Societies/Associations
- President, Korean Meteorological Society (KMS) (Jan. 2024 - Dec. 2025)
- Executive Vice President (President Elect), Korean Meteorological Society (KMS) (Jan. 2023 - Dec. 2023)
- Vice President, Korean Meteorological Society (KMS) (Jan. 2022 - Dec. 2022)
- President, East Asian Weather Research Association (June 2023 - Oct. 2024)
- Honorary Auditor, Asia-Oceania Geosciences Society (AOGS) (Aug. 2015 - Jul. 2017)
- Chair, International Affairs Committee, Korean Meteorological Society (KMS) (Jan. 2014 - Dec. 2014)
- President, Atmospheric Sciences Section, Asia-Oceania Geosciences Society (AOGS) (Aug. 2012 - Jul. 2014)
- Vice President, Atmospheric Sciences Section, Asia-Oceania Geosciences Society (AOGS) (Aug. 2011 - Jul. 2012; Aug. 2014 - Present)
- Chair, Development and Planning Committee, Korean Meteorological Society (KMS) (Jan. 2008 - Dec. 2008)
- President, Oklahoma Chapter, Korean-American Scientists and Engineers Association (KSEA) (1997 - 1998)
- Member, Asia-Oceania Geosciences Society (AOGS)
- Member, American Geophysical Union (AGU)
- Member, American Meteorological Society (AMS)
- Member, Korean Meteorological Society (KMS)
- Member, Korean Society of Oceanography (KSO)
- Member, Korean Society for Atmospheric Environment (KOSAE)
Editorial/Review Services
- Academic Editor, Remote Sensing, MDPI (Oct. 2020 - Present)
- Editor, Modeling Earth Systems and Environment, Springer (Jan. 2015 - Present)
- Associate Editor, Scientific Online Letters on the Atmosphere (SOLA), Meteorological Society of Japan (Aug. 2009 - May 2024)
- Associate Editor, Geoscience Letters, Asia-Oceania Geosciences Society (AOGS) (Jul. 2013 - Jul. 2016)
- Editor-in-Chief, Atmosphere, Korean Meteorological Society (Jan. 2006 - Jan. 2009)
- Editor, Atmosphere, Korean Meteorological Society (Jan. 2006 - Dec. 2010)
- Editor, Asia-Pacific Journal of Atmospheric Sciences (APJAS), Korean Meteorological Society (Jan. 2006 - Dec. 2010)
- Editor, Asian Meteorology Online Newsletter (AMON) (Jan. 1997 - Present)
- Reviewer, Bulletin of American Meteorological Society, Monthly Weather Review, Journal of Atmospheric & Oceanic Technology, Journal of Hydrometeorology, Weather Analysis and Forecasting, Tellus A, SOLA, Asia-Pacific Journal of Atmospheric Sciences, Atmosphere, etc.
