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a core project of
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The CliC leadership is composed of many leading experts in the cryosphere and climate research fields who dedicate their time to international efforts. These include the CliC Co-Chairs, the Scientific Steering Group (SSG) members, the WCRP Joint Science Committee Liaisons, and Joint Planning Staff officer (in charge of CliC), the targeted activity, working group, forum and project leaders, the International Project Office and the CliC Fellows. This group comes together yearly at the CliC SSG meetings, and communicates intersessionally via email and online meetings.

CliC Scientific Steering Group

SSG11GroupPhotoA group of selected scientists - the CliC Scientific Steering Group (SSG) - has the overall responsibility for planning and guiding the CliC project. Its members are appointed by the Joint Scientific Committee (JSC) of the World Climate Research Programme, based on recommendations by the CliC SSG. The Chair (or Co-chairs) is responsible for recommending changes in SSG membership to the JSC. Initial membership is for four years and, as a rule, up to two extensions of two years each may be recommended for members. For co-chairs, a one year extension as a member is possible. The SSG usually meets once a year.


James Renwick (Co-Chair, 1/2017-12/2019, WCRP Joint Scientific Committee Liaison 1/2013-12/2016)

James RenwickI am a professor of physical geography at Victoria University of Wellington, New Zealand. My career has included a decade in research at the NZ Met. Service, and 20 years of climate research at NIWA. I am fascinated by the general circulation of the atmosphere – how the atmosphere transports energy and momentum and what it does to achieve this. In particular I am interested in how heating in the tropics is communicated to higher latitudes by the excitation of large-scale waves and how this affects the storm tracks, jet streams, and the location and frequency of long-lived ‘blocking’ anticyclones. In recent years I have developed an interest in Antarctic climate, especially the growth and decay of Antarctic sea ice. How does the atmospheric circulation (the wind) affect sea ice extent and how this can be tied back to tropical influences? Beyond these topics, I have a general background in atmospheric physics, plus mathematics and statistics and have broad interests most aspects of climate, from the distant past to the near future. This includes paleoclimate reconstruction, synoptic climatology, climate modelling, climate change, and the use of statistical and matrix techniques to analyse large data sets. I served as a lead author for the IPCC 4th and 5th Assessment Reports, in Working Group I (physical science) and am chair of the Royal Society of New Zealand Climate Expert Panel. Contact info: James.Renwick[@]vuw.ac.nz

Fiamma Straneo (Co-Chair, 1/2018-12/2020)

FiammaStraneo smallFiamma Straneo is a Professor in Polar Climate and Oceans at the Scripps Institution of Oceanography of the University of California San Diego. Prior to joining Scripps, she was a Senior Scientist at the Woods Hole Oceanographic Institution. She studies the high latitude North Atlantic and Arctic Oceans and their interaction with the atmosphere, sea-ice and the Greenland Ice Sheet. Much of her research has focused on obtaining and interpreting data from the challenging regions at the glaciers’ margins using a variety of platforms such as icebreakers, fishing vessels, helicopters, snowmobiles and autonomous vehicles. Straneo has led over a dozen field expeditions to the Arctic and Greenland.

Straneo is a fellow of the Leopold Leadership Program, co-chair and founder of the Greenland Ice Sheet/Ocean Science Network (GRISO), a member of the Atlantic Meridional Overturning Circulation Science Team and of the ASOF (Arctic-Subarctic Ocean Fluxes). She received the Sverdrup Award by the Ocean Sciences Section of the American Geophysical Union in 2016. Straneo obtained her Ph.D. in Physical Oceanography from the University of Washington, USA, following a Laurea cum Laude in Physics from the University of Milan, Italy.

