The Joint SCOR/IAPWS/IAPSO Committee on the Properties of Seawater (JCS) is a permanent group with limited membership whose purpose is to act as an international "point of contact" for seawater questions. It is jointly sponsored by organizations directly concerned with the properties of seawater: the Scientific Committee on Oceanic Research, the International Association for the Properties of Water and Steam, and the International Association for the Physical Sciences of the Ocean.
JCS acts as a permanent source of expertise to its parent organizations, maintains a repository of knowledge and software for the scientific community (via a web-site, www.teos-10.org), and is also a conduit for any desired communications between its parents, and out to other international organizations like the BIPM (Bureau International des Poids et Mesures), the WMO (World Meteorological Organization), and IUPAC (International Union of Pure and Applied Chemistry). In addition, JCS may from time to time summarize progress in seawater-related issues to the community at large, and suggest areas where gaps exist in the available knowledge.
Chair: Rich Pawlowicz, University of British Columbia, Dept. of Earth, Ocean and Atmospheric Sciences, Canada
Vice-Chairs: Rainer Feistel, Leibniz-Institute for Baltic Sea Research, Germany; Steffen Seitz, Physikalisch-Technische Bundesanstalt (PTB), Germany
Salinity/Density - Chair: (Pawlowicz), (Seitz), H. Uchida, F. Millero, S. Weinreben, Y. Pang, R. Woosley, Y. Kayukawa
pH - Chair: A. Dickson, M.F. Camoes, D. Stoica, S. Clegg, F. Bastkowski
Moist Air - Chair: O. Hellmuth, J. Lovell-Smith, (Feistel), S. Bell
• Thermodynamics (Feistel)
• Numerical modelling and applications T. McDougall
• Software P. Barker
• Industry B. Laky/Anton Paar, R. Williams/OSIL
TEOS-10 in Wikipedia: https://en.wikipedia.org/wiki/TEOS-10
The IAPSO Commission on Mean Sea Level and Tides (CMSLT) aims to support research into applications of sea level measurements. In addition to sponsoring meetings, the CMSLT is the body that the Permanent Service for Mean Sea Level formally reports to.
The CMSLT has always had a policy of considering as members any researchers who express interest in the topics of mean sea level and tides.
President: Gary T. Mitchum, University of South Florida, USA
Contact: to get in touch with the CMSLT write to
The IUGG Tsunami Commission (IUGG/TC) is an Inter-Association Commission responsible for international coordination of tsunami related meetings, research, and publications. It is jointly sponsored by IASPEI, IAPSO and IAVCEI and was established at the 12th General Assembly of IUGG in Helsinki, Finland in 1960 to promote the exchange of scientific and technical information about tsunamis.
The IUGG/TC membership comprises an international group of scientists concerned with various aspects of tsunamis, including an improved understanding of the dynamics of generation, propagation and coastal run-up and the consequences to society of the tsunami hazard.
IUGG Tsunami Commission website contains the current information about the Commission activities and upcoming meetings.
Chair: Yuichiro Tanioka, Japan
Vice-Chairs: Maria Ana Baptista, Portugal; Diana Greenslade, Australia; Alexander Rabinovich, Russia
Secretary: Mohammad Heidarzadeh, Iran/UK
Contact: to get in touch with the Tsunami Commission write to
Ocean-driven ice melt is the largest driver of dynamic ice loss from the Antarctic Ice Sheet, and is projected to increase in both Antarctica and Greenland under sustained climate warming. In addition to contributing to global sea level rise, the injection of polar meltwater into the ocean will have broad-scale impacts on ocean circulation and heat content, air-sea exchanges, and ecosystems. However, a paucity of long-term ocean and ice state observations constrains characterisation of the processes of ice-ocean exchange. This in turn limits our capacity to accurately represent ocean-driven ice melting in numerical ocean and ice sheet models that are used to project scenarios of climate and Earth systems change.
JCIOI aims to address these knowledge gaps, by globally coordinating and engaging in research and development related to understanding, observing and modeling ice-ocean interactions. This will include research under ice shelves, at the ice-ocean front in tidewater glaciers, and at the sea surface in the marginal ice zone. JCIOI will develop ties with international working groups to exchange knowledge and engage with the wider ice-ocean research community. Key activities will include development of a framework to reconcile numerical model estimates of ocean-driven ice mass loss with observations, to engage with groups developing broad-scale observational networks in Antarctica and Greenland, and to facilitate improvement of the representation of ice-ocean interactions in numerical models.
Chairs: Felicity McCormack (IAPSO) and Isabel Nias (IACS).
Contacts: For more information on how to contribute, please contact Dr McCormack (
To promote the study of the oceans and the interactions that take place at its boundaries with the sea floor, coastal environment and atmosphere, through the use of physics, chemistry, mathematics and biogeochemisty.
IAPSO gives importance to involving scientists and students from developing countries in oceanographic activities.