NSF 05-39, Arctic Research in the United States, Volume 19, Spring

Total Page:16

File Type:pdf, Size:1020Kb

NSF 05-39, Arctic Research in the United States, Volume 19, Spring This document has been archived. VOLUME 19 SPRING/SUMMER 2005 A R C T I C R E S E A R C H O F T H E U N I T E D S T A T E S I N T E R A G E N C Y A R C T I C R E S E A R C H P O L I C Y C O M M I T T E E The journal Arctic Research of the United refereed for scientific content or merit since the About States is for people and organizations interested journal is not intended as a means of reporting the in learning about U.S. Government-financed scientific research. Articles are generally invited Arctic research activities. It is published semi- and are reviewed by agency staffs and others as Journal annually (spring and fall) by the National Science appropriate. Foundation on behalf of the Interagency Arctic As indicated in the U.S. Arctic Research Plan, Research Policy Committee (IARPC). The research is defined differently by different agen- Interagency Committee was authorized under the cies. It may include basic and applied research, Arctic Research and Policy Act (ARPA) of 1984 monitoring efforts, and other information-gathering (PL 98-373) and established by Executive Order activities. The definition of Arctic according to the 12501 (January 28, 1985). Publication of the jour- ARPA is “all United States and foreign territory nal has been approved by the Office of Manage- north of the Arctic Circle and all United States ment and Budget. territory north and west of the boundary formed Arctic Research contains by the Porcupine, Yukon, and Kuskokwim Rivers; • Reports on current and planned U.S. Govern- all contiguous seas, including the Arctic Ocean ment-sponsored research in the Arctic; and the Beaufort, Bering, and Chukchi Seas; and • Reports of IARPC meetings; and the Aleutian chain.” Areas outside of the bound- • Summaries of other current and planned ary are discussed in the journal when considered Arctic research, including that of the State of relevant to the broader scope of Arctic research. Alaska, local governments, the private sec- Issues of the journal will report on Arctic tor, and other nations. topics and activities. Included will be reports of Arctic Research is aimed at national and inter- conferences and workshops, university-based national audiences of government officials, scien- research and activities of state and local govern- tists, engineers, educators, private and public ments and public, private and resident organiza- groups, and residents of the Arctic. The emphasis tions. Unsolicited nontechnical reports on is on summary and survey articles covering U.S. research and related activities are welcome. Government-sponsored or -funded research rath- Address correspondence to Editor, Arctic er than on technical reports, and the articles are Research, Arctic Research and Policy Staff, intended to be comprehensible to a nontechnical Office of Polar Programs, National Science audience. Although the articles go through the Foundation, 4201 Wilson Boulevard, Arlington, normal editorial process, manuscripts are not VA 22230. Cover The medusa Sminthia arctica, the most common species identified by video in the transition between the Pacific and Atlantic water layers of the Canada Basin, measured during an expedition to the Arctic Ocean in 2002. This gelati- nous species is less than a millimeter in width. VOLUME 19 SPRING/SUMMER 2005 A R C T I C R E S E A R C H O F T H E U N I T E D S T A T E S INTERAGENCY ARCTIC RESEARCH POLICY COMMITTEE DEPARTMENT OF AGRICULTURE SPECIAL ISSUE ON THE NATIONAL OCEANIC AND ATMOSPHERIC DEPARTMENT OF COMMERCE ADMINISTRATION’S RESEARCH IN THE ARCTIC DEPARTMENT OF DEFENSE The Role of the National Oceanic and Atmospheric DEPARTMENT OF ENERGY Administration in the Arctic Region ........................... 2 DEPARTMENT OF HEALTH AND HUMAN SERVICES NOAA’s Arctic Ocean Exploration Program................. 3 DEPARTMENT OF HOMELAND SECURITY Arctic Sea Ice and Ocean Observations ..................... 11 DEPARTMENT OF THE INTERIOR Correlated Declines in Pacific Arctic Snow and Sea Ice Cover ................................................... 18 DEPARTMENT OF STATE Acidifying Pollutants, Arctic Haze, and DEPARTMENT OF TRANSPORTATION Acidification in the Arctic......................................... 26 ENVIRONMENTAL PROTECTION A GENCY The Barrow Atmospheric Baseline Observatory ......... 34 NATIONAL A ERONAUTICS AND SPACE A DMINISTRATION NOAA and the Alaska Ocean Observing System ....... 41 NATIONAL SCIENCE FOUNDATION Marine Mammals in the Bering/Chukchi Sea .............. 50 SMITHSONIAN INSTITUTION Ocean Climate Changes and the Steller Sea Lion Decline ........................................... 54 OFFICE OF MANAGEMENT AND BUDGET Status of Alaska Groundfish Stocks ............................. 64 OFFICE OF SCIENCE AND TECHNOLOGY POLICY Status of Alaska’s Salmon Fisheries............................. 66 Managing Editorial Committee Russian–American Long-term Census of the Arctic ... 