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Trace Gases and Aerosol Optical Properties Over the US Mid-Atlantic During Summer 2001 Bruce Doddridge 1,2 and Charles Piety 1 1 Department of Meteorology.

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Presentation on theme: "Trace Gases and Aerosol Optical Properties Over the US Mid-Atlantic During Summer 2001 Bruce Doddridge 1,2 and Charles Piety 1 1 Department of Meteorology."— Presentation transcript:

1 Trace Gases and Aerosol Optical Properties Over the US Mid-Atlantic During Summer 2001 Bruce Doddridge 1,2 and Charles Piety 1 1 Department of Meteorology 2 Chemical Physics Program University of Maryland at College Park AGU Fall Meeting 2001

2 RAMMPP Operational Components (Regional Atmospheric Measurement Modeling and Prediction Program) Ozone Forecasting Piety/Ryan http://www.meto.umd.edu/~forecaster/ozone_fcst.html Measurements Doddridge/Marufu http://www.meto.umd.edu/~bruce/rammpp01.html Remote Sensing Dickerson/Hudson Modeling –Meteorological MM5Zhang http://www.meto.umd.edu/MM5/newrealtime.html –Chemical transport Models-3/CMAQStehr Emissions Ehrman/Calabrese –SMOKE (with UMd/ENCH update)

3 RAMMPP Aircraft Flights 1992-2001 YearProjectRegionDaysHours 1992MDE-ARMABaltimore-Washington Area 415.2 1993MDE-ARMABaltimore-Washington Area 830.3 1994NASA/STS-59, 68Maryland Eastern Shore 413.0 1995MDE-ARMA NASA/CAMEX-II Baltimore-Washington Area Off Maryland Atlantic Coast 5 2 19.5 7.2 1996NARSTO-NortheastMid-Atlantic1395.0 1997NARSTO-NortheastMid-Atlantic12105.0 1998MDE-ARMA NARSTO/NE-OPS Mid-Atlantic Philadelphia, PA Area 6 27.3 26.0 1999MDE-ARMA NARSTO/NE-OPS EPRI/MARCH-Atlantic Mid-Atlantic Philadelphia, PA Area Maryland 4 11 2 7.3 51.5 5.4 2000MDE-ARMA NCDAQ EPRI/MARCH-Atlantic Mid-Atlantic North Carolina-Virginia Maryland 635635 33.9 14.1 15.8 2001MDE-ARMA NARSTO/NE-OPS NCDAQ VADEQ DOE-NETL/ESP01 Mid-Atlantic Philadelphia, PA Area Raleigh, NC & Charlotte, NC Areas Richmond, VA Area Pittsburgh, PA Area 11 9 4 9 4 34.8 37.6 23.5 34.6 23.8 TOTAL128620.8

4 Aztec-F Research Aircraft N500Z GPS Position (°Lat, °Long) Meteorology (T, RH, Pr, P alt ) Carbon Monoxide (CO) Ozone (O 3 ) Sulfur Dioxide (SO 2 ) Aerosol Optical Properties: Absorption, B ap (565 nm) Scattering, B scat (450,550,700 nm) Aircraft operated by University Research Foundation

5 RAMMPP 2001 Science Crew Emily TenenbaumBruce Doddridge

6 Operations Bases During 2001 Philadelphia, PA Pittsburgh, PA College Park, MD Richmond, VA Raleigh, NC Charlotte, NC

7 RAMMPP 2001: Regional Coordination MDE-ARMA Balt.-Wash. corridor NE-OPS 2001 Philadelphia, PA VADEQ Richmond, VA NCDAQ Raleigh/Charlotte, NC ESP01 Pittsburgh, PA Baltimore, MD Some Key Interests Importance of W transport Profiler evaluation Valley pollutant reservoir Increasing BG regional O 3 Model evaluation Trans-boundary plumes Cross-corridor effects Oxidant-PM relationship

8 PBL Height: A Critical Factor in Determining Air Quality Easton, MD RH Profiles 6/27 and 6/28 6/276/28

9

10 mean ~92 ppbv mean ~97 ppbv Similar amounts of ozone were produced on the 27 th and 28 th but a deeper mixing depth on the 28 th diluted the plume 6/28 6/27 Plots of ozone during the 0W3 to ESN traverse A E Downwind of Baltimore AldinoEaston

