Presentation is loading. Please wait.

Presentation is loading. Please wait.

Assessment of aerosol direct effects on surface radiation in the northern hemisphere using two-way WRF-CMAQ model Jia Xing, Jonathan Pleim, Rohit Mathur,

Published byCrystal Ellis Modified over 9 years ago

Similar presentations

Presentation on theme: "Assessment of aerosol direct effects on surface radiation in the northern hemisphere using two-way WRF-CMAQ model Jia Xing, Jonathan Pleim, Rohit Mathur,"— Presentation transcript:

1 Assessment of aerosol direct effects on surface radiation in the northern hemisphere using two-way WRF-CMAQ model Jia Xing, Jonathan Pleim, Rohit Mathur, David Wong, George Pouliot, Christian Hogrefe, Chuen-Meei Gan, Chao Wei U.S. Environmental Protection Agency, Research Triangle Park, NC 27711, USA 12th Annual CMAS Conference, October 30, 2013

2 Motivation To extend the applicability of the two-way WRF- CMAQ model to hemispheric scales To assess the model’s ability in reproducing the decadal changes in surface radiation (e.g. dimming and brightening) in the north hemisphere from 1990-2010 when significant of changes in emissions occurred To provide boundary conditions for long-term regional-scale CMAQ simulations at finer resolution

3 Outline Emission processing & model configuration Result discussion Trends in AOD & Clear-sky Shortwave radiation (SWR) Aerosol impacts on T2, PBL Height, SWR, PM 2.5 and O 3 Dust aerosol direct effects on clear-sky SWR Summary

4 Emission processing Historic anthropogenic emissions in three regions over the past two decades Anthropogenic emissions were derived from EDGAR (Emission Database for Global Atmospheric Research); Biogenic VOC and lightning NOx emissions were obtained from GEIA (Global Emission Inventory Activity); Temporal distribution was referred to EDGAR default profile; Speciation was referred to SMOKE profile; Vertical allocation was referred to SMOKE plume-rise and EMEP profile. SO 2 NO x Primary PM 10

5 Model Setup Simulation period: from 1990 to 2009 (summer time-JJA) Two scenarios: WRF-CMAQ(nf): no-feedback WRF-CMAQ(sf): with shortwave feedback (-aerosol direct effects) Hemispheric WRF-CMAQ two-way model ─WRF3.4: NCEP/NCAR Reanalysis data with 2.5 degree spatial and 6-hour temporal resolution; NCEP ADP Operational Global Surface/ Upper Air Observations with 6 hour intervals, MODIS land-use type, RRTMg radiation scheme, ACM2 (Pleim) PBL, PX LSM. ─CMAQ5.0: Cb05-AERO6 chemistry, tropopause ozone calculated from PV (potential vorticity), inline photolysis, inline dust emission module. East China Europe East US Simulation domain: 108×108 km resolution over northern hemisphere 44 layers from surface to 50mb Three sub-regions will be analyzed

6 Trend in Aerosol Optical Depth (AOD) 2000 MODIS+ SeaWiFS WRF-CMAQ (sf) JJA-average MODIS - level 3 Terra SeaWiFS - level 3 Deep Blue Missing value in MODIS (mostly in Sahara Desert) was filled by SeaWiFS (550nm) 533nm 2009

7 Trend in Aerosol Optical Depth (AOD) MODIS+ SeaWiFS WRF-CMAQ(sf) East ChinaEast USEurope JJA-average (2009 minus 2000) from 1990 to 2009

8 Trend in clear-sky shortwave radiation CERES East ChinaEast USEurope JJA-average (2009 minus 2000) WRF-CMAQ(sf)WRF-CMAQ(nf) brightening Dimming from 1990 to 2009 Unit: W m -2

9 Aerosol impacts on Surface SW-radiation 1990 JJA-average from WRF-CMAQ difference between sf and nf (i.e., sf - nf ) Unit: W m -2 1990-2009 2009

10 Aerosol impacts on Surface Temperature 1990 JJA-average from WRF-CMAQ difference between sf and nf (i.e., sf - nf ) Unit: K 1990-2009 2009

11 Aerosol impacts on PBL Height 1990 JJA-average from WRF-CMAQ difference between sf and nf (i.e., sf - nf ) Unit: meter 1990-2009 2009

