Meeting Attendees: Please see the community announcement and thank you note The TPOS 2020 Workshop was held from 27-30 January 2014 at Scripps Institution of Oceanography in La Jolla, United States. The workshop was attended by 65 invitees from 13 countries and 35 institutes. There were various invited talks based on 14 whitepapers and 9 agency presentations and extensive time for discussion. The review committee was made up of the Scientific Organizing Committee plus three independent experts. The Terms of Reference for the review can be found within the list of supporting documents, whitepapers can be found in 'Report of the Tropical Pacific Observing System 2020 Workshop - Volume II' within the same list. Organizationally, it was recommended to establish a TPOS 2020 project. This would oversee the transition to a more resilient and integrated observing system to meet the identified gaps as well as future needs as they are identified. It was considered essential that the organizations interested in tropical Pacific observations maintain proper dialogue. The goals of the proposed TPOS 2020 project are: - To refine and adjust the TPOS to monitor, observe and predict the state of ENSO and advance scientific understanding of its causes. - To determine the most efficient and effective method for sustained observations to support prediction systems for ocean, weather and climate services of high societal and economic utility, including underpinning research. - To advance and refine the knowledge of the predictability horizon of the tropical Pacific variability (physical and biogeochemical), as well as its impacts in global climate. - To determine how interannual to multidecadal variability and human activities impact the relation between marine biogeochemistry and biology to carbon budgets, food security and biodiversity.