73 Charles E. Myers, National Science Foundation—Editor On the Creation of Environmental Data Sets John Haugh, Bureau of Land Management—Associate Editor for the Arctic Region ................................................ 77 David W. Cate, Cold Regions Research and Engineering Laboratory—Consulting Editor Interagency Arctic Research Policy Committee Staff ....................................................... 93 Editing and production: Cold Regions Research and Engineering Laboratory, Hanover, New Hampshire 1 The Role of the National Oceanic and Atmospheric Administration in the Arctic Region This issue of the Arctic Research of the United This issue of Arctic Research of the United States profiles Arctic research carried out by the States presents to the Arctic community slices of National Oceanic and Atmospheric Administration NOAA’s Arctic research life. Articles cover Arctic (NOAA). NOAA, an agency of the Department of atmospheric, ocean, ice, and marine life research, Commerce, has four mission goals: in particular, the topics of Arctic Haze, the Barrow • To protect, restore, and manage resources in Atmospheric Baseline Observatory, declines in the oceans and the atmosphere; Pacific Arctic snow and sea ice cover, Arctic sea • To understand climate change and variability; ice and ocean observations, the Alaska Ocean • To fulfill weather and water information Observing System, the Arctic Ocean exploration needs; and program, the Russian–American Long-term Cen- • To support the commerce and transportation sus of the Arctic, ocean climate changes and needs of the United States. the Steller sea lion decline, the status of Alaska The breadth of science carried out at NOAA is groundfish stocks and salmon fisheries assess- spread between the NOAA National Weather Ser- ments, and the status of marine mammals in the vice (NWS), the primary source of weather data, Bering/Chukchi Seas. In addition, there are articles forecasts, and warnings for the U.S.; the NOAA from individuals who receive external research Ocean Service (NOS), responsible for the observa- funding from NOAA. tion, measurement, assessment, and management To wrap up these timely Arctic research topics, of the nation’s vast coastal and ocean areas; the the National Snow and Ice Data Center presents an National Environmental Satellite and Data Informa- article on the creation of environmental data sets tion Services (NESDIS), which provides timely for the Arctic. Calling on the history of former access to global environmental data from satellites International Polar Years, this article raises critical This article was and other sources to promote, protect, and questions about the future role of data centers prepared by Kathleen enhance the nation’s economy, security, environ- during the upcoming International Polar Year (IPY). Crane, of NOAA’s ment, and quality of life; NOAA’s National Marine As the United States rapidly approaches the Arctic Research Office. Fisheries Service (NMFS), which is dedicated to IPY of 2007–2008, NOAA is poised to make impor- the stewardship of living marine resources through tant, innovative, and far-reaching inroads into the science-based ecosystem management; and further exploration and understanding of the Arc- NOAA’s Oceanic and Atmospheric Research tic region and to help create a legacy of polar (OAR), which provides unbiased information to research and observational platforms vitally better manage the complex systems of the atmo- important for the present-day and future under- sphere, the climate, and ocean and coastal standing of the Arctic’s influence on the climate resources. of the earth. 2 NOAA’s Arctic Ocean Exploration Program The Arctic Ocean is largely unexplored, espe- Exploration Approach cially those aspects not visible to the human eye from a surface ship or to a satellite sensor. Some NOAA and its domestic and international part- data collected for national defense purposes are ners decided in 2001 to undertake expeditions of now available, and they provide a better picture exploration and discovery in the Arctic Ocean, of the bathymetry and circulation of the Arctic with initial emphasis on missions of discovery Ocean. In addition, the International Arctic Buoy near the Pacific Gateway to the Arctic, the Canada This article was prepared by Kathleen Crane, of Programme contributes data on ice drift trajecto- Basin, and the Mendeleev Basin. Additional NOAA’s Arctic Research ries and surface meteorology. While there have emphasis has grown to include a census of marine Office; Jeremy Potter, of been intensive research campaigns, such as the life plus the mapping and imaging of previously NOAA’s
Recommended publications
  • Oregon State University Insert PDF 480 K
