VISTAS Phase II Visibility Modeling

Model Simulation Results

2009 and 2018 BaseG2a modeling results (May 2007)

• 2009: Ozone and PM25
• 2018: Ozone and PM25
• Visibility Projections: 12km (Best20% Worst20%) and 36km (Best20% Worst20%)
  (a collection of all zipped files containing individual xls files listed above can be downloaded here)
  

(A zip file containing all the following results and their intermediate files used in the process can be downloaded here (zip file ~20MB))

• 12km results:
  • 2009: Best20% Worst20%
  • 2018: Best20% Worst20%
  • 2009 and 2018: Deciview: Best20% Worst20% Extinction: Worst20%
• 36km results:
  • 2018: Best20% Worst20%
• Impact on international transport: 2018fA vs. 2018f1_nomxcn_cleanBC (12km and 36km GlidePath and Dotplots for worst20% days)
   

2002 Actual Base G2 (2002g2a) CMAQ 12km modeling results

• For complete MPE results please go to: VISTAS and ASIP Air Quality Model Performance Evaluation for Ozone, Fine Particulate Matter, and Visibility (2002 Actual Base G2 case)

2002 Actual Base G (2002ga1) CMAQ 12km/36km modeling results

• For complete MPE results please go to: VISTAS and ASIP Air Quality Model Performance Evaluation for Ozone, Fine Particulate Matter, and Visibility (2002 Actual Base G case)
• For a quick glance of model results and QA (2002ga1 vs. 2002gt1), see below:

   

  Spatial plots - 12km monthly and daily average model outputs

  Monthly average gifs (sorted by species)

  Daily average gifs:

  • Animated gifs for January: CO O3 ASO4 ANO3 ANH4 OC AEC fineSOIL CM ANaCl PM25; Gas Ratio
  • Animated gifs for February: CO O3 ASO4 ANO3 ANH4 OC AEC fineSOIL CM ANaCl PM25; Gas Ratio
  • Animated gifs for March: CO O3 ASO4 ANO3 ANH4 OC AEC fineSOIL CM ANaCl PM25; Gas Ratio
  • Animated gifs for April: CO O3 ASO4 ANO3 ANH4 OC AEC fineSOIL CM ANaCl PM25; Gas Ratio
  • Animated gifs for May: CO O3 ASO4 ANO3 ANH4 OC AEC fineSOIL CM ANaCl PM25; Gas Ratio
  • Animated gifs for June: CO O3 ASO4 ANO3 ANH4 OC AEC fineSOIL CM ANaCl PM25; Gas Ratio
  • Animated gifs for July: CO O3 ASO4 ANO3 ANH4 OC AEC fineSOIL CM ANaCl PM25; Gas Ratio
  • Animated gifs for August: CO O3 ASO4 ANO3 ANH4 OC AEC fineSOIL CM ANaCl PM25; Gas Ratio
  • Animated gifs for September: CO O3 ASO4 ANO3 ANH4 OC AEC fineSOIL CM ANaCl PM25; Gas Ratio
  • Animated gifs for October: CO O3 ASO4 ANO3 ANH4 OC AEC fineSOIL CM ANaCl PM25; Gas Ratio
  • Animated gifs for November: CO O3 ASO4 ANO3 ANH4 OC AEC fineSOIL CM ANaCl PM25; Gas Ratio
  • Animated gifs for December: CO O3 ASO4 ANO3 ANH4 OC AEC fineSOIL CM ANaCl PM25; Gas Ratio

   

  Spatial difference plots between 2002 Actual Base G and Typical G (2002ga1 vs. 2002gt1):

  • 36km: monthly average difference (zoom into southeast region including all VISTAS states)
  • 12km: monthly average difference

2002 Typical F4 with vs. without off-shore marine emissions

• Additions of off-shore marine emissions (ppt file)
  • July animation plots (mpeg movies) for: Sulfate and Nitrate

