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Evangeliou N, Tichý O, Eckhardt S, Zwaaftink CG, Brahney J. Sources and fate of atmospheric microplastics revealed from inverse and dispersion modelling: From global emissions to deposition. JOURNAL OF HAZARDOUS MATERIALS 2022; 432:128585. [PMID: 35299104 DOI: 10.1016/j.jhazmat.2022.128585] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 02/23/2022] [Accepted: 02/24/2022] [Indexed: 06/14/2023]
Abstract
We combine observations from Western USA and inverse modelling to constrain global atmospheric emissions of microplastics (MPs) and microfibers (MFs). The latter are used further to model their global atmospheric dynamics. Global annual MP emissions were calculated as 9.6 ± 3.6 Tg and MF emissions as 6.5 ± 2.9 Tg. Global average monthly MP concentrations were 47 ng m-3 and 33 ng m-3 for MFs, at maximum. The largest deposition of agricultural MPs occurred close to the world's largest agricultural regions. Road MPs mostly deposited in the East Coast of USA, Central Europe, and Southeastern Asia; MPs resuspended with mineral dust near Sahara and Middle East. Only 1.8% of the emitted mass of oceanic MPs was transferred to land, and 1.4% of land MPs to ocean; the rest were deposited in the same environment. Previous studies reported that 0.74-1.9 Tg y-1 of land-based atmospheric MPs/MFs (< 5 mm) are transported to the ocean, while riverine transport is between 3.3 and 14 Tg y-1. We calculate that 0.418 ± 0.201 Tg y-1 MPs/MFs (size up to 250 and 2500 µm) were transported from the land to ocean (large particles were ignored). Model validation against observations showed that particle removal must be urgently updated in global models.
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Affiliation(s)
- Nikolaos Evangeliou
- Norwegian Institute for Air Research (NILU), Instituttveien 18, 2007 Kjeller, Norway.
| | - Ondřej Tichý
- The Czech Academy of Sciences, Institute of Information Theory and Automation, Prague, Czech Republic
| | - Sabine Eckhardt
- Norwegian Institute for Air Research (NILU), Instituttveien 18, 2007 Kjeller, Norway
| | | | - Janice Brahney
- Department of Watershed Sciences and Ecology Center, Utah State University, Logan, UT 84322, USA
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Zhou Y, West CP, Hettiyadura APS, Pu W, Shi T, Niu X, Wen H, Cui J, Wang X, Laskin A. Molecular Characterization of Water-Soluble Brown Carbon Chromophores in Snowpack from Northern Xinjiang, China. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:4173-4186. [PMID: 35287433 DOI: 10.1021/acs.est.1c07972] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
This study reports molecular-level characterization of brown carbon (BrC) attributed to water-soluble organic carbon in six snowpack samples collected from northern Xinjiang, China. The molecular composition and light-absorbing properties of BrC chromophores were unraveled by application of high-performance liquid chromatography (HPLC) coupled to a photodiode array (PDA) detector and high-resolution mass spectrometry. The chromophores were classified into five major types, that is, (1) phenolic/lignin-derivedcompounds, (2) flavonoids, (3) nitroaromatics, (4) oxygenated aromatics, and (5) other chromophores. Identified chromophores account for ∼23-64% of the total light absorption measured by the PDA detector in the wavelength range of 300-370 nm. In the representative samples from urban and remote areas, oxygenated aromatics and nitroaromatics dominate the absorption in the wavelengths below and above 320 nm, respectively. The highly polluted urban sample shows the most complex HPLC-PDA chromatogram, and more other chromophores contribute to the bulk absorption. Phenolic/lignin-derived compounds are the most light-absorbing species in the soil-influenced sample. Chromophores in two remote samples exhibit ultraviolet-visible features distinct from other samples, which are attributed to flavonoids. Identification of individual chromophores and quantitative analysis of their optical properties are helpful for elucidating the roles of BrC in snow radiative balance and photochemistry.