    ARCTIC Arctic Research Consortium of the United States Member Institution Winter 2004/2005, Volume 11 Number 2 Arctic Research at Oregon State University land grant university, Oregon State Geosciences A University was designated as Oregon’s state-assisted agricultural college in 1868. Polar Ice Cores Sea grant and space grant designation came Ed Brook (Geosciences) applies geochemical techniques to diverse problems in late Quater- later, making OSU one of only six universi- nary paleoclimatology; several of his projects have arctic components. NSF-supported work ties to have all three titles. OSU currently focused on the relative timing of millennial-scale abrupt climate change in Greenland and enrolls 15,599 undergraduate and 3,380 Antarctica uses atmospheric methane and the isotopic composition of oxygen as correlation graduate students in more than 200 under- tools to place climate records from the Siple Dome (west Antarctica) and GISP2 (Green- graduate and 80 graduate degree programs. land) ice cores on a precise common chronology for the period from 9–57 ka. The onset With collaborative connections across of major millennial warming events in Siple Dome precedes major abrupt warmings in the globe, OSU researchers contribute to Greenland, and the pattern of millennial change at Siple Dome is broadly similar, though arctic research from disciplines housed in not identical, to that previously observed for the Byrd ice core (also in west Antarctica). a variety of colleges. The College of Oce- The addition of Siple Dome to the database of well-dated Antarctic paleoclimate records anic and Atmospheric Sciences (COAS) supports the case for a regionally consistent pattern of millennial-scale climate change in has several researchers working on arctic Antarctica during the last ice age and glacial-interglacial transition.
    [Show full text]
  • Arctic Climate Change Implications for U.S
    Arctic Climate Change Implications for U.S. National Security Perspective - Laura Leddy September 2020 i BOARD OF DIRECTORS The Honorable Gary Hart, Chairman Emeritus Scott Gilbert Senator Hart served the State of Colorado in the U.S. Senate Scott Gilbert is a Partner of Gilbert LLP and Managing and was a member of the Committee on Armed Services Director of Reneo LLC. during his tenure. Vice Admiral Lee Gunn, USN (Ret.) Governor Christine Todd Whitman, Chairperson Vice Admiral Gunn is Vice Chairman of the CNA Military Christine Todd Whitman is the President of the Whitman Advisory Board, Former Inspector General of the Department Strategy Group, a consulting firm that specializes in energy of the Navy, and Former President of the Institute of Public and environmental issues. Research at the CNA Corporation. The Honorable Chuck Hagel Brigadier General Stephen A. Cheney, USMC (Ret.), Chuck Hagel served as the 24th U.S. Secretary of Defense and President of ASP served two terms in the United States Senate (1997-2009). Hagel Brigadier General Cheney is the President of ASP. was a senior member of the Senate Foreign Relations; Banking, Housing and Urban Affairs; and Intelligence Committees. Matthew Bergman Lieutenant General Claudia Kennedy, USA (Ret.) Matthew Bergman is an attorney, philanthropist and Lieutenant General Kennedy was the first woman entrepreneur based in Seattle. He serves as a Trustee of Reed to achieve the rank of three-star general in the United States College on the Board of Visitors of Lewis & Clark Law Army. School. Ambassador Jeffrey Bleich The Honorable John F. Kerry The Hon.
    [Show full text]
  • Arctic Policy &
    Arctic Policy & Law References to Selected Documents Edited by Wolfgang E. Burhenne Prepared by Jennifer Kelleher and Aaron Laur Published by the International Council of Environmental Law – toward sustainable development – (ICEL) for the Arctic Task Force of the IUCN Commission on Environmental Law (IUCN-CEL) Arctic Policy & Law References to Selected Documents Edited by Wolfgang E. Burhenne Prepared by Jennifer Kelleher and Aaron Laur Published by The International Council of Environmental Law – toward sustainable development – (ICEL) for the Arctic Task Force of the IUCN Commission on Environmental Law The designation of geographical entities in this book, and the presentation of material, do not imply the expression of any opinion whatsoever on the part of ICEL or the Arctic Task Force of the IUCN Commission on Environmental Law concerning the legal status of any country, territory, or area, or of its authorities, or concerning the delimitation of its frontiers and boundaries. The views expressed in this publication do not necessarily reflect those of ICEL or the Arctic Task Force. The preparation of Arctic Policy & Law: References to Selected Documents was a project of ICEL with the support of the Elizabeth Haub Foundations (Germany, USA, Canada). Published by: International Council of Environmental Law (ICEL), Bonn, Germany Copyright: © 2011 International Council of Environmental Law (ICEL) Reproduction of this publication for educational or other non- commercial purposes is authorized without prior permission from the copyright holder provided the source is fully acknowledged. Reproduction for resale or other commercial purposes is prohibited without the prior written permission of the copyright holder. Citation: International Council of Environmental Law (ICEL) (2011).
