基于机器学习的预测环境CO2和CH4度在首尔大都市区的高时间分辨率
Seongjun Park1, Kwang-Joo Moon2, Hyo-Jin Eom2
1Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA.
Environmental pollution (Barking, Essex : 1987)
|May 4, 2025
概括
机器学习模型可以使用现有的空气质量数据来预测温室气体 (GHG) 水平. 一个组合模型显示,在城市地区的CO2和CH4估计表现最好.
科学领域:
- 环境科学 环境科学
- 数据科学数据科学数据科学
- 大气化学 大气化学
背景情况:
- 城市和工业区需要高分辨率的温室气体 (GHG) 监测.
- 部署广泛的传感器网络往往受到成本和运营挑战的限制.
- 现有的空气质量和气象数据提供了一个未充分利用的资源.
研究的目的:
- 开发和评估用于估计CO2和CH4度的机器学习模型.
- 利用常规收集的空气质量和气象数据,避免新部署温室气体传感器.
- 为了评估在首尔大都会地区的模型性能.
主要方法:
- 开发了三种机器学习模型:随机森林,长期短期记忆 (LSTM) 和集体学习.
- 使用现有的空气质量 (NO2,CO,O3) 和气象数据进行培训和评估.
- 功能重要性分析,以确定温室气体变化的关键预测因素.
主要成果:
- 集体学习模型在较低的错误指标下表现出比单个模型更好的性能.
- 二氧化 (NO2),一氧化碳 (CO),臭氧 (O3) 和温度被确定为重要的预测因素.
- 交叉验证证实了该模型的样本外预测能力.
结论:
- 机器学习,特别是组合方法,为温室气体监测提供了可扩展和具有成本效益的方法.
- 现有的空气质量数据可以用来估计城市工业地区的温室气体度.
- 模型性能受局部因素的影响,需要局部化上下文或转移学习来实现新的应用.
相关概念视频
Assessment of Diffusion and Perfusion
724
Understanding and evaluating diffusion and perfusion is critical in assessing a patient's respiratory and circulatory health. These processes play key roles in maintaining the body's internal environment, ensuring that tissues receive adequate oxygen while waste products are efficiently removed.
The Role of Diffusion in Respiration
Diffusion is the process by which molecules move from an area of higher concentration to an area of lower concentration. In the respiratory system, this...
The Role of Diffusion in Respiration
Diffusion is the process by which molecules move from an area of higher concentration to an area of lower concentration. In the respiratory system, this...
724
Predicting Reaction Outcomes
7.8K
Kinetics describes the rate and path by which a reaction occurs. In contrast, thermodynamics deals with state functions and describes the properties, behavior, and components of a system. It is not concerned with the path taken by the process and cannot address the rate at which a reaction occurs. Although it does provide information about what can happen during a reaction process, it does not describe the detailed steps of what appears on an atomic or a molecular level. On the other hand,...
7.8K
Prediction Intervals
2.2K
The interval estimate of any variable is known as the prediction interval. It helps decide if a point estimate is dependable.
However, the point estimate is most likely not the exact value of the population parameter, but close to it. After calculating point estimates, we construct interval estimates, called confidence intervals or prediction intervals. This prediction interval comprises a range of values unlike the point estimate and is a better predictor of the observed sample value, y.
However, the point estimate is most likely not the exact value of the population parameter, but close to it. After calculating point estimates, we construct interval estimates, called confidence intervals or prediction intervals. This prediction interval comprises a range of values unlike the point estimate and is a better predictor of the observed sample value, y.
2.2K
Predicting Molecular Geometry
33.9K
VSEPR Theory for Determination of Electron Pair Geometries
33.9K
Measurement of Air Content in Concrete
101
Air content measurement in concrete is critical for ensuring structural integrity and durability of concrete structures, especially in environments prone to severe weather conditions. Accurate air content analysis optimizes concrete's resistance to freeze-thaw cycles and enhances its workability and strength. Several methods are standardized under ASTM guidelines to measure the air content in fresh concrete, each suitable for different concrete types and conditions.
The pressure method,...
The pressure method,...
101
Chemical Factors Affecting Respiration Centers
939
Chemical factors such as changing CO2, O2, and H+ levels in arterial blood play a critical role in influencing respiration depth and rates. These variations are detected by chemoreceptors—specialized sensors located in two primary body areas. Central chemoreceptors are found throughout the brain stem, including the ventrolateral medulla, while peripheral chemoreceptors are located in the aortic arch and carotid arteries.
CO2 has a potent influence on respiration and is strictly regulated....
CO2 has a potent influence on respiration and is strictly regulated....
939


