论文标题
二氧化碳排放的全球和区域变化：1970- 2019年
Global and regional changes in carbon dioxide emissions: 1970-2019
论文作者
论文摘要
我们引入了新的框架，以研究过去50年中50个国家的二氧化碳排放，人口趋势和经济模式的时空模式。我们的分析分为四个部分。首先，我们介绍了一种新方法，将国家分类为基于一个，两部分或三段分段线性模型的三个特征排放类之一。我们透露，大多数国家最能以一个变化点的分段线性模型来表示。接下来，我们对二氧化碳轨迹进行十年的研究。在那里，我们证明了每个十年中群集结构的显着变化。然后，我们研究了随着时间的流逝的空间传播，突出了2000年的空间分散峰值，除此之外，空间排放方差逐渐下降。最后，我们使用二氧化碳，GDP和人口数据，并根据其真实和碳经济的相似性，将降低和聚类应用于群体国家。
We introduce new frameworks to study spatio-temporal patterns in carbon dioxide emissions, demographic trends and economic patterns across 50 countries over the past 50 years. Our analysis is broken up into four sections. First, we introduce a new method to classify countries into one of three characteristic emissions classes based on a one, two or three-segment piecewise linear model. We reveal that most countries are best represented by a piecewise linear model with one change point. Next, we perform a decade-by-decade study of carbon dioxide trajectories. There, we demonstrate notable changes in cluster structures in each decade. We then study the spatial propagation of emissions over time, highlighting a peak in spatial dispersion in 2000, beyond which there has been a gradual decline in spatial emissions variance over space. Finally, we use carbon dioxide, GDP, and population data and apply dimensionality reduction and clustering to group countries based on similarity in their real and carbon economies.