    [Show full text]
  • Air Pollution in Cold Regions - Philip K
    COLD REGIONS SCIENCE AND MARINE TECHNOLOGY - Air Pollution in Cold Regions - Philip K. Hopke AIR POLLUTION IN COLD REGIONS Philip K. Hopke Center for Air Resource Engineering and Science, Clarkson University Keywords: air pollution, particulate matter, Arctic Haze, ozone, mercury, depletion events Contents 1. Introduction 2. Arctic Air Pollution 2.1. Particulate Matter 2.1.1. Introduction 2.1.2. Long Term Monitoring Programs 2.1.3. Source-Receptor Relationships 2.1.4. Concentration Trends 2.2. Arctic Photochemistry 3. Antarctic Pollution 4. Conclusions Glossary Bibliography Biographical Sketch Summary This chapter provides an overview of the nature of the constituents in the atmosphere and the changes in concentrations of these constituents that is termed air pollution. The focus will be on the changes in the cold regions of the earth with emphasis on the polar areas, the Arctic and the Antarctic. Although there is limited anthropogenic activity in these areas, there are concentrations of atmospheric constituents that are above those levels that are likely to have been present before the start of the industrial revolution. These changes can be both qualitative and quantitative. The nature of the sources, transport, and chemical processes that lead to the pollution of these regions is described. UNESCO – EOLSS 1. Introduction The atmosphere is a complex chemical system that has evolved through interactions with the lithosphere,SAMPLE hydrosphere and bios phere.CHAPTERS Gases and particles are exchanged between the surfaces of the land and water. There are gaseous and particulate emissions from plants and animals as well as from anthropogenic activities. They undergo complex chemical processing driven primarily by sunlight so that the cold regions of the world present unique circumstances because there are periods with no or so little sunlight as to halt photochemical processing.
    [Show full text]
  • Arctic Council and AMAP
    Arctic Monitoring and Assessment Programme (AMAP) HTAP Meeting Potsdam, 17-19 February 2016 Martin Forsius (AMAP WG Chair) ([email protected]) Simon Wilson (AMAP Secretariat) ([email protected]) [email protected] www.amap.no Arctic Council and AMAP Arctic Council: “a high-level forum for political discussions on common issues to the governments of the Arctic States and its inhabitants. It is the only circumpolar forum for political discussions on Arctic issues, involving all the Arctic states, and with the active participation of its Indigenous Peoples.” AMAP: "provides reliable and sufficient information on the status of, and threats to, the Arctic environment, and provides scientific advice on actions to be taken in order to support Arctic governments in their efforts to take remedial and preventive actions relating to contaminants and adverse effects of climate change“ The Arctic Council have mandated AMAP to support the development and implementation of international agreements including the UN ECE Convention on Long- range Transboundary Air Pollution National implementation Regional coordination Based on national activities (e.g. Canada High degree of coordination with other NCP, Greenlandic AMAP MP); relevant regional monitoring Harmonization where necessary programmes Arctic (background) air monitoring Station Nord, Greenland Alert, Ellesmere Island, Canada Zeppelin, Ny-Ålesund, Svalbard Stórhöfði , Iceland Pallas, Arctic Finland AMAP Assessment 2006: Acidifying Pollutants, Arctic Haze and Acidification in the Arctic Recommendation: Future AMAP assessments view acidification and arctic haze in the wider context of air pollution and climate change. The issues addressed in this more integrated type of assessment should include hemispheric transport of air pollutants, emissions from forest fires, particulate matter, and climate change effects.