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Affiliation(s)
- Yue Zhou
- Key Laboratory for Semi-Arid Climate Change of the Ministry of Education, College of Atmospheric Sciences, Lanzhou University, Lanzhou 730000, China
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Christopher P West
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Anusha P S Hettiyadura
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Wei Pu
- Key Laboratory for Semi-Arid Climate Change of the Ministry of Education, College of Atmospheric Sciences, Lanzhou University, Lanzhou 730000, China
| | - Tenglong Shi
- Key Laboratory for Semi-Arid Climate Change of the Ministry of Education, College of Atmospheric Sciences, Lanzhou University, Lanzhou 730000, China
| | - Xiaoying Niu
- Key Laboratory for Semi-Arid Climate Change of the Ministry of Education, College of Atmospheric Sciences, Lanzhou University, Lanzhou 730000, China
| | - Hui Wen
- Key Laboratory for Semi-Arid Climate Change of the Ministry of Education, College of Atmospheric Sciences, Lanzhou University, Lanzhou 730000, China
| | - Jiecan Cui
- Key Laboratory for Semi-Arid Climate Change of the Ministry of Education, College of Atmospheric Sciences, Lanzhou University, Lanzhou 730000, China
| | - Xin Wang
- Key Laboratory for Semi-Arid Climate Change of the Ministry of Education, College of Atmospheric Sciences, Lanzhou University, Lanzhou 730000, China
- Institute of Surface-Earth System Science, Tianjin University, Tianjin 300072, China
| | - Alexander Laskin
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
- Department of Earth, Atmospheric, and Planetary Sciences, Purdue University, West Lafayette, Indiana 47907, United States
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Black Carbon as a Source of Trace Elements and Nutrients in Ice Sheet of King George Island, Antarctica. GEOSCIENCES 2020. [DOI: 10.3390/geosciences10110465] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Enormous deglaciation in the polar and mountainous regions of the Earth is associated not only with large-scale climatic changes but also with the global transfer of black carbon (BC) microparticles, which accumulate on the surface of glaciers and lead to changes in albedo and the rate of degradation of ice. BC is the product of an incomplete combustion of fossil fuels, volcanic eruptions, and wildfires. The accumulation of organogenic microparticles leads to the formation of cryoconites, which are dust made of a combination of small rock particles and the result of anthropogenic activities (fossil fuel combustion) that play a special role in deglaciation. Here, we describe the content of trace metals and nutrients in accumulation of the BC from glaciers of Fildes Peninsula, King George Island, Western Antarctica. The analysis of trace metals concentrations showed that most of the studied elements (Cr, Pb, Zn, Ni) have a volcanic origin; at the same time, Cd and Cu have been accumulated as a result of anthropogenic activity. The content of nutrients in BC are most similar with Technosols, which forms near the scientific station at King George Island. The particles of BC can be translocated into organisms, which could pose a significant risk for living organisms and humans.
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Qi L, Wang S. Sources of black carbon in the atmosphere and in snow in the Arctic. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 691:442-454. [PMID: 31323589 DOI: 10.1016/j.scitotenv.2019.07.073] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Revised: 07/04/2019] [Accepted: 07/05/2019] [Indexed: 06/10/2023]
Abstract
We systematically identify sources of black carbon (BC) in the Arctic, including BC in the troposphere, at surface and in snow, using tagged tracer technique implemented in a 3D global chemical transport model GEOS-Chem. We validate modeled BC sources (fossil fuel combustion versus biomass burning) against carbon isotope measurements at Barrow (Alaska), Zeppelin (Norway), Abisko (Sweden), Alert (Canada) and Tiksi (Russia) in the Arctic. The model reproduces the observed annual mean fraction of biomass burning (fbb, %) at the five sites within 20% and the observed and modeled monthly fbb values agree within a factor of two. Model results suggest that fossil fuel combustion is the major source of BC in the troposphere (50-94%, vary with sub-regions), at surface (55-68%) and in snow (58-69%) in the Arctic as annual mean, but biomass burning dominates at certain altitudes (600-800 hPa) and during periods of time between April to September. The model shows that BC in the troposphere, in deposition and in snow in different Arctic sub-regions have distinctively different sources and source regions. We find that long-range transport of Asian emissions has a stronger influence on BC in the atmosphere than on BC deposition. In contrast, contributions from Russian and European emissions are larger for BC deposition than for BC in the atmosphere. Specifically, Asian fossil fuel combustion emissions dominate BC loading in all Arctic sub-regions in both winter (Oct.-Mar., 35-54%) and summer (Apr.-Sep., 34-56%). For BC deposition, Siberian fossil fuel emissions are the largest contributors in Russia both in winter (62%) and summer (44%), and European fossil fuel emissions dominate in Ny-Ålesund (44% in winter) and Tromsø (71% in winter and 46% in summer). For BC deposition in the North American sector, Asian fossil fuel emissions are the largest contributors in winter (25-38%) and North American biomass burning emissions (38-72%) dominate in summer.
