M. S. Olsen,^* T. V. Callaghan,^** J. D. Reist,^*** L. O. Reiersen,^**** D. Dahl-Jensen,^***** M. A. Granskog,^****** B. Goodison,^******* G. K. Hovelsrud,^******** M. Johansson,^********* R. Kallenborn,^********** J. Key,^*********** A. Klepikov,^************ W. Meier,^{*************} J. E. Overland,^{**************} T. D. Prowse,^{***************} M. Sharp,^{****************} W. F. Vincent,^{*****************} J. Walsh<sup>******************


*</sup>M. S. Olsen () is Programme Coordinator of the Danish Arctic Climate Support Fund (Danish Ministry of Climate and Energy) which supports climate change effect monitoring programmes primarily in Greenland. Since 2009, Mr. Olsen has served as vice-chair of the Arctic Monitoring and Assessment Programme Working Group and he has been chairing the SWIPA Integration Team. Address: Danish Energy Agency, Amaliegade 44, 1256 Copenhagen, Denmark, e-mail: mso@ens.dk
^**T. V. Callaghan is a Distinguished Research Professor at the Royal Swedish Academy of Sciences and Professor of Arctic Ecology at Universities of Sheffield, UK and Lund, Sweden. He specializes in arctic ecology, and climate and UV-B radiation impacts on arctic ecosystems. Address: Royal Swedish Academy of Sciences, 104 05 Stockholm, Sweden. e-mail: terry_callaghan@btinternet.com
^***J. D. Reist is a research scientist at Fisheries and Oceans Canada and works on northern fish ecology. Address: Fisheries and Oceans Canada, 501 University Crescent, Winnipeg, MB R3T 2N6, Canada. e-mail: Jim.Reist@dfo-mpo.gc.ca
^****L. O. Reiersen is the Executive Secretary for Arctic Monitoring and Assessment Programme (AMAP). He has for the last 20 years been planning and implementing significant Arctic monitoring and assessment programmes covering trends and effects of pollutants and climate change on Arctic ecosystems and humans. Address: AMAP, P.O. Box. 8100, 0032 Oslo, Norway, e-mail: lars-otto.reiersen@amap.no
^*****D. Dahl-Jensen is a professor at the University of Copenhagen, working on ice core records of climate, and the history and evolution of the Greenland Ice Sheet. Address: Niels Bohr Institutet, University of Copenhagen, 2100 Copenhagen, Denmark. e-mail: ddj@gfy.ku.dk
^******M. A. Granskog is a research scientist at the Norwegian Polar Institute, working on sea ice and ocean geophysics, especially radiative transfer, and biogeochemistry, especially dissolved organic matter, in the Arctic, Antarctic and sub-arctic sea ice zones. Address: Norwegian Polar Institute, Fram Centre, 9296 Tromsø, Norway. e-mail: mats.granskog@npolar.no
^*******B. Goodison retired from Environment Canada, serves as a scientific officer with the Observing and Information Systems Department of the World Meteorological Organization. He specializes in satellite and in situ cryospheric observation, particularly for snow and solid precipitation. He currently is involved in the development of WMO's Global Cryosphere Watch (GCW), and provides scientific support to WMO's Expert Panel on Polar Observations, Research and Services. He was a member of the SWIPA Integration Team. Address: World Meteorological Organization, 7 bis, Avenue de la Paix, Case Postale 2300, 1211 Geneva, Switzerland, e-mail: barrygo@rogers.com
^********G. K. Hovelsrud is Research Director at Nordland Research Institute, and Senior Researcher at CICERO (Center for International Climate and Environmental Research—Oslo). Her research interests include the interlinked consequences of climatic and societal change on social-ecological systems in the Arctic, studies of the determinants of adaptive capacity in local communities, how to integrate local/traditional knowledge in climate change research, and developments of methods and theories of adaptation, vulnerability and adaptive capacity across societal scales. Address: Nordland Research Institute, P.O. Box 1490, 8049 Bodø, Norway, e-mail: grete.hovelsrud@nforsk.no
