The Global Calculator (GC) can be used to assess a wide range of climate change mitigation pathways. The GC is an accessible integrated model which calculates the cumulative emissions of a basket of the main greenhouse gases that result from a set of technological and lifestyle choices made at the global level and as defined by the user within a single system dynamics tool. Using the GC, we simulated ambitious scenarios against business as usual trends in order to stay below 2 °C and 1.5 °C of maximum temperature change by the end of this century and carried out a sensitivity analysis of the entire GC model option space. We show that the calculator is useful for making broad simulations for energy, carbon and land use dynamics, and demonstrate how combined and sustained mitigation efforts across different sectors are urgently needed to meet climate targets.

全球计算器（GC）可用于评估各种减缓气候变化的途径。GC是可访问的集成模型，可计算一篮子主要温室气体的累积排放量，这些累积温室气体排放量是在全球范围内并由用户在单个系统动力学工具中定义的一系列技术和生活方式选择产生的。使用气相色谱，我们针对惯常趋势模拟了雄心勃勃的情景，以期到本世纪末将最大温度变化保持在2°C和1.5°C以下，并对整个GC模型选项空间进行了敏感性分析。我们表明，该计算器可用于对能源，碳和土地利用动态进行广泛的模拟，