Hiroyuki Enomoto (1/2016-12/2019)

HiroyukiEnomotoHiroyuki Enomoto is the director of the Arctic Environment Research Center (AERC) of the National Institute of Polar Research (NIPR) in Japan, and professor at the Graduate University for Advanced Studies. Since 2014, he has been vice director-general of NIPR. He received his PhD at the ETH Zurich in 1989, on physical geography on sea ice and climate relationships. His research area focuses on climatological investigations of snow and ice of ocean, land and ice sheet in the Arctic, Antarctic and snow cover area in the middle latitudes. Using satellite microwave remote sensing and visiting polar snow and ice field, he is widely scanning changing cryosphere. His first visit to a glacier was in Patagonia in 1981.Since then, he has worked in many cold regions. He visited Svalbard by opening Japanese Arctic research station, and also Dome Fuji Antarctica in order to start up a new Antarctic inland station, drilling site, and AWS monitoring. He has joined Japanese, Australian and Swedish Antarctic Expeditions. In the Arctic, he has worked often in Alaska as the collaborator of IARC/UAF and Japanese project on linkage of land-sea ice processes. Since 2011, he has been working as the leading member of the Japanese Arctic research project, and also on international cryospheric and Arctic meetings. He is  keen to seek for the scientific frontiers of the cryosphere, and collaborations in international polar expeditions and in community work as well.

Stephen Hudson (1/2016-12/2019)

StephenHudsonStephen Hudson is a research scientist at the Norwegian Polar Institute (NPI). His work focuses on processes in the polar atmosphere that impact the energy budget of ice and snow surfaces. Since beginning at NPI in 2008, Hudson has worked in the Arctic, primarily on sea ice in the Arctic Ocean, but now also on land and glaciers in Svalbard. His main interests are processes affecting the radiation budget of the surface, including those related to clouds and to surface properties, and processes driving turbulent heat fluxes in the polar atmospheric boundary layer. Before coming to NPI in 2008, Hudson completed his MS and PhD at the University of Washington, where he focused on the atmospheric boundary layer and solar radiation on the Antarctic Plateau. He works extensively on collecting and using field data with a variety of methods, and also uses radiative transfer and other process models to better understand the observations and processes.

Alexandra Jahn (1/2014-12/2018)

Alexandra Jahn is a Climate Scientist at the National Center for Atmospheric Research (NCAR). Alexandra was a Postdoctoral fellow in NCAR’s Advanced Study Program from 2010-2012, and is currently working at NCAR as a Project Scientist. Prior to her arrival at NCAR, Alexandra earned a PhD in Atmospheric and Oceanic Sciences from McGill University in Montreal, Canada, in 2010 and a Diplom degree in Meteorology from the Free University of Berlin in Germany in 2004. She also studied Atmospheric Sciences as an exchange student at the University of Washington in Seattle, USA, from 2001-2002.

Alexandra’s research has focused on questions related to Arctic sea ice decline, the impact of Arctic sea ice and freshwater changes on the meridional overturning circulation, the dynamics of Arctic freshwater, and the climate of the last glacial period. In her research, Alexandra uses climate models in combination with observational datasets to study the dynamics of the Arctic climate system. Alexandra also enjoys sharing her knowledge of climate science with the public and has worked with the Education and Outreach Program at NCAR to help educate teachers and the public about climate research. As steering committee member of CliC, Alexandra hopes to help improve the usefulness and quality of multi-model comparisons of Arctic climate simulations and of model-data comparisons in the Arctic. Contact info:

Shichang Kang (1/2015-12/2019)

Shichang KangDr. Shichang Kang is a Professor and Director of the State Key Laboratory of Cryospheric Sciences, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences (CAS). Dr. Kang has been awarded the "Talent Project" of CAS and National Science Foundation of China for Distinguished Young Scholars. He has been a PI or co-PIs for more than 40 projects, and has organized more than 30 expeditions in the Tibetan Plateau including several 7000+ meter expeditions. He has supervised more than 20 PhD and Master students. Dr. Kang is the associate editor of Atmospheric Research, and a member of Education and Capacity Building of IUGG. Dr. Kang mainly focuses on glacier and climate changes, environmental chemistry of snow/ice and atmosphere, and paleo-climate and environmental variability recovered by ice core records in the Tibetan Plateau. He has published more than 300 peer-reviewed papers, with more than 150 papers published in international journals.

Sebastian Mernild (1/2014-12/2018)

Sebastian H. Mernild has achieved a master degree in 2001 and a PhD. degree in 2006 in climate change, glaciology, and hydrology from University of Copenhagen, Denmark. In 2002 he was awarded the University of Copenhagen Silver Medal for a Price Dissertation in Physical Geography.

