SCOR Working Group 145 (SCOR WG 145): "Modelling Chemical Speciation in Seawater to Meet 21st Century Needs" kindly asks the marine and freshwater chemistry community to fill out a web-based questionnaire to help generate a set of requirements for chemical speciation modelling tools (encompassing pH, the carbonate system, and nutrient availability and toxicity) which are being developed for marine scientists and businesses by the SCOR WG145. This survey is primarily targeted at non-academic scientists and other users. 

The 2018 Ocean Sciences Meeting (OSM) will take place 11–16 February 2018 in Portland, Oregon. This meeting is co-convened by the American Geophysical Union (AGU), the Association for the Sciences of Limnology and Oceanography (ASLO), and The Oceanography Society (TOS). Session proposals and tutorial abstracts for 2018 OSM are due 3 May 2017, 11:59 P.M. ET. Abstract submissions will open 12 July 2017 and close 6 September 2017.

We would like to let you know that the Biogeochemical-Argo program has issued its 2^nd Newsletter which highlights the main activities over the last four months. The Biogeochemical-Argo communities are currently expanding and organizing themselves at a national level. Official inauguration meetings were held in Canada and Australia. Many other events (past and upcoming) are reported in this issue. Among several interesting articles there is a Biogeochemical-Argo presentation given by Hervé Claustre at the 12^th IOCCP SSG meeting in February 2017, and an announcement for today's GOOS webinar on Biogeochemical-Argo (April 19, 2017) presented by Ken Johnson. The webinar starts at 15:00 GMT/UTC, and can be accessed directly from HERE.

You can subscribe to receive future issues of the Biogeochemical-Argo newsletter via this link.

We would like to let you know that the North Pacific Marine Science Organization (PICES) is holding its 26^th annual meeting on Environmental Changes in the North Pacific and Impacts on Biological Resources and Ecosystem Services, which will take place on September 21 - October 1, 2017, in Vladivostok, Russia. PICES-2017 organizers invite submissions related to characterizing and understanding drivers of North Pacific ecosystem change and their impacts to, and resilience of, ecosystem resources and services. Drivers may include but are not limited to climate change, ocean acidification, coastal eutrophication, aquaculture, fishing, pollution, coastal development, non-indigenous species, and cumulative impacts of multiple stressors.

Abstract submission deadline: 1 June 2017.

We would like to encourage you to take advantage of some exciting opportunities to engage with the global ocean acidification community today. First, you can visit the Ocean Action Hub online forum for ocean acidification discussions in advance of the UN Ocean Conference on SDG-14. Second, visit the Global Ocean Acidification Observing Network (GOA-ON) portal and contribute your ocean acidification monitoring assets. Third, take a look at the 3^rd GOA-ON workshop Summary for Policymakers to get an overview of ongoing global and regional network activities. Last but not least, consider becoming a mentor or mentee through GOA-ON's Pier2Peer program. 

We would like to let you know that there will be a theme dedicated to "Chemistry of ocean (past, present and future)" at the upcoming Goldschmidt 2017 Conference, held on 13-18 August 2017 in Paris, France. Abstract deadline is: 1 April 2017.

We would like to let you know that a SOLAS workshop on 'Frontiers in ocean-atmosphere exchange: Air sea interface and fluxes of mass and energy' will take place on 15-19 May 2017 at the Institut d'Études Scientifiques de Cargèse in Corsica, France. Due to the limited capacity of the venue, the workshop can accommodate a maximum of 50 people. Abstract submission deadline: 31 March 2017.

The First Report of the Tropical Pacific Observing System (TPOS 2020) project was published on 30 December 2016. This report contains initial recommendations for the Backbone and a synopsis of initial results and plans for the various initiatives of TPOS 2020. The Executive Summary and the full First Report can be downloaded from the tpos2020.org website or from the GOOS Report site.

The Partnership for Observation of the Global Oceans (POGO) is pleased to announce that the POGO-SCOR Visiting Fellowship programme for 2017 is now open for applications. The deadline for applications is 7 April 2017. The scheme is designed to promote training and capacity building leading towards a global observation scheme for the oceans, and is aimed at scientists, technicians, postgraduate students (preferably PhD) and post-doctoral fellows involved in oceanographic work at centres in developing countries and countries with economies in transition.

The 19^th WMO/IAEA Meeting on Carbon Dioxide, Other Greenhouse Gases, and Related Measurement Techniques (GGMT-2017) will be held on 27 – 31 August 2017 at Empa in Dübendorf, Switzerland. The meeting will be held back-to-back with the 10^th International Carbon Dioxide Conference (ICDC10), Interlaken, Switzerland.

Registration and abstract submission opens in April 2017.