从生物肥料储存中测量甲排放量,使用地面高光谱成像和流体室
Magnus Gålfalk1, Sören Nilsson Påledal2, Johan Yngvesson3
1Department of Thematic Studies - Environmental Change, Linköping University, Linköping 581 83, Sweden.
Environmental science & technology
|February 14, 2024
概括
监测开放式有机材料储存中的甲 (CH4) 排放对于可持续性至关重要. 一个新的高光谱摄像头提供了灵敏的,无干扰的CH4流量评估,识别了未知的排放点,并协助了减缓工作.
科学领域:
- 环境科学 环境科学
- 大气化学 大气化学
- 遥感 遥感 遥感 遥感
背景情况:
- 有机材料的开放储存,如生物肥料,是甲 (CH4) 的重要来源,甲是一种强大的温室气体.
- 精确监测这些设施的CH4排放对于可持续发展工作至关重要,但在不干扰运营的情况下具有挑战性.
研究的目的:
- 为了证明一种新型高分辨率超光谱摄像机对于敏感的CH4流量评估的有效性.
- 为了比较基于相机的测量与传统的流体室方法.
- 识别和量化来自开放式生物肥料储存系统中各个点的CH4排放.
主要方法:
- 使用了一种新型高分辨率的超光谱摄像头进行CH4流量评估.
- 使用常规流体室进行了同时测量.
- 在一个生物气厂的1104平方米的生物肥料储中进行了应用测量.
主要成果:
- 超光谱摄像头检测到CH4排放量为6.0 ± 1.3公斤h-1,而流体室测量13 ± 5.7公斤h-1.
- 摄像头发现了从油箱入口和物料装载过程中以前未知的排放.
- 排放量占生物气厂CH4总产量的0.7-1.4%.
结论:
- 基于地面的超频谱遥感是CH4监测和缓解验证的一个有前途的工具.
- 减少开放式有机储存所产生的CH4排放需要改进生物气消化,预冷或气密储存解决方案.
- 准确的流量映射对于验证减排战略的有效性至关重要.
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