^*********M. Johansson is a researcher at the Department of Earth and Ecosystem Sciences, Lund University and at the Royal Swedish Academy of Sciences, Stockholm, Sweden. She specializes in permafrost dynamics in relation to climate change and its impact on ecosystems. Address: Division of Physical Geography and Ecosystem Analyses, Department of Earth and Ecosystem Sciences, Lund University, Sölvegatan 12, 223 62 Lund, Sweden, e-mail: margareta.johansson@nateko.lu.se
^**********R. Kallenborn is a professor for organic analytical chemistry at the Norwegian University of Life Sciences (UMB), Department of Chemistry, Biotechnology and Food Sciences (IKBM). In addition he holds an adjunct professor position in Arctic Environmental Technology at the University Centre in Svalbard (UNIS). He is working with fate and distribution of persistent organic pollutants in Arctic environments. Address: Department of Chemistry, Biotechnology and Food Science (IKBM), Norwegian University of Life Sciences (UMB), Christian Magnus Falsen vei 1, Postbox 5003, 1432 Ås, Norway, e-mail: roland.kallenborn@umb.no
^***********J. Key is a research scientist with the U.S. National Oceanic and Atmospheric Administration's Satellite and Information Service, and is Chief of the Advanced Satellite Products Branch. He specializes in satellite remote sensing of snow, ice, and clouds in the polar regions. Address: NOAA/NESDIS, 1225 West Dayton Street, Madison, WI 53706, USA. e-mail: Jeff.Key@noaa.gov
^************A. Klepikov is a physical oceanographer who works as a senior scientist at the Arctic and Antarctic Research Institute in St. Petersburg, Russia. He is currently the head of Department for the Antarctic Oceanography and Climate Studies. His research interests include physical oceanography and modeling of the Arctic and Southern Oceans, polar climate dynamics. Address: Arctic and Antarctic Research Institute, 38 Bering Street, St. Petersburg, Russia 199397. e-mail: klep@aari.ru
^{*************}W. Meier is a research scientist at the National Snow and Ice Data Center, part of the University of Colorado, Boulder. His research interests include remote sensing of sea ice, changes in Arctic sea ice, and impacts of sea ice change on climate. Address: NSIDC, University of Colorado, 449 UCB, Boulder, CO 80309, USA. e-mail: walt@nsidc.org
^{**************}J. E. Overland is the Leader of the Coastal and Arctic Research Division, Pacific Marine Environmental Laboratory/NOAA, Seattle, Washington. His research interests include climate change, oceanography, fisheries, and changes in the Arctic environment. Address: Pacific Marine Environmental Laboratory, NOAA, Seattle, WA, USA. e-mail: James.E.Overland@noaa.gov
^{***************}T. D. Prowse is a senior Research Scientist with Environment Canada and a Professor in the Department of Geography at the University of Victoria. His research focuses on the effects of climate variability and change on cold-regions hydrology, hydro-climatology, and hydro-ecology. Address: Environment Canada, Victoria, BC, Canada. Address: Department of Geography, University of Victoria, Victoria, BC V8P 5C2, Canada, e-mail: terry.prowse@ec.gc.ca
^{****************}M. Sharp is chair of Earth and Atmospheric Sciences, where he is professor of glaciology working on polar ice caps and glaciers. Address: Earth and Atmospheric Sciences, University of Alberta, Edmonton, AB T6G 2E3, Canada, e-mail: martin.sharp@ualberta.ca
^{*****************}W. F. Vincent is a Professor of Biology and Canada Research Chair at Laval University, Canada, where he is also director of the Centre for Northern Studies (CEN), and member of the Takuvik Joint International Laboratory, Université Laval (Canada)—CNRS (France). He works on the effects of environmental change on polar aquatic ecosystems. Address: Département de Biologie & Centre d'Etudes Nordiques (CEN), Laval University, Quebec, QC G1V 0A6, Canada, e-mail: warwick.vincent@bio.ulaval.ca
^{******************}J. Walsh is a Research Professor at the International Arctic Research Center, University of Alaska, Fairbanks. His research interests include climate of the polar regions, Arctic climate change, severe weather, and the relationships between changes in climate and weather. Address: International Arctic Research Center, University of Alaska, Fairbanks, AK, USA. e-mail: jwalsh@iarc.uaf.edu