NGGPS Atmospheric Physics Workshop


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NGGPS Atmospheric Physics Workshop

November 8-9, 2016 | NOAA Center for Weather and Climate Prediction Building 5830 University Research Ct, College Park, MD 20740

The overarching objective for the National Oceanic and Atmospheric Administration (NOAA) Research to Operations (R2O) Initiative is the design, development, and implementation of the Next-Generation Global Prediction System (NGGPS), with a goal to provide enhanced forecasting capability from a few hours to 30 days. One of the major work areas for NGGPS is improving model physics packages to better describe weather phenomenon at global to regional scales. NGGPS’s strategy for addressing the need to develop a next generation atmospheric physics suite includes community involvement, Scientifically-based Working Groups (SWGs), a development strategy that includes both a focus on single process upgrades and combinations of closely allied processes, enhanced diagnostics and testing and evaluation. The goals of this workshop are:

  • Provide a forum for discussing current atmospheric physics development directed at addressing the NGGPS Physics Team Plan and identify missing pieces in this plan.
  • Discuss the framework for distributed atmospheric physics development and protocols/procedures for working within this framework.

NGGPS Atmospheric Physics Workshop Agenda

updated 11/7

NGGPS Atmospheric Physics Workshop Agenda


Tuesday, November 8, 2016


8:30 am Workshop Welcome (Fred Toepfer, Bill Lapenta, Vijay Tallapragada) - Workshop goals and priorities of physics team plan


Scientifically-based Working Group Session (Chairs: Shrinivas Moorthi/Jim Doyle)

(50 min per SWG - 20 min presentation + 30 min discussion)

Presentations should provide an overview of NGGPS priorities for each SWG and planned physics testing, aligned activities/timelines/deliverables (both funded and/or unfunded/proposed as applicable), and identify any major gaps and opportunities.


8:45 am Convection and Boundary Layer (Jongil Han, Chris Bretherton)


9:35 am Cloud Microphysics (Ruiyu Sun, Jian-Wen Bao)


10:25 am Coffee Break


10:45 am Radiation (Yu-Tai Hou, Robert Pincus)


11:35 am Gravity Wave and Large-Scale Orographic (and non-Orographic) Drag (Jordan Alpert, Steve Eckermann)


12:25 pm Lunch


1:25 pm Earth System Surface Fluxes (EMC: Mike Ek, Fei Chen)


Related Topics Session (Chair: Jimy Dudhia)

Presentations should provide an overview of the subject with an emphasis on the SWG interest areas, and identify relevant gaps and opportunities for testing and development, particularly for the NGGPS project.


2:15 pm Stochastic Physics (Phil Pegion, Yuejian Zhu)


2:45 pm Aerosol interactions w/ physics (Georg Grell, Paul Ginoux)


3:15 pm Coffee Break


3:45 pm Wrap-up session (Lead: Jim Doyle) - Recap of earlier discussions, identify key gaps in the physics team plan and any new development underway within the broader community that might address these gaps.


Wrap up by 5:00 pm


Optional group dinner



Wednesday, November 9, 2016


NGGPS Physics Development Session (Chair: Bill Kuo)


8:30 am Governance and Streamlining NGGPS Physics Development (Hendrik Tolman)


9:00 am Longer term strategy for NGGPS Physics Management (Vijay Tallapragada and Ligia Bernardet)


9:30 am Discussion


10:30 am Coffee Break


Collaborative Framework Session (Chair: Louisa Nance)

(15 min presentation w/ 15 min for questions/discussion)


10:45 am Interoperable Physics Driver (IPD) and Common Community Physics Package (CCPP) (Jimy Dudhia)


11:15 am Hierarchical Testing and GMTB Physics Testbed (Grant Firl)


11:45 pm Physics suites, testing and diagnostic tools for assessing interactions (Mike Ek)


12:30 pm Instructions for break-out groups and grab lunches


12:45 pm Break-out groups by SWG - Defining priorities for advancing competing physics schemes

Topics to discuss:

  1. How do we determine the most promising parameterization scheme(s) that can be delivered by 2019 for potential implementation into operations?  What are the next steps and priorities?
  2. How do we ensure the advanced physics options support NWS's unified modeling goals for all applications (global weather, ensemble, seasonal climate, convective scale, hurricanes, etc.).
  3. What set of metrics should be used to evaluate physics packages?
  4. What procedure(s) should be used for identifying advantages of different approaches?
  5. What tests/diagnostics are needed for physics evaluations and to evaluate the fidelity of the interactions between schemes?
  6. What tools and data sets do developers need for their development and testing?

