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Global ocean observations are gradually shifting to autonomous observations for various variables from traditional ones such as ship and mooring. The Argo program has been extended from Core Argo to Deep, BGC, and Polar Argo missions, challenging to establish complementary relationships with other observations and missions. The purpose of this session is to introduce the ongoing related research projects of OneArgo, and to discuss the various observation and modeling communities, sharing results of knowledge future developments from many ocean observations each Argo mission such as Core Argo to Deep, BGC, and Polar Argo.
OneArgo, which involves all Argo missions, has been proposed as new Argo design in OceanObs19, and adopted by the UN Decade project, is moving toward efficient multivariate observations of the entire global ocean. It strongly enhances the mission to collaborate with other communities on other fields, observations, and models. For example, complementary observations are considered with the GO-SHIP project which conducts high-accuracy ship observations, and optimization of the observation network is discussed in collaboration with data assimilation teams such as SynObs. On the other hand, it is difficult to take the lead in all aspects due to the limitation of human and funding resources, therefore, it is necessary to make choices regarding ocean observations and developments in sciences and technologies, based on the strengths of each institute and researcher. Here, taking OneArgo as an example, we would like to help form a common understanding of the future development of new collaboration and research and development with young researchers and graduate students.