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Affiliation(s)
- Ling Qi
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China; State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex, Beijing 100084, China
| | - Shuxiao Wang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China; State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex, Beijing 100084, China.
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Barbaro E, Spolaor A, Karroca O, Park KT, Martma T, Isaksson E, Kohler J, Gallet JC, Bjorkman MP, Cappelletti D, Spreen G, Zangrando R, Barbante C, Gambaro A. Free amino acids in the Arctic snow and ice core samples: Potential markers for paleoclimatic studies. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 607-608:454-462. [PMID: 28711841 DOI: 10.1016/j.scitotenv.2017.07.041] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Revised: 07/04/2017] [Accepted: 07/04/2017] [Indexed: 06/07/2023]
Abstract
The role of oceanic primary production on climate variability has long been debated. Defining changes in past oceanic primary production can help understanding of the important role that marine algae have in climate variability. In ice core research methanesulfonic acid is the chemical marker commonly used for assessing changes in past primary production. However, other organic compounds such as amino acids, can be produced and emitted into the atmosphere during a phytoplankton bloom. These species can be transported and deposited onto the ice cap in polar regions. Here we investigate the correlation between the concentration of chlorophyll-a, marker of marine primary production, and amino acids present in an ice core. For the first time, free l- and d-amino acids in Arctic snow and firn samples were determined by a sensitive and selective analytical method based on liquid chromatography coupled with tandem mass spectrometry. The new method for the determination of free amino acids concentrations was applied to firn core samples collected on April 2015 from the summit of the Holtedahlfonna glacier, Svalbard (N 79'08.424, E 13'23.639, 1120m a.s.l.). The main results of this work are summarized as follows: (1) glycine, alanine and proline, were detected and quantified in the firn core samples; (2) their concentration profiles, compared with that of the stable isotope δ18O ratio, show a seasonal cycling with the highest concentrations during the spring and summer time; (3) back-trajectories and Greenland Sea chlorophyll-a concentrations obtained by satellite measurements were compared with the amino acids profile obtained from ice core samples, this provided further insights into the present results. This study suggests that the amino acid concentrations in the ice samples collected from the Holtedahlfonna glaciers could reflect changes in oceanic phytoplankton abundance.
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Affiliation(s)
- Elena Barbaro
- Department of Environmental Sciences, Informatics and Statistics, Ca' Foscari University of Venice, Via Torino 155, 30172 Venice-Mestre, Italy.
| | - Andrea Spolaor
- Institute for the Dynamics of Environmental Processes CNR, Via Torino 155, 30172 Venice-Mestre, Italy
| | - Ornela Karroca
- Department of Environmental Sciences, Informatics and Statistics, Ca' Foscari University of Venice, Via Torino 155, 30172 Venice-Mestre, Italy
| | - Ki-Tae Park
- Korea Polar Research Institute, 26 Songdomirae-ro, Yeonsu-gu, Incheon 406-840, Republic of Korea
| | - Tõnu Martma
- Department of Geology, Tallinn University of Technology, Ehitajate tee 5, 19086 Tallinn, Estonia
| | | | - Jack Kohler
- Norwegian Polar Institute, Tromsø NO-9296, Norway
| | | | - Mats P Bjorkman
- University of Gothenburg, Department of Earth Sciences, Box 60, 40530 Göteborg, Sweden
| | - David Cappelletti
- Dipartimento di Chimica, Biologia e Biotecnologie, Università degli Studi di Perugia, 06123 Perugia, Italy
| | - Gunnar Spreen
- University of Bremen, Institute of Environmental Physics, Otto-Hahn-Allee 1, 28359 Bremen, Germany
| | - Roberta Zangrando
- Institute for the Dynamics of Environmental Processes CNR, Via Torino 155, 30172 Venice-Mestre, Italy
| | - Carlo Barbante
- Department of Environmental Sciences, Informatics and Statistics, Ca' Foscari University of Venice, Via Torino 155, 30172 Venice-Mestre, Italy; Institute for the Dynamics of Environmental Processes CNR, Via Torino 155, 30172 Venice-Mestre, Italy
