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Development of 2016 Hemispheric Emissions for CMAQ

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1 Development of 2016 Hemispheric Emissions for CMAQ
October 24, 2018 Presented by: Jeff Vukovich A. Eyth, B. Henderson, C. Jang (US EPA OAQPS) C. Allen, J. Beidler, K. Talgo (CSRA-GDIT)

2 Project Overview Goal: Support a northern hemispheric CMAQ run for year 2016 using the latest available emissions data to better understand hemispheric transport of biogenic and anthropogenic pollutants Implement N. American emissions inventories using latest 2016 modeling platform Integrate a recently acquired year 2015 China inventory Project year 2010 Hemispheric Transport of Air Pollutants (HTAP) v2 gridded inventories to more current year EPA OAQPS, Emission Inventory and Analysis Group

3 Emissions Modeling Process
Ancillary Data: profiles and cross references SMOKE SMOKE software performs temporal allocation, spatial allocation, speciation, and plume rise to create: Temporal Profiles Inventories (annual, monthly, daily, hourly) Met. Data Speciation Profiles Go quickly: Ancillary data = temporal profiles, speciation profiles, spatial surrogates Gridded, hourly, speciated emissions in a format for an air quality model Spatial Surrogates

4 Challenges Achieving consistency throughout the hemisphere in speciation, spatial allocation, temporal allocation, and vertical allocation Preparing emissions for the rest of the northern hemisphere based on gridded inventories Implementing new China inventory Obtaining hemispheric inventories for fires and biogenics Projecting HTAP gridded inventory to a more current year Zeroing out HTAP inventory over North America Give a quick introduction to emissions modeling Specifics about 2011v6.2 platform EPA OAQPS, Emission Inventory and Analysis Group

5 Use of HTAP inventories
Resolution: 0.1 degrees latitude by 0.1 degrees longitude for year 2010 Pollutants: CO, NMVOC, NOx, SO2, NH3, PM10, PM2.5, black carbon (BC) and organic carbon (OC) Emissions sectors: agriculture, aircraft, industry, power industry (i.e., energy), ground transport, residential, and shipping Some sectors have monthly inventories, others annual SMOKE 4.0 and later: read gridded inventories and regrid them onto a desired modeling grid Layering: uses constant layer fractions (J. Xing) since there are no stack parameters EPA OAQPS, Emission Inventory and Analysis Group

6 NOx from Selected HTAP Sectors
Aircraft Cruising Shipping kg NOx/day Industry Ground transport EPA OAQPS, Emission Inventory and Analysis Group

7 Community Emissions Data System (CEDS) for Historical Emissions
Global emissions datasets that include current years (through 2014) and by country Hoesly et al, Historical (1750–2014) anthropogenic emissions of reactive gases and aerosols from the Community Emissions Data System (CEDS), Geoscientific Model Development, 2018, Vol. 11, p EPA OAQPS, Emission Inventory and Analysis Group

8 Using CEDS to project HTAPv2 from 2010 to 2014
HTAPv sector CEDS sector g_ag "Agriculture" or "AGRICULTURE" g_energy "Energy production" or "POWER" g_industry "Industrial" or "INDUSTRY" + "Solvents production and application" or "SOLVENTS" g_transport "Transportation" or "TRANSPORT", g_residential "Residential, Commercial, Other" or "RESIDENTIAL" + "Waste" or "WASTE" g_ships "International Shipping" or "SHIP" * Note factors not available for aircraft projections EPA OAQPS, Emission Inventory and Analysis Group

9 Using CEDS to project HTAPv2 from 2010 to 2014(2)
Use emissions trends from 2010 to 2014 in the CEDS data to generate a projection factor for each HTAPv2 sector The CEDS-derived projection factors were applied by HTAPv2 sector and by country and by pollutant Example: EPA OAQPS, Emission Inventory and Analysis Group

10 2015 China inventory School of Environment, Tsinghua University, Beijing 16 different emissions sectors Gridded emissions for a 27km Lambert Conformal grid Included Hong Kong and Macau; not Taiwan CAPS emissions provided except CO Used HTAPv2 CO emissions CB6 speciation provided Monthly, weekly, diurnal profiles provided Used same vertical layering allocation as used with HTAP gridded inventories EPA OAQPS, Emission Inventory and Analysis Group

11 2015 China inventory (2) 16 different sectors and the pollutants provided in each sector * Note open burning not used; FINN fires used EPA OAQPS, Emission Inventory and Analysis Group

12 NOX Domestic fossil fuels NOX Domestic bio-fuels
NOX Road transport NOX Power plant 165 75 NOX Domestic fossil fuels NOX Domestic bio-fuels 2 6 OAQPS, Emission Inventory and Analysis Group