12 Simulated surface PM 2.5 conc. 1990 2009 JJA-average from WRF-CMAQ(sf) Unit: µg m -3 1990-2009

13 Aerosol impacts on PM 2.5 conc. 1990 2009 difference between sf and nf (i.e., sf - nf ) Unit: µg m -3 1990-2009

14 Simulated surface O 3 mixing ratio 1990 2009 JJA 24 hour-average from WRF-CMAQ(sf) Unit: ppbV 1990-2009

15 Aerosol impacts on O 3 mixing ratio 1990 difference between sf and nf (i.e., sf - nf ) Unit: ppbV 1990-2009 2009

16 WRF-CMAQ (nf)WRF-CMAQ (sf)CERES (2006 minus 2000) Unit: W m -2 Dust Aerosol impacts on Clear-sky SSR June July brightening Dimming brightening Dimming

17 AOD 2000 SWR 2006-2000 AOD 2006 Satellite (June)Model (June)Satellite (July)Model (July) brightening Dimming

18 Summary Hemispheric WRF-CMAQ model system was successfully set up. Results of magnitude and spatial distribution of AOD generally agree with MODIS satellite retrievals; Trends of clear-sky SW-radiation roughly reflect the brightening & dimming in three regions. Aerosol direct impacts were evaluated. The reductions in surface solar radiation, surface-level temperature, and PBL height arising from aerosol direct effects show distinct trends in response to changes in regional aerosol loading PM 2.5 will be enhanced in industrial regions, but reduced in windblown dust area. Capability of two-way coupled WRF-CMAQ model to represent the aerosol direct effects and to reproduce the observed changes in radiation was performed through comparison with CERES satellite retrieval.

19 Thank you for your time! Acknowledgement This work was supported through and Inter-Agency Agreement between the EPA and DOE and does not represent the views of either Agency. We also acknowledge the free use of EDGAR, GEIA, MODIS, SeaWiFS and CERES product.

20 EDGAR v42 gridded annual sectoral emissions 1990-2008 SO 2 NO x CO NH 3 CH 4 PM 10 PM 2.5 SULF NO 2 NO PFINE PNO3 PSO4 POC PEC VOC EDGAR HTAPv1 gridded annual sectoral emissions 2000-2005 Hemisphere -CMAQ Projection system conversion, incl.: Horizontal & Vertical distribution Projection system conversion, incl.: Horizontal & Vertical distribution Monthly/ Weekly/ Hourly variation Monthly/ Weekly/ Hourly variation Speciation SMOKE - default CB05 species EDGAR - default PMC SO 2 GEIA Framework of emission processing

Download ppt "Assessment of aerosol direct effects on surface radiation in the northern hemisphere using two-way WRF-CMAQ model Jia Xing, Jonathan Pleim, Rohit Mathur,"

Similar presentations

Office of Research and Development National Exposure Research Laboratory, Atmospheric Modeling and Analysis Division Changes in U.S. Regional-Scale Air.

Office of Research and Development National Exposure Research Laboratory, Atmospheric Modeling and Analysis Division Changes in U.S. Regional-Scale Air.
Comparison of the CAM and RRTMG Radiation Schemes in WRF and coupled WRF-CMAQ models Aijun Xiu, Zac Adelman, Frank Binkowski, Adel Hanna, Limei Ran Center.

Comparison of the CAM and RRTMG Radiation Schemes in WRF and coupled WRF-CMAQ models Aijun Xiu, Zac Adelman, Frank Binkowski, Adel Hanna, Limei Ran Center.
CO budget and variability over the U.S. using the WRF-Chem regional model Anne Boynard, Gabriele Pfister, David Edwards National Center for Atmospheric.

CO budget and variability over the U.S. using the WRF-Chem regional model Anne Boynard, Gabriele Pfister, David Edwards National Center for Atmospheric.
Office of Research and Development Atmospheric Modeling and Analysis Division, National Exposure Research Laboratory Overview of the Two-way Coupled WRF-CMAQ.

Office of Research and Development Atmospheric Modeling and Analysis Division, National Exposure Research Laboratory Overview of the Two-way Coupled WRF-CMAQ.
Geophysical Fluid Dynamics Laboratory Review June 30 - July 2, 2009 Geophysical Fluid Dynamics Laboratory Review June 30 - July 2, 2009.

Geophysical Fluid Dynamics Laboratory Review June 30 - July 2, 2009 Geophysical Fluid Dynamics Laboratory Review June 30 - July 2, 2009.
Modeled Trends in Impacts of Landing and Takeoff Aircraft Emissions on Surface Air-Quality in U.S for 2005, 2010 and 2018 Lakshmi Pradeepa Vennam 1, Saravanan.

Modeled Trends in Impacts of Landing and Takeoff Aircraft Emissions on Surface Air-Quality in U.S for 2005, 2010 and 2018 Lakshmi Pradeepa Vennam 1, Saravanan.
Dynamical Downscaling of CCSM Using WRF Yang Gao 1, Joshua S. Fu 1, Yun-Fat Lam 1, John Drake 1, Kate Evans 2 1 University of Tennessee, USA 2 Oak Ridge.

