Estimating the Carbon Emissions of Remotely Sensed Energy-Intensive Industries Using VIIRS Thermal Anomaly-Derived Industrial Heat Sources and Auxiliary Data

被引:11
作者
Kong, Xiaoyang [1 ]
Wang, Xianfeng [2 ]
Jia, Man [2 ]
Li, Qi [1 ]
机构
[1] Peking Univ, Sch Earth & Space Sci, Beijing 100871, Peoples R China
[2] Shandong Prov Ecoenvironm Monitoring Ctr, Jinan 250101, Peoples R China
关键词
thermal anomalies; boosting regression tree; industrial carbon emissions; DBSCAN; Shandong Province; ACTIVE FIRE DETECTION; DIOXIDE EMISSIONS; CLIMATE-CHANGE; CO2; EMISSIONS; INVENTORY; PRODUCT; CONSUMPTION; POPULATION; IMPACT; LEVEL;
D O I
10.3390/rs14122901
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The energy-intensive industrial sector (EIIS) occupies a majority of global CO2 emissions, but spatially monitoring the spatiotemporal dynamics of these emissions remains challenging. In this study, we used the Chinese province with the largest carbon emissions, Shandong Province, as an example to investigate the capacity of remotely sensed thermal anomaly products to identify annual industrial heat source (IHS) patterns at a 1 km resolution and estimated the carbon emissions of these sources using auxiliary datasets and the boosting regression tree (BRT) model. The IHS identification accuracy was evaluated based on two IHS references and further attributed according to corporate inventory data. We followed a bottom-up approach to estimate carbon emissions for each IHS object and conducted model fitting using the explanatory strength of the annual population density, nighttime light (NTL), and relevant thermal characteristic information derived from the Visible Infrared Imaging Radiometer Suite (VIIRS). We generated a time series of IHS distributions from 2012 to 2020 containing a total of over 3700 IHS pixels exhibiting better alignment with the reference data than that obtained in previous work. The results indicated that the identified IHSs mostly belonged to the EIIS, such as energy-related industries (e.g., thermal power plants) and heavy manufacturing industries (e.g., chemistry and cement plants), that primarily use coal and coke as fuel sources. The BRT model exhibited a good performance, explaining 61.9% of the variance in the inventory-based carbon emissions and possessing an index of agreement (IOA) of 0.83, suggesting a feasible goodness of fit of the model when simulating carbon emissions. Explanatory variables such as the population density, thermal power radiation, NTL, and remotely sensed thermal anomaly durations were found to be important factors for improving carbon emissions modeling. The method proposed in this study is useful to aid management agencies and policymakers in tracking the carbon footprint of the EIIS and regulating high-emission corporations to achieve carbon neutrality.
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页数:24
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