Visiting
- Senior Scientist in Residence, Chapman University (Feb. 2009 - Feb. 2010; Sabbatical
leave from EwhaWomans University) - ASEM-DUO Fellow, University of Torino, Italy (Jun. - Jul. 2005)
- Invited Visiting Scientist, Meteorological Research Institute, Korea Meteorological Administration (Mar. 23 - May 18, 1997)
Advisory Committee
- Advisory Board member, Institute for Earth, Computing, Human and Observing (ECHO), Chapman University, USA (May 2024 - Present)
- Policy Committee, Korea Meteorological Administration (Aug. 2022 - Present)
- Board member, Korea Institute of Atmospheric Prediction System (Feb. 2012 - Jan. 2014)
- Advisory Committee, Forecast Bureau, Korea Meteorological Administration (Jan. 2005 - Present)
- Supercomputer Users Committee, Korea Institute of Sci. & Tech. Information (Oct. 2005 - Present)
Meeting Organization
- Scientific Steering Committee, 16th Int. Conf. on Mesoscale Convective Systems (ICMCS-XVI), October 14-17, 2024, Gyeongju, Korea
- Convener, 7th Ewha International School on Data Assimilation (EISDA 2024), July 1-5, 2024, Seoul, Korea
- Convener, 17th Sasaki Symposium on Data Assimilation for Atmospheric, Oceanic, and Hydrologic Applications, 21th Annual Meeting, Asia-Oceania Geophysics Society, June 23-28, 2024, Pyeongchang, Korea
- Convener, 6th Ewha International School on Data Assimilation (EISDA 2023), August 7-11, 2023, Seoul, Korea
- Convener, 16th Sasaki Symposium on Data Assimilation for Atmospheric, Oceanic, and Hydrologic Applications, 20th Annual Meeting, Asia-Oceania Geophysics Society, July 30-August 4, 2023, Singapore
- Scientific Committee, 15th Int. Conf. on Mesoscale Convective Systems (ICMCS-XV), May 22-25, 2023, Fort Collins, USA
- Convener, 15th Sasaki Symposium on Data Assimilation for Atmospheric, Oceanic, and Hydrologic Applications, Virtual 19th Annual Meeting, Asia-Oceania Geophysics Society, August 1-5, 2022, Online
- Convener, 14th Sasaki Symposium on Data Assimilation for Atmospheric, Oceanic, and Hydrologic Applications, Virtual 18th Annual Meeting, Asia-Oceania Geophysics Society, August 1-6, 2021, Online
- Scientific Committee, 14th Int. Conf.
on Mesoscale Convective Systems and High-Impact Weather in East Asia (ICMCS-XIV), April 28-30, 2021, Nanjing, China - Convener, 13th Sasaki Symposium on Data Assimilation for Atmospheric, Oceanic, and Hydrologic Applications, 17th Annual Meeting, Asia-Oceania Geophysics Society, June 28 - July 4, 2020, Hongcheon, South Korea (Cancelled due to COVID-19)
- Convener, 12th Sasaki Symposium on Data Assimilation for Atmospheric, Oceanic, and Hydrologic Applications, 16th Annual Meeting, Asia-Oceania Geophysics Society, July 28 - August 2, 2019, Singapore
- Scientific Committee, Conf.
on Mesoscale Convective Systems and High-Impact Weather in East Asia (ICMCS-XIII), March 6-8, 2019, Okinawa, Japan - Convener, 11th Sasaki Symposium on Data Assimilation for Atmospheric, Oceanic, and Hydrologic Applications, 15th Annual Meeting, Asia-Oceania Geophysics Society, June 3-8, 2018, Hawaii, USA
- Convener, 10th Sasaki Symposium on Data Assimilation for Atmospheric, Oceanic, and Hydrologic Applications, 14th Annual Meeting, Asia-Oceania Geophysics Society, August 6-11, 2017, Singapore
- Convener, 9th Sasaki Symposium on Data Assimilation for Atmospheric, Oceanic, and Hydrologic Applications, 13th Annual Meeting, Asia-Oceania Geophysics Society, July 31 - August 5, 2016, Beijing, China
- Organizing Committee, Conf.
