Xuan Wang and Colette L. Heald 7th International GEOS-Chem User’s Meeting, May 5, 2015 This work is funded by U.S. EPA Simulating Brown Carbon and its.

Slides:



Advertisements
Similar presentations
Satellite Observations of Enhanced Pre- Monsoon Aerosol Loading and Tropospheric Warming over the Gangetic-Himalayan Region Ritesh Gautam 1, N. Christina.
Advertisements

Wavelength Dependence of Aerosol Light Absorption in Urban and Biomass Burning Impacted Conditions: An Integrative Perspective. Paper A11E-02. W. Patrick.
GEOS-5 Simulations of Aerosol Index and Aerosol Absorption Optical Depth with Comparison to OMI retrievals. V. Buchard, A. da Silva, P. Colarco, R. Spurr.
A Dictionary of Aerosol Remote Sensing Terms Richard Kleidman SSAI/NASA Goddard Lorraine Remer UMBC / JCET Short.
Aerosol Lifetimes at High Latitudes Betty Croft 1, Jeff Pierce 1,2 and Randall Martin 1,3 1 Dalhousie University, Halifax, Canada 2 Colorado State University,
FIRE AND BIOFUEL CONTRIBUTIONS TO ANNUAL MEAN AEROSOL MASS CONCENTRATIONS IN THE UNITED STATES ROKJIN J. PARK, DANIEL J. JACOB, JENNIFER A. LOGAN AGU FALL.
Aerosol radiative effects from satellites Gareth Thomas Nicky Chalmers, Caroline Poulsen, Ellie Highwood, Don Grainger Gareth Thomas - NCEO/CEOI-ST Joint.
Quantitative Interpretation of Satellite and Surface Measurements of Aerosols over North America Aaron van Donkelaar M.Sc. Defense December, 2005.
Organic Carbon Aerosol: An Overview (and Insight from Recent Field Campaigns) Colette L. Heald NOAA Climate and Global Change Postdoctoral Fellow
Atmospheric C 2 H 2 and its relationship with CO as an indicator of air mass aging Xiao et al. [2007a] Fossil fuelauto BiofuelBiomass burning atmosphere.
Constraining aerosol sources using MODIS backscattered radiances Easan Drury - G2
Transpacific transport of pollution as seen from space Funding: NASA, EPA, EPRI Daniel J. Jacob, Rokjin J. Park, Becky Alexander, T. Duncan Fairlie, Arlene.
Investigating the Sources of Organic Carbon Aerosol in the Atmosphere Colette L. Heald NOAA Climate and Global Change Postdoctoral Fellow University of.
Second ICAP Workshop Aerosol Modeling using the GISS modelE Sophia Zhang, Dorothy Koch, Susanna Bauer, Reha Cakmur, Ron Miller, Jan Perlwitz Nadine Bell.
Radiative Effects of Atmospheric Aerosols and Regional Haze Jin Xu DAS Science Talk February 17, 2004.
Using satellite observations to investigate natural aerosol loading Colette L. Heald David A. Ridley, Kateryna Lapina EGU April 5, 2011.
Satellite-based Global Estimate of Ground-level Fine Particulate Matter Concentrations Aaron van Donkelaar1, Randall Martin1,2, Lok Lamsal1, Chulkyu Lee1.
Aerosol Simulation Over North America Aaron Van Donkelaar April 2005.
What satellite and aircraft observations can tell us about the organic aerosol budget Colette L. Heald 5 th International GEOS-Chem Meeting May 2, 2011.
Colette Heald Fangqun Yu Aerosol Processes Working Group.
Trans-Pacific transport of Asian dust and pollution: Accumulation of biomass burning CO in subtropics and dipole structure of transport Junsang Nam 1,
Aerosols and climate Rob Wood, Atmospheric Sciences.
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.
Brown carbon in the continental troposphere: sources, evolution and radiative impacts Evolution of Brown Carbon in Wildfire Plumes -Submitted to GRL- Rodney.
Black Carbon:Global Budget and Impacts on Climate.
Direct Radiative Effect of aerosols over clouds and clear skies determined using CALIPSO and the A-Train Robert Wood with Duli Chand, Tad Anderson, Bob.
NATURAL AND TRANSBOUNDARY INFLUENCES ON PARTICULATE MATTER IN THE UNITED STATES: IMPLICATIONS FOR THE EPA REGIONAL HAZE RULE Rokjin J. Park ACCESS VII,
Organic aerosol and its climate impact Min Zhong and Myoseon Jang Sept. 24, 2013 Department of Environmental Engineering Sciences University of Florida.
AERONET in the context of aerosol remote sensing from space and aerosol global modeling Stefan Kinne MPI-Meteorology, Hamburg Germany.