He is Full Professor in Climate Change and Glaciology at the Faculty of Engineering and Science, Sogn og Fjordane University College, Sogndal, Norway, and Director for Antarctic and Subantarctic Programs, Universidad de Magallanes, Punta Arenas, Chile.

Before, he worked six years in the US at the International Arctic Research Center, University of Alaska Fairbanks, and at Los Alamos National Laboratory, New Mexico. He works with climate change in Greenland and the effect on the ice cap and glaciers related to mass change and freshwater runoff. In addition, he works with remote sensing and 'state of the art' snow and glacier modeling tools, modeling the ice sheet and glaciers in past, present, and future time perspectives.

His research has been focusing on local, regional, and global modeling using a wide variety of atmospheric and terrestrial models and observations with a specific focus on understanding and simulating land-atmosphere interactions related to snow, glacier ice, and freshwater runoff. Develop and implement methodologies to allow these models to efficiently and realistically perform annual integrations, and seasonal to daily evolution of snow cover distributions, glacier and ice cap surface and dynamic processes, and hydrologic processes. Use these models to perform simulations in support of snow-ice-water-atmosphere interaction studies.

He has several times been a visiting scientist at Colorado State University, University of Colorado at Boulder, New York University, USA, Hokkido University, Japan, and participated in courses at the University Center in Svalbard, Norway.

He has been co-author on different international reports e.g., the annual Arctic Report Card from NOAA, and he is a contribution author on the upcoming IPCC AR5 report. Further, he is the Danish representative of the International Commission on Snow and Ice Hydrology (ICSIH), under International Association of Hydrological Sciences (IAHS).

He has communicated his interest and knowledge about climate change and its effect on snow, ice, and hydrological conditions in the Arctic region in both international peer-reviewed scientific journals, in newspapers, radio, and TV, and in the form of conference presentations.

Private Mernild is also trained Captain in the Danish Army, and have served in both Kosovo (2002) and Afghanistan (2006). Contact info:

Lars H. Smedsrud (1/2016-12/2019)

LarsH 2015Lars H. Smedsrud is a professor at the Geophysical Institute, University of Bergen, Norway. He is co-leading one of the research groups at the Bjerknes Centre for Climate Research, and a professor II at University University Centre in Svalbard. Smedsrud did his PhD in March 2000 in physical oceanography, and the thesis was written on frazil ice formation and sediment entrainment in polar waters. Presently Smedsrud teaches courses at the Batchelor level on Descriptive Oceanography, and the master level in Polar Oceanography. He is a also a coordinator of Arctic ECRA (European Climate Research Alliance). Previously Smedsrud worked with different aspects of ice formation in the Arctic, and ice shelves in Antarctica. Smedsrud has a wide field experience from Antarctica and the Arctic, has been cruise leader in the International Polar Year project – Bipolar Atlantic Thermohaline Circulation, participated in several international laboratory experiments, and worked with a number of numerical models. Among active research topics are polynya dynamics on Svalbard, formation and melt of sea ice in the Arctic Ocean, and transport of oceanic heat by Atlantic water.

Dario Trombotto Liaudat (1/2016-12/2019)

DarioTrombotto in SiberiaDario is a Geologist, at the Universidad Nacional de Córdoba, in Argentina. He is pecialized on South American Geocryology of passed and present periglacial environments. He received his Doctoral thesis at the University of Heidelberg,in Germany in 1988. Since 1989, Dario has been a researcher of the Argentine National Research Council CONICET.1989-94 in Pto. Madryn, Patagonia. Since 1994, he has been at the IANIGLA, Mendoza and he is the head of the Dpt.of Geocryology. Between 1998 and 2003, DAirio was a full Member of the IGU Permafrost Working Group. He is the IPA Representative of South America and the founder of the Argentine and South American Association of Permafrost. Dario is also an International WMO contact. He cooperates with the Spanish terminology group for the Geocryology University of Calgary. He is a guest researcher of the Humboldt Universität zu Berlin since 2002 and he was nominated international contact for Geomorphology in 2007, and at the Sapporo University, in 2003. He was nominated for the Executive Committee of the „International Permafrost Association“. Dario was also invited by the UNEP “Global Outlook on Ice and Snow” to Mexico City, in 2008. He was elected IGU Co-Chair for the Working Group „Cold Regions Environments“. Elected President of the Sub-Committee of Cryospheric Sciences (IACS and IUGG) in Argentina. Dario was invited to the “Ninth International Conference on Permafrost”, in Fairbanks, Alaska. He gave lectures on South American Geocryology and was a mentor of the Permafrost Young Researcher Network in Siberia 2011. Dario has been a member of the commission for institutional coordination of the Argentine inventory of glaciers and permafrost rich in ice since 2013. He is a member of the Standing Committee on Education and Outreach as well as the National Representative for the GLOBAL CRYOSPHERE WATCH (GCW) and CryoNet South America. He has recentøy co-authored the book: Terminological Guide of the South American Geocryology.