    [Show full text]
  • The Arctic Ozone Layer
    The Arctic Ozone Layer How the Arctic Ozone Layer is Responding to Ozone-Depleting Chemicals and Climate Change Photographs are the property of the EC ARQX picture archive. Special permission was obtained from Mike Harwood (p. vii: Muskoxen on Ellesmere Island), Richard Mittermeier (pp. vii, 12: Sunset from the Polar Environment Atmospheric Research Laboratory), Angus Fergusson (p. 4: Iqaluit; p. 8: Baffin Island), Yukio Makino (p. vii: Instrumentation and scientist on top of the Polar Environment Atmospheric Research Laboratory), Tomohiro Nagai (p. 25: Figure 20), and John Bird (p. 30: Polar Environment Atmospheric Research Laboratory). To obtain additional copies of this report, write to: Angus Fergusson Science Assessments Section Science & Technology Integration Division Environment Canada 4905 Dufferin Street Toronto ON M3H 5T4 Canada Please send feedback, comments and suggestions to [email protected] © Her Majesty the Queen in Right of Canada, represented by the Minister of the Environment, 2010. Catalogue No.: En164-18/2010E ISBN: 978-1-100-10787-5 Aussi disponible en français The Arctic Ozone Layer How the Arctic Ozone Layer is Responding to Ozone-Depleting Chemicals and Climate Change by Angus Fergusson Acknowledgements The author wishes to thank David Wardle, Ted Shepherd, Norm McFarlane, Nathan Gillett, John Scinocca, Darrell Piekarz, Ed Hare, Elizabeth Bush, Jacinthe Lacroix and Hans Fast for their valuable advice and assistance during the preparation of this manuscript. i Contents Summary ....................................................................................................................................................
    [Show full text]
  • CATF, AG Fires, 11/16
    AGRICULTURAL FIRES AND ARCTIC CLIMATE CHANGE: A SPECIAL CATF REPORT ________________________________________________________________________________________________ ASHLEY PETTUS MAY 2009 CATF is a nonprofit organization dedicated to reducing atmospheric pollution through research, advocacy, and private sector collaboration. This work was supported by ClimateWorks and benefitted from the time and assistance of Madhura Kulkarni, Johann Goldammer, Amber Soja and Stefania Korontzi. However, the opinions expressed are solely those of the Clean Air Task Force. Cover photo reprinted with permission from Larry Moore MAIN OFFICE 18 Tremont Street Suite 530 Boston, MA 02108 617.624.0234 [email protected] www.catf.us Agricultural Fires and Arctic Climate Change 2 Executive Summary Over the past century, the Arctic has been warming at nearly twice the rate of the rest of the planet. While increases in carbon dioxide and other greenhouse gases account for much of this steep warming trend, the Arctic is also highly sensitive to short-lived pollutants—gases and aerosols that travel north from lower latitudes, impacting the Arctic climate in the near term. Black carbon aerosol, or soot, which is produced through incomplete combustion of biomass and fossil fuels, accounts for as much as 30 percent of Arctic warming to date, according to recent estimates. Springtime deposits of black carbon pose a particular threat to the Arctic climate because of their potential to accelerate melting of snow and ice. Agricultural fires, intended to remove crop residues for new planting or clear brush for grazing, contribute a significant portion of the black carbon from biomass burning that reaches the Arctic in spring. Remote sensing of fires in non-forest lands, combined with analysis of chemical transport models and fire emissions databases, reveal that concentrations of black carbon from agricultural burning are highest in areas across Eurasia—from Eastern Europe, through southern and Siberian Russia, into Northeastern China—and in the northern part of North America’s grain belt.