Mixing State of Aerosols: Excess Atmospheric Absorption Paradox Shekhar Chandra Graduate Student, EAS Term Paper Presentation for EAS-6410.
(Impacts are Felt on Scales from Local to Global) Aerosols Link Climate, Air Quality, and Health: Dirtier Air and a Dimmer Sun Emissions Impacts == 
Characterization of Aerosol Physical, Optical and Chemical Properties During the Big Bend Regional Aerosol and Visibility Observational Study (BRAVO) Jenny.
FROM AIR POLLUTION TO GLOBAL CHANGE AND BACK: Towards an integrated international policy for air pollution and climate change Daniel J. Jacob Harvard University.
Improving Black Carbon (BC) Aging in GEOS-Chem Based on Aerosol Microphysics: Constraints from HIPPO Observations Cenlin He Advisers: Qinbin Li, Kuo-Nan.
Using MODIS fire count data as an interim solution for estimating biomass burning emission of aerosols and trace gases Mian Chin, Tom Kucsera, Louis Giglio,
TOP-DOWN CONSTRAINTS ON REGIONAL CARBON FLUXES USING CO 2 :CO CORRELATIONS FROM AIRCRAFT DATA P. Suntharalingam, D. J. Jacob, Q. Li, P. Palmer, J. A. Logan,
In Situ and Remote Sensing Characterization of Spectral Absorption by Black Carbon and other Aerosols J. Vanderlei Martins, Paulo Artaxo, Yoram Kaufman,
Aerosol Optical Depth during the Northern CA Fires of 2008 In situ aerosol light scattering and absorption measurements in Reno Nevada, 2008, indicated.
Modelling the radiative impact of aerosols from biomass burning during SAFARI-2000 Gunnar Myhre 1,2 Terje K. Berntsen 3,1 James M. Haywood 4 Jostein K.
NATURAL AND TRANSBOUNDARY POLLUTION INFLUENCES ON AEROSOL CONCENTRATIONS AND VISIBILITY DEGRADATION IN THE UNITED STATES Rokjin J. Park, Daniel J. Jacob,
Synergy of MODIS Deep Blue and Operational Aerosol Products with MISR and SeaWiFS N. Christina Hsu and S.-C. Tsay, M. D. King, M.-J. Jeong NASA Goddard.
ESTIMATION OF SOLAR RADIATIVE IMPACT DUE TO BIOMASS BURNING OVER THE AFRICAN CONTINENT Y. Govaerts (1), G. Myhre (2), J. M. Haywood (3), T. K. Berntsen.
Rong-Ming Hu and Randall Martin Inspiring Minds. Retrieval of Aerosol Single Scattering Albedo (SSA)  Determined with radiative transfer calculation.
Simulating the Oxygen Content of Organic Aerosol in a Global Model
Transpacific transport of anthropogenic aerosols: Integrating ground and satellite observations with models AAAR, Austin, Texas October 18, 2005 Colette.
Global budget and radiative forcing of black carbon aerosol: constraints from pole-to-pole (HIPPO) observations across the Pacific Qiaoqiao Wang, Daniel.
Observational Constraints on Aerosol Deposition and Optical Depth Mark Flanner 1 Phil Rasch 1 Jim Randerson 2 Joe McConnell 3 Tami Bond 4 1 NCAR 2 University.
Estimating PM 2.5 from MODIS and MISR AOD Aaron van Donkelaar and Randall Martin March 2009.
