...
首页> 外文期刊>Current Science: A Fortnightly Journal of Research >Trace gases and CO2 isotope records from Cabo de Rama, India
【24h】

Trace gases and CO2 isotope records from Cabo de Rama, India

机译:印度Cabo de Rama的痕量气体和CO2同位素记录

获取原文
获取原文并翻译 | 示例
           

摘要

Concentrations of carbon dioxide (CO2), methane (CH4), carbon monoxide (CO), nitrous oxide (N2O) and hydrogen (H-2), and the stable carbon (delta C-13-CO2) and oxygen (delta O-18-CO2) isotopic composition of CO2 have been measured in air samples collected from Cabo de Rama (CRI), India, for the period 1993-2002. The observations show clear signatures of Northern and Southern Hemispheric (NH and SH) air masses, mixed with their regional fluxes and chemical loss mechanisms, resulting in complex seasonal variation of these gases. The CRI measurements are compared with remote marine sites at Seychelles and Mauna Loa. Simulations of two major anthropogenic greenhouse gases (CO2 and CH4) concentrations using a chemistry-transport model for the CRI site suggest that globally optimized fluxes can produce results comparable to the observations. We discuss that CRI observations have provided critical guidance in optimizing the fluxes to constrain the regional source/sinks balance.
机译:二氧化碳(CO2),甲烷(CH4),一氧化碳(CO),一氧化二氮(N2O)和氢(H-2)以及稳定碳(δC-13-CO2)和氧(δO-在1993-2002年期间,从印度拉波角(CRI)收集的空气样本中测量了二氧化碳的18-CO2同位素组成。观测结果显示了北半球和南半球(NH和SH)的明显特征,以及它们的区域通量和化学损失机制,导致这些气体的复杂季节变化。将CRI测量值与塞舌尔和莫纳罗亚群岛的偏远海洋站点进行了比较。使用化学迁移模型对CRI站点进行的两种主要人为温室气体(CO2和CH4)浓度模拟表明,全球最佳通量可以产生与观测结果相当的结果。我们讨论了CRI的观测为优化通量以约束区域源/汇平衡提供了关键指导。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号