Sakiko Ishino

Background

Publications here.

CV

Google scholar

Web of Science

Research interest

My research interests are in chemistry aspects of aerosol formations and growth in pristine environment, as well as in deciphering chemical indices recorded in ice cores in the context of historical changes of aerosols. In a specific focus, we have developed understanding of formation processes of sulfate, a key participant for both new particle formation and particle growth through cloud processing, in the Antarctic atmosphere. By comparing the oxygen isotopes (17O-excess) of sulfate simulated by GEOS-Chem to those observed in the present Antarctic troposphere, we have found a missing reaction, sulfate formation from oxidation of methanesulfonate (MSA) which was often recognized as an end-product. My ultimate goal is to address constraints on pre-industrial state of aerosols, which hold a major uncertainty in projecting future climate changes.


Keywords: Sulfate, Dimethyl sulfide, Ice core, 17O-excess (Δ17O), Stable sulfur isotopes (δ34S, Δ33S, Δ36S), Antarctica, Southern Ocean, Aerosol, Oxidants


Research field: Atmospheric Chemistry, Cryosphere, Isotope Geochemistry


More about research topics here.

Honors and Awards

Experience

2021 - present: Associate member of SCOR Working Group #163 “Coupling of ocean-ice-atmosphere processes: from sea-Ice biogeochemistry to aerosols and Clouds (CIce2Clouds)” 


2021 - present: Committee of JpSAC working group for gender equality and human resource development 


2019 Dec. - 2020 Mar.: The 61st Japanese Antarctic Research Expedition, Summer Campaign at Syowa station, supported by National Institute of Polar Research (NIPR) 


2017 - 2019: Co-Chair of Early Career Program Organizing Committee of the 2018 joint 14th iCACGP Quandrennial Symposium and 15th IGAC Science Conference (link)


2016 Dec. - 2017 Jan.: 2016/2017 Summer Campaign TA67 at Dumont d’Urville and Concordia stations, supported by French Polar Institute Paul-Emile Victor (IPEV)