11 Urban Input and Downwind Air Quality: Wind Fields 15Z 06/27 NOAA/ARL 15Z 06/28 B E B E

12 Urban Corridor Input: Inventory Test? Compare Several Years With EPA Emissions Inventories

13 NE-OPS: Lidar Comparison Conducted with Russell Philbrick (PSU) Northeast Philadelphia, PA Summer: 199819992001 Intensive comparisons with aircraft Water vapor Ozone Extinction

14 Lidar/Aircraft Comparison: H 2 O Lidar coutesy: R. Philbrick, PSU NE-OPS 2001: Phila, PA

15 Lidar/Aircraft Comparison: b scat Lidar courtesy: R. Philbrick, PSU NE-OPS 2001: Phila, PA

16 Tropospheric Ozone From TOMS: TDOT (TOMS Direct Ozone in the Troposphere)

17 TDOT Validation: Jul 17, 1999 Qualitative consistency between the TDOT product and in situ profile data (aircraft & sonde) TDOT offers potential as an important new tool in mapping synoptic-scale tropospheric ozone The TDOT Team: RD Hudson, Univ. Maryland AD Frolov, Univ. Maryland AM Thompson, NASA/GSFC estimated sfc-15.6km TDOT Phila 72 75 Balt 65 61 (units are DU)

18 Aug 7 Plume Study: Chemistry 123 x 10 x 2

19 Aug 7 Plume Study: Aerosol Optics 123

20 Aug 7 Plume Study: Trajectories Plume 1 Plume 2 Plume 3 Fresh Moderately AgedAged

21 Aug 7 Plume Study: Summary Stratified layers are routinely observed over the Mid-Atlantic under ridging conditions Observed plumes show different character depending on: – source region – air parcel age Correlation between SO 2 and b scat

22 Aug 8, 2001 Recirculation Study Surface O 3 Key (ppbv): > 124 111-124 100-110 80-99 Richmond, VA Locations: Virginia Science Museum Chesterfield Co. Henrico Co. Map courtesy EPA/OAQPS Air Now

23 Aug 8: Wind Profiles and O 3 SFC-2000 m winds from VADEQ Doppler wind profiler in Richmond, VA (VSM) Near SFCAloft 1200 EDT E—NE W 1600 EDT W NE 102 ppbv at 500-1000 m over Chesterfield Co. (FCI, SW of RIC) in the AM 122 ppbv at 1300-1900 m over FCI in the PM SFC Monitor Peak 1-hr O 3 : Henrico Co.136 ppbv(E of RIC) A double dose of Richmond emissions?

24 Aug 8: VSM Profiler FCI Profiles: 1 2

25 Aug 8: Aircraft Profiles 12

26 Aug 8 Profiler Evaluation

27 Importance of Low-Level Jets Routinely set up over the Mid-Atlantic plain during summer nighttime Chemistry poorly understood – transport mechanism for remnant O 3 & O 3 /haze precursors? 2002 Study? –Networked profilers –Aircraft flights –With MANE-VU effort

28 Radar/RASS Profiler Sites 2002 Vertical wind and temperature profiles up to 3,000 meters For more info see http://www.profiler.noaa.gov/jsp/aboutBlp.jsp Map courtesy MANE-VU

29 RAMMPP Project Summary 10 years of aircraft data Developing a chemical climatology of ozone haze and selected precursors over the mid-Atlantic region Data summaries for 1992-2001 on line: http://www.meto.umd.edu/~bruce/rammpp01.html Collaborative opportunities welcomed

30 Acknowledgements Current UMd Flight Crew: Lackson Marufu Emily Tenenbaum (at Pomona Coll.) Jeff Stehr Tressa Pearson-Franks (at GWU) UMd/PSU Meteorological Support: Bill Ryan (Penn. St. Univ.) Dalin Zhang Recent Funding from: Maryland Department of Environment-ARMA US-EPA through NARSTO/NE-OPS NC Division of Air Quality VA Department of Environmental Quality US-DOE/National Energy Technology Laboratory

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