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