13 Other Inventories U.S. anthropogenic inventories based on emissions modeling platform which includes 2014NEIv2 Including the inventories for Alaska, Hawaii, Puerto Rico, and Virgin Islands U.S. fires from 2016 emissions modeling platform Biogenic from BEISv3.61 for USA Canada 2016 (interpolated), Mexico 2016 (interpolated) Fire INventory from NCAR (FINN) used outside U.S. FINN includes “croplands” fires (did not use HTAPv2 ag fires) MEGAN v2.1 for outside of USA Monthly GEIA Lightning NOx inventory used Spatially vary diurnal profiles generated Ocean chlorine consistent with modeling platform EPA OAQPS, Emission Inventory and Analysis Group

14 Supporting SMOKE Input Files
GEOCODE contains all country, state, county and district definitions (replaces COSTCY) GRIDMASK file (for 0.1x0.1 grid) assigns GEOCODEs and time zones to each grid cell EPA OAQPS, Emission Inventory and Analysis Group

15 January Residential PM2.5
Residential emissions have two peaks: morning and evening local time 00Z 12Z All times in GMT France India EPA OAQPS, Emission Inventory and Analysis Group

16 Spatial Allocation Spatial Surrogates for U.S., Canada, and Mexico developed for the hemispheric grid 187x187 polar stereographic 108km x 108km Covered outlying areas: AK/HI/PR/VI Spatial cross-reference had to be updated No surrogates needed outside of North America because inventories are regridded EPA OAQPS, Emission Inventory and Analysis Group

17 Vertical Distribution
Emissions created for 44 layers Layer 1 median at 10m, and layer 44 at 18,200m SMOKE plume rise used in North America Based on stack parameters Fires have a special treatment HTAP emissions Use SMOKE program Layalloc to put emissions at specific height ranges Aircraft emissions split into landing and takeoff (layers 1-15), climbing and descent (16-33), and cruising (34- 38) Improved allocation of shipping and industry sources implemented FINN: fires assigned to specific height ranges EPA OAQPS, Emission Inventory and Analysis Group

18 Vertical Distributions by Sector
Km 1 .01 25 4.2 5 0.1 30 6.8 10 0.4 35 15 0.9 40 14 20 2.1 44 18 EPA OAQPS, Emission Inventory and Analysis Group

19 Speciation Carbon Bond 6 (CB06)-based speciation
Used 2016 platform within North America Set of speciation profiles for HTAP based on the previous (e.g. 2011) platform averages For HTAP, only a single speciation profile can be used per sector, country and pollutant HTAP BC and OC inventory pollutants were used directly Rest of PM2.5 speciated into CMAQ’s AE6 EPA OAQPS, Emission Inventory and Analysis Group

20 Examples of merged emissions
July weekday NOX July weekday PM2.5 EPA OAQPS, Emission Inventory and Analysis Group

21 Examples of merged emissions (2)
July weekday VOC July weekday SO2 EPA OAQPS, Emission Inventory and Analysis Group

22 Future Work More emissions sensitivity studies where we evaluate the impact of changing emissions in other parts of the world Consider other methods to obtain future-year projections for non-U.S. emissions using alternative sources (e.g. trends from satellite data) Improvements to biogenic emissions Improvements to layering Possible release of hemispheric emissions modeling platform later Questions can be directed to or OAQPS, Emission Inventory and Analysis Group

23 References Xing, J., R. Mathur, J. Pleim, C. Hogrefe, C.-M. Gan, D. Wong, C. Wei, R. Gilliam, and G. Pouliot (2015), Observations and modeling of air quality trends over 1990–2010 across the Northern Hemisphere: China, the United States and Europe, Atmospheric Chemistry and Physics, 15(5), Xing, J., J. Pleim, R. Mathur, G. Pouliot, C. Hogrefe, C. M. Gan, and C. Wei (2013), Historical gaseous and primary aerosol emissions in the United States from 1990 to 2010, Atmos. Chem. Phys., 13(15), , doi: /acp Janssens-Maenhout, G., M. Crippa, D. Guizzardi, F. Dentener, M. Muntean, G. Pouliot, T. Keating, Q. Zhang, J. Kurokawa, and R. Wankmüller (2015), HTAP_v2. 2: a mosaic of regional and global emission grid maps for 2008 and 2010 to study hemispheric transport of air pollution, Atmospheric Chemistry and Physics, 15(19), Pouliot, G., T. Keating, G. Maenhout, C. Chang, J. Beidler, and R. Cleary (2014), The Incorporation of the US National Emission Inventory into Version 2 of the Hemispheric Transport of Air Pollutants Inventory, in Air Pollution Modeling and its Application XXIII, edited, pp , Springer International Publishing. EPA OAQPS, Emission Inventory and Analysis Group

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