BAYESIAN AND ADJOINT INVERSE MODEL ANALYSES OF PM SOURCES IN THE UNITED STATES USING OBSERVATIONS FROM SURFACE, AIRCRAFT, AND SATELLITE PLATFORMS Daniel.
Radiative forcing due to BC on snow and the direct aerosol effect of BC in the Arctic Gunnar Myhre CICERO – Center for International Climate and Environmental.
Tom Breider, Loretta Mickley, Daniel Jacob, Cui Ge, Jun Wang, Melissa Payer, Betty Croft, David Ridley, Sangeeta Sharma, Kostas Eleftheriadis, Joe McConnell,
An Observationally-Constrained Global Dust Aerosol Optical Depth (AOD) DAVID A. RIDLEY 1, COLETTE L. HEALD 1, JASPER F. KOK 2, CHUN ZHAO 3 1. CIVIL AND.
Review: Constraining global isoprene emissions with GOME formaldehyde column measurements Shim et al. Luz Teresa Padró Wei-Chun Hsieh Zhijun Zhao.
Organic aerosol composition and aging in the atmosphere: How to fit laboratory experiments, field data, and modeling together American Chemical Society.
Land Use Change Impacts on Aerosols International Aerosol Modeling Algorithms Meeting December 10, 2015 Colette L. Heald Jeff Geddes, Sam Silva, Ashley.
Observational Constraints on Global Organic Aerosol Telluride Science Research Center Workshop on Organic Aerosol July 30, 2014 Colette L. Heald Xuan Wang,
Estimation of the contribution of mineral dust to the total aerosol depth: Particular focus on Atlantic Ocean G. Myhre, A. Grini, T.K. Berntsen, T.F. Berglen,
Transpacific transport of anthropogenic aerosols and implications for North American air quality EGU, Vienna April 27, 2005 Colette Heald, Daniel Jacob,
Measurements of light absorption spectra of fine particle aqueous extracts during CalNex at the Pasadena ground site X. Zhang and R. J. Weber Georgia Institute.
Effect of the Variability of the Radiative Properties of Light Absorbing Particles (LAC) on the Aerosol Direct Forcing in the ACE Asia Region R.W. Bergstrom.
BACKGROUND AEROSOL IN THE UNITED STATES: NATURAL SOURCES AND TRANSBOUNDARY POLLUTION Daniel J. Jacob and Rokjin J. Park with support from EPRI, EPA/OAQPS.
Global Simulation of Secondary Organic Carbon Aerosols Hong Liao California Institute of Technology GEOS-CHEM meeting, April 2005.
What Are the Implications of Optical Closure Using Measurements from the Two Column Aerosol Project? J.D. Fast 1, L.K. Berg 1, E. Kassianov 1, D. Chand.
Using in situ data to better understand Chinese air pollution events
Fourth TEMPO Science Team Meeting
Modeling team: Mian Chin, Huisheng Bian, Tom Kucsera NASA GSFC
AM and ChemClim WG - February, 2008
Modelling the radiative impact of aerosols from biomass burning during SAFARI-2000   Gunnar Myhre, Terje K. Berntsen, James M. Haywood, Jostein K. Sundet,
AEROSOLS REDUCE ATMOSPHERIC OXIDATION
Presentation transcript:

