Climate data Record of Stratospheric aerosols (CREST) Merged aerosol extinction profiles and stratospheric optical depth dataset created using data from several satellite limb and occultation instruments


The Climate data REcord of STratospheric Aerosols (CREST) is derived from data by six limb and occultation satellite instruments: SAGE II on ERBS, GOMOS and SCIAMACHY on Envisat, OSIRIS on Odin, OMPS on Suomi-NPP, and SAGE III on International Space Station. The merged dataset was generated as a contribution to the European Space Agency project CREST ( The merging of aerosols profiles is performed by transformation the aerosol datasets from individual satellite instruments to the same wavelength, i.e., 750 nm, and their homogenization by adjusting the seasonal cycles. The merged aerosol extinction coefficient is computed as the median of the adjusted data from the individual instruments. The merged time series of monthly mean aerosol extinction vertical profiles at 750 nm is provided in 10 deg latitude bands from 90S to 90N, in the altitude range from 8.5 km to 39.5 km. The time series of stratospheric optical depth is created by integration of aerosol extinction profiles from the tropopause to 39.5 km; it is also provided as monthly mean data in 10 deg latitude bands. All the aerosol climate records cover the time period from October 1984 until May 2022, and they are intended be extended in the future.

The data are collected in one netcdf-4 file.

Metadata Access
Creator Viktoria F. Sofieva, Alexei Rozanov, Monika Szelag
Instrument SAGE II on ERBS; SCIAMACHY on Envisat; GOMOS on Envisat; OSIRIS on Odin; OMPS-LP on Suomi-NPP; SAGE III on ISS
Publisher Finnish Meteorological Institute
Contributor Finnish Meteorological Institute; Viktoria Sofieva; Alexei Rozanov; Monika Szelag
Publication Year 2022
Funding Reference European Space Agency; Deutsche Forschungsgemeinschaft grant no. 398006378; The Academy of Finland decision 336798
Rights CC-BY; info:eu-repo/semantics/openAccess
OpenAccess true
Contact viktoria.sofieva(at)
Language English
Resource Type Dataset
Format nc
Size 3.4 MB; 1 file
Version 1.0
Discipline Environmental science
Temporal Coverage 1984-09-30T22:00:00.000Z 2022-05-15T09:27:20.335Z