on Mesoscale Convective Systems and High-Impact Weather in East Asia (ICMCS-XI), April 25-28, 2016, Busan, Korea - Convener, 8th Sasaki Symposium on Data Assimilation for Atmospheric, Oceanic, and Hydrologic Applications, 12th Annual Meeting, Asia-Oceania Geophysics Society, August 2-7, 2015, Singapore
- Convener, 6th International Winter School and Workshop on Climate/
Environment - Convener, 3rd Ewha International School on Data Assimilation (EISDA 2014), July 1-3, 2014, Seoul, Korea
- Convener, 7th Sasaki Symposium on Data Assimilation for Atmospheric, Oceanic, and Hydrologic Applications, 11th Annual Meeting, Asia-Oceania Geophysics Society, July 28 - August 1, 2014, Sapporo, Japan
- Convener, 5th International Winter School and Workshop on Climate/
Environment Change, December 18-21, 2013, Seoul, Korea - Convener, 2nd Ewha International School on Data Assimilation (EISDA 2013), August 19-21, 2013, Seoul, Korea
- Convener, 6th Sasaki Symposium on Data Assimilation for Atmospheric, Oceanic, and Hydrologic Applications, 10th Annual Meeting, Asia-Oceania Geophysics Society, June 24-28, 2013, Brisbane, Australia
- Convener, 4th International Winter School and Workshop on Climate/
Environment Change, December 19-21, 2012, Seoul, Korea - Convener, 1st Ewha International School on Data Assimilation (EISDA 2012), August 22-24, 2012, Seoul, Korea
- Convener, 5th Sasaki Symposium on Data Assimilation for Atmospheric, Oceanic, and Hydrologic Applications, 9th Annual Meeting, Asia-Oceania Geophysics Society, August 13-18, 2012, Resort Sentosa, Singapore
- Convener, Korea-Italy Symposium on Global Climate Change, May 22, 2012, Seoul, Korea
- Convener, 3rd International Winter School and Workshop on Climate/
Environment Change, December 20-23, 2011, Seoul, Korea - Convener, 4th Sasaki Symposium on Data Assimilation for Atmospheric, Oceanic, and Hydrologic Applications, 8th Annual Meeting, Asia-Oceania Geophysics Society, August 8-12, 2011, Taipei, Taiwan
- Scientific Committee, Conf.
on Mesoscale Convective Systems and High-Impact Weather in East Asia (ICMCS-VIII), March 7-9, 2011, Nagoya, Japan - Convener, 2nd International Winter School and Workshop on Climate/
Environment Change, January 4-6, 2011, Seoul, Korea [photos] - Convener, 3rd Sasaki Symposium on Data Assimilation for Atmospheric, Oceanic, and Hydrologic Applications, 7th Annual Meeting, Asia-Oceania Geophysics Society, July 5-9, 2010, Hyderabad, India
- Convener, International Joint Seminar on Climate/
Environment Change, January 14, 2010, Pyungchang, Korea - Convener, International Winter School on Climate/
Environment Change, January 12-13, 2010, Pyungchang, Korea - Program Committee Chair and Convener, Int.
Conf .on Mesoscale Convective Systems and High-Impact Weather/Climate in East Asia (ICMCS-VII), November 11-13, 2009, Seoul, Korea - Co-convener, 2nd Italy-Korea Joint Seminar on Climate Change, December 14-16, 2008, Torino, Italy
- Convener, 2nd Sasaki Symposium on Data Assimilation for Atmospheric, Oceanic, and Hydrologic Applications, 5th Annual Meeting, Asia-Oceania Geophysics Society, June 16-20, 2008, Busan, Korea
- Convener, 1st Korea-Italy Joint Seminar on Climate Change, December 5, 2007, Seoul, Korea
- Convener, 1st Sasaki Symposium on Data Assimilation for Atmospheric, Oceanic, and Hydrologic Applications, 4th Annual Meeting, Asia-Oceania Geophysics Society, July 31 - August 4, 2007, Bangkok, Thailand
- Convener, Session on Data Assimilation for Atmospheric, Oceanic, and Hydrologic Applications, 2nd Annual Meeting, Asia-Oceania Geophysics Society, June 20-24, 2005, Singapore
- Convener, Minisymposium on Atmospheric Data Assimilation and Retrieval, 5th SIAM Conference on Mathematical and Computational Issues in the Geosciences, March 24-27, 1999, San Antonio, Texas
- Organizer and Leading Speaker, ARPS Workshop for Korean Users, April 14-15, 1997, Korea Meteorological Administration, Seoul, Korea
- Organizing Committee, Joint US-Korea Workshop on Storm- and Mesoscale Weather Analysis and Prediction (1995 - Present)