NASA GISS: Non-CO2 Air Pollution and Arctic Climate Impacts: A Workshop

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Non-CO₂ Air Pollution and Arctic Climate Impacts: A Workshop

Held January 8-9, 2007, at the NASA Goddard Institute for Space Studies, New York, N.Y.

The theme of the workshop was to examine what is understood about the role of non-CO₂ pollutants in the Arctic, to identify what additional research is needed to better describe and quantify impacts, and to identify what further information will be needed to support a dialogue with policy makers about strategies to abate the influence of non-CO₂ pollutants.

Agenda and Presentations

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Download Workshop Agenda PDF (102 kB)

Go to Day 1, Day 2

Day 1, January 8

8:30 - Registration, coffee
9:00 - Welcome

Jim Hansen (Director, NASA/GISS): Why the Arctic is at Risk and Why Non-CO₂ Pollutants Could be Making a Big Difference?
— Presentation PDF (685 kB) or PPT (946 kB)
Armond Cohen and Ellen Baum (Clean Air Task Force): Agenda review and structure of the meeting
— Presentation PDF (219 kB) or PPT (404 kB)

9:30 - Deposition: Black Carbon, Report from the Field. What we know from 2006 field season BC and albedo measurements from Canadian and Greenland measurements

Steve Warren (Univ. Washington)
— Presentation PDF (2.3 MB) or PPT (7.0 MB)
Antony Clarke (Univ. Hawaii)
— Presentation PDF (2.7 MB) or PPT (8.2 MB)
Tom Grenfell (Univ. Washington)
— Presentation PDF (4.6 MB) or PPT (11.7 MB)

10:00 - Terje Berntsen (CICERO): Other BC Albedo Effects Snow Measurements
— Presentation PDF (2.0 MB) or PPT (8.9 MB)
10:15 - Discussion
10:45 - Break
11:00 - Trish Quinn (NOAA/PMEL): Arctic Haze: Trends in Aerosol Chemical Species, Scattering, and Absorption
— Presentation PDF (2.6 MB) or PPT (4.0 MB)
11:15 - Andreas Stohl (Norwegian Institute for Air Research): Arctic Smoke
— Presentation PDF (3.8 MB) or PPT (19.8 MB)
11:30 - Moses Iziomon (Dalhousie Univ.): High Summertime Aerosol Burden in the Arctic: Sources and Radiative Effects
— Presentation PDF (1.0 MB) or PPT (4.1 MB)
11:45 - Discussion
12:15 - Lunch
1:15 - Ann Fridlind (NASA/GISS): Impacts of Aerosols on Clouds and Precipitation Processes, State of the Science
— Presentation PDF (2.9 MB)
1:30 - Lars Hole (Norwegian Institute for Air Research): Arctic Monitoring: The AMAP Assessment Report 2006: Trends in Acidifying Pollutants in the Arctic
— Presentation PDF (731 kB) or PPT (3.6 MB)
1:45 - Tim Garrett (Univ. Utah): Winter Warming in the Arctic from Mid-Latitude Particulates from Mid-Latitude Particulates
— Presentation PDF (1.5 MB) or PPT (774 kB)
2:00 - Drew Shindell (NASA/GISS): The Influence of Tropospheric Ozone on Arctic Climate
— Presentation PDF (6.4 MB)
2:15 - Arlene Fiore (NOAA/GFDL): Reducing tropospheric ozone with methane controls: Impacts on Arctic radiative forcing
— Presentation PDF (1.3 MB) or PPT (2.2 MB)
2:30 - Jim Crawford (NASA): The Arctic Research of the Composition of the Troposphere from Aircraft and Satellites (ARCTAS) mission
— Presentation PDF (1.3 MB) or PPT (7.1 MB)
2:45 - Chuck Brock (NOAA/ESRL): Vertical Structure of Arctic Haze
— Presentation PDF (824 kB) or PPT (1.7 MB)
2:50 - Discussion
3:00 - Break
3:30 - Discussion: What do the models tell us? Identifying the difference between transport to the Arctic and deposition.

Dorothy Koch (Columbia Univ & NASA/GISS)
— Presentation PDF (2.9 MB) or PPT (4.8 MB)
Sunling Gong (Environment Canada, AST)
— Presentation PDF (3.2 MB) or PPT (4.4 MB)
Mark Flanner (UC Irvine)
— Presentation PDF (1.5 MB) or PPT (1.3 MB)

4:30 - Discussion
6:00 - Reception and Dinner, Faculty Room, Low Library

Day 2, January 9

9:00 - Elisabeth Isaksson (Norwegian Polar Institute): Assessing Source Areas of Pollutants from Studies of Fly Ash, Charcoal, and Pollen from Svalbard Snow and Ice
— Presentation PDF (1.8 MB) or PPT (3.7 MB)
9:15 - Dean Hegg (Univ. Washington): Black Carbon Source Attribution from Collected Samples
— Presentation PDF (901 kB) or PPT (1.5 MB)
9:30 - Nancy Doubleday (Carleton Univ., Ottawa): Atlas of E. Arctic Combustion Particle Records and Distributions: A Paleoecological Perspective on Non-CO₂ Pollutants and Climate
— Presentation PDF (4.9 MB) or PPT (40.5 MB)
9:45 - Tami Bond (Univ. Illinois Urbana/Champaign): What Do We Know About Sources of Black Carbon?
— Presentation PDF (1.7 MB) or PPT (381 kB)
10:00 - Claire Granier (Service d'Aèronomie/IPSL, Paris): Surface Emissions from Future Ship Traffic in the Northern Passages
— Presentation PDF (1.0 MB) or PPT (1.2 MB)
10:15 - Discussion
10:45 - Break
11:00 - Discussion: (Led by Joe Chaisson and Armond Cohen, Clean Air Task Force)

Do we have the beginnings of a coherent "story" on sources, impacts and solutions? (a) Is there enough evidence to advocate reducing non-CO₂ pollutant emissions to help constrain Arctic snow and ice melting? (b) What is the relative contribution of each non-CO₂ pollutants to Arctic warming and melting? What pollutant emissions reductions would drive the most significant reduction in Arctic warming or melting?
What additional research is needed to fill out the story to support policy change? (c) Science (source identification, uncertainty reduction, etc.)? (d) Information to support policy analysis (assessment of control options, economics, etc.)?
What would such research cost and what are potential funding sources?
Does this group want to continue to interact on this topic, and, if so, how?