Abstract The ethnooceanographic knowledge can be understood as a body of information artisanal fishermen have acquired and developed from empiricism for perceiving and predicting conditions at the sea, which guarantee their safety. In this sense, the aim of the present study is to compare ethnooceanographic predictions from artisanal fishermen from the northern coast of Rio de Janeiro State, southeastern Brazil, with the official meteorological forecast from Brazilian institutes, identifying which one is more used by fishermen for their safety on board. From June to August 2018, we conducted 80 ethnographic interviews and compared their informations with predictions of the following institutes: National Institute of Meteorology (NIMET – Instituto Nacional de Meteorologia), the Weather Forecast and Climate Studies Center/National Institute for Space Research (WFCSC/NISR - Centro de Previsao de Tempo e Estudos Climaticos/Instituto Nacional de Pesquisas Espaciais) and the Hydrography and Navigation Board (HNB – Diretoria de Hidrografia e Navegacao). Official ethnooceanographic predictions related to ‘waves height’ were concordant in 42.5% (n = 34) and discordant in 57.5% (n = 46) to interviews. Predictions related to the ‘wind speed’ were concordant in 58.7% (n = 47) and discordant in 41.3% (n = 33) to the interviews. Regarding tides height, most fishermen (82.5%; n = 66) consider 1.2 m or more as ‘favorable to the fishery’, and lower than 1.0 m as ‘unfavourable to fishery’. In Brazil, ethnooceanographic predictions are more used by fishermen to assure their safety on board and the success for their fishery.

中文翻译：

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渔民民族海洋学预测与巴西官方天气预报的比较

摘要 民族海洋学知识可以理解为手工渔民从经验主义中获取和发展的信息体，用于感知和预测海上条件，保证他们的安全。从这个意义上说，本研究的目的是将巴西东南部里约热内卢州北部海岸手工渔民的民族海洋学预测与巴西研究所的官方气象预测进行比较，以确定渔民更多地使用哪个预测船上安全。从 2018 年 6 月到 8 月，我们进行了 80 次民族志访谈，并将他们的信息与以下机构的预测进行了比较：国家气象研究所（NIMET – Instituto Nacional de Meteorologia）、天气预报和气候研究中心/国家空间研究所 (WFCSC/NISR - Centro de Previsao de Tempo e Estudos Climaticos/Instituto Nacional de Pesquisas Espaciais) 和水文和导航委员会 (HNB – Diretoria de Hidrografia e Navegacao)。与“波浪高度”相关的官方民族海洋学预测与访谈的一致率为 42.5% (n = 34)，不一致率为 57.5% (n = 46)。与“风速”相关的预测在 58.7% (n = 47) 中一致，在 41.3% (n = 33) 中不一致。关于潮汐高度，大多数渔民（82.5%；n = 66）认为 1.2 m 或更高为“有利于渔业”，低于 1.0 m 为“不利于渔业”。在巴西，渔民更多地使用民族海洋学预测来确保他们在船上的安全和渔业的成功。