机构地区:[1]江西省生态气象中心,南昌330096 [2]南昌国家气候观象台,南昌330043 [3]吉安市生态气象重点实验室,吉安343000 [4]东华理工大学地下水污染成因与修复江西省重点实验室/水资源与环境工程学院,南昌330013 [5]宜春市气象局,宜春336000
出 处:《环境化学》2025年第1期243-254,共12页Environmental Chemistry
基 金:江西省气象科技项目(JX2023Z10,ZDX2021003);华东区域气象科技协同创新基金合作项目(QYHZ202317);江西省大气污染成因与控制重点实验室开放基金(AE2202);吉安市生态气象重点实验室开放式研究基金(2023JEM101,2024JEM224);宜春市农业、气象指导性科技计划项目(2022[54]08)资助.
摘 要:本文利用臭氧监测仪(OMI)卫星传感器反演江西省对流层NO_(2)柱浓度与地面观测站点监测的NO_(2)质量浓度进行相关性分析,发现卫星反演的NO_(2)柱浓度与地面NO_(2)质量浓度呈显著的正相关,能够反映地面真实的NO_(2)污染状况.再结合全省气象数据和NO_(x)排放量、社会经济等统计数据,通过线性拟合、相关性分析、趋势分析等方法分析研究2005-2023年江西省对流层NO_(2)柱浓度空间分布和变化特征及其影响因素.结果表明,2005-2023年江西省对流层NO_(2)柱浓度高值区主要分布在九江-南昌-新余一带,低值区主要位于赣南地区.江西省对流层NO_(2)柱浓度季节变化特征明显,其中冬季NO_(2)污染区域和浓度最大,其次是秋季和春季,夏季最小.江西省对流层NO_(2)柱浓度呈现较为明显的两个变化阶段,2005-2012年为增长阶段,年增长趋势率为0.36×10^(15)molec·cm^(−2)·a^(−1);2013年《大气污染防治行动计划》实施后,NO_(2)柱浓度为下降阶段,年下降趋势率为0.09×10^(15)molec·cm^(−2)·a^(−1).从月尺度上分析发现,气温和降雨量与江西省对流层NO_(2)柱浓度呈显著的负相关,说明高温可以抑制NO_(2)柱浓度的升高,而降雨对NO_(2)柱浓度具有削减作用.从年尺度上发现,气象因素在年际变化上对江西省对流层NO_(2)柱浓度影响不显著前提下,江西省生产总值、人口数、煤炭消费总量和石油消费总量逐年增长的同时,对流层NO_(2)柱浓度不升反降,这表明了在国家及地方政府强有力执行相关政策和法规下经济发展和环境保护可以实现良性发展.Based on the NO_(2)tropospheric column concentration from Ozone Monitoring Instrument(OMI)and NO_(2)concentration provided by the environmental monitoring stations in Jiangxi Province,the correlation analysis between the data had a positive correlation,NO_(2)tropospheric column concentration could reflect the real NO_(2)pollution status on the ground.Combined with meteorological data,NO_(x) emissions,socio-economic and other statistical data,the spatial distribution,variation characteristics and influencing factors of NO_(2)tropospheric column concentration in Jiangxi Province from 2005 to 2023 were analyzed by linear fitting,correlation analysis,trend analysis and other methods.The results showed that the high value area of NO_(2)tropospheric column concentration in Jiangxi Province from 2005 to 2023 was mainly distributed in Jiujiang-Nanchang-Xinyu area,and the low value area was mainly located in the south of Jiangxi.The seasonal variation characteristics of NO_(2)tropospheric column concentration in Jiangxi Province were obviously,in which the largest area and concentration of NO_(2)pollution in winter,followed by autumn and spring,and the smallest in summer.The NO_(2)tropospheric column concentration in Jiangxi Province showed two significant stages of changes,the growth stage from 2005 to 2012,with an annual growth rate of 0.36×1015 molec·cm^(−2)·a^(−1).“the Action Plan for Prevention and Control of Air pollution”implemented in 2013,then it was the declining stage,with an annual declining rate of 0.09×10^(15)molec·cm^(−2)·a^(−1).The temperature and precipitation were significantly negatively correlated with the NO_(2)tropospheric column concentration on monthly scale in Jiangxi Province,indicating that high temperature can inhibit the increase of NO_(2)tropospheric column concentration,while precipitation had a reducing effect on NO_(2)tropospheric column concentration.On the premise that in terms of interannual variation meteorological factors had no significant impact on the NO_(2)tropos
关 键 词:NO_(2)柱浓度 江西省 OMI 时空分布特征 影响因素
分 类 号:X515[环境科学与工程—环境工程] O6[理学—化学]
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