| | - Andrea Gambaro
- Department of Environmental Sciences, Informatics and Statistics, Ca' Foscari University of Venice, Via Torino 155, 30172 Venice-Mestre, Italy; Institute for the Dynamics of Environmental Processes CNR, Via Torino 155, 30172 Venice-Mestre, Italy
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6
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Barrett TE, Robinson EM, Usenko S, Sheesley RJ. Source Contributions to Wintertime Elemental and Organic Carbon in the Western Arctic Based on Radiocarbon and Tracer Apportionment. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2015; 49:11631-11639. [PMID: 26325404 DOI: 10.1021/acs.est.5b03081] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
To quantify the contributions of fossil and biomass sources to the wintertime Arctic aerosol burden source apportionment is reported for elemental (EC) and organic carbon (OC) fractions of six PM10 samples collected during a wintertime (2012-2013) campaign in Barrow, AK. Radiocarbon apportionment of EC indicates that fossil sources contribute an average of 68 ± 9% (0.01-0.07 μg m(-3)) in midwinter decreasing to 49 ± 6% (0.02 μg m(-3)) in late winter. The mean contribution of fossil sources to OC for the campaign was stable at 38 ± 8% (0.04-0.32 μg m(-3)). Samples were also analyzed for organic tracers, including levoglucosan, for use in a chemical mass balance (CMB) source apportionment model. The CMB model was able to apportion 24-53% and 99% of the OC and EC burdens, respectively, during the campaign, with fossil OC contributions ranging from 25 to 74% (0.02-0.09 μg m(-3)) and fossil EC contributions ranging from 73 to 94% (0.03-0.07 μg m(-3)). Back trajectories identified two major wintertime source regions to Barrow: the Russian and North American Arctic. Atmospheric lifetimes of levoglucosan, ranging from 50 to 320 h, revealed variability in wintertime atmospheric processing of this biomass burning tracer. This study allows for unambiguous apportionment of EC to fossil fuel and biomass combustion sources and intercomparison with CMB modeling.
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Affiliation(s)
- T E Barrett
- The Institute of Ecological, Earth, and Environmental Sciences, Baylor University , One Bear Place #97205, Waco, Texas-76798, United States
| | - E M Robinson
- The Institute of Ecological, Earth, and Environmental Sciences, Baylor University , One Bear Place #97205, Waco, Texas-76798, United States
| | - S Usenko
- The Institute of Ecological, Earth, and Environmental Sciences, Baylor University , One Bear Place #97205, Waco, Texas-76798, United States
- Department of Environmental Science, Baylor University , One Bear Place #97266, Waco, Texas-76798, United States
| | - R J Sheesley
- The Institute of Ecological, Earth, and Environmental Sciences, Baylor University , One Bear Place #97205, Waco, Texas-76798, United States
- Department of Environmental Science, Baylor University , One Bear Place #97266, Waco, Texas-76798, United States
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Bory AJM, Abouchami W, Galer SJG, Svensson A, Christensen JN, Biscaye PE. A Chinese imprint in insoluble pollutants recently deposited in central Greenland as indicated by lead isotopes. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2014; 48:1451-1457. [PMID: 24377320 DOI: 10.1021/es4035655] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A unique ∼ 10 year record of the lead isotopic composition of airborne insoluble particulate matter deposited in central Greenland was extracted from recent snow layers at NorthGRIP (75.1°N, 042.3°W; elevation 2,959 m), spanning the years 1989-2001. Comparison with lead isotopic signatures of both natural and anthropogenic northern hemisphere (NH) aerosol sources shows that human activities must have accounted for most of the insoluble lead deposited on Greenland during the late 1990 s, exceeding by far the natural contribution from large Asian mineral dust inputs. Lead isotopes imply predominance with time of European/Canadian sources over U.S.-derived lead, with an admixed signature typical of Chinese anthropogenic lead sources. The relative contribution of the latter shows a marked seasonal increase during spring. Our record also suggests that China's weight in the overall supply of insoluble pollutants deposited on Greenland was growing over the past decade of the 20th century.
