Atmosphere Group Meeting Agenda, Nov 2016

Wednesday Nov 9 1:10-3:10, Plenary Room

Time	Speaker/Moderator	Topic
1:10-1:40	Phil and Shaocheng	Organizational Issues Go to Organization
1:40-2:10	Phil	Discussion about new capabilities for V3 Goto V3 Discussion
2:10-2:40	Shaocheng	Understanding the ACME model: Goto Understanding V1
2:40-3:10	Kate Evans (Unlicensed) & Peter Caldwell	Diagnostics Discussion

Organizational Issues

name for the model?
code review process, see Code Review Process Implementation
what tasks are done and should be ramped down and closed as publications are completed?
- Ozone Hole (A1)
- CLUBB/UNICON (A2)
- Polar Mods (A5)
- Vertical resolution (R1 VR)
what tasks should be finished
- first fully functional version of tier1b diagnostics needs to be completed
what tasks are active and need to continue?
- small team deputized to suggest a re-organization?
- regionally refined model
- clouds/aerosols
- interactions with surface models (more broadly than before, SMB, fluxes, etc)
- assessment/testing/tuning (should be partitioned with specific leads)
  - short simulation strategies
  - tuning
  - UQ
  - scorecards
  - COSP/Simulators
what should we be doing that we are not doing?
- Convection (replacement for ZM)
  - requirements document
  - my (PJR) inclination is to continue to consider alternatives to CLUBB
- Non-hydrostatic dycore?
- different vertical coordinate?
- SCAM?
are we missing partnering with particular research groups or scientists?

Discussion about new capabilities for V3

See /wiki/spaces/ATM/pages/36865199

Note the brainstorming breakout that does not involve Atm Leads (7-8PM wednesday, Breakout #5, see Brainstorming on next generation Atm Model)
What model features need to be fixed?
- pressure gradient term
- sub-column treatment for radiation
  (convective/stratiform partitioning)
- ?
What physics is missing/deficient? (Ideas relevant to ACME science, but not vetted/definitive)
- elevation classes
  - deep dive for v2 data structures and will intersect w the CMDV software project (Ghan, Goldhaber, Salinger, Taylor, Atm GLs)
  - Intersection with parallel/sequential splitting of physics processes?
- cloud overlap (correlation length scales)
- See Talking points on Radiative Transfer
- consistent treatment of cloud precipitation and aerosol scavenging
- Improvements to aerosols
  - Prognostic aerosol surface area
  - Stratospheric aerosol treatments
  - Modify MAM aerosols to allow stratospheric aerosols
  - Gas/Particle partitioning (MOSAIC)
  - SOA
  - Brown Carbon
  - Nitrate
- What software capabilities are missing?
  - in-situ diagnostics (diurnal cycles, PDFs, etc, c.f. Katherine Calvin (Unlicensed), Po-Lun Ma, Steven Goldhaber (Unlicensed) conversations)
  - easy to create and use data models
  - ?
- More Atm Chemistry? (from conversation with Ruby Leung)
  - For biogeochemistry, the v2/v3 focus is on the impacts of different carbon reduction pathways (e.g., high fossil fuel vs. high renewable energy penetration) on the carbon sink and associated impacts on water availability. We’ve identified a particular need for improving modeling of the nitrogen cycle as relate to the terrestrial C-N cycle, land use (e.g., land management/fertilizers), and related atmospheric chemistry. This topic fits in well with the biogeochemistry question for v2/v3 and we also recognized the opportunities to collaborate with university teams on topic.
  - We will continue this discussion and include others to further define key atmospheric chemistry modeling needs that are consistent with the v2/v3 science drivers. For example, one topic that still needs to be explored is the methane cycle.

Understanding the ACME model:

Tier 1b diagnostics (
Using the ACME model to further ACME science that does not involve the coupled simulations
Where would Atm Team like to take a lead in investigating coupled features?
- ENSO?
- Surface Mass Balance over Ice Sheets?
Publications

Notes:

Organization:

xxx

Plans for V3:

xxx

Understanding The ACME model:

xxx