Page 112 - 《高原气象》2025年第5期
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                         图7 关中冬季126次持续性区域性霾事件第1~6天925 hPa风场异常合成(矢量, 单位: m·s )
                                      打点区域表示通过了95%的信度检验; 灰色区域表示海拔大于850 m
               Fig. 7 Instantaneous fields of the composite horizontal 925 hPa wind anomaly from day 1 to day 6 for the 126 winter persistent
                   haze events in Guanzhong (vector, unit: m·s ). The dots regions indicate statistical significance exceeding the 95%
                                                    -1
                                confidence level. The grey area covers the region with altitude greater than 850 m
             为 EATL/WRUS 正位相模态, 因此未来对于 NAO                        (11): 7373-7387.
             与 EATL/WRUS的联系值得未来进一步研究。持续                         Chen H P, Wang H J, 2015. Haze days in north China and the associ‐
                                                                   ated  atmospheric  circulations  based  on  daily  visibility  data  from
             时间大于 7 天的持续性区域性霾事件危害更大(穆
                                                                   1960 to 2012[J]. Journal of Geophysical Research Atmospheres,
             泉和张世秋, 2013), 未来有必要对持续时间大于 7
                                                                   120(12): 5895-5909.
             天的持续性区域性霾事件进行分析研究, 探讨其前                            Chen S F, Guo J P, Song L Y, et al, 2019. Temporal disparity of the
             兆信号及环流演变, 并且分析持续性区域性霾事件                               atmospheric systems contributing to interannual variation of win‐

             与非持续性霾的环流差异。从气候变化的角度上                                 tertime haze pollution in the North China Plain[J]. International
             来讲, 西北地区暖湿化也会通过影响冬季气溶胶吸                               Journal  of  Climatology,  40(1):  128-144. DOI:  10. 1002/joc.
                                                                   6198.
             湿性增长等对陕西霾污染的变化造成影响, 未来也
                                                                Chen S F, Guo J P, Song L Y, et al, 2020. Intra-seasonal differences
             值得进一步研究(张强等, 2023)。
                                                                   in the atmospheric systems contributing to interannual variations
             参考文献(References):                                     of autumn haze pollution in the North China Plain[J]. Theoretical
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             Barnston A G, Livezey R E, 1987. Classification, seasonality and per‐  020-03221-4.
                 sistence  of  low-frequency  atmospheric  circulation  patterns[J].  Ding Y H, Wu P, Liu Y J, et al, 2017. Environmental and dynamic
                 Monthly Weather Review, 115: 1083-1126.           conditions  for  the  occurrence  of  persistent  haze  events  in  North
             Bei N F, Li G H, Huang R J, et al, 2016. Typical synoptic situations   China[J]. Engineering, 23(2): 266-271.
                 and  their  impacts  on  the  wintertime  air  pollution  in  the  Guan‐  Li M Y, Yao Y, Simmonds I, et al, 2021. Linkages between the atmo‐
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