您好，欢迎访问北京市农林科学院 机构知识库！
北京市农林科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

CO and CH4 atmospheric trends from dense multi-point forest fires around the city of Chongqing using spaceborne spectrometer data

文献类型： 外文期刊

作者： Wang, Yihao 1 ; Zhang, Yunhe 2 ; Zhao, Chunjiang 2 ; Dong, Daming 2 ; Wang, Kun 4 ;

作者机构： 1.Jiangsu Univ, Sch Agr Engn, Zhenjiang 212013, Peoples R China

2.Beijing Acad Agr & Forestry Sci, Natl Engn Res Ctr Intelligent Equipment Agr, Beijing 100097, Peoples R China

3.Minist Agr & Rural Affairs, Key Lab Agr Sensors, Beijing 100097, Peoples R China

4.Chinese Acad Sci, Aerosp Informat Res Inst, Key Lab Digital Earth Sci, Beijing 100094, Peoples R China

关键词： High temporal resolution; Remote; Sentinel-5p TROPOMI; Aqua AIRS; CO; CH4

期刊名称：ATMOSPHERIC POLLUTION RESEARCH （ 影响因子：4.5； 五年影响因子：4.6 ）

ISSN： 1309-1042

年卷期： 2023 年 14 卷 8 期

页码：

收录情况： SCI

摘要： Forest fires greatly impact the global terrestrial ecology and atmospheric environment. It is important to improve fire prediction mechanisms and track fire trends. This study evaluates using spaceborne spectrometers (Sentinel -5P TROPOMI and Aqua AIRS) to track atmospheric CO and CH4 changes caused by more than a dozen forest fires around the main urban area of Chongqing, China. These forest fires consisted of dense, multi-point, small-scale outbreaks over a short period (August 17-26, 2022). All the fires were near human living areas, leading to relatively complex atmospheric trends. We obtained the spatial distribution of CO and CH4 and analysed the forest fires' exact occurrence and quenching time at each fire location. Concentration gradients of the CO column are consistent with the rise and fall of the fires observed at all fire points. Large CO plumes from different fire locations observed on August 21, and 22 have concentrations exceeding 0.07 molecules/m2. The average CO concentration data at nine ignition points are summed to reflect the temporal trend of CO in the atmosphere over the entire region. The CO2 column range estimated from the CO column was 0.16-0.63 molecules/m2 on August 22. We also tracked and analysed the atmospheric trend of methane concentration during the fire. Consequently, based on satellite data, tracking the temporal trends of CO and CH4 in the atmosphere caused by dense forest fires in a complex environment is feasible.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：北京市农林科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台