Co-chair, Global Energy and Water EXchanges (GEWEX) Project Scientific Steering Group, 2021-present
Chair, Tiger Team (2022), Science Team (2023), Interim Scientific Steering Committee (2024), SSC member (2025-2027) on Global Precipitation Experiment (GPEX) - A new Lighthouse Activity of the World Climate Research Programme (WCRP), 2022-present
Chair (2023-present) and Member (2016-2023), Science Committee of the DOE PNNL Earth & Biological Sciences Directorate
Member, WMO Research Board Task Team on Hydrology Research, 2024 – 2025
Member, AMS Committee on Ethics, 2021-2024
Member, Executive Committee, UA Department of Hydrology and Atmospheric Sciences (HAS), 2016-present
Member, HAS Faculty Promotion and Tenure Committee, 2018-present
Member, HAS Awards (Faculty and Staff) Committee, 2022-present
Member, NASA Earth Science Decadal Survey Midterm Assessment Committee, 2023-2024
Co-Chair, Program Committee of the GEWEX Open Science Conference, 7-12 July 2024, Sapporo, Japan, with 900 scientific participants and 400 stakeholders.
Guest Editor, invited by PNAS to handle 5 different manuscripts, 2024
Member, NOAA EISWG Committee to prepare the Report on an Observing System Backbone Architecture, 2023
Co-Editor, Special Issue (with ten papers) and a book: 50th Anniversary of the Metaphorical Butterfly Effect since Lorenz (1972): Multistability, Multiscale Predictability, and Sensitivity in Numerical Models, Atmosphere, Vol. 14, 2023, with Bo-Wen Shen and Roger A. Pielke Sr.
Member, Advisory Committee of the DOE Project on Coastal Observations, Mechanisms, and Predictions Across Systems and Scales (COMPASS) - Great Lakes Modeling (GLM), 2022-2023
Co-Chair, Roger A. Pielke Sr. Symposium, during AMS Annual Meeting in Denver CO, 10 January 2023
Member, NOAA Science Advisory Board Environmental Information Services Working Group, 2015-2022
Member, NCAR Earth Observing Laboratory (EOL) External Advisory Committee, 2015-2022
Co-organizer, Pan-GEWEX meeting, 27-30 July 2022, Monterey, CA
Co-chair, GEWEX Global Atmospheric System Study (GASS) Panel, 2017-2021
Co-Chair, Robert E. Dickinson Symposium, AMS Annual Meeting, Boston, MA, January 2020
Chair, NOAA Observing System Simulation Experiment (OSSE) Report, 2018-2019
Co-Chair, AMS Annual Meeting (with 3,800 attendees), January 2019, Phoenix, AZ
Co-Chair, Symposium on the Implications of Water Cycle Science and Technology for Resource Management, AAAS Annual Meeting, 18 February 2018, Austin, TX.
Chair, AMS Researcher Involvement Committee, 2015-2017
Member, National Academies NASA/NOAA/USGS Decadal Survey Panel on Weather and Air Quality: Minutes to Subseasonal, 2016-2017
Chair, NASA Earth Science Community Workshop and White Paper on future directions in the Weather Focus Area, 2014-2015
Co-Chair, NSF/AGS Community Workshop and White Paper on lower-atmosphere observing facilities (LAOF) for climate studies, 2012-2013
Co-Chair, NRC Committee on Urban Meteorology: Forecasting, Monitoring, & Meeting End Users' Needs, 2011-2012
Elected Member, AMS Council (2010-2013) and its Executive Committee (2011-2013)
Member, International CLIVAR Asian-Australian Monsoon Panel, 2009-2012
Editor, Advances in Atmospheric Sciences, 2009-2015
Member, National Academies Board on Atmospheric Sciences and Climate (BASC), 2008-2014
Member, U.S. CLIVAR Process Studies and Model Improvement (PSMI) Panel, 2007-2010
Co-Chair, Scientific Steering Committee, National Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry (LAPC), Chinese Academy of sciences, 2006-2010
Member, AGU Publications Committee, 2002-2006
Member, International Geosphere-Biosphere Program (IGBP) Integrated Land Ecosystem -Atmosphere Processes Study (iLEAPS) development team, 2003-2004
Co-Chair, Symposium on Observing & Understanding Variability of Water in Weather and Climate - cross-cutting symposium during AMS Annual Meeting, Long Beach, Feb. 2003
Chair (2000-2003) and member (1998-2000), AMS Committee on Air-Sea Interaction
Chair, 11th Conference on Air-Sea Interaction, San Diego, 14-18 May 2001
Member, Search Advisory Committee for the UA Senior Vice President for Research and Innovation (appointed by the UA President), 2024
Member, Research Working Group of the UA Suatainability & Climate Action Plan (appointed by SVP-Research), 2023
Member, UA College of Science Dean Search Committee (appointed by Provost), 2019-2021
Member, Criterion 5 Accreditation committee for Higher Learning Commission review (appointed by Provost), 2018-2021
Lead, UA Strategic Plan Sub-Initiative: Predict and plan for future Earth (appointed by UA President), 2018-2020
Member, UA College of Science Transition Committee (appointed by Interim Dean), 2019-2020
Member, Executive Committee of UA TRIF (Water, Environmental, and Energy Solutions) Program (appointed by SVP-Research), 2016-2020
Co-Chair, UA Strategic Planning and Budget Advisory Committee (SPBAC) Committee (appointed by UA President) & Member of the President's Cabinet, 2018-2019
Member, UA Environmental Research Landscape Review (appointed by SVP-Research), 2017-2018
Member, Arizona Leadership Institute Advisory Board (appointed by VP-Human Resources), 2016-2018