Physical processes
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Physical processes. Steve Krueger and Chin-Hoh Moeng Fort Collins, CO July 29-31, 2008. Long-term goal:. Improved SGS physics (all the small scale stuff) in MMF low-level clouds PBL turbulence microphysics radiation. Six presentations (1).

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Physical processes

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Physical processes

Physical processes

Steve Krueger and Chin-Hoh Moeng

Fort Collins, CO

July 29-31, 2008


Long term goal

Long-term goal:

Improved SGS physics

(all the small scale stuff)

in MMF

  • low-level clouds

  • PBL turbulence

  • microphysics

  • radiation


Six presentations 1

Six presentations (1)

1. Robert Pincus: Described his new, less expensive,

radiation algorithm.

2. Andy Heymsfield: Identified specific conditions

for cloud droplet survival and homogeneous

ice nucleation from lots of field data.

3. Anning Cheng: Implemented and tested their

new PBL scheme (IPHOC) in VVM.


Six presentations 2

Six presentations (2)

4. Joao Teixeira: Described the eddy diffusion-mass

flux (EDMF) PBL scheme used in ECMWF.

5. Peter Henderson: Evaluated SAM’s cloud at

the SGP ARM site.

6. Steve Krueger: Evaluated joint PDF representations

of PBL clouds using the giga-LES dataset.


Posters on physical processes

Posters on Physical Processes

1. Bogenschutz: Examined an improved SGS turbulence/cloud scheme (assumed PDF) using giga-LES data.

2. Yamaguchi: Studied cloud-top entrainment instability of marine stratocumulus.

3. Schmitt: Examined low-latitude tropopause cirrus cloud properties.

4. Suzuki: Evaluated warm cloud microphysics processes in CRM using A-Train satellite data.


Action items implementation and testing of new sgs schemes in mmf

Action items: Implementation and testing of new SGS schemes in MMF

1. Implement a new radiation algorithm in SAM. (Pincus)

2. Implement the EDMF scheme in SAM? (Teixeira)

3. Perform more testing of IPHOC in VVM (Cheng)

4. Upgrade/test two-moment cloud scheme in SAM (Morrison)

5. Continue to find/develop improved SGS schemes

(The rest of us…)


Issues

Issues

  • Data support at SDSC (account; format conversion)

  • More people to analyze the 1st giga-LES

  • More computer time for more giga-LES runs: case with stronger PBL interaction; deep convection over land…

  • Giga-LES with different microphysics schemes; how sensitive and what?

  • How to evaluate these idealized cases?


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