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Affiliation(s)
- Aloys J-M Bory
- Lamont-Doherty Earth Observatory of Columbia University , Palisades, New York 10964, United States
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Kamboures MA, Hu S, Yu Y, Sandoval J, Rieger P, Huang SM, Zhang S, Dzhema I, Huo D, Ayala A, Chang MCO. Black carbon emissions in gasoline vehicle exhaust: a measurement and instrument comparison. JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION (1995) 2013; 63:886-901. [PMID: 24010369 DOI: 10.1080/10962247.2013.787130] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
UNLABELLED A pilot study was conducted to evaluate the performance and agreement of several commercially available black carbon (BC) measurement instruments, when applied to the quantification of BC in light-duty vehicle (LDV) exhaust. Samples from six vehicles, three fuels, and three driving cycles were used. The pilot study included determinations of the method detection limit (MDL) and repeatability. With respect to the MDL, the real-time instruments outperformed the time-integrated instruments, with MDL = 0.12 mg/mi for the AE51 Aethalometer, and 0.15 mg/mi for the Micro Soot Sensor (MSS), versus 0.38 mg/mi for the IMPROVE_A thermal/ optical method, and 0.35 mg/mi for the OT21_T Optical Transmissometer. The real-time instruments had repeatability values ranging from 30% to 35%, which are somewhat better than those of the time-integrated instruments (40-41%). These results suggest that, despite being less resource intensive, real-time methods can be equivalent or superior to time-integrated methods in terms of sensitivity and repeatability. BC mass data, from the photoacoustic and light attenuation instruments, were compared against same-test EC data, determined using the IMPROVE_A method. The MSS BC data was well correlated with EC, with R2 = 0.85 for the composite results and R2 = 0.86 for the phase-by-phase (PBP) results. The correlation of BC, by the AE51, AE22, and OT21_T with EC was moderate to weak. The weaker correlation was driven by the inclusion of US06 test data in the linear regression analysis. We hypothesize that test-cycle-dependent BC:EC ratios are due to the different physicochemical properties of particulate matter (PM) in US06 and Federal Test Procedure (FTP) tests. Correlation amongst the real-time MSS, PASS-1, AE51, and AE22 instruments was excellent (R2 = 0.83-0.95), below 1 mg/mi levels. In the process of investigating these BC instruments, we learned that BC emissions at sub-1 mg/mi levels can be measured and are achievable by current-generation gasoline engines. IMPLICATIONS Most comparison studies of black carbon (BC) measurement methods were carried out in the ambient air. This study assesses the agreement among various BC measurement instrument in emissions from light-duty gasoline vehicles (LDGVs) on standard test cycles, and evaluates applicability of these methods under various fuel types, driving cycles, and engine combustion technologies. This research helps to fill in the knowledge gap of BC method standardization as stated in the U.S. Environmental Protection Agency (EPA) 2011 Report to Congress on Black Carbon, and these results demonstrate the feasibility of quantification of BC at the 1 mg/mi PM standard in California Low Emission Vehicle III regulations.
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Affiliation(s)
- Michael A Kamboures
- Southern Laboratory Branch of the California Resources Board, 9480 Telstar Avenue, Suite 4, El Monte, CA 91731, USA
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Callaghan TV, Johansson M, Brown RD, Groisman PY, Labba N, Radionov V, Barry RG, Bulygina ON, Essery RLH, Frolov DM, Golubev VN, Grenfell TC, Petrushina MN, Razuvaev VN, Robinson DA, Romanov P, Shindell D, Shmakin AB, Sokratov SA, Warren S, Yang D. The Changing Face of Arctic Snow Cover: A Synthesis of Observed and Projected Changes. AMBIO 2011; 40:17-31. [PMCID: PMC3357780 DOI: 10.1007/s13280-011-0212-y] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Analysis of in situ and satellite data shows evidence of different regional snow cover responses to the widespread warming and increasing winter precipitation that has characterized the Arctic climate for the past 40–50 years. The largest and most rapid decreases in snow water equivalent (SWE) and snow cover duration (SCD) are observed over maritime regions of the Arctic with the highest precipitation amounts. There is also evidence of marked differences in the response of snow cover between the North American and Eurasian sectors of the Arctic, with the North American sector exhibiting decreases in snow cover and snow depth over the entire period of available in situ observations from around 1950, while widespread decreases in snow cover are not apparent over Eurasia until after around 1980. However, snow depths are increasing in many regions of Eurasia. Warming and more frequent winter thaws are contributing to changes in snow pack structure with important implications for land use and provision of ecosystem services. Projected changes in snow cover from Global Climate Models for the 2050 period indicate increases in maximum SWE of up to 15% over much of the Arctic, with the largest increases (15–30%) over the Siberian sector. In contrast, SCD is projected to decrease by about 10–20% over much of the Arctic, with the smallest decreases over Siberia (<10%) and the largest decreases over Alaska and northern Scandinavia (30–40%) by 2050. These projected changes will have far-reaching consequences for the climate system, human activities, hydrology, and ecology.