2018 No Mexican/Canadian emissions with Clean BC sensitivity run

• Bar Plots for annual average concentration comparisons for each species at each IMPROVE site (2018f1_nomxcn vs. 2018fA)
• Bar Plots for average concentration comparisons across worst 20% days for each species at each IMPROVE site (2018f1_nomxcn vs. 2018fA)
• Daily spatial difference plots: (2018f1_nomxcn vs. 2018fA)
• Animated gifs for January: AEC ANH4 ANO3 ASO4 CM CO fineSOIL O3 OC
• Animated gifs for February: AEC ANH4 ANO3 ASO4 CM CO fineSOIL O3 OC
• Animated gifs for March: AEC ANH4 ANO3 ASO4 CM CO fineSOIL O3 OC
• Animated gifs for April: AEC ANH4 ANO3 ASO4 CM CO fineSOIL O3 OC
• Animated gifs for May: AEC ANH4 ANO3 ASO4 CM CO fineSOIL O3 OC
• Animated gifs for June: AEC ANH4 ANO3 ASO4 CM CO fineSOIL O3 OC
• Animated gifs for July: AEC ANH4 ANO3 ASO4 CM CO fineSOIL O3 OC
• Animated gifs for August: AEC ANH4 ANO3 ASO4 CM CO fineSOIL O3 OC
• Animated gifs for September: AEC ANH4 ANO3 ASO4 CM CO fineSOIL O3 OC
• Animated gifs for October: AEC ANH4 ANO3 ASO4 CM CO fineSOIL O3 OC
• Animated gifs for November: AEC ANH4 ANO3 ASO4 CM CO fineSOIL O3 OC
• Animated gifs for December: AEC ANH4 ANO3 ASO4 CM CO fineSOIL O3 OC
• Monthly spatial difference plots: (2018f1_nomxcn vs. 2018fA)
A25 AEC ANH4 ANO3 ASO4 CM CO fineSOIL O3 OC PM25
• Monthly time series plots for 2018f1_nomxcn and 2018fA
January February March April May June July August September October November December

2018 Air Quality Model Projections

• Excel spread sheets calculating visibility projections (15.3 MB zip file), including a README doc explaining how it works. (posted 5/9/2005)
• Preliminary 2018 OTWc Visibility Projections at VISTAS Class I Areas (PPT file, and excel spread sheets in zip file, posted 4/22/2005)
• List of PPT files for individual Class I Sites:

In VISTAS regions:

CHAS     COHO     DOSO     EVER     GRSM     JARI     LIGO     MACA     OKEF     ROMO     SAMA     SHEN     SIPS     SWAN

In Non-VISTAS regions:

BRIG     CACR     HEGL     MING     UPBU    

2002 Annual Model Results

2002 36k baseE

• Model performance evaluation results
  • 2002 36km baseE

2002 36k Typical

• Model performance evaluation results
  • 2002 36km Typical vs. Actual
  • 2002 36km Typical vs. 12km Typical

2002 12k Typical

• Daily 12km ambient overlay plots for major aerosol species:
  • Animated gifs for February: NO3 SO4 OC EC SOIL CM PM25
  • Animated gifs for July: NO3 SO4 OC EC SOIL CM PM25

2002 Version Base C Dust only CMAQ Evaluation Results (CMAQ running without chemistry and aerosol modules)

• Monthly model evaluation results for IMPROVE and SEARCH Daily networks (posted on 12/7/04)

2002 Version Base C CMAQ Evaluation Results (using CMAQ v4.4 final)

• Pave ambient-model daily overlay plots (for summer and winter months only) in Vistas 12km domain region(posted on 12/5/04)
  • extracts from 36km
  • true 12km
• Model performance evaluation results
  • 2002 CMAQ CB4 12km vs. 36km(posted on 12/5/04)
  • 2002 CMAQ CB4 12km (posted on 12/2/04)
  • 2002 CMAQ CB4 36km (posted on 11/23/04)

2002 Version Base A CMAQ v44beta vs. v44 final release (posted on 10/27/04)

• January comparisons:
  • Model-to-model spatial difference plots for key species (animated gifs)
  • Model performance evaluation against ambient networks (Vistas region only)
• July comparisons:
  • Model performance evaluation against ambient networks (Vistas region only)

2002 Version Base A CMAQ Evaluation Results (using CMAQ v4.4 beta)

• Comparison of CMAQ CB4 36km vs. 12km

2002 Version Base A Nitrate Overestimation Investigation Results (Jan 02 case)

• Base A with CMAQ v4.4beta
• 60% NH3 emission reduction
• 50% reduction on reaction probability for heterogeneous HNO3 formation rate
• Dry deposition velocity doubled for HNO3 and ANO3
• Dry deposition velocity doubled for NH3
• Summary Results (ppt and pdf files)

January 2002 "best and final" Model Results

• Comparison of CMAQ version 4.3 vs. CMAQ version 4.4
• Comparison of CMAQ version 4.4beta EBI CB4 vs. SAPRC99
• Comparison of CMAQ version 4.3 CB4 12km vs. 36km
• Comparison of CMAQ version 4.4beta EBI CB4 12km vs. 36km
• Comparison of CMAQ version 4.4beta EBI SAPRC99 12km vs. 36km

July 2001 "best and final" Model Results

• Comparison of CMAQ v4.4beta EBI CB4 36km vs. 12km
• Comparison of CMAQ v4.4beta EBI SAPRC99 36km vs. 12km
• Comparison of CMAQ v4.4beta EBI 36km CB4 vs. SAPRC99
• Comparison of CMAQ v4.4beta EBI 12km CB4 vs. SAPRC99
• Comparison of CMAQ v4.3 MEBI CB4 36km vs. 12km (updated Sept 30, 2004)

University of California, Riverside
 Bourns College of Engineering
  Center for Environmental Research & Technology