUNLIT-SOC_LIMB)

Product specification:
Variables:
- Latitude
- Longitude
- SOC (stratospheric ozone column, DU)
- SOC_err (estimated uncertainty of the stratospheric ozone column, DU) 		Period:
2004-2020
Temporal resolution:
day
Spatial resolution:
1°x1°

Overview:

The global tropospheric ozone column datasets are created in the framework of ESA project SUNLIT: Synergy of Using Nadir and Limb Instruments for Tropospheric ozone monitoring. The datasets are created using combination of total ozone column from OMI and TROPOMI with stratospheric ozone profile datasets from several limb-viewing instruments (MLS, OSIRIS, MIPAS, SCIAMACHY, OMPS-LP, GOMOS).

Ozone profiles from limb satellite instruments are homogenized, i.e., biases are removed and validation /a-posteriori estimation of random uncertainties is performed. The high spatial and vertical resolution dataset of ozone profiles is created via kriging-type interpolation of the limb profiles from each day to 1°x1° horizontal grid. The daily 1°x1° stratospheric ozone column dataset from limb instruments is evaluated in two ranges: from tropopause and from 3 km below the tropopause.