An application of tomographic reconstruction of atmospheric CO2 over a volcanic site based on open-path IR laser measurements
An application of tomographic reconstruction of atmospheric CO2 over a volcanic site based on open-path IR laser measurements
复制标题
基于开路红外激光测量的火山遗址大气二氧化碳层析成像重建应用
DOI：
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发表时间：
2003
影响因子：
8.2
通讯作者：
O. Vaselli
中科院分区：
文献类型：
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作者：
C. Belotti;F. Cuccoli;L. Facheris;O. Vaselli
意大利南部地区的特点是存在许多活跃的火山区。在波佐利(意大利那不勒斯)，一个以高火山风险为特征的城市地区，存在着一个气体排放点。大气中CO/sub2/的排放量很高，其大气浓度的测量在许多环境和科学应用中都是一项重要的任务。本文描述了移动红外(IR)激光系统在该地区的应用，该系统能够测量沿1公里长的直线大气路径上的CO/SUB_2/浓度，并将层析处理的结果应用于二维CO/SUB_2/浓度场的反演。激光系统通过处理沿连接发射器/接收器激光单元和无源后向反射器装置的露天直线链路传播的所接收的红外激光辐射来计算链路平均浓度。已经进行了为期一天的测量活动，15条不同的大气传播链路被认为移动了发射器/接收器单元和一些后向反射器。
The southern area of Italy is characterized by the presence of many active volcanic areas. In Pozzuoli (Naples, Italy), an urban area characterized by high volcanic risk, a gas emitting site is present. A high percentage of CO/sub 2/ is emitted, whose atmospheric concentration measurement is an important task in many environmental and scientific applications. In this paper, we describe the utilization over that area of a mobile infrared (IR) laser system, able to measure the CO/sub 2/ concentration along rectilinear atmospheric paths up to 1-km length, and the result of tomographic processing applied to retrieve a two-dimensional CO/sub 2/ concentration field. The laser system computes the link averaged concentration by processing the received IR laser radiation propagated along an open-air rectilinear link connecting the transmitter/receiver laser unit and a passive retroreflector device. A one-day measurement campaign has been made and 15 different atmospheric propagation links were considered moving the transmitter/receiver unit and some retroreflectors.