ZHAO Wen,FAN Guangzhou,LI Yiwei.Correlation Study between the Strength of the Northern Branch Ridge and Atmospheric Quality in China from 2015 to 2019[J].Journal of Chengdu University of Information Technology,2021,36(06):646-654.[doi:10.16836/j.cnki.jcuit.2021.06.011]
2015-2019年北支脊强度与中国空气质量状况的相关性研究
- Title:
- Correlation Study between the Strength of the Northern Branch Ridge and Atmospheric Quality in China from 2015 to 2019
- 文章编号:
- 2096-1618(2021)06-0646-09
- Keywords:
- atmospheric sciences; climate change; the strength of the northern branch ridge; atmospheric quality; time and space distribution
- 分类号:
- P434+.2
- 文献标志码:
- A
- 摘要:
- 基于NCEP/NCAR再分析资料和AQI台站数据,通过统计分析、相关分析等方法,利用北支脊强度指数及空气质量指数讨论了2015-2019年北支脊强度及空气质量的变化特征以及两者之间的相互关系。结果表明:5年内北支脊强度表现为先增强后减弱,春季北支脊强度逐渐加强至夏季到达峰值后逐渐减弱至冬季到达谷值。空气质量状况表现为春、夏季较好,秋、冬季较差,中度污染区域主要位于中部地区,华北地区空气质量状况季节性变化显著。AQI值与北支脊强度指数的时间序列为显著负相关,当北支脊强度偏强(弱)时AQI值整体偏小(大),中国空气质量上升(下降)。春季西北及华北地区主要为负相关。夏季以长江为界,相关性在中国的分布具有明显的南北差异。秋季大部分地区负相关性显著。冬季内陆地区以负相关为主,东北及东部沿海城市为显著正相关。
- Abstract:
- Based on NCEP/NCAR reanalysis data and AQI station data,and through statistical analysis and correlation analysis,etc,the variation characteristics of the strength of the northern branch ridge and the atmospheric quality from 2015 to 2019 are discussed by using the strength index of the northern branch ridge and air quality index. The results showed that the strength of the northern branch ridge first increased and then weakened within these 5 years,and the strength of the northern branch ridge gradually strengthened to reach the peak value in summer and then gradually weakened to reach the valley value in winter. The air quality is better in spring and summer,and worse in autumn and winter. The moderately polluted areas are mainly located in centralChina,and the air quality in North China has seasonal changes. The time series of the AQI value and the strength index of the north ridge are significantly negatively correlated. When the strength of the north ridge is strong(weak),the AQI value is generally small(large),and the air quality in China is increased(decreased). In spring,Northwest China and North China are mainly negatively correlated. In summer,the Yangtze River is the boundary of this season,and the distribution of correlation in China has obvious difference between north and south. In autumn,the negative correlation is significant in most areas of China. In winter,the inland areas are mainly negatively correlated,and the northeast and eastern coastal cities are significantly positive correlation.
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备注/Memo
收稿日期:2021-01-10
基金项目:国家自然科学基金资助项目(42075019、42075081); 国家重点研发计划资助项目(2018YFC1505702); 第二次青藏高原综合科学考察研究资助项目(2019QZKK0102)