    [Show full text]
  • Combined Power and Biomass Heating System Fort Yukon, Alaska
    FINAL ENVIRONMENTAL ASSESSMENT FOR A COMBINED POWER AND BIOMASS HEATING SYSTEM FORT YUKON, ALASKA U.S. Department of Energy Office of Energy Efficiency and Renewable Energy GOLDEN FIELD OFFICE In Cooperation with USDA RURAL UTILITIES SERVICE DENALI COMMISSION APRIL 2013 ABBREVIATIONS AND ACRONYMS ADEC Alaska Department of Environmental Conservation NEPA National Environmental Policy Act AFRPA Alaska Forest Resources Practices NFS Act Non‐Frost Susceptible BFE Base Flood Elevation NMFS National Marine Fisheries Service BMP best management practice NO2 nitrogen dioxide BTU British Thermal Unit NOX nitrogen oxide CATG Council of Athabascan Tribal Governments NPDES National Pollutant Discharge CEQ Council on Environmental Quality Elimination System CFR Code of Federal Regulations O3 Ozone CHP Combined Heat and Power OSHA Occupational Safety and Health Administration CO carbon monoxide Pb Lead CO2 carbon dioxide PM2.5 particulate Matter equal to or less CWA Clean Water Act than 2.5 microns in diameter dBA A-weighted decibel PM10 particulate Matter equal to or less than 10 microns in diameter DBH diameter at breast height ppb parts per billion DOE U.S. Department of Energy ppm parts per million EA Environmental Assessment PSD Prevention of Significant EFH Essential Fish Habitat Deterioration EO Executive Order RCA Regulatory Commission of Alaska Degrees Fahrenheit °F SO2 sulfur dioxide FEMA Federal Emergency Management SPCC Spill Prevention, Control, and Agency Countermeasure FONSI Finding of No Significant Impact SWPPP Storm Water Pollution Prevention Plan GHG greenhouse gas TCC Tanana Chiefs Conference GZC Gwitchyaa Zhee Corporation U.S.C. United States Code GZGTG Gwitchyaa Zhee Gwich’in Tribal Government USACE U.S. Army Corps of Engineers GZU Gwitchyaa Zhee Utility Company USDA U.S.
    [Show full text]
  • Nitrogen Accumulation in High Arctic Tundra from Extreme Atmospheric
    1 Nitrogen accumulation and partitioning in High Arctic tundra ecosystem 2 from extreme atmospheric N deposition events 3 4 Sonal Choudhary1,2*, Aimeric Blaud1, A. Mark Osborn1,3, Malcolm C. Press4, Gareth K. 5 Phoenix1 6 7 1Department of Animal and Plant Sciences, University of Sheffield, Western Bank, Sheffield, 8 S10 2TN, UK 9 2Management School, University of Sheffield, Conduit Road, Sheffield, S10 1FL, UK 10 3School of Applied Sciences, RMIT University, PO Box 71, Bundoora, VIC 3083, Australia 11 4School of Biosciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK 12 Corresponding author: 13 Sonal Choudhary 14 e: [email protected], t: +44 (0)114 222 3287; f: +44 (0)114 222 3348 15 16 Running Headline: Extreme N deposition event fate in High Arctic Tundra 17 18 19 20 21 22 23 24 25 26 1 27 Graphical abstract 28 29 30 Highlights 31 • High Arctic tundra demonstrated a very high (90–95%) N pollutant retention capacity. 32 • Non-vascular plants and soil microbial biomass were important short-term N sinks. 33 • Vascular plants and soil showed capacity to be efficient longer-term N sinks. 34 • Deposition rich in nitrate can alter almost all ecosystem N pools. 35 • Extreme N depositions may already be contributing to the N enrichment of tundra. 36 37 38 Abstract 39 Arctic ecosystems are threatened by pollution from recently detected extreme 40 atmospheric nitrogen (N) deposition events in which up to 90% of the annual N deposition 41 can occur in just a few days. We undertook the first assessment of the fate of N from extreme 42 deposition in High Arctic tundra and are presenting the results from the whole ecosystem 15N 43 labelling experiment.
