Director's Office

The CISL Director's Office works to ensure that scientists have the resources and services they need to pursue research into the complex processes that make up the Earth system, from the ocean floor and atmosphere to the Sun's core.

The Director's Office also encourages and supports CISL's ongoing and important work as a member of the local, regional, and national cyberinfrastructure community as well as the community at large.


Dr. Thomas Hauser

CISL Director

303-497-1837 or

Thomas Hauser was named CISL Director in October 2023, having served as Interim Director starting in November 2022 and as director of the Technology Development Division in March 2021. Before joining CISL, Thomas was the director of Research Computing at the University of Colorado Boulder and is also one of the two founding executive directors of the Center for Research Data and Digital Scholarship and a faculty member in the libraries. Thomas has chaired the Rocky Mountain Advanced Computing Consortium (RMACC), through which about 30 academic and research institutions promote access to high-performance computing. He also has a deep interest in diversity, inclusion, and workforce issues, such as encouraging the formation of the RMACC chapter of Women in HPC. Thomas earned his Ph.D. in mechanical engineering, specializing in computational fluid dynamics, from the University of Technology in Munich, Germany.

John Clyne, Acting Director

Technology Development Division

303-497-1236 or

John Clyne is the acting director of CISL’s Technology Development Division (TDD) and manager of the TDD Visualization and Analysis Systems Technologies section. TDD research and development activities in support of the NCAR mission include development of open-source community tools; optimization and modernization of numerical models; investigation of emerging technologies; and applied research in support of computational science. John began his career at NCAR in 1987 while completing his M.S. in computer science at the University of Colorado, Boulder. John’s long career at NCAR is driven by his passion for applying his broad technical expertise to the betterment of life on earth.

Irfan Elahi, Director

High-Performance Computing Division

303-497-1831 or

Irfan Elahi oversees the High-Performance Computing Division (HPCD), which is responsible for systems engineering, administration, management, and advanced user support for the computational and storage resources and services CISL provides to NCAR and UCAR member institutions. HPCD provides resources and services for computation, data analysis, data post-processing, visualization, and large-scale data sharing. Irfan has a B.S. in Mechanical Engineering from the University of Engineering and Technology, Taxila, and more than 30 years’ experience in architecting, deploying, and managing high-performance computing and storage resources.

Dave Hart, Director

Research Support Division

303-497-1234 or

Dave Hart oversees the Research Support Division, which provides a range of IT infrastructure and support services for CISL’s HPC and data service environments. Dave manages the allocations processes for CISL's HPC resources and also has responsibility for and coordinates a range of other cross-divisional activities within CISL, including reporting and communications. He is also the co-PI and NCAR site lead for the ACCESS Allocations Service, previously having served six years as the allocations director for the XSEDE program. Before joining CISL in 2010, Dave worked for 15 years at the San Diego Supercomputer Center in a variety of leadership positions. He has an M.S. in Computer Science from Carnegie Mellon University and a Masters of Mass Communication from the University of Georgia.

Doug Schuster, Acting Director

Information Systems Division

303-497-1216 or

Doug Schuster is the acting director of CISL’s Information Systems Division (ISD) and manager of ISD’s Data Engineering and Curation Section. ISD develops and maintains services that enable search and discovery of NCAR’s data assets, support data-proximate computational research, and provide long-term preservation and access to the rich variety of observational data sets and model outputs produced and hosted at NCAR. Additionally, ISD offers consulting services to its data services users and assists NCAR researchers in developing data management plans that meet community open science expectations. Doug earned his bachelor’s degree in civil engineering at the University of Minnesota, Twins Cities, and an M.S. in atmospheric science at Colorado State University in Fort Collins. 

Amy Moore, Assistant Director of Administration, Lead Lab Administrator

303-497-1258 or

Amy Moore leads the administrative staff and processes for CISL, including oversight of the NCAR-Wyoming Supercomputer Center and UCAR Communications Pool budget function, and provides strategic planning, budget and human resources leadership for the lab. She joined UCAR Finance in 1995, was a member of the NCAR High Altitude Observatory administrative team from 1997 to 2002, and has been with CISL since 2003. Amy has a B.S. in Finance from Regis University.

Elizabeth Chapin, Lab Administrator, Senior Business Analyst

303-497-1228 or

Elizabeth Chapin oversees the CISL administration team in partnership with Amy Moore and executive leadership, including budget, human resources support, proposal, award and strategic planning. She joined NCAR in 2003, worked in the High Altitude Observatory and NCAR Director's Office, and has been with CISL since 2011. Elizabeth has a B.A. in Economics from Colorado State University.