Chile Niño/Niña — Australian Meteorological and Oceanographic Society

Chile Niño/Niña — Australian Meteorological and Oceanographic Society

Chile Niño/Niña

Chile Niño/Niña (#3)

Jiaqing Xue ¹ , Jingjia Luo ¹ , Chaoxia Yuan ¹ ² , Toshio Yamagata ¹ ²

Key Laboratory of Meteorological Disaster of Ministry of Education, Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Institute for Climate and Application Research (ICAR)，Nanjing University of Information Science and Technology, Nanjing, China
Application Laboratory, Japan Agency for Marine-Earth Science and Technology, Yokohama, Japan

A new ocean–atmosphere coupled mode is identified in the coastal region of the Southeast Pacific. This coastal mode displays remarkable interannual sea surface temperature (SST) variability off Chile, and we call this Chile Niño/Niña in analogy of equatorial warm/cold ENSO events. It shows a prominent seasonal phase locking nature with the largest variability in austral summer from January to March. The warm (cold) SST anomalies grow and decay with anomalous southward (northward) alongshore surface winds in association with the decreased (increased) cross-shore pressure gradient and coastal ocean downwelling (upwelling), suggesting the existence of the coastal Bjerknes feedback. During the developing phase of Chile Niño (Niña), the warm (cold) SST anomalies lead to increased (decreased) downward shortwave radiation through SST–low stratus cloud thermodynamic feedback. Meanwhile, the reduced (increased) surface wind speed off Chile shallows (deepens) the mixed-layer depth and varies the heat capacity of the surface mixed-layer. The combined effects of increased (decreased) shortwave radiation anomaly and thinner (thicker) mixed-layer depth also contribute to the development of Chile Niño (Niña). The present study reports the existence of an intrinsic coastal ocean–atmosphere coupled mode off Chile, adding a new member to the “coastal Niño/Niña” family.

Authors contributing to this abstract.

Xue, J

Luo, J

Yuan, C

Yamagata, T

Education 1971 - B.S Major in Science, The University of Tokyo 1973 - M.S Major in Geophysics, The University of Tokyo 1977 - D.S Major in Geophysics, The University of Tokyo Go to top of page Professional Experience 1975-1979 Research Associate, Research Institute for Applied Mechanics, Kyushu University 1979-1991 Associate Professor, Research Institute for Applied Mechanics, Kyushu University 1981 Sept.- 1983 Aug., 1984 Jul.-Dec Visiting Research Scholar of Geophysical Fluid Dynamics Program, Princeton University 1991-1994 Associate Professor, Graduate School of Science, The University of Tokyo 1994 Apr. - 2012 Mar. Professor, Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo 1997 Oct. - 2003 June Program Director, International Pacific Research Center (Honolulu) 1997 Oct. - 2009 Mar. Program Director, Frontier Research Center for Global Change, Japan Agency for Marine-Earth Science and Technollogy 1998 Head of the Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo 1999, 2005 Head of the Department of Earth and Planetary Science, Faculty of Science, The University of Tokyo 2007 Apr. - 2009 Mar. Vice Dean , Graduate School of Science, The University of Tokyo 2009 Apr. - 2012 Mar. Head of Application Laboratory, Japan Agency for Marine-Earth Science and Technology 2009 Apr. - 2012 Mar. Dean, School of Science, The University of Tokyo 2012 Apr. -2017 Mar. Director, Application Laboratory, Japan Agency for Marine-Earth Science and Technology 2017 Apr. - Project Principal Scientist, Application Laboratory, Japan Agency for Marine-Earth Science and Technology 2017 Apr. - Project Professor, Unit of the Synergetic Studies for Space, Kyoto University Go to top of page Further Professional Experiences Visiting Lecturer of Department of Science, Tohoku University Visiting Lecturer of Department of Earth and Planetary Science, Hokkaido University Visiting Lecturer of Department of Earth and Planetary Science and Department of Physics, Kyushu University Visiting Professor of Hydrographic Office, Maritime Safety Agency, 1994 - 2004 Official of Ministry of Foreign Affairs, 1992 Technical Official of Prime Minister's Office, 1998 Visiting Lecturer of the Saint Sophia University, 2000 - 2002 , 2005, 2006 Visiting Professor of Center for Marine Science and Development, Udayana University (Denpasar, Indonesia), 2005 Sep. - present Awards and Honors 1976 Hidaka Marine Science Foundation Fellowship 1976 GFD Fellow of WHOI, U.S.A. 1981 Okada Memorial Prize of the Oceanographic Society of Japan 1984 Yoshida Science Foundation Fellowship 1986 Toray Science Foundation Fellowship 1987 Society Prize of the Meteorological Society of Japan 1989 Burr Steinbach Scholar of MIT/WHOI, U.S.A. 1997 Society Prize of the Oceanographic Society of Japan 2000 Best Poster Award for "Interannual variability in the subsurface tropical Indian Ocean" (PORSEC 2000, Dec. 8, Goa India) 2001 Mitsubishi Foundation Fellowship 2004 The Sverdrup Gold Medal of American Meteorological Society 2004 Fellow of the American Meteorological Society 2004 Thomson Scientific Research Front Award 2004 ( Leading 16 Japanese Scientists in Emerging Research Fronts ) 2005 Medal with Purple Ribbon from the Emperor of Japan 2008 Fellow of the American Geophysical Union 2008 Techno-Ocean Award 2010 Fellow of the Japan Society of Fluid Mechanics 2012 Emeritus Professor of the University of Tokyo 2012 Professor P.R. Pisharoty Distinguished Lecturer (Indian Meteorological Society, Pune Chapter / 16 November 2012) 2013 Foreign associate member of Académie de Marine, France 2014 Fellow of Japan Geoscience Union, 2014 April 2015 Prince Albert I Medal 2016 Honorary Professor of Nanjing University of Information Science and Technology 2018 Honorary Member, The Oceanographic Society of Japan 2019 Foreign Academician, Nanjing University of Information Science and Technology