Source Data and Code for "Closing Gaps in Emissions Monitoring with Climate TRACE"

Source Data: Closing Gaps in Emissions Monitoring with Climate TRACE  

Here, we provide two datasets and the R code that support the findings within the discussion section of our paper titled "Closing Gaps in Emissions Monitoring with Climate TRACE ". The paper assesses the current landscape of global greenhouse gas (GHG) emissions datasets along key dataset characteristics and reveals several limitations. These limitations motivate the development of the Climate TRACE dataset, which we introduce by evaluating it along the dataset characteristics. Both datasets are provided in .csv format and originate from the Climate TRACE dataset. Detailed descriptions of the methodologies used to estimate GHG emissions are available here. 

In addition, we provide two supplementary data files, Data S1 and Data S2. Data S1, "Data_S1.xlsx"  provides each emissions subsector included in the Climate TRACE dataset and the equivalent Intergovernmental Panel on Climate Change (IPCC) sector(s).

"city_level_annual_ghg.csv" provides annual greenhouse gas (GHG) emissions totals for 2010-2024 for 500 cities around the world, along with their population and gross domestic product (GDP). The data were used to assess changes in annual emissions over time and whether GDP impacts these trends. See column name descriptions below. 

Column name 
Description
Units

iso3_country
country code
NA

gdp_year
year for which GDP is provided 
NA

gdp_value (billions)
GDP
billions of dollars

population_year
year for which population is provided 
NA

population_value
population
people

db_city_name
city name 
NA

gdp_per_capita
GDP/population
billions of dollars/person

city_id
unique city ID
NA

21_total_emissions
total GHG emissions for 2021
100 yr CO2e

24_total_emissions
total GHG emissions for 2024
100 yr CO2e

24_21_change_total
absolute change in GHG emissions from 2021 to 2024 
100 yr CO2e

rel.percent_change
relative percent change in GHG emissions from 2021 to 2024 
%

GDP_group
GDP category
Natural breaks was used to assign a GDP category (high/low) to each country and year

"ghg_timeseries_by_annex" provides annual emissions totals for Annex-1 (developed) versus non-Annex-1 (developing) countries 2015 to 2024. The data were used to investigate temporal emissions trends and whether UNFCCC status influences them. See column name descriptions below. 

Column name 
Description
Units

Year
Year for which annual emissions total is provided 
NA

Annex1
annual GHG emissions total for all Annex-1 countries 
100 ye CO2e

Non-Annex1
annual GHG emissions total for all Annex-1 countries 
100 ye CO2e

数据集来源：《依托Climate TRACE填补排放监测空白》

本研究提供两份数据集与R代码，用以支撑题为《依托Climate TRACE填补排放监测空白》的论文讨论章节中的研究发现。该论文围绕核心数据集特征，评估了全球温室气体（greenhouse gas, GHG）排放数据集的当前格局，并揭示了若干局限性。这些局限性推动了Climate TRACE数据集的研发，本文通过结合数据集特征开展评估对该数据集进行介绍。两份数据集均采用.csv格式，且均源自Climate TRACE数据集。用于估算温室气体排放的方法学详细说明可在此处获取。

此外，本研究还提供两份补充数据文件：Data S1与Data S2。其中Data S1即"Data_S1.xlsx"，列明了Climate TRACE数据集涵盖的各排放子行业，以及与之对应的政府间气候变化专门委员会（Intergovernmental Panel on Climate Change, IPCC）行业分类。

"city_level_annual_ghg.csv"收录了全球500座城市2010至2024年的年度温室气体排放总量，以及各城市的人口与国内生产总值（gross domestic product, GDP）。该数据集被用于评估年度排放随时间的变化趋势，以及GDP对该趋势的影响。各列名称的详细说明如下：

| 列名 | 说明 | 单位 |
|---------------------|----------------------------------------------------------------------|-------------------------------|
| iso3_country | 国家代码 | 无（NA） |
| gdp_year | GDP对应的统计年份 | 无（NA） |
| gdp_value (billions)| 国内生产总值 | 十亿美元 |
| population_year | 人口对应的统计年份 | 无（NA） |
| population_value | 人口数量 | 人 |
| db_city_name | 城市名称 | 无（NA） |
| gdp_per_capita | 人均GDP | 十亿美元/人 |
| city_id | 唯一城市标识符 | 无（NA） |
| 21_total_emissions | 2021年温室气体排放总量 | 百年尺度二氧化碳当量（100 yr CO2e） |
| 24_total_emissions | 2024年温室气体排放总量 | 百年尺度二氧化碳当量（100 yr CO2e） |
| 24_21_change_total | 2021年至2024年温室气体排放的绝对变化量 | 百年尺度二氧化碳当量（100 yr CO2e） |
| rel.percent_change | 2021年至2024年温室气体排放的相对百分比变化 | %（百分比） |
| GDP_group | GDP分类 | 采用自然间断点分级法为每个国家及年份划分高/低GDP类别 |

"ghg_timeseries_by_annex"收录了2015至2024年附件一（发达国家）与非附件一（发展中国家）缔约方的年度排放总量。该数据集被用于探究排放的时间变化趋势，以及《联合国气候变化框架公约》（United Nations Framework Convention on Climate Change, UNFCCC）缔约方身份对该趋势的影响。各列名称的详细说明如下：

| 列名 | 说明 | 单位 |
|---------------|----------------------------------------------------------------------|-------------------------------|
| Year | 年度排放总量对应的统计年份 | 无（NA） |
| Annex1 | 所有附件一缔约方的年度温室气体排放总量 | 百年尺度二氧化碳当量（100 yr CO2e） |
| Non-Annex1 | 所有非附件一缔约方的年度温室气体排放总量 | 百年尺度二氧化碳当量（100 yr CO2e） |