Characteristics and causes of climate change under haze weather in Beijing, Tianjin and Hebei
DOU Yi-wen1,2, DAN Li2, HU Bao-kun1, SHI Jun-qing3
1. Beijing Meteorological Information Centre, Beijing 100089, China;
2. Key Laboratory of Regional Climate-Environment research for Temperate East Asia, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China;
3. Beijing Vocational College of Agriculture, Beijing 100093, China
Based on the daily datasets ofhaze, relative humidity, visibility at 14:00, air temperature, wind speed and radiation from 90 national meteorological stations in the Beijing-Tianjin-Hebei region (BTH) during 1961~2016, the climate change in BTH on haze days was analyzed by using the methods of MASH, linear regression, correlation analysis and Mann-Kendall. The results suggested that:the annual mean haze days in BTH showed an obvious enhanced trend, the increase was above 5d/10a, and the haze days in the middle and large cities were obviously higher compared to other areas. The sharp increase of haze days began in 1991~1992. The annual mean haze trend was slowed down under the initiation of special funds for the air pollution prevention and control. The daily mean temperature of haze and non-haze days showed an upward trend in BTH, whereas annual visibility decreased. The overall trend of annual precipitation decreased in BTH. The annual precipitation days of haze daily increased, while it showed a decreasing trend in non-haze days. The annual mean wind of haze and non-haze days in BTH decreased. The haze day increased with the enhanced GDP and energy consumption. The annual mean total radiation and scattering radiation of haze and non-haze days had been decliningin BTH. The declined trend of haze days is more obvious in contrast with non-haze days, and the annual mean total radiation is decreased remarkable than the scattering radiation. The annual mean haze days were negatively correlated with annual mean values of radiation, wind speed and precipitation, but positively correlated with annual mean variables of temperature, GDP and energy consumption.
窦以文, 丹利, 胡保昆, 史君卿. 霾天气影响下的京津冀气候变化特征与成因[J]. 中国环境科学, 2019, 39(2): 506-513.
DOU Yi-wen, DAN Li, HU Bao-kun, SHI Jun-qing. Characteristics and causes of climate change under haze weather in Beijing, Tianjin and Hebei. CHINA ENVIRONMENTAL SCIENCECE, 2019, 39(2): 506-513.
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