Xuan Wang and Colette L. Heald 7th International GEOS-Chem User’s Meeting, May 5, 2015 This work is funded by U.S. EPA Simulating Brown Carbon and its Direct Radiative Forcing: From “Bottom-up” to “Top-down”

Brown Carbon: The Absorbing Organics Recent studies show some organic aerosols can absorb light (so-called ”brown carbon”: BrC) (Arola et al., 2011; Hecobian et al., 2010; Chakrabarty et al., 2010 etc.) Usually found in biomass burning and biofuel emissions. Most absorbing at UV wavelengths, leading to a high absorption angstrom exponent (AAE). BrC contributes to global warming but its effect has not been well estimated. Visible Spectrum UVIR BC absorption BrC absorption

Estimating BrC: Building a Bottom-up Simulation Optical Properties Aerosol Mass

Estimating BrC: Building a Bottom-up Simulation Optical Properties Aerosol Mass Measured Imaginary part of refractive Index in biomass burning/biofuel sources

Estimating BrC: Building a Bottom-up Simulation Assume 50% of biofuel/biomass burning POA to be primary BrC Assume aromatic SOA to be secondary BrC (Wang et al., 2014) Assumption for GEOS-Chem Optical Properties Aerosol Mass Mass Absorption Coefficient = 1 m 2 /g at 440nm for primary BrC 0.3 m 2 /g at 440nm for secondary BrC Assumption for GEOS-Chem

Building a Bottom-up Simulation The global mean absorbing DRF of BrC is estimated to be Wm -2 Other model studies of BrC are also built on simple assumptions or single experiments (Feng et al., 2013; Lin et al., 2014; Lu et al., 2015.) Simulated Annual Average Direct Radiative Effect (DRE) of BrC (Wang et al., 2014)

Deriving BrC Absorption from Measurements Wavelength

Is the AAE = 1 Assumption Reasonable? Mie Calculation BC (core) diameter, nm AAE Refractive Index (BC) = i (Bond and Bergstrom, 2006; Bond et al., 2014)

2014 AERONET AAOD BC + BrC BC only (range defined by Mie calculations) Developing a New Method to Derive BrC

2014 AERONET AAOD BC + BrC BC only (range defined by Mie calculations) Developing a New Method to Derive BrC

Derived BrC: A Top-down Constraint on Regional Sources Relationship between derived BrC AAOD at 440nm and observed AAOD at 675nm from AERONET 2 years monthly data ( ) R 2 = 0.75 Slope = 0.50

Select data in North America only, and dominated by biofuel emissions R 2 = 0.91 Slope = 0.30 R 2 = 0.75 Slope = 0.50 Derived BrC: A Top-down Constraint on Regional Sources

R 2 = 0.86 Slope = 0.54 R 2 = 0.75 Slope = 0.50 Select data in East Asia only, and dominated by biofuel emissions Derived BrC: A Top-down Constraint on Regional Sources

R 2 = 0.84 Slope = 0.55 R 2 = 0.75 Slope = 0.50 Select data in Europe only, and dominated by biofuel emissions Derived BrC: A Top-down Constraint on Regional Sources

R 2 = 0.91 Slope = 0.42 R 2 = 0.75 Slope = 0.50 Select data in dominated by biomass burning emissions globally Derived BrC: A Top-down Constraint on Regional Sources

Summary and Future Work The global mean BrC absorption that we derive from AERONET is ~30% lower than the bottom-up simulation. We could use the regional source relationships shown above to constrain model simulations of BrC.

Summary and Future Work The global mean BrC absorption that we derive from AERONET is ~30% lower than the bottom-up simulation. We could use the regional source relationships shown above to constrain model simulations of BrC. Our AERONET estimate for BrC absorption is only for one wavelength (440 nm), we need additional information on the wavelength dependence of BrC absorption (the AAE) to estimate the global radiative impacts of BrC.

Summary and Future Work Surface observation in GOAMAZON campaign ( The global mean BrC absorption that we derive from AERONET is ~30% lower than the bottom-up simulation. We could use the regional source relationships shown above to constrain model simulations of BrC. Our AERONET estimate for BrC absorption is only for one wavelength (440 nm), we need additional information on the wavelength dependence of BrC absorption (the AAE) to estimate the global radiative impacts of BrC. BrC AAE for 370/430nm Days in 2014 BC AAE for 430/880nm

Derived BrC-AAOD at 440nm in 2012 MAMDJF SONJJA Selected AERONET sites with significant BrC influence Sites affected largely by dust have been removed