Although the notion of the Anthropocene has generated a great deal of literature across disciplines, the geographic critique of this concept is still developing. This article contributes to justice-oriented engagements with the Anthropocene by highlighting the relationships through which planetary knowledge is constructed as sites of critique. I develop an analytic of synoptic geographies, which addresses the praxis of coordinated field measurements that creates the planetary knowledge on which concepts of the Anthropocene rest. Synoptic geographies require a geographic analytic that is capable of going beyond assertions that all knowledge is local. The International Geophysical Year (IGY; 1957–1958) provides a strategic opportunity to elaborate the stakes of synoptic geographies. The IGY was arguably the first attempt to understand the Earth as a planet through a program of widespread synoptic data collection. In particular, the synoptic geographies of the IGY’s oceanography program reveal the ways in which old and new forms of imperialism were knitted together to produce the world ocean as an object of knowledge in a new era of planetary-scale environmental politics. Key Words: Anthropocene, geographies of science, International Geophysical Year, oceans, planetary knowledge.

尽管人类世的概念已经在各个学科领域产生了很多文献，但是对该概念的地理批评仍在发展中。本文通过强调将行星知识构建为批评场所的关系，为与人类世界的司法正义活动做出了贡献。我开发了一个天气学地理学分析方法，该方法解决了协调场测量的实践问题，该测量结果创建了人类世世所依赖的行星知识。天气地理要求进行地理分析，并且要能够断言所有知识都是本地的。国际地球物理年（IGY； 1957-1958）为阐述天气概况的重要性提供了战略机遇。IGY可以说是通过广泛的天气数据收集程序将地球理解为行星的第一次尝试。特别是，IGY海洋学计划的概要地理学揭示了新旧形式的帝国主义编织在一起的方法，从而在行星尺度环境政治的新时代产生了世界海洋，将其作为知识的对象。关键词：人类世，科学地理，国际地球物理年，海洋，行星知识。