Focus areas and leads:

  • Convection and Boundary Layer (Shrinivas Moorthi, Chris Bretherton) - report 
  • Gravity Wave Drag (Valery Yudin and Jordan Alpert) - report
  • Clouds and Radiation (Brad Ferrier and Sarah Lu) - report
  • Earth System Surface Fluxes (Helin Wei) - report



2:45 pm Coffee Break


3:00 pm Break-out group reporting (Chair: Jimy Dudhia) 10-min summaries from each break-out group followed by discussion


4:00 pm Wrap-up - next steps, action items (Jim Doyle) - finish by 5:00 pm

Adimi, Farida NGGPS Program Office & EMC
Aligo, Eric EMC
Archambault, Heather Climate Program Office
Bao, Jianwen NOAA/ESRL/PSD
Barahona, Donifan NASA GMAO
Belochitski, Alex NOAA EMC
Benson, Rusty NOAA-GFDL
Bernardet, Ligia NOAA ESRL
Bhattacharjee, Partha NOAA/NCEP/EMC
Bretherton, Chris University of Washington
Brown, Tim NOAA/GSD
Cai, Ming Florida State University
Carson, Laurie DTC
Chen, Fei NCAR
Chen, ShengPo SUNY
Cheng, Anning EMC NCEP NOAA
Colle, Brian Stony Brook University
Davidson, Paula NOAA/NWS
Dazlich, Donald Colorado State University
Deng, Yi Georgia Institute of Technology
Doyle, James NRL
Dudhia, Jimy NCAR/MMM
Eckermann, Steve U.S. Naval Research Laboratory
Eleuterio, Daniel Navy
Ferrier, Brad NOAA/NWS/NCEP/EMC and IMSG
Firl, Grant NCAR
Ginoux, Paul NOAA GFDL
Grell, Georg NOAA/ESRL/GSD
Han, Jongil SRG at NCEP/EMC
Harrold, Michelle NCAR
Hoswell, Liz NCAR
Iredell, Mark EMC
Johnson, Ben NOAA/JCSDA
Kalnay, Eugenia Univ of Maryland
Kolczynski, Walter NOAA/NWS/EMC via IMSG
Krueger, Steve University of Utah
Kuo, Bill DTC
Lapenta, Bill NCEP/EMC
Larson, Vincent University of Wisconsin --- Milwaukee
lastname, firstname affiliation
Lee, Seoung University of Maryland College Park
Lei, Hang EMC
Li, Zhanqing University of Maryland
Lin, Shianjiann GFDL
Lord, Stephen Univ. of Maryland, ESSIC
Lu, Sarah SUNY Albany
Mehra, Avichal NWS/NCEP/EMC
Molod, Andrea NASA GMAO
Nance, Louisa NCAR
Olson, Joseph NOAA-ESRL/GSD
Pincus, Robert University of Colorado
Putman, William NASA GMAO
saha, suru EMC/NCEP
Sandgath, Scott University of Washington
Schneider, Tim NWS
Stajner, Ivanka NOAA/NWS
Stark, Donald DTC/RAL/NCAR
Tallapragada, Vijay NOAA/NWS/NCEP/EMC
Thompson, Greg NCAR-RAL
Toepfer, Fred NOAA/NWS/OSTI
Tolman, Hendrik NOAA / NWS / OSTI
Wang, Zhuo University of Illinois at Urbana-Champaign
Warren, Steve NOAA/NWS/NGGPS
Wei, Helin EMC
Wolff, Jamie NCAR/RAL and DTC
Yang, Fanglin NCEP/EMC
Yudin, Valery CU-CiRES/SWPC
ZHANG, LEI University of Maryland
Zhao, Ming GFDL
Zhou, Linjiong NOAA/GFDL

Select directories below to view and download documents from the 7th NCEP Ensemble Users Workshop.

Workshop information:

For more information, please contact Louisa Nance (  The organizing committee is comprised of Jim Doyle (NRL), Jimy Dudhia (NCAR), Louisa Nance (NCAR) and Vijay Tallapragada (NOAA/NWS/NCEP/EMC).