Mauricio M. Mata - WCRP Joint Science Committee Liaison (2014 - )

Mauricio Mata is Associate Professor of Physical Oceanography at the Federal University of Rio Grande-FURG, Rio Grande, Brazil, where he has been since 1992. He received his PhD in Oceanography at the Flinders University of South Australia, in Adelaide, working jointly at the CSIRO Marine Labs in Hobart, Australia. His research interests and teaching activities have been associated with physical oceanography, modelling and remote sensing of meso/large-scale oceanic processes in the South Atlantic, South Pacific and Southern Oceans. He has been deeply involved in water mass analysis and western boundary currents research, including remote sensing and in-situ expeditions to several open ocean environments. Most of his work uses observations spanning from in-situ classical methods to satellite remote sensing. Prof. Mata has participated in several expeditions to the Southern Ocean and is currently interested in Southern Ocean dense water mass formation and export; long-term trends and hydrographic variability around Antarctica; the South Atlantic and Southern Ocean contribution to the Meridional Overturning Circulation; and Paleoceanography. Currently, he is a member of the World Climate Research Programme (WCRP) Joint Science Committee, part of the Southern Ocean Observing System (SOOS) Science Steering Committee, deputy chair of the Brazilian National Institute for Cryospheric Research (INCdiT-Criosfera) and full member of the Brazilian National Committee for Antarctic Research (CONAPA). 

end current members


Past Steering Group Members (2000-2017)
Gerhard Krinner 2013-2017 (Co-Chair)
Margareta Johansson 2015-2017
Rob Massom 2013-2017
Tatiana Pavlova 2015-2017
Greg Flato 2013-2016 (Co-Chair)
Dorthe Dahl-Jensen 2013-2016
Larry Hinzman 2013-2015
Peter Lemke 2013-2015
Nalân Koç 2013-2015
Tetsuo Ohata 2013-2015
Alexander Klepikov 2013-2015
Helmut Rott 2009-2014
Cunde Xiao 2009-2014
Annette Rinke 2008-2013
Vladimir Romanovsky 2008-2013
Koni Steffen 2006-2012 (Chair 2008-2012)
Sebastian Gerland 2009-2012
David Bromwich 2009-2012
Ayako Abe-Ouchi 2009-2012
Gino Casassa 2006-2012 (Vice-Chair 2008-2012)
Terry Prowse 2008-2011
Vladimir Kattsov 2007-2011
Anthony Worby 2005-2011 (Vice-Chair 2007-2011)
Mark Drinkwater 2001-2008
Barry Goodison 2000-2008 (Chair 2003-2008)
Dahe Qin 2001-2008
Tetsuo Ohata 2001-2008 and 2012-2015
John Turner 2003-2008
Thierry Fichefet 2000-2007
Vladimir Kotlyakov 2001-2007
Cecilie Mauritzen 2004-2007
Douglas Kane 2003-2006
H. Jay Zwally 2001-2006
Ian Allison 2000-2005 (Vice-Chair 2000-2005)
Roger Barry 2000-2005 (Vice-Chair 2000-2005)
Howard Cattle 2000-2003 (Chair 2000-2003)
Eberhard Fahrbach 2000-2003
Peter Jones -2000
Humphrey Melling -2000
Thomas McClimans -2000
Takatoshi Takizawa -2000
Valery Vuglinsky -2000
end of Past Steering Group Members (2000-2013)