1. Biocomplexity Project: N-deposition Model Evaluation UCR, CE-CERT, Air Quality Modeling Group Model Performance Evaluation for San Bernardino Mountains (SBM) Monitoring Sites Gail Tonnesen, Chao-Jung Chien, Zion Wang, Mohammad Omary CE-CERT, UCR April 25, 2006

2. Biocomplexity Project: N-deposition Model Evaluation UCR, CE-CERT, Air Quality Modeling Group Objectives UCR Fire Lab has long term HNO3 data in Western Riverside County that can be used in air quality model evaluations. CE-CERT models have been previously evaluated using several ambient data networks but N species data is sparse in Riverside County. Goal: Compare CE-CERT model predictions with Fire Lab N data.

3. Biocomplexity Project: N-deposition Model Evaluation UCR, CE-CERT, Air Quality Modeling Group SBM monitoring data ~11 monitoring stations being evaluated (data from UCR Fire Lab). 2-week long sampling periods from April through October in 2002; total of 11 periods. Gaseous HNO3 (ug/m3) data.

4. Biocomplexity Project: N-deposition Model Evaluation UCR, CE-CERT, Air Quality Modeling Group Air Quality Modeling Results Modeling system: CMAQ, MM5, SMOKE. –Case 1: WRAP 2002 Base C annual run: Modeling domain: US continent; 36km grid spacing, 148 x 112 grid cells. –Case 2: Ndep 2002 base annual run: Modeling domain: State of California; 4km grid spacing, 144 x 225 grid cells.

5. Biocomplexity Project: N-deposition Model Evaluation UCR, CE-CERT, Air Quality Modeling Group Selected Summary Statistical Results

6. Biocomplexity Project: N-deposition Model Evaluation UCR, CE-CERT, Air Quality Modeling Group All Days at Each Site Model to Data Comparisons

7. Biocomplexity Project: N-deposition Model Evaluation UCR, CE-CERT, Air Quality Modeling Group All Sites and All Days Comparisons 36kwrap vs. 4kndep

8. Biocomplexity Project: N-deposition Model Evaluation UCR, CE-CERT, Air Quality Modeling Group Time series and scatter plots for all days at site: AO 36kwrap vs. 4kndepAmb. vs. 36kwrap vs. 4kndep

9. Biocomplexity Project: N-deposition Model Evaluation UCR, CE-CERT, Air Quality Modeling Group Time series and scatter plots for all days at site: BF 36kwrap vs. 4kndepAmb. vs. 36kwrap vs. 4kndep

10. Biocomplexity Project: N-deposition Model Evaluation UCR, CE-CERT, Air Quality Modeling Group Time series and scatter plots for all days at site: BP 36kwrap vs. 4kndepAmb. vs. 36kwrap vs. 4kndep

11. Biocomplexity Project: N-deposition Model Evaluation UCR, CE-CERT, Air Quality Modeling Group Time series and scatter plots for all days at site: CP 36kwrap vs. 4kndepAmb. vs. 36kwrap vs. 4kndep

12. Biocomplexity Project: N-deposition Model Evaluation UCR, CE-CERT, Air Quality Modeling Group Time series and scatter plots for all days at site: GV 36kwrap vs. 4kndepAmb. vs. 36kwrap vs. 4kndep

13. Biocomplexity Project: N-deposition Model Evaluation UCR, CE-CERT, Air Quality Modeling Group Time series and scatter plots for all days at site: HP 36kwrap vs. 4kndepAmb. vs. 36kwrap vs. 4kndep

14. Biocomplexity Project: N-deposition Model Evaluation UCR, CE-CERT, Air Quality Modeling Group Time series and scatter plots for all days at site: HV 36kwrap vs. 4kndepAmb. vs. 36kwrap vs. 4kndep

15. Biocomplexity Project: N-deposition Model Evaluation UCR, CE-CERT, Air Quality Modeling Group Time series and scatter plots for all days at site: KP 36kwrap vs. 4kndepAmb. vs. 36kwrap vs. 4kndep

16. Biocomplexity Project: N-deposition Model Evaluation UCR, CE-CERT, Air Quality Modeling Group Time series and scatter plots for all days at site: MC 36kwrap vs. 4kndepAmb. vs. 36kwrap vs. 4kndep

17. Biocomplexity Project: N-deposition Model Evaluation UCR, CE-CERT, Air Quality Modeling Group Time series and scatter plots for all days at site: OS 36kwrap vs. 4kndepAmb. vs. 36kwrap vs. 4kndep

18. Biocomplexity Project: N-deposition Model Evaluation UCR, CE-CERT, Air Quality Modeling Group Time series and scatter plots for all days at site: SP 36kwrap vs. 4kndepAmb. vs. 36kwrap vs. 4kndep

19. Biocomplexity Project: N-deposition Model Evaluation UCR, CE-CERT, Air Quality Modeling Group Spatial Overlay Plots (SBM data shown in diamonds)

20. Biocomplexity Project: N-deposition Model Evaluation UCR, CE-CERT, Air Quality Modeling Group

21. Biocomplexity Project: N-deposition Model Evaluation UCR, CE-CERT, Air Quality Modeling Group

22. Biocomplexity Project: N-deposition Model Evaluation UCR, CE-CERT, Air Quality Modeling Group

23. Biocomplexity Project: N-deposition Model Evaluation UCR, CE-CERT, Air Quality Modeling Group Summary Model performance is reasonably good compared to other model evaluation studies: –longer term averages of model and data tend to show better performance than do hourly or daily comparisons. Better model performance with 4km grid. The data has more spatial variability than does the model, even at the finer 4km grid: –use of finer grid and better land use data might improve the model spatial resolution.

24. Biocomplexity Project: N-deposition Model Evaluation UCR, CE-CERT, Air Quality Modeling Group Conclusions The model performs reasonably well, and these model results can be used in future analyses, however, additional effort should be made to improve the accuracy and spatial resolution of the model predictions.