Dynamical Downscaling of CCSM Using WRF Yang Gao 1, Joshua S. Fu 1, Yun-Fat Lam 1, John Drake 1, Kate Evans 2 1 University of Tennessee, USA 2 Oak Ridge.
Office of Research and Development Atmospheric Modeling and Analysis Division, National Exposure Research Laboratory Use of Remote Sensing Information.

Office of Research and Development Atmospheric Modeling and Analysis Division, National Exposure Research Laboratory Use of Remote Sensing Information.
Title EMEP Unified model Importance of observations for model evaluation Svetlana Tsyro MSC-W / EMEP TFMM workshop, Lillestrøm, 19 October 2010.

Title EMEP Unified model Importance of observations for model evaluation Svetlana Tsyro MSC-W / EMEP TFMM workshop, Lillestrøm, 19 October 2010.
Integrating satellite observations for assessing air quality over North America with GEOS-Chem Mark Parrington, Dylan Jones University of Toronto

Integrating satellite observations for assessing air quality over North America with GEOS-Chem Mark Parrington, Dylan Jones University of Toronto
Global Simulation of SO 2 Concentrations with Updated Emission Inventory Gan Luo, Fangqun Yu, Zifa Wang Atmospheric Science Research Center, SUNY- Albany.

Global Simulation of SO 2 Concentrations with Updated Emission Inventory Gan Luo, Fangqun Yu, Zifa Wang Atmospheric Science Research Center, SUNY- Albany.
Effects of Siberian forest fires on regional air quality and meteorology in May 2003 Rokjin J. Park with Daeok Youn, Jaein Jeong, Byung-Kwon Moon Seoul.

Effects of Siberian forest fires on regional air quality and meteorology in May 2003 Rokjin J. Park with Daeok Youn, Jaein Jeong, Byung-Kwon Moon Seoul.
The impact of the thermal power industries from the Beijing- Tianjin-Hebei regions on Beijing haze studied by the two-way coupled WRF-CMAQ model (Preliminary.

The impact of the thermal power industries from the Beijing- Tianjin-Hebei regions on Beijing haze studied by the two-way coupled WRF-CMAQ model (Preliminary.
University of North Carolina at Chapel Hill Carolina Environmental Programs Emissions and meteorological Aspects of the 2001 ICAP Simulation Adel Hanna,

University of North Carolina at Chapel Hill Carolina Environmental Programs Emissions and meteorological Aspects of the 2001 ICAP Simulation Adel Hanna,
CMAQ (Community Multiscale Air Quality) pollutant Concentration change horizontal advection vertical advection horizontal dispersion vertical diffusion.

CMAQ (Community Multiscale Air Quality) pollutant Concentration change horizontal advection vertical advection horizontal dispersion vertical diffusion.
Template CAMx Ancillary Input Development Chris Emery ENVIRON International Corporation, Novato CA November 14, 2012.

Template CAMx Ancillary Input Development Chris Emery ENVIRON International Corporation, Novato CA November 14, 2012.
A Modeling Investigation of the Climate Effects of Air Pollutants Aijun Xiu 1, Rohit Mathur 2, Adel Hanna 1, Uma Shankar 1, Frank Binkowski 1, Carlie Coats.

A Modeling Investigation of the Climate Effects of Air Pollutants Aijun Xiu 1, Rohit Mathur 2, Adel Hanna 1, Uma Shankar 1, Frank Binkowski 1, Carlie Coats.
Examination of the impact of recent laboratory evidence of photoexcited NO 2 chemistry on simulated summer-time regional air quality Golam Sarwar, Robert.

Examination of the impact of recent laboratory evidence of photoexcited NO 2 chemistry on simulated summer-time regional air quality Golam Sarwar, Robert.
National/Regional Air Quality Modeling Assessment Over China and Taiwan Using Models-3/CMAQ Modeling System Joshua S. Fu 1, Carey Jang 2, David Streets.

National/Regional Air Quality Modeling Assessment Over China and Taiwan Using Models-3/CMAQ Modeling System Joshua S. Fu 1, Carey Jang 2, David Streets.
Impact of Emissions on Intercontinental Long-Range Transport Joshua Fu, Yun-Fat Lam and Yang Gao, University of Tennessee, USA Rokjin Park, Seoul National.

Impact of Emissions on Intercontinental Long-Range Transport Joshua Fu, Yun-Fat Lam and Yang Gao, University of Tennessee, USA Rokjin Park, Seoul National.

Similar presentations

Ads by Google