Skip to main content
US Flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Home » Staff Profiles

GSL Staff Profiles

Ravan Ahmadov

Education • Ph.D., Atmospheric Physics Department, Moscow State University, 2004 Research Interests • Air quality and tracer transport modeling • Atmospheric aerosols • ...

Learn More
Curtis Alexander

Dr. Curtis Alexander (NOAA/OAR/GSL) received his undergraduate and graduate degrees from The Pennsylvania State University (1999) and the University of Oklahoma (2002, 20...

Learn More
Hannah Barnes

Fundamentally, my research focuses on improving our understanding on convection and improving our ability to represent convection in numerical weather models. I am current...

Learn More
Randy Barnett

Randy Barnett IT Operations Manager   Education B.S. Computer Information Systems - Regis University (1994) M.S. Computer Information Systems - Regis University (2000)   Ex...

Learn More
Leon Benjamin

Specializing in observational weather data processing for instruments from the ground up including meteorological and hydrological surface, aircraft, profiler, and other o...

Learn More
Stan Benjamin

Stan is the senior scientist/advisor for advanced modeling systems, NOAA Global Systems Lab. Stan grew up in the DC area but also lived in Canada for 2 years during eleme...

Learn More
Ligia Bernardet

My work straddles the interface between research and operations in numerical weather prediction. As the deputy chief of the GSL Earth Prediction Advancement Division, I co...

Learn More
Rainer Bleck

After writing a (borderline mediocre) Ph.D. thesis on the use of isentropic trajectories to diagnose vertical motion in the extratropical atmosphere, Rainer’s career starte...

Learn More
DaNa Carlis

DaNa L. Carlis, Ph.D. is a meteorologist and serves as the Deputy Director at GSL since September 2020. He comes to GSL from the Weather Program Office (WPO) where he est...

Learn More
Susan Cobb

I lead communications for the NOAA Global Systems Laboratory. Research Interests • Science communications • Aviation weather forecasting • Severe weather forecasting • So...

Learn More
Jeffrey Duda

I grew up in Iowa and developed a penchant for weather at a young age watching severe weather roll through during the spring and summer (TWC was one of my most-watched ch...

Learn More
Jason English

I started working in GSL in 2015, where I conducted Observing System Simulation Experiments (OSSEs) to evaluate the impacts of targeted dropsondes on winter storm forecasts...

Learn More
Ken Fenton

Ken Fenton, Physical Scientist, FAA Program Manager Ken Fenton is a Physical Scientist at NOAA’s Global Systems Laboratory (GSL) and works in the Forecast Impact and Quali...

Learn More
Jenny Fox

Bio I am from Boulder, CO and am living in the same house that I grew up in.  I have always loved to travel, and after working as IT support at the Aeronomy Laboratory (the...

Learn More
Guoqing Ge

Dr. Guoqing Ge’s work focuses on developing and testing modifications in data assimilation for numerical models. He maintained the community version and provided community ...

Learn More
Penny L Granville

Penny Granville has been GSL’s Administrative Officer since 2005. She manages the administrative staff working on Facility Access, Deemed Exports, and Property accountabil...

Learn More
Ben Green

Born and raised in Silver Spring, Maryland, I became interested in meteorology at a very young age. I pursued this interest after high school, obtaining three degrees (B.S....

Learn More
Georg A Grell

Bio Dr. Georg Grell is the chief of the Earth Prediction Advancement Division (EPAD) at NOAA/ESRL/GSL. Georg received his Ph.D. as a collaborative dissertation (NCAR and ...

Learn More
Shilpi Gupta

Education • M.S. Computer Science, University of Kentucky, 2006 • B.S. Computer Science, University of Kentucky, 2003 • B.S. Art Studio, University of Kentucky, 2003 • Mi...

Learn More
Venita Hagerty

Venita is a Software Engineer in the AVID Verification group. She grew up in Southern California, tried out the DC area for a few years, and then moved back West. She has...

Learn More
Jeff Hamilton

Jeff Hamilton Jeff developed a love for meteorology at an early age and was fortunate enough to live in different areas of the country with extreme weather growing up. Se...

Learn More
Nathan Hardin

Nate is a Research Physical Scientist specializing in helping National Weather Service National Centers and International partners develop and implement new operational t...

Learn More
Edward Hartnett

I am the author of NetCDF-4, a freely available software library for scientific data, used by NASA, NOAA, the ESA, and climate and meteorology scientists around the world. ...

Learn More
Siwei He

Name Siwei He Research Scientist I at CIRES Bio  My research mainly focuses on the land surface modeling, especially on the subgrid processes and snow processes. I have...

Learn More
Craig Hoffman

Craig is currently GSL's webmaster. He has worked as an IT Director, senior software engineer, full-stack developer, a mountaineering guide, a professional photographer, an...

Learn More
Christina Holt

Bio Christina has spent her career developing and supporting the development of a variety of numerical weather prediction systems. In graduate school, she focused on applyi...

