Assessment of black carbon in the Arctic: new emission inventory of Russia, model evaluation and implications Kan Huang 1, Joshua S. Fu 1,2, Xinyi Dong.

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Assessment of black carbon in the Arctic: new emission inventory of Russia, model evaluation and implications Kan Huang 1, Joshua S. Fu 1,2, Xinyi Dong 1 1 Department of Civil and Environmental Engineering, The University of Tennessee, Knoxville, Tennessee, USA 2 UTK-ORNL Center for Interdisciplinary Research and Graduate Education, Energy Science and Engineering, Knoxville, Tennessee, USA 2013 CMAS Meeting October 29, 2013

Motivations Arctic black carbon simulation problems:  Large diversity of modeling BC from different models (Shindell et al., 2008)  Strong underestimation of BC in Arctic (Shindell et al., 2008; Koch et al., 2009)  Improper wet scavenging parameterizations (Bourgeois et al., 2011) Shindell et al., 2008 Canada NEI US NEI EMEP

Motivations On December 17, 2009, in Copenhagen, the US Government committed to international cooperation to reduce black carbon (BC) emissions in and around the Arctic. Arctic Black Carbon (BC) Initiative: A project funded by U.S. DOE  Activity #1: Arctic BC Identification: Receptor modeling: Potential Source Contribution Function (PSCF) (ORNL)  Activity #2: Establish BC Emissions Inventory of Russia (base year : 2010): Improve estimates of BC emissions in Russia and verification by model simulation (UTK) Tasks: BC emissions from gas flaring, transportation, residential, power plants and Industries  Activity #3: Demonstration of BC Emissions Reduction Technologies: Demonstrate the best-available emissions reduction technologies for a subset of the identified sources in Russia. (ORNL)

I. Gas flaring: a missing BC source (Dmitry Volkov, 2008) Russia possess the largest natural gas reserves of 24% in the world as of Also, the top 1 gas flaring country (Elvidge et al., 2009) Annual gas flare volume in the global scale and in Russia

Estimation of gas flaring EF and emission in Russia No field measurement available Only laboratory test (McEwen and Johnson, 2012) BC flaring = Volume * Soot EF Volume : Gas flaring volume of Russia in 2010 was 35.6 BCM (billion cubic meters) The BC emission from Russia’s gas flaring in 2010 is estimated to be 57.6 Gg. Composition of the associated gas in Russia MJ/m 3 45 MJ/m g/m 3

Spatial distribution of gas flaring BC emission Gas flare areas (red polygon) retrieved from satellite (U.S. Air Force Defense Meteorological Satellite Program (DMSP) Operational Linescan System (OLS)) Spatial allocation proxy (contour) nighttime lights product Data source: NOAA NGDC Major gas flaring regions: Yamal-Nenets Khanty-Mansiysk Major gas flaring regions: Yamal-Nenets Khanty-Mansiysk Major gas flaring regions: Yamal-Nenets Khanty-Mansiysk Major gas flaring regions: Yamal-Nenets Khanty-Mansiysk Major gas flaring regions: Yamal-Nenets Khanty-Mansiysk Spatial distribution of gas flaring BC emission (0.1*0.1 degree)

II. Transportation BC emission Share of different Euro vehicles Cars Public bus Private bus < 3.5t t t > 16t Trucks

II. Transportation BC emission PM emission factors (g/km) of various vehicle types dependent on different Euro standards (Euro 0 – Euro 3) and driving conditions (urban, intercity and highways) Ministry of Transport of the Russian Federation Research Institute, 2008

II. Transportation BC emission Ministry of Transport of the Russian Federation Research Institute, 2008 Soot emission factors (g/min) during warm-up (cold start)

III. Residential BC emission Residential BC emissions in Russia are based on fuel consumption data and EFs. National BC -> Federal District level based on residential firewood consumption from Russia’s FSSS (Federal State Statistics Service) District BC -> grid cell population density within each district (ORNL’s LandScan dataset) Total = 57.0 Gg

IV. Power plants & V. Industrial BC emission National BC -> Provincial level based on provincial industrial revenues from Russia’s FSSS (Federal State Statistics Service) Provincial BC -> grid cell population density within each district (ORNL’s LandScan dataset) BC emissions from power plants and industries in Russia are based on PM (particulate matter) data from Russian official figures and scaling factors (BC/PM 2.5 ratio) from the U.S. EPA SPECIATE database. National BC -> grid level CARMA (Carbon Monitoring for Action): power plant location, energy capacity and CO 2 emission. Total = 12.1 Gg Total = 12.3 Gg

Sectoral contributions to Russian anthropogenic BC emissions Wang et al., 2011 BC emission prepared for ARCTAS 111 Gg comparison

Birkenes Pallas Zeppelin Tiksi BarrowAlert Surface BC (or absorption coefficient) observation sites in the Arctic

GEOS-Chem Simulation vs. Observations 40% 25% 40% 100%

Impact from increased BC emission Surface BC from the difference between simulation with new emission and the base case Spring Summer Autumn Winter The impact of the new emission on the increased surface BC concentration could reach over 2 μg/m 3 in Russia and over 20 ng/m 3 over the Arctic Circle.