GMICore Modeling Activities Status Report

November 5, 2003

Managers, Susan Strahan and Tom Clune

I. Personnel

II. Status of Aerosol, Tropospheric, & Stratospheric Models

III. GMI Web page

IV. What we need from YOU

I. Personnel – Science Evaluation (Code 916) and Computational Services (Code 931) at GSFC

• Science Computing Branch (Tom Clune)– Jae-Hoon Kim and Bigyani Das prepare inputs and

run the models. – Additional computational support personnel, such as

software engineers and web site designers, are available as needed.  

• Science Evaluation (Susan Strahan)– Over the summer, Steve Steenrod joined the team.

He has extensive experience with the Goddard CTM.– Chris Readinger joined the team 3 weeks ago. He will

be writing IDL codes for reading, post-processing, and diagnostic evaluation of model output.

II. Tropospheric Model: Status and Simulations

• Radionuclides (222Rn, 210Pb, 7Be, and 10Be)– The wet deposition scheme blues– Coding error corrected (in rainout), new radionuclide results

differ from previous (Nov 2001) results.– Cloud liquid water (LWC) value: Harvard vs. Michigan? Choice

affects surface Pb in northern high latitudes– Latest simulation (3 met fields) with Michigan LWC available

• Full Chemistry– Latest simulations: 3 met fields, all diagnostics on, and

Michigan LWC – some output problems! Will rerun….– Output files for 175 stations

• Synthetic Tracers (Bio Burning CO, Transcom CO2, and CH3I)

– Simulations just completed– These runs provide diagnostic help for interpretation of full

chemistry runs.

II. Aerosol Model: Status & Simulations

• To Date– aerosol model and Michigan inputs were delivered in

summer– model is coded to run only 1 month at a time, some

recoding is necessary to run 1 year at a time– 1 year simulation with DAO winds and Michigan inputs

(and Michigan LWC) now being evaluated by Michigan

• Coming up next…– Simulations with GISS and CCM3 winds are ready to roll

once DAO results are ‘validated’ against Michigan results– Next simulations will use GMI model results (e.g. HO2 &

O3) as inputs, instead of Michigan chemical input.

II. Stratospheric Model: Status & Simulations

• To Date– Model delivered in July and tested last month– We reproduced results identical to Peter

Connell’s test run with the same version of the code

– Slightly different results are obtained with 32 vs. 44 processors. Differences are scientifically insignificant.

• Coming up next… – Test of sensitivity to horizontal resolution. We’ll

use same FVGCM winds but at 2x2.5 resolution. Very relevant to the isolation of Antarctic vortex.

– Updating reaction rates to JPL2002.

III. GMI Web Site: http://gmi.gsfc.nasa.gov

• Currently working on ‘Science Highlights’ Section– Need tropospheric model text– Need aerosol model text– Submitted manuscripts can be downloaded here

• Currently working on ‘Calendar and Notes’– we will keep this current so you can review agenda

and presentations from recent meetings– Site for downloading future meeting info, timelines

• My goal: to fill out the site by next meeting, including an information page for prospective GMI members on our research needs/priorities

IV. What we need from you….

• Copy of your presentation (*.ppt or *.doc). Email to strahan@code916.gsfc.nasa.gov

• A prioritized list of your GMI computing needs. For example, – IDL readers for a particular model output– clearly defined new diagnostics– IDL post-processing routines– a list ‘standard’ diagnostic plots to be made (by us)

for any new simulation…

• Text and manuscripts for the GMI web site