ZHAO Huan,XU Chen,ZHU Xinyue,et al.Analysis of Persistent PM2.5 Pollution Process during the Winter of 2021-2022 in Chengdu[J].Journal of Chengdu University of Information Technology,2024,39(05):644-648.[doi:10.16836/j.cnki.jcuit.2024.05.018]
2021-2022年冬季成都地区一次持续性PM2.5污染过程分析
- Title:
- Analysis of Persistent PM2.5 Pollution Process during the Winter of 2021-2022 in Chengdu
- 文章编号:
- 2096-1618(2024)05-0644-05
- 分类号:
- X513
- 文献标志码:
- A
- 摘要:
- 为更好地研究近年来盆地PM2.5污染的变化规律,通过分析2021-2022年冬季成都地区一次细颗粒物(PM2.5)污染的变化特征与气象条件关系得出,本次污染过程具有持续时间长(持续21 d),前期日变化不明显,后期污染较前期严重的特点。由于污染过程期间,较强的晴空辐射创造了有利的逆温条件,大气混合层高度较低,垂直方向上的通风能力较弱,使大气稳定不利于污染扩散,同时垂直和水平风场对污染物的输送能力都较弱,使PM2.5逐步积累。进一步依托风廓线雷达观测数据计算局地回流指数(R),发现污染过程后期成都各地区R值逐步增大,水平输送能力逐步增强,前期东南部较好,后期西部较好。
- Abstract:
- To study the variation regularity of PM2.5 pollution in the basin in recent years,the relationship between the variation characteristics of PM2.5 pollution and meteorological conditions in the winter of 2021-2022 in the Chengdu area was analyzed,the pollution process has the characteristics of long duration(lasting 21 days),no obvious diurnal variation in the earlier period,and more serious pollution in the later period than in the earlier period. During the pollution process,the strong clear sky radiation creates favorable inversion conditions,the lower altitude of the atmospheric mixing layer,and the weaker ventilation capacity in the vertical direction,which make the atmosphere stable and not conducive to the diffusion of pollution,at the same time,both vertical and horizontal wind fields are weak to transport pollutants,so that PM2.5 gradually accumulated. Based on the wind profiler data,the local reflux index(R)was calculated,and it was found that the R value and the horizontal transport capacity of Chengdu gradually increased in the late stage of the pollution process,and the southeast was better in the early stage,the later west is better.
参考文献/References:
[1] 杨洪斌,邹旭东,汪宏宇,等.大气环境中PM2.5的研究进展与展望[J].气象与环境学报,2012,28(3):6.
[2] 杨晓亮,杨 敏.一次雾霾过程中气象因子与细颗粒物浓度关系的研究[J].干旱气象,2014,32(5):8.
[3] 胡亚旦,周自江.中国霾天气的气候特征分析[J].气象,2009,35(7):6.
[4] 孙亮.灰霾天气成因危害及控制治理[J].环境科学与管理,2012(10):75-79.
[5] 陈瑞敏,吴雁,康文英,等.连续雾霾天气污染物浓度变化及天气形势特征分析[J].气候与环境研究,2014,19(2):209-218.
[6] 郭丽君,郭学良,方春刚,等.华北一次持续性重度雾霾天气的产生、演变与转化特征观测分析[J].中国科学:地球科学,2015(4):17.
[7] 步巧利,吴涧.1960-2009年中国灰霾天气演变特征分析[J].广东气象,2018,40(5):3.
[8] 刘馨语,陈权亮.四川盆地大气层结变化及其对雾霾天气影响的个例研究[J].四川环境,2016,35(3):7.
[9] 赵佶,白爱娟.四川盆地霾天气变化特征和典型霾过程分析[J].环境科学与技术,2015(S1):6.
[10] 汤宇磊,杨复沫,詹宇.四川盆地PM2.5与PM10高分辨率时空分布及关联分析[J].中国环境科学,2019,39(12):9.
[11] 邓中慈,康平,胡成媛,等.四川盆地PM2.5时空分布及影响因子研究[J].环境污染与防治,2020,42(11):4.
[12] 唐利利,何莉,庞晓明.南宁市空气中细颗粒物污染水平及其与气象因素的关系[J].广西科学院学报,2011,27(2):3.
[13] 王宏,陈晓秋,余永江,等.福州市PM2.5、PM2.5/PM10分布特征及气象影响因子分析[C].第29届中国气象学会年会.2012:1-7.
[14] 蒲维维,赵秀娟,张小玲.北京地区夏末秋初气象要素对PM2.5污染的影响[J].应用气象学报,2011,22(6):716-723.
[15] 戴春岭,齐堃,张菲菲,等.石家庄市一次典型污染过程的PM2.5污染特征[J].环境研究与监测,2014,27(3):5.
[16] 李梦,唐贵谦,黄俊,等.京津冀冬季大气混合层高度与大气污染的关系[J].环境科学,2015(6):9.
[17] 毛维薇,张甫仁.大气混合层高度对通风及污染物扩散的影响[J].重庆工商大学学报(自然科学版),2016,33(6):8.
[18] Nozaki K Y. Mixing Depth Model Vsing Hourly Surface Observations. Report 7053,USAF Environmental Technical Applications Center,1973.
[19] 黄奕丹,陈锦鹏,吴建成,等.风廓线雷达资料在灰霾天气分析中的应用[J].海峡科学,2017(6):4.
[20] 吴蒙,罗云,吴晓绚,等.珠三角垂直风场输送能力对空气质量影响的观测研究[C].第35届中国气象学会年会S12大气成分与天气,气候变化与环境影响暨环境气象预报及影响评估. 2018.
[21] 吴蒙,罗云,吴兑,等.珠三角干季海陆风特征及其对空气质量影响的观测[J].中国环境科学,2016,36(11):10.
[22] 陈晓阳,冯旭,范绍佳,等.回流指数在空气质量变化研究中的应用[J].环境科学学报,2016,36(3):10.
[23] 赵福燕,陈朝平,王凌,等.成都市大气污染与气象条件关系分析[J].高原山地气象研究,2020,40(3):5.
[24] 曹杨,王晨曦,赵晓莉,等.成都市PM2.5污染特征及其与地面气象要素的关系分析[J].中低纬山地气象,2020,44(4):6.
[25] 汤天然,陈建楠,李广前,等.降雨对PM2.5浓度的影响及人工降雨降低PM2.5浓度的探讨[J].贵州气象,2013,37(4):3.
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备注/Memo
收稿日期:2023-03-28