‘NASA OMI Project’ MOZART Ozone Tracer Tracking for AIRPACT-4 CMAQ Joseph Vaughan,George Mount, Serena Chung, Brian Lamb, Rui Zhang, Louisa Emmons and.

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Presentation transcript:

‘NASA OMI Project’ MOZART Ozone Tracer Tracking for AIRPACT-4 CMAQ Joseph Vaughan,George Mount, Serena Chung, Brian Lamb, Rui Zhang, Louisa Emmons and Farren Herron-Thorpe 1 Laboratory for Atmospheric Research, Washington State University, Pullman, W, USA 2 Washington Department of Ecology, Lacy, WA, USA

Introduction and Review Dan Jaffe and Nicole Widger, with our collaboration in modeling, have explored and documented ozone enrichment from Long Range Transport as well as identification of periods of Stratospheric Ozone Intrusion (Wigder et al. 2013). April 6, 2010, 4 UTZ: MBO 8-hr O3 was observed to be 61.5 ppb. – AIRPACT tracers from western boundary Mozart O3 layers ( mb) showed /- 21 ppb O3 in volume above MBO. April 6, 2010, 14 UTZ: observed 47 ppb at Boise. – AIRPACT tracers showed 22.4 ppb, – Full-chemistry AIRPACT modeled 44.5 ppb.

Introduction and Review Long-range-transport is an issue for the suitability of state- scale regulation in controlling ozone. Stratospheric-Ozone-Intrusion (SOI) and LRT are grounds for application for exceptional event designation for ozone exceedences, for ozone compliance. We decided to try and do a better job of using Mozart results for tracers in AIRPACT-4, resulting in posters to CMAS and AGU and an abstract for a paper to Atmos. Env. due in August.

Overview 1.Period selected Apr thru Jul MOZART tracers instead of by layers 3.Model configuration change 4.Results (sampled sparsely, draft and tentative) 5.Concluding comments...

Chose April-July 2012

MOZART Tracers from Louisa Emmons O3A Ozone from Asia (Lat and Lon bounds) O3S Ozone from Stratosphere CO01 Carbon monoxide from Asia-Anthro CO02 Carbon monoxide from Asia-fires CO03 Carbon monoxide from Siberia CO (fires)

Model Configuration Standard CMAQ at 37 layers – Standard full chemistry CMAQ. – 37 layers of WRF meteorology. Tracer CMAQ – CMAQ on AIRPACT-4 (4-km) domain. – Full 37 layers available from WRF 4-km. – Tracers defined by MOZART Tracers (5). – Tracers provided on all four boundaries. – Deposition turned on. – No emissions.

? ? Also, MCIP guidance says that collapsing of more than two layers can cause problems

MOZART results for region for tracers 05/12/2012

MOZART results for region for tracers 05/13/2012

Ratios of O3S/O3 and O3A/O3 Tracer O3S and O3A are with no removal except deposition... O3 values are from full AIRPACT chemistry with deposition Caveat is that we are now looking at Ratio of “Apples and Oranges”

Ratio of O3S to O3 (daily, for 8-hr O3 max period) April – July 2012

Ratio of O3A to O3 (daily, for 8-hr O3 max period) April – July 2012

April 2, 2012 May 13, 2012 All at 12 PST O3A tracer O3S tracer Noon-8 PM

April 2, 2012 May 13, 2012 All at 17 PST O3A tracer O3S tracer 5 PM – 1 AM

Concluding comments We need to do more checking and QA to be sure these result are meaningful, despite their intrinsic and acknowledged shortcomings. We need to compare with results by others looking at LRT and SOI. Want to produce a monthly climatology of O3S and O3A as an index of possible Asian and Stratospheric influence. Want to analyze specific episodes of LRT and SOI. Need to refine and redo process from MCIP forward to identify an accurate and affordable set of layers for operational AIRPACT-4 use.

Stay tuned...