一种新的CO_2探空测量方法  

A New Method for Atmospheric CO_2 Balloonsonde Measurement

作　　者：冯林[1,2] 胡顺星[1] 黄见[1] 苑克娥[1] 邵石生[1] 徐之海[1] 曹开法[1] 孟祥谦[1,2] 吕炜煜[1,2] 于海利[1,2] 张世国[1,2] 

机构地区：[1]中国科学院安徽光学精密机械研究所中国科学院大气成分与光学重点实验室,安徽合肥230031 [2]中国科学院研究生院,北京100049

出　　处：《激光与光电子学进展》2012年第10期88-93,共6页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(41005015);科技部科技基础性工作专项基金(2007FY110700);中科院知识创新工程重要方向性项目(KJCX2-EW-N07)资助课题

摘　　要：介绍了一种新的CO2探空测量方法。其原理是利用比尔-歩格-朗伯定律,使用非分光红外法,通过选择合适的红外光源和红外探测器,设计了合理的电路,在定标的基础上将测量的光强转换成CO2浓度,制作出可用于探空测量的实验装置。通过与EC9820型CO2分析仪的地面对比实验,结果表明,连续24h测量的误差范围在-10×10-6～10×10-6,平均误差为3.76×10-6,验证了设计的可行性,基本满足了大气CO2探空的精度需求,为进一步研制CO2探空仪提供了参考。A new method is presented for atmospheric CO2 balloonsonde measurement. Based on Beer-BouguerLambert law and non-dispersed infrared （NDIR） technique, an experimental device is designed and developed. A infrared LED is used to produce suitable light source, and infrared LED detectors and a proper electronic circuit designed are used to transform light intensity into electrical signals in the experimental device. Calibration method for CO2 measurement is also presented. A comparison experiment is carried out for continuous 24 h on ground with EC9820 analyzer. Result shows that measurement error ranges from -10×10^-6 to 10×10^-4, and standard deviation is 3.76×10^-4 , which basically satisfies the precision demand for atmospheric CO2 measurement. The feasibility of CO2 measurement has been validated.

关 键 词：大气光学 CO2探空测量 比尔一步格一朗伯定律 非分光红外法 

分 类 号：TN216[电子电信—物理电子学]