降水过程对断层CO2气体异常排放响应的个例分析

为了从观测事实的角度揭示岩石圈的热异常对大气圈的影响，本文利用怀来后郝窑测点的断层气CO2排放观测数据和中国752站降水的逐日观测资料，分析了断层气CO2异常排放与降水事件的时空演变联系.个例分析结果表明，断层气CO2的异常排放会导致局地降水的增多.以1991年为例，伴随着断层气CO2排放的异常增加，在大范围降水负异常的背景下，CO2排放点周边区域出现显著的降水正异常（降水距平百分率大于零）区.同时，CO2异常幅度较大的时段，相应的降水正异常区的中心值也较大.此外，分析降水响应断层气CO2排放异常的时间还发现，断层气CO2异常排放对其后10天内的降水过程影响最为显著.

A case study of precipitation events in response to the abnormal fault CO2 emission

In order to investigate the potential influence of thermal anomaly from the lithosphere on the aerosphere from the viewpoint of observational facts, the temporal and spatial relationship between abnormal fault CO2 discharge and precipitation events is analysed, based on the data of CO2 in fault product gas at Houhaoyao site in Hebei province and precipitation data from 752 meteorological stations in China. The results show that the anomaly of fault CO2 emission is able to lead to local precipitation anomaly. During the period of CO2anomalies, there is always positive anomaly of precipitaion in the surrounding region of the epicenter under the background of large scale negative anomalies of precipitation. Meanwhile, it is found that a relatively larger magnitude of precipitation anomaly usually corresponds to a larger amplitude of CO2 abnormal emission. In addtion, the analyses of the precipitation time series indicate that the fault CO2 discharge has evident effects on the rainfall events within the following 10 days.