    [Show full text]
  • Contribution of Changes in Anthropogenic Aerosol to Arctic
    PUBLICATIONS Journal of Geophysical Research: Atmospheres RESEARCH ARTICLE Multidecadal trends in aerosol radiative forcing 10.1002/2016JD025321 over the Arctic: Contribution of changes Special Section: in anthropogenic aerosol to Arctic The Arctic: An AGU Joint Special Collection warming since 1980 Thomas J. Breider1, Loretta J. Mickley1 , Daniel J. Jacob1, Cui Ge2,3, Jun Wang2,3 , Key Points: 1 4 5 6 • Melissa Payer Sulprizio , Betty Croft , David A. Ridley , Joseph R. McConnell , Observed sulfate and BC mass 7 8 8 9 concentrations at Arctic surface Sangeeta Sharma , Liaquat Husain , Vincent A. Dutkiewicz , Konstantinos Eleftheriadis , sites and Greenland ice cores show Henrik Skov10 , and Phillip K. Hopke11 decreases of 2–3%/yr between 1980 and 2010 1John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts, USA, 2Center • Anthropogenic aerosol RF is negative for Global and Regional Environmental Research, University of Iowa, Iowa City, Iowa, USA, 3Department of Chemical and in the Arctic troposphere due to a 4 large negative RF from sulfate in Biochemical Engineering, University of Iowa, Iowa City, Iowa, USA, Department of Physics and Atmospheric Science, À 5 spring (À1.17 ± 0.10 W m 2) Dalhousie University, Halifax, Nova Scotia, Canada, Department of Civil and Environmental Engineering, Massachusetts • The 1980–2010 trends in Institute of Technology, Cambridge, Massachusetts, USA, 6Desert Research Institute, Reno, Nevada, USA, 7Atmospheric aerosol-radiation interactions over Science
    [Show full text]
  • Arctic Warming: Short-Term Solutions : Nature Climate Change : Nature
    Arctic warming: Short-term solutions : Nature Climate Change : Na... http://www.nature.com.login.ezproxy.library.ualberta.ca/nclimate/j... nature.com Publications A-Z index Browse by subject Access provided to Login Register Cart University of Alberta by Bibliographic Services - Serials NATURE CLIMATE CHANGE | NEWS AND VIEWS Arctic warming: Short-term solutions Julia Schmale Nature Climate Change 6, 234–235 (2016) doi:10.1038/nclimate2897 Published online 30 November 2015 Arctic temperatures are increasing because of long- and short-lived climate forcers, with reduction of the short-lived species potentially offering some quick mitigation. Now a regional assessment reveals the emission locations of these short-lived species and indicates Print international co-operation is needed to develop an effective mitigation plan. Subject terms: Atmospheric science Climate-change mitigation Short-lived climate-forcing pollutants (SLCPs), such as black carbon (BC) and ozone, are substances that affect both air quality and climate. As the name suggests, they remain in the atmosphere for only short periods, that is, weeks or even days, and so their impact on climate can be mitigated almost instantaneously. Quantifying the warming impact of SLCPs is needed to aid quick and effective mitigation strategies and to slow warming as soon as possible. This is highly relevant to the Arctic, a region particularly susceptible to climate change, where warming is occurring twice as fast as the global average1. Writing in Nature Climate Change, Maria Sand and colleagues 2 show that global emissions of BC and ozone precursors — chemical compounds that react with sunlight to form ozone — cause Arctic warming of currently about 0.5 °C.
    [Show full text]
  • Arctic Report Card 2020 the Sustained Transformation to a Warmer, Less Frozen and Biologically Changed Arctic Remains Clear
    Arctic Report Card 2020 The sustained transformation to a warmer, less frozen and biologically changed Arctic remains clear DOI: 10.25923/MN5P-T549X R.L. Thoman, J. Richter-Menge, and M.L. Druckenmiller; Eds. December 2020 Richard L. Thoman, Jacqueline Richter-Menge, and Matthew L. Druckenmiller; Editors Benjamin J. DeAngelo; NOAA Executive Editor Kelley A. Uhlig; NOAA Coordinating Editor www.arctic.noaa.gov/Report-Card How to Cite Arctic Report Card 2020 Citing the complete report or Executive Summary: Thoman, R. L., J. Richter-Menge, and M. L. Druckenmiller, Eds., 2020: Arctic Report Card 2020, https://doi.org/10.25923/mn5p-t549. Citing an essay (example): Frey, K. E., J. C. Comiso, L. W. Cooper, J. M. Grebmeier, and L. V. Stock, 2020: Arctic Ocean primary productivity: The response of marine algae to climate warming and sea ice decline. Arctic Report Card 2020, R. L. Thoman, J. Richter-Menge, and M. L. Druckenmiller, Eds., https://doi.org/10.25923/vtdn-2198. (Note: Each essay has a unique DOI assigned) Front cover photo credits Center: Yamal Peninsula wildland fire, Siberia, 2017 – Jeffrey T. Kerby, National Geographic Society, Aarhus Institute of Advanced Studies, Aarhus University, Aarhus, Denmark Top Left: Large blocks of ice-rich permafrost fall onto the beach along the Laptev Sea coast, Siberia, 2017 – Pier Paul Overduin, Alfred Wegner Institute for Polar and Marine Research, Potsdam, Germany Top Right: R/V Polarstern during polar night, MOSAiC Expedition, 2019 – Matthew Shupe, Cooperative Institute for Research in Environmental Sciences, University of Colorado and NOAA Physical Sciences Laboratory, Boulder, Colorado, USA Mention of a commercial company or product does not constitute an endorsement by NOAA/OAR.
    [Show full text]