Learn More
Kirk L Holub

Kirk Holub IT Specialist I am an aerospace engineer and computer scientist who served for 11 years as a civilian research scientist supporting multiple national defense pr...

Learn More
Ming Hu

Ming is a Research Physical Scientist who played a key role in development and implementation of the NOAA operational Rapid Refresh (RAP) and High Resolution Rapid Refresh...

Learn More
Eric James

I joined GSL (then GSD) within the Assimilation and Verification Innovation Division (AVID; formerly the Assimilation and Modeling Branch AMB) in 2010.  Since that time, ...

Learn More
Isidora Jankov

My research is mainly focused on ensemble-based data assimilation, the design of ensemble forecasting systems, and ensemble statistical post-processing. As a part of resea...

Learn More
Shannon M Johnston

Bio I am a fan of hockey, outdoors, and everything IT Security! I cut my teeth in the financial industry for 10 years before coming to NOAA. I have extensive experience in...

Learn More
Darrel Kingfield

Darrel Kingfield, Ph.D. has been with NOAA since 2007 where he has worked at the  intersection of National Weather Service (NWS) watch/warning evolution, hazardous weathe...

Learn More
Terra Ladwig

Terra is a Research Physical Scientist focused on data assimilation to improve convective allowing weather prediction for high impact weather events.  In particular, she ...

Learn More
Ruifang Li

I work in AVID mainly on data assimilation, I am involved in transferring HRRRv4/RAPv5 into FV3. We install capabilities required for DA in FV3 including latent heat forc...

Learn More
Tony Liao

Tony Liao, Ph.D., is a senior research associate of ATD (Advanced Technologies Division). He is also a senior member of IEEE (Institute of Electrical and Electronics Engine...

Learn More
Sung-Chu Liao

3D Visualization & Software Developer Sung Chu Liao (Sam Liao) is a 3D Visualization & Software Developer with experience in System programming and Game development...

Learn More
Liaofan Lin

Liaofan joined NOAA/OAR/Global Systems Laboratory as an affiliate of the Cooperative Institute for Research in the Atmosphere (CIRA) in 2019.  He is a member of the NOAA ...

Learn More
Robert C Lipschutz

Bio Bob Lipschutz received his BS (1974) and MS (1980) in Meteorology from Penn State University. He was a Scientific Assistant in the Atmospheric Physics Section at Argonn...

Learn More
Jennifer Mahoney

Jennifer Mahoney is the Director of the NOAA’s Global Research Laboratory (GSL). She leads a staff of nearly 200 meteorologists, software engineers, and support staff dedi...

Learn More
Kevin Manross

Kevin grew up in NW PA where he experienced the 31 May 1985 tornado outbreak that affected eastern Ohio and Western Pennsylvania and that piqued his interest in severe we...

Learn More
Ian Mcginnis

Ian develops software for NOAA's Science on a Sphere project and for GSL/AVID’s verification team. He uses C++, Python, OpenCV, Flask, and other technologies to implement f...

Learn More
William R Moninger

Bill is a semi-retired physicist who works on evaluating the skill of weather prediction models. He is also an expert in automated weather observations by commercial aircra...

Learn More
Raffaele Montuoro

Raffaele has been leading design and software development efforts aimed at building NOAA’s next-generation operational forecasting systems for atmospheric chemistry, air qu...

Learn More
Sylvia Murphy

Titles:  • GSL CIRES lead • FACETs Program Manager • WISE Project Manager, Budget Analyst, CIRES supervisor Sylvia began her career as a Surface Warfare Officer and Ocean...

Learn More
Scott Nahman

Scott Nahman graduated from the University of Colorado Naval ROTC program and served aboard the USS Germantown as the Electronics Material Officer and Electronic Warfare O...

Learn More
Daniel Nietfeld

Profile Daniel is the Chief of the Evaluation and Decision Support (EDS) Division at GSL. His background is rooted in integrating science (physical science and social scien...

Learn More
Joseph B Olson

Joe is the primary developer of the boundary layer and surface layer schemes used in the operational Rapid Refresh (RAP) and High-Resolution Rapid Refresh (HRRR) forecast...

Learn More
Linlin Pan

My work is mainly focused on numerical weather model development, verification and support. I participate in enhancing transition of innovations in Numerical Weather Predi...

Learn More
Hilary Peddicord

Hilary came to CU Boulder to study secondary science education after receiving a BS in Zoology and Dance at the University of Wyoming, taking 8 years to travel, ski bum in ...

Learn More
Missy Petty

Missy Petty serves as the Associate Director for Administration in the Global Systems Laboratory (GSL). In this role, she oversees the administrative and financial function...

Learn More
Randy Pierce

Randy is a professional software engineer. After graduating with degrees in Physics and engineering he worked for ten years developing advanced hardware and software used...

