基于CrIS卫星反演与地面观测的中国大气氨浓度的时空特征及对比评估  

Spatio-temporal characteristics and evaluation of atmospheric ammonia concentrations in China based on CrIS inversion data and ground observations

作　　者：王思慧 吴锴 潘月鹏[3] 朱丽叶 WANG Sihui;WU Kai;PAN Yuepeng;ZHU Liye(Southern Ocean Science and Engineering Laboratory of Guangdong Province,School of Atmospheric Sciences,Sun Yat-Sen University,Zhuhai519082;Plateau Atmosphere and Environment Key Laboratory of Sichuan Province,School of Atmospheric Sciences,Chengdu University of InformationTechnology,Chengdu 610225;State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry(LAPC),Institute of Atmospheric Physics,ChineseAcademy of Sciences,Beijing 100029)

机构地区：[1]中山大学大气科学学院,南方海洋科学与工程广东省实验室,珠海519082 [2]成都信息工程大学大气科学学院,高原大气与环境四川省重点实验室,成都610225 [3]中国科学院大气物理研究所,大气边界层物理和大气化学国家重点实验室,北京100029

出　　处：《环境科学学报》2023年第3期303-314,共12页Acta Scientiae Circumstantiae

基　　金：国家自然科学基金面上项目(No.41030085)。

摘　　要：基于地面观测与CrIS卫星反演的数据,分析了我国2015年9月—2016年8月的大气氨(NH_(3))浓度在时空上的变化特征,并评估了这两类数据之间存在的差异.结果表明:基于CrIS卫星反演的数据能够很好地识别我国NH_(3)浓度在时空上的变化趋势,但同地面观测相比,存在数值上的低估.我国的NH_(3)浓度总体上呈现出“夏高冬低”的特点.就空间分布而言,华北、华东和中南地区是我国目前NH_(3)浓度相对较高的地区.在温度较高的时段,城市地区的NH_(3)浓度与农村地区的浓度水平相当,表明非农业源排放对城市地区NH_(3)浓度的贡献是不可忽视的.在对先验廓线进行分类时,CrIS卫星的快速物理检索算法(CrIS Fast Physical Retrieval algorithm,简称CFPR)对我国不同区域NH_(3)的实际浓度水平有所低估.因此,提高CrIS卫星反演NH_(3)浓度的能力可考虑对先验廓线进行重新分类.Using the CrIS satellite observation and ground observation of ammonia(NH_(3))through September 2015 to August 2016,this study analyzed the spatial and temporal variation characteristics of atmospheric ammonia concentration in China and the differences between CrIS retrieved NH_(3) and ground NH_(3) observation.The results show that CrIS can well capture the spatio-temporal variation of NH_(3) concentration in China,but the estimation of NH_(3) concentration at ground level is slightly lower than that by in situ observation sites.NH_(3) concentration in China generally showed a trend of high in summer and low in winter.The hot spots of NH_(3) concentration generally occur in North China,East China and central and southern China.During periods of high temperature,urban NH_(3) concentrations are comparable to rural ones,indicating that the contribution of emissions from non-agricultural sources to urban NH_(3) concentrations cannot be ignored.The apriori profile classification of CrIS NH_(3) retrievals results in the underestimation of NH_(3) concentration in some regions of China under the CrIS Fast Physical Retrieval algorithm(CFPR)algorithm.Therefore,reclassification of the apriori profiles should be considered to improve the quality of CrIS NH_(3) retrievals.

关 键 词：氨 CrIS 卫星反演 空气质量 

分 类 号：X513[环境科学与工程—环境工程]