Department of Information and Computer Science

Sachiko Hayashida

Research field

Atmospheric science (Meteorology, Atmospheric chemistry), Remote sensing

Research interests

Dr. Hayashida has experiences in stratospheric aerosol observation by using lidar and has been interested in the interaction of chemical processes in the atmosphere including aerosols and ozone. She started her career in National Institute for Environmental Studies, Tsukuba, Japan, and later she joined the research group lead by Dr. Susan Solomon in 1992 and 1993 at NOAA Aeronomy Laboratory, in Colorado, USA. After coming back to Japan she moved to a post in Faculty of Science, Nara Women’s University (NWU). She has been a full professor at NWU since 2001.
She received Horiuchi Award from Japan Meteorological Society in 2002 for her outstanding research on stratospheric aerosol and ozone, and her two graduate students received Outstanding Student Paper Award from American Geophysical Union at the Western Pacific Geophysics Meeting in 2000.

She is recently interested in tropospheric minor species including tropospheric ozone and related precursors, and methane. These species have lately attracted considerable attention as “short-lives climate pollutants”. Her most recent interest is atmospheric methane emission from Asia. The strength of individual sources of methane remains uncertain, in spite of the importance of the effect on global warming. Monsoon Asia, where approximately 90% of the world's rice fields are located, is one of the major source regions of methane, and further investigations are needed for the region. She is now investigating methane distribution observed by Greenhouse gases Observing SATellite (GOSAT) and other satellite sensors, focusing on Monsoon Asia, as one of the RA researchers of the GOSAT project.  She is leading a project (Characterization and Quantification of global methane emissions by utilizing GOSAT and in-situ measurements: from FY 2012 to FY 2014, and is a member of GRENE-ei (Studies on GHG emissions from biomass burning and rice paddy in East-Asia using synergy of satellite data and ground based observations:

Selected publications

  1. Nakatani, A., S.Kondo, S.Hayashida, T.Nagashima, K.Sudo, X.Liu, K.Chance, and I.Hirota,
    Enhanced Mid-latitude Tropospheric Column Ozone over East Asia: Coupled effects of stratospheric ozone intrusion and anthropogenic sources,
    Journal of the Meteorological Society of Japan, Vol. 90, No. 2, pp. 207–222, DOI:10.2151/jmsj.2012-204, 2012

  2. Hayashida, S., N.Urita, K.Noguchi, X.Liu, and K.Chance,
    Spatiotemporal Variation in Tropospheric Column Ozone over East Asia Observed by GOME and Ozonesondes,
    SOLA, 4, 117-120, 2008

  3. Hayashida, S. and T.Sugita,
    Hemispheric Contrast of Inorganic Chlorine Partitioning in the Polar Lower Stratosphere during Ozone Recovery Period Observed from Space,
    SOLA, 3, 117-120, 2007.

  4. Hayashida, S., T. Sugita, N. Ikeda, Y. Toda, and H. Irie,
    Temporal evolution of ClONO2 observed with Improved Limb Atmospheric Spectrometer (ILAS) during Arctic late winter and early spring in 1997,
    J. Geophys. Res., 112, D14311, doi:10.1029/2006JD008108., 2007.

  5. Kagawa, A. and S. Hayashida
    Analysis of ozone loss in the Arctic stratosphere during the late winter and spring of 1997, using the Chemical Species Mapping on Trajectories (CSMT) technique, 
    J. Geophys. Res., Vol.108, No.D22, 4698, doi:10.1029/2002JD002824, 2003.

  6. Saitoh, S., S. Hayashida, Y. Sasano, and L. L. Pan, 
    Characteristics of Arctic polar stratospheric clouds in the winter of 1996/1997 inferred from ILAS measurements, 
    J. Geophys. Res., Vol.107, No.D24, 8205, doi:10.1029/2001JD000595, 2002.

  7. Hayashida, S., N. Saitoh, A. Kagawa, T. Yokota, M. Suzuki, H. Nakajima, and Y. Sasano, 
    Arctic polar stratospheric clouds observed with the improved limb atmospheric spectrometer during winter 1996/1997, 
    J. Geophys. Res. Vol. 105, No.D20, 24,715-24,730, 2000.

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Address Department of Information and Computer Sciences
Nara Women's University
Kita-Uoya Nishimachi, Nara 630-8506, Japan
TEL 0742-20-3440
FAX 0742-20-3440
E-mail sachiko at mark ics. nara-wu. ac. jp
Room G314