1. Control Run Precipitation Comparison John D. McMillen

2. 27 Oct 2010 GSLE Case TERRA ~1030L

3. Trevor’s Total Accum. Precip.

4. My Total Accum. Precip. WRF 3.4 Includes updates to Thompson

5. Trevor’s GSLE Total Accum. Precip. 0230-1700 UTC

6. My GSLE Total Accum. Precip. 0230-1700 UTC

7. Total Accumulated Precipitation Analysis 0230 - 1700 UTC GSLE Domain RunMax Precip (mm) Mean Precip (mm) Percent Change Area GTE 10 mm Precip (km 2 ) Area GTE 15 mm Precip (km 2 ) Area GTE 20 mm Precip (km 2 ) Trevor’s Thesis 26.81.10N/A731 Trevor’s Control 26.75501.235212.29 (From Thesis) 0.42 (From My Control) 75716228 My Control24.42991.2299N/A7396311

8. Trevor’s GSLE Total Accum. Graupel 0230-1700 UTC

9. My GSLE Total Accum. Graupel 0230-1700 UTC

10. Total Accumulated Graupel Analysis 0230 - 1700 UTC GSLE Domain RunMax Precip (mm) Mean Precip (mm) Percent Change Area GTE 2 mm Precip (km 2 ) Area GTE 10 mm Precip (km 2 ) Area GTE 15 mm Precip (km 2 ) Area GTE 20 mm Precip (km 2 ) Trevor’s Control 21.89200.2251-5.864766451307 My Control 19.87410.2391N/A68642140

11. Trevor’s GSLE Total Accum. Snow 0230-1700 UTC

12. My GSLE Total Accum. Snow 0230-1700 UTC

13. Total Accumulated Snow Analysis 0230 - 1700 UTC GSLE Domain RunMax Precip (mm) Mean Precip (mm) Percent Change Area GTE 10 mm Precip (km 2 ) Trevor’s Control 17.57560.84891.2654407 My Control16.12170.8383N/A357

14. Trevor’s GSLE Total Accum. Rain 0230-1700 UTC

15. My GSLE Total Accum. Rain 0230-1700 UTC

16. Total Accumulated Rain Analysis 0230 - 1700 UTC GSLE Domain RunMax Precip (mm) Mean Precip (mm) Percent Change Area GTE 3 mm Precip (km 2 ) Trevor’s Control 5.4256.16125.7172 My Control5.5652.1525N/A169

17. Changes in Thompson Scheme Graupel Density Increased Changes Size Distribution More smaller graupel 1-3mm and less larger graupel >8mm Increases mass especially of larger graupel Causes more small graupel accumulation in my control Snow fall velocity parameter in the fall speed power law Increased snow fall speed Reduced accumulated snow in my control Thompson 2008 noted increased precipitation accumulation with decreased fall speed Cloud Ice mass/number balance adjusted Rain processes slightly changed

18. Conclusions Differences between controls are small Changes in Thompson appear to correlate with differences in controls I expanded my RIP abilities I performed analytical comparisons of wrfout data I examined the Thompson scheme on the code level to find what had changed between versions I need to do more…

19. Way Ahead I think I need to further test the differences in Thompson Unsure how Analytically I need to get the correct equations out of the code. I have found two different equations for Graupel Gamma Intercept in the literature Average the mixing ratios/num of species over time and over the domain and over depth Vertically integrated mixing ratios

20. Way Ahead Present domain and time averages as profiles Model Level Graupel Mixing Ratio kg/kg Trevor’s Mine Each model level is domain averaged at Each 30 minute time step from 0230-1700 This values are averaged across the time period