Learn More
Stephen Pon

Stephen Pon is a Research Assistant of the Advanced Technologies Division (ATD),who has been served as a project manager for the task #4 of NOAA-Taiwan CWB (Central Weathe...

Learn More
Greg Pratt

Greg Pratt Deputy Advanced Technologies Division, Chief Innovative Weather Delivery Systems Branch. Bio Design and develop prototype weather information delivery systems ...

Learn More
Jennifer Raab

CIRA-Boulder Project Specialist

Learn More
Michael Rabellino

Role Software Engineering and Web Application Development (CIRES) Research Interests • Research and development aimed at improving the weather information provided to ai...

Learn More
Duane Rosenberg

Research Interests:  • Fluid turbulence • Geophysical fluid dynamics • Phenomenology • CFD • Algorithm development • HPC Education • Ph.D., Physics, University of North ...

Learn More
Jordan Schnell

Jordan Schnell - Research Associate Research Interests • Chemical transport modeling and air quality forecasting • Weather-chemistry interactions and feedbacks • High-re...

Learn More
Keith Searight

Keith is the technical lead for NOAA Science On a Sphere® (SOS) and project manager with the Developmental Testbed Center (DTC).  For SOS, he leads the development team a...

Learn More
Evan Sheehan

I am the web developer for Science On a Sphere. I've been doing web development professionally since 2006, with a couple of breaks for grad school and a few stints as a us...

Learn More
Tanya Smirnova

I am a senior scientist in Cooperative Institute for Research in Environmental Sciences (CIRES) working for Earth Prediction Advancement Division (EPAD) in Global Systems...

Learn More
Molly B Smith

Molly grew up in a desert part of California, and became interested in weather after the 1997-1998 El Niño turned her normally dry hometown into a lake. When it was time f...

Learn More
Jebb Stewart

Jebb Q. Stewart is the lead of the Informatics and Visualization Branch with the NOAA Global System Laboratory in Boulder Colorado.  With a unique background in both Mete...

Learn More
Bonny Strong

I progressed from software engineering into Project and Program Management as I began to see how I could be more effective to ensure the success of software projects in t...

Learn More
Shan Sun

Shan Sun is a meteorologist at GSL. She came to GSL more than 10 years ago from NASA’s Goddard Institute for Space Studies in New York City, where she had worked for 12 ye...

Learn More
Xia Sun

Xia Sun works on the Unified Forecast System (UFS) Weather Models and the Common Community Physics Package (CCPP). Xia is interested in topics aiming at improving the for...

Learn More
Ed Szoke

I was born in the mid 1950s in Worcester, Massachusetts, an interesting area for a variety of weather, and I knew at a young age that I wanted to become a meteorologist.  A...

Learn More
Zoltan Toth

Dr. Zoltan Toth is a Senior Scientist at the Global Systems Laboratory (GSL) with NOAA Research. His research has covered topics in atmospheric and related dynamical syst...

Learn More
Michael Toy

Michael Toy is a Research Scientist with the Cooperative Institute for Research in Environmental Sciences (CIRES) at the University of Colorado, Boulder.  Dr. Toy began his...

Learn More
Dave Turner

The focus of my research is to better understand various processes that act upon and within the boundary layer (e.g., convective initiation, turbulent redistribution of ...

Learn More
Dana Uden

I started out in renewable energy, specifically solar energy resource modeling for a large clean  energy developer. I transitioned to verification of meteorological product...

Learn More
Jeff Vanbuskirk

Jeff VanBuskirk joined the U.S. Army after graduating high school in 1973 and served as an infantry mortar crewman towards the end of the Vietnam War.  After several years ...

Learn More
Matt Wandishin

Matthew Wandishin leads the Forecast Impact and Quality Assessment Services (FIQAS) Branch, which evaluates aviation weather forecast products for the Federal Aviation Ad...

Learn More
Hongli Wang

My current work focuses on improving skills of weather and air quality prediction through data assimilation and information blending for FV3 and Community Multi-scale Air...

Learn More
Stephen Weygandt

Stephen S. Weygandt, Ph.D., is a supervisory meteorologist, who has helped to direct the development of data assimilation systems that provide initial conditions for the ...

Learn More
Wei Yu

I am currently working as user support for RDHPCS. I have experience in both software development and scientific research, familiar with numerical models and parallel compu...

Learn More
Man Zhang

I joined NOAA/GSL, affiliating with CIRES in 2013. Before this appointment, I was a research scientist in ensemble data assimilation group at CSU/CIRA. My research was to a...

Learn More
Li (Kate) Zhang

My work focuses on the development of complex coupled modeling systems to simulate atmospheric composition, air quality, weather and their interactions. I am one of the p...

Learn More
Suneng Zhuo

Bio Technical leader for Hazard Services for WFOs project. Research Interests Python, cloud, docker, Education • M.S  in Computer Science - University of Wyoming, Lar...

Learn More