The Leadership Team
Phase 3 Executive Committee
Peter M. Caldwell
Principal Investigator; Council Chair
LLNL
Ruby Leung
Chief Scientist
PNNL
Mark Taylor
Chief Computational Scientist
SNL
Renata B. McCoy
Chief Operating Officer/Project Engineer
LLNL
David C. Bader
Ex Officio Executive Committee Member
Former PI
LLNL
Phase 3 Funcional Organization
Phase 3 Leadership Team
Executive Committee
- Project PI: Peter Caldwell caldwell19@llnl.gov
- Project Engineer: Renata McCoy mccoy20@llnl.gov
- Chief Scientist: Ruby Leung Leung@pnnl.gov
- Chief Computational Scientist: Mark Taylor mataylo@sandia.gov
- Former Project PI: Dave Bader bader2@llnl.gov
Phase 3 Groups
- Coupled Model Group
- Lead: Chris Golaz golaz1@llnl.gov
- Deputy: Wuyin Lin WLin@bnl.gov
- Deputy: Xue Zheng zheng7@llnl.gov (since 03/2025)
- Water Cycle Changes and Impacts Group
- Lead: Bryce Harrop bryce.harrop@pnnl.gov
- Deputy: Claudia Tebaldi claudia.tebaldi@pnnl.gov
- Human-Earth System Feedbacks Group
- Lead: Ben Bond-Lamberty BondLamberty@pnnl.gov
- Deputy: Jennifer Holm jaholm@lbl.gov
- Deputy: Nicole Jeffery njeffery@lanl.gov
- Deputy: Qing Zhu qzhu@lbl.gov
- Deputy: Kate Calvin katherine.calvin@pnnl.gov
- Polar Dynamics Group
- Lead: Andrew Roberts afroberts@lanl.gov (since 3/2025, former Deputy)
- Deputy: Stephen Price SPrice@lanl.gov (since 3/2025, former Group Lead)
- Deputy: Darin Comeau dcomeau@lanl.gov (since 10/25)
- Infrastructure Group
- Lead: Rob Jacob jacob@mcs.anl.gov
- Deputy: Chengzhu Zhang zhang40@llnl.gov
- Former Deputy: Sarat Sreepathi sarat@ornl.gov
- Atmosphere Group (combined former Atmosphere and EAMxx Groups)
- Lead: Chris Terai terai1@llnl.gov (since 3/25)
- Deputy: Susannah Burrows Susannah.Burrows@pnnl.gov
- Deputy: Aaron Donahue donahue5@llnl.gov (since 3/25)
- Deputy: Hailong Wang Hailong.Wang@pnnl.gov
- Former Lead: Peter Caldwell caldwell19@llnl.gov. (stepped down 03/25 to take PI role)
- Omega Group
- Lead: Luke van Roekel lvanroekel@lanl.gov
- Deputy: Steven Brus sbrus@anl.gov
- Deputy: Mark Petersen mpetersen@lanl.gov
- Land Group
- Lead: Peter Thornton thorntonpe@ornl.gov
- Deputy: Gautam Bisht gautam.bisht@pnnl.gov
- S2D (Subseasonal to Decadal) Prediction Group
- Lead: Shaocheng Xie xie2@llnl.gov (since 10/25)
- Artificial Intelligence Group
- Lead: Naser Mahfouz naser.mahfouz@pnnl.gov (since 10/25)
Cross-Cutting Coordinators
- Performance Coordinator
- Lead: Andy Salinger agsalin@sandia.gov
- Former Lead: Sarat Sreepathi sarat@ornl.gov
- Lead: Andy Salinger agsalin@sandia.gov
Former Leadership
- Ice Group
- Lead: Darin Comeau dcomeau@lanl.gov (since 3/25, former Deputy)
- Deputy: Stephen Price SPrice@lanl.gov (since 3/2025)
- Former Lead: Elizabeth Hunke eclare@lanl.gov. (stepped down 3/25)
- Atmosphere Group
- Lead: Shaocheng Xie xie2@llnl.gov
- Deputy: Hailong Wang Hailong.Wang@pnnl.gov
- Former Deputy: Susannah Burrows Susannah.Burrows@pnnl.gov (stepped down 12/24)
Cross-Cutting Coordinators
- Machine Learning/Artificial Intelligence Coordinator
- Lead: Andy Salinger agsalin@sandia.gov
- Performance Coordinator
- Former Lead: Sarat Sreepathi sarat@ornl.gov
