As the crisis of climate change affects more people every year and leads to more severe weather patterns with unprecedented socio-economical consequence, all actors on the planet need to understand their responsibility and contribute to solving this generational problem. To tackle this issue, individuals and corporations first need to assess their carbon footprint, which then represents the groundwork for the future implementation of significant changes required to reduce that footprint. We present the carbon emissions attributed to the Canada–France–Hawaii Telescope (CFHT) for the year 2019. We partnered with CarbonBuddy and followed their method to break down the greenhouse gas (GHG) emissions of various activities at CFHT for the entire year of 2019: air travel in and out of state, ground vehicle usage, electricity consumption, and other fossil fuel utilization. The total GHG emissions of CFHT for the year 2019 amount to about 749 tons of CO2 equivalent, which corresponds to more than 16 tons per employee. About 63% of the emissions are related to electricity usage at the summit facility, about 25% to out-of-state travel, about 6% to the use of our fleet of vehicles, and about 5% to electricity usage at headquarters. We show that significant improvements have occurred in the recent past at CFHT, with the installation of solar panels and a remarkable reduction in electricity consumption at headquarters. We list suggestions to further decrease the GHG emissions in the short to long term: offset current emissions by support local projects, invest in more efficient equipment, and establish environmentally friendly habits. The fundamental work presented will facilitate the official planning at CFHT for a drastic reduction in GHG emissions with the goal to meet the objectives laid out in the 2015 Paris Accord. It will also support the design of the Maunakea Spectroscopic Explorer (MSE), the future transformation of CFHT, and allow the project to seize this opportunity and incorporate the fight against climate change as one of its core missions. By choosing to implement those changes, CFHT and MSE can become part of the solution to climate change and lead the way, locally and in the world of astronomy.

中文翻译：

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估算CFHT的碳排放量：迈向更具可持续性的观测站的第一步

随着气候变化危机每年影响到更多的人，并导致更加恶劣的天气状况，带来前所未有的社会经济后果，地球上的所有行为者都需要了解自己的责任并为解决这一世代问题做出贡献。为了解决这个问题，个人和公司首先需要评估其碳足迹，这为将来实施减少碳足迹所需的重大变化奠定了基础。我们介绍了归因于加拿大-法国-夏威夷望远镜（CFHT）的2019年碳排放。我们与CarbonBuddy合作，并按照他们的方法来分解CFHT全年各种活动的温室气体（GHG）排放。 2019年：进出州的空中旅行，地面车辆的使用情况，用电量，和其他化石燃料的利用。2019年CFHT的温室气体总排放量约为749吨二氧化碳当量，相当于每名员工超过16吨。约63％的排放与峰会设施的用电量有关，约25％与州外旅行有关，约6％与我们的车队使用有关，约5％与总部的用电量有关。我们显示，CFHT近期有了显着改善，安装了太阳能电池板，并显着降低了总部的用电量。我们列出了从短期到长期进一步减少温室气体排放的建议：通过支持地方项目来抵消当前的排放，投资于更高效的设备，并养成环保的习惯。提出的基础性工作将促进CFHT的官方规划，以大幅减少温室气体排放，以期达到2015年《巴黎协定》中规定的目标。它还将支持Maunakea光谱浏览器（MSE）的设计，CFHT的未来改造，并使该项目抓住这一机会并将应对气候变化的斗争作为其核心任务之一。通过选择实施这些变化，CFHT和MSE可以成为解决气候变化问题的一部分，并在当地和天文学领域引领潮流。并允许该项目抓住这一机会，并将抗击气候变化纳入其核心任务之一。通过选择实施这些变化，CFHT和MSE可以成为解决气候变化问题的一部分，并在当地和天文学领域引领潮流。并允许该项目抓住这一机会，并将抗击气候变化纳入其核心任务之一。通过选择实施这些变化，CFHT和MSE可以成为解决气候变化问题的一部分，并在当地和天文学领域引领潮流。