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ZHAO Qingzhi, YANG Pengfei, LI Zufeng, YAO Wanqiang, YAO Yibin. Spatial and temporal characteristics of AOD and meteorological factors in China during the period of COVID-19[J]. Geomatics and Information Science of Wuhan University. doi: 10.13203/j.whugis20210209
Citation: ZHAO Qingzhi, YANG Pengfei, LI Zufeng, YAO Wanqiang, YAO Yibin. Spatial and temporal characteristics of AOD and meteorological factors in China during the period of COVID-19[J]. Geomatics and Information Science of Wuhan University. doi: 10.13203/j.whugis20210209

Spatial and temporal characteristics of AOD and meteorological factors in China during the period of COVID-19

doi: 10.13203/j.whugis20210209
Funds:

This paper is supported by National Natural Science Foundation of China (41904036).

  • Received Date: 2021-04-26
  • Objectives: In order to explore the impact of the decrease of human activities on the air quality in China during the period of the Corona Virus Disease 2019 (COVID-19), the temporal and spatial abnormal changes of Aerosol Optical Depth (AOD), Precipitable Water Vapor (PWV) and Temperature (T) were analyzed, and the impact of human activities on the air quality was revealed. Methods: Firstly, the accuracy of AOD, PWV and T is verified by comparing with AOD provided by AERONET and PWV and T provided by radiosonde. Then, we analyze the long-term trends of AOD, PWV and T during the weekend and the week, and find that human activities have a certain impact on the air quality. Secondly, the temporal and spatial changes of AOD, PWV and T during the period of COVID-19 were studied, which confirmed that there was a good correlation between human activities and air quality. Finally, 184 cities of different grades in China are selected for further analysis to determine the impact of population density on AOD, PWV and T, and further reveal the specific response relationship between human activities and air quality. Results: Through the verification of the accuracy of the data used in this paper, it is found that the data selected in this paper have high accuracy, which can be used in this experimental study. By analyzing the COVID-19 PWV, AOD and T changes, we found that PWV, AOD and T were all affected by the epidemic. Conclusions: Due to the influence of COVID-19, AOD, PWV and T show different trends. At the same time, it is found that the main reason for this phenomenon is the influence of the intensity of human activities.
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Spatial and temporal characteristics of AOD and meteorological factors in China during the period of COVID-19

doi: 10.13203/j.whugis20210209
Funds:

This paper is supported by National Natural Science Foundation of China (41904036).

Abstract: Objectives: In order to explore the impact of the decrease of human activities on the air quality in China during the period of the Corona Virus Disease 2019 (COVID-19), the temporal and spatial abnormal changes of Aerosol Optical Depth (AOD), Precipitable Water Vapor (PWV) and Temperature (T) were analyzed, and the impact of human activities on the air quality was revealed. Methods: Firstly, the accuracy of AOD, PWV and T is verified by comparing with AOD provided by AERONET and PWV and T provided by radiosonde. Then, we analyze the long-term trends of AOD, PWV and T during the weekend and the week, and find that human activities have a certain impact on the air quality. Secondly, the temporal and spatial changes of AOD, PWV and T during the period of COVID-19 were studied, which confirmed that there was a good correlation between human activities and air quality. Finally, 184 cities of different grades in China are selected for further analysis to determine the impact of population density on AOD, PWV and T, and further reveal the specific response relationship between human activities and air quality. Results: Through the verification of the accuracy of the data used in this paper, it is found that the data selected in this paper have high accuracy, which can be used in this experimental study. By analyzing the COVID-19 PWV, AOD and T changes, we found that PWV, AOD and T were all affected by the epidemic. Conclusions: Due to the influence of COVID-19, AOD, PWV and T show different trends. At the same time, it is found that the main reason for this phenomenon is the influence of the intensity of human activities.

ZHAO Qingzhi, YANG Pengfei, LI Zufeng, YAO Wanqiang, YAO Yibin. Spatial and temporal characteristics of AOD and meteorological factors in China during the period of COVID-19[J]. Geomatics and Information Science of Wuhan University. doi: 10.13203/j.whugis20210209
Citation: ZHAO Qingzhi, YANG Pengfei, LI Zufeng, YAO Wanqiang, YAO Yibin. Spatial and temporal characteristics of AOD and meteorological factors in China during the period of COVID-19[J]. Geomatics and Information Science of Wuhan University. doi: 10.13203/j.whugis20210209
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