PDF(1394 KB)
PDF(1394 KB)
PDF(1394 KB)
差分吸收激光雷达测量甲烷排放量的研究
Investigation on Methane Emission Measurement by Differential Absorption Lidar
甲烷是仅次于二氧化碳的第二大温室气体。由于工业和农业活动导致甲烷在大气中浓度迅速增高,实现甲烷排放的直接测量对全面控制甲烷排放具有重要价值。甲烷排放测量存在难于定量的问题,具有时空分辨能力的差分吸收激光雷达技术是实现甲烷排放精确定量测量的最优解决方案。利用可控释放装置模拟3~15 kg/h的甲烷排放情况,对差分吸收激光雷达系统测量甲烷排放量进行了现场实验评估,结果表明:差分吸收激光雷达技术具备精准识别并量化甲烷排放的测量能力,测量排放量不确定度最大来源为风场变化带来的重复性影响,测量甲烷3~15 kg/h排放量的最大相对扩展不确定度为8.59%(k=2)。
Methane is the second most important greenhouse gas after carbon dioxide. The atmospheric methane concentration increased sharply due to anthropogenic and agricultural activities. Therefore, the achievement of measurement of methane emissions is of high contribution to the comprehensive control of methane emissions. Tracing and quantifying the methane emissions are the obstacles in methane emission measurement. Differential absorption lidar(DIAL) system is optimal technical solution to trace and quantify methane emissions with advantage of high spatio-temporal resolution. The controllable release facility(CRF) was used to calibrate the DIAL system in methane emission measurement. In field experiments, the CRF worked as emission sources with emission rate from 3 kg/h to 15 kg/h, and the DIAL system carried out remote quantifying measurement of methane emissions. The results demonstrated the capability of DIAL system to trace and quantify of methane emissions. The maximum relative expanded uncertainty is 8.59%(k=2) for methane emission measurement by DIAL system in case of 3~15 kg/h emission rates. And the repetitive factors due to changes of the wind field had the greatest contribution to the uncertainty in methane emission measurement by DIAL system.
甲烷排放 / 空间浓度 / 温室气体 / 排放量测量 / 差分吸收激光雷达 / 可控释放装置
methane emissions / spatial concentration / greenhouse gas / emission measurement / differential absorption lidar / controllable release facility
| [1] |
IPCC. Climate Change 2023: Synthesis Report. Contribution of Working Groups I, II and III to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change [R]. Intergovernmental Panel on Climate Change (IPCC), 2023.
|
| [2] |
|
| [3] |
马路遥,马若梦,徐鸿,等. 基于光腔衰荡光谱法的水汽线形强度测量[J]. 计量学报, 2022, 43(2): 287-292.
|
| [4] |
李庚昱, 马若梦, 臧金亮, 等. 基于红外吸收光谱技术的CO2同位素测量研究进展[J]. 计量科学与技术, 2024, 68(3):15-21.
|
| [5] |
李俊豪,郑凯元,席振海,等. 基于开放光路离轴积分腔的甲烷传感技术与实验[J]. 中国激光, 2021, 48(16): 1610002.
|
| [6] |
马路遥,马若梦,祝晓轶,等. 基Herriott吸收池的固定源二氧化碳浓度测量研究[J]. 计量学报, 2022, 43(3): 416-419.
|
| [7] |
丁武文, 孙利群, 衣路英. 基于可调谐半导体激光器吸收光谱的高灵敏度甲烷浓度遥测技术[J]. 物理学报, 2017, 66(10):1000702.
|
| [8] |
吕洪震,马若梦,张亮,等. 基于傅里叶红外光谱仪的高温含水烟气中低浓度一氧化氮精确测量研究[J]. 计量学报, 2021, 42(4): 526-531.
|
| [9] |
|
| [10] |
胡鹤鸣,王池,张金涛. 城市区域碳排放测量反演研究国际进展[J]. 计量学报, 2017, 38(1): 7-12.
|
| [11] |
任歌, 张亮, 林鸿,等. 温室气体和大气污染物排放量监测与计量研究[J]. 计量技术, 2020, (5): 79-84.
|
| [12] |
刘晓萌,刘勤勇,张亮. 大气温室气体探测激光雷达及其标定技术研究进展[J]. 计量学报, 2018, 39(1): 39-42.
|
| [13] |
|
| [14] |
|
| [15] |
|
| [16] |
|
| [17] |
|
| [18] |
|
| [19] |
|
| [20] |
|
| [21] |
|
| [22] |
|
| [23] |
|
| [24] |
|
| [25] |
|
| [26] |
|
| [27] |
方平治, 赵兵科, 鲁小琴, 等. 华东沿海地带台风风廓线特征的观测个例分析[J]. 大气科学, 2013, 37(5): 1091-1098.
|
| [28] |
|
/
| 〈 |
|
〉 |