SSiRC: Stratospheric Sulfur & its Role on Climate
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2024
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WORKSHOP ON LIDAR MEASUREMENTS IN LATIN AMERICA, 12th
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SSiRC (Stratospheric Sulphur Processes and their role in Climate) is an established APARC (Atmospheric
Processes And their Role in Climate) a core project of the WMO-WCRP (World Climate Research
Programme). SSiRC goal is to foster collaboration across observational and modelling communities
allowing a better understanding of the stratospheric aerosol layer and the processes governing its
observed variations, in particular the ones from intense explosive volcanic eruptions The SSiRC Data
Rescue Activity is aimed to recover, re-digitize and re-calibrate historic stratospheric aerosol data
sets currently not publicly available, and invite scientists to contribute to this activity and to provide
advice and expertise on how best to recover other incomplete long term observations of stratospheric
composition. The focus so far has been oriented to lidar and searchlight datasets an important
complement of space-borne measurements. So far, a total of five datasets, four from lidars and one
from a searchlight, have been rescued digitized and stored at PANGAEA, a public data repository. The
presentation briefly lists and describes the rescued datasets. Also are provided details of the cases
when a re-calibration was conducted explaining the procedure conducted and the validation of the
results. For all the rescued lidar/searchlight datasets estimates of the errors in the rescued/recalibrated
aerosol extinction profiles are provided. Another current SSiRC activity is pursuing the GloSSaC (Global
Space-based Stratospheric Aerosol Climatology) improvement. GloSSAC was created to support the
WCRP Coupled Model Intercomparison Project Phase 6 (CMIP6). The importance of filling the gap in
the SAGE II satellite aerosol extinction in the tropical stratosphere during approximated 6 months
after Pinatubo is one of the focus. The existence of the gap and its temporal extension is shown
using the available lidar profiles. The capabilities to fill the gap using lidar stratospheric aerosol profiles
is discussed, showing the improvements that will be incorporated in GloSSaC for that period. The
limitations and obstacles to conduct the proposed gap filling are discussed and the potential solutions
are also shown and discussed. Incomplete long term observations of stratospheric composition. The
focus so far has been oriented to lidar and searchlight datasets an important complement of spaceborne
measurements. So far, a total of five datasets, four from lidars and one from a searchlight,
have been rescued digitized and stored at PANGAEA, a public data repository. The presentation
briefly lists and describes the rescued datasets. Also are provided details of the cases when a recalibration
was conducted explaining the procedure conducted and the validation of the results. For
all the rescued lidar/searchlight datasets estimates of the errors in the rescued/recalibrated aerosol
extinction profiles are provided. Anther current SSiRC activity is pursuing the GloSSaC (Global Spacebased
Stratospheric Aerosol Climatology) improvement. GloSSAC was created to support the WCRP
Coupled Model Intercomparison Project Phase 6 (CMIP6). The importance of filling the gap in the SAGE
II satellite aerosol extinction in the tropical stratosphere during approximated 6 months after Pinatubo
is one of the focus. The existence of the gap and its temporal extension is shown using the available
lidar profiles. The capabilities to fill the gap using lidar stratospheric aerosol profiles is discussed,
showing the improvements that will be incorporated in GloSSaC for that period. The limitations and obstacles to conduct the proposed gap filling are discussed and the potential solutions are also shown
and discussed.
Como referenciar
ANTUNA-MARRERO, JUAN C.; LANDULFO, EDUARDO. SSiRC: Stratospheric Sulfur & its Role on Climate: Lidar data rescue and GloSSaC improvements. In: BARJA, BORIS (ed.); LANDULFO, EDUARDO (ed.); LOPES, FABIO J. da S. (ed.). In: WORKSHOP ON LIDAR MEASUREMENTS IN LATIN AMERICA, 12th, April 7-12, 2024, São Paulo, SP. Abstract... p. 31-32. Disponível em: https://repositorio.ipen.br/handle/123456789/48903. Acesso em: 30 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.