|Table of Contents|

Forecasting Model of Short-Term PM2.5 ConcentrationBased on Deep Learning(PDF)

《南京师大学报（自然科学版）》[ISSN:1001-4616/CN:32-1239/N]

Issue:
2019年03期
Page:
32-41
Research Field:
·全国机器学习会议论文专栏·
Publishing date:

Info

Title:
Forecasting Model of Short-Term PM2.5 ConcentrationBased on Deep Learning
Author(s):
Zhao Wenfang1; 2; Lin Runsheng2; Tang Wei3; Zhou Yong3
(1.Institute of Urban Meteorology,China Meteorological Administration,Beijing 100089,China)(2.Beijing Meteorological Information Center,Beijing Meteorological Bureau,Beijing 100089,China)(3.Development and Research Center,China Meteorological Administration,Beijing 100081,China)
Keywords:
forecast for PM2.5 concentration; machine learning; long short term memory; deep learning; convolutional neural network
PACS:
TP391
DOI:
10.3969/j.issn.1001-4616.2019.03.005
Abstract:
In order to improve the accuracy of PM2.5 concentration forecast in Beijing Meteorological Bureau,a deep learning prediction model based on convolutional neural network(CNN)and long short term memory neural network(LSTM)was proposed. Firstly,the feature vectors extraction was carried out by using the correlation analysis technique from meteorological data such as temperature,wind,relative humidity,precipitation,visibility and atmospheric pressure. Secondly,taking into account the fact that PM2.5 concentration was significantly affected by surrounding meteorological impact factors,meteorological grid analysis data were novel involved into the model,as well as the historical PM2.5 concentration data and meteorological observation data of the present station. Spatiotemporal sequence data were generated from these data after integrated processing. Highlevel spatiotemporal features were extracted through the combination of the CNN and LSTM. Finally,future 24-hour prediction of PM2.5 concentration was made by the model. The comparison among the accuracy of this optimized model,support vector machine(SVM)and existing PM2.5 forecast system is performed to evaluate their performance. The results show that the proposed CNN-LSTM model performs better than SVM and current operational models in Beijing Meteorological Bureau,which has effectively improved the prediction accuracy of PM2.5 concentration for different time predictions scales in the next 24 hours.

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Last Update: 2019-09-30