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Affiliation(s)
| | - Margareta Johansson
- Department of Earth and Ecosystem Sciences, Division of Physical Geography and Ecosystem Analyses, Lund University, Sölvegatan 12, 223 62 Lund, Sweden
| | - Ross D. Brown
- Climate Research Division of Environment Canada, Ouranos Climate Consortium, c/o Ouranos, 550 Sherbrooke St. West, 19th Floor, Montreal, QC H3A 1B9 Canada
| | - Pavel Ya. Groisman
- NOAA/NESDIS National Climatic Data Center, Veach-Baley Federal Building, 151 Patton Avenue, Asheville, NC 28801-5001 USA
| | - Niklas Labba
- Gáisi Sámi Centre, Lakselvbukt, 9042 Laksvatn, Norway
| | - Vladimir Radionov
- AARI, 38 Bering Str., Saint Petersburg, The Russian Federation 199397
| | - Roger G. Barry
- NSIDC/CIRES, University of Colorado, Boulder, CO 80309-0449 USA
| | - Olga N. Bulygina
- Climatology Department, All-Russian Research Institute of Hydrometeorological Information—World Data Centre (RIHMI-WDC), 6 Koroleva Street, Obninsk, Kaluga Region, The Russian Federation 249035
| | | | - D. M. Frolov
- Laboratory of Snow Avalanches and Mudflows, Faculty of Geography, Moscow State University, Leninskie Gory, 1, Moscow, The Russian Federation 119991
| | - Vladimir N. Golubev
- Laboratory of Snow Avalanches and Mudflows, Faculty of Geography, Moscow State University, Leninskie Gory, 1, Moscow, The Russian Federation 119991
| | - Thomas C. Grenfell
- Department of Atmospheric Sciences, MS 351640, University of Washington, Seattle, WA 98195-1640 USA
| | - Marina N. Petrushina
- Department of Physical Geography and Landscapes, Faculty of Geography, Moscow State University, Leninskie Gory, 1, Moscow, The Russian Federation 119991
| | | | - David A. Robinson
- Department of Geography, Rutgers University, 54 Joyce Kilmer Avenue, Piscataway, NJ 08854 USA
| | - Peter Romanov
- NOAA/NESDIS World Weather Building Rm. 711, 5200 Auth Rd., Camp Springs, MD 20746 USA
| | - Drew Shindell
- NASA Goddard Institute for Space Studies, 2880 Broadway, New York, NY 10025 USA
| | - Andrey B. Shmakin
- Institute of Geography, 29 Staromonetny St., Moscow, The Russian Federation 119017
| | - Sergey A. Sokratov
- Faculty of Geography, Natural Risks Assessment Laboratory, Moscow State University, GSP-1, Leninskiye Gory 1, Moscow, The Russian Federation 119991
| | - Stephen Warren
- Department of Atmospheric Sciences, and of Earth & Space Sciences, University of Washington, Seattle, WA 98195-1640 USA
| | - Daquing Yang
- Water and Environmental Research Center, University of Alaska Fairbanks, Fairbanks, AK USA
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Grenfell TC, Warren SG, Radionov VF, Makarov VN, Zimov SA. Expeditions to the Russian Arctic to Survey Black Carbon in Snow. ACTA ACUST UNITED AC 2011. [DOI: 10.1029/2009eo430002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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11
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Bourgeois Q, Bey I. Pollution transport efficiency toward the Arctic: Sensitivity to aerosol scavenging and source regions. ACTA ACUST UNITED AC 2011. [DOI: 10.1029/2010jd015096] [Citation(s) in RCA: 108] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Abstract
To limit mean global warming to 2 degrees C, a goal supported by more than 100 countries, it will likely be necessary to reduce emissions not only of greenhouse gases but also of air pollutants with high radiative forcing (RF), particularly black carbon (BC). Although several recent research papers have attempted to quantify the effects of BC on climate, not all these analyses have incorporated all the mechanisms that contribute to its RF (including the effects of BC on cloud albedo, cloud coverage, and snow and ice albedo, and the optical consequences of aerosol mixing) and have reported their results in different units and with different ranges of uncertainty. Here we attempt to reconcile their results and present them in uniform units that include the same forcing factors. We use the best estimate of effective RF obtained from these results to analyze the benefits of mitigating BC emissions for achieving a specific equilibrium temperature target. For a 500 ppm CO(2)e (3.1 W m(-2)) effective RF target in 2100, which would offer about a 50% chance of limiting equilibrium warming to 2.5 degrees C above preindustrial temperatures, we estimate that failing to reduce carbonaceous aerosol emissions from contained combustion would require CO(2) emission cuts about 8 years (range of 1-15 years) earlier than would be necessary with full mitigation of these emissions.
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