...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Environmental Science & Technology >Aerosol Optical Properties and Climate Implications of Emissions from Traditional and Improved Cookstoves
【24h】

Aerosol Optical Properties and Climate Implications of Emissions from Traditional and Improved Cookstoves

机译：传统和改进炊具排放的气溶胶光学特性和气候影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Cookstove emissions are a major global source of black carbon but their impact on climate is uncertain because of limited understanding of their optical properties. We measured optical properties of fresh aerosol emissions from 32 different stove/fuel combinations, ranging from simple open fires to high-performing forced-draft stoves. Stoves were tested in the laboratory using the firepower sweep protocol, which measures emissions across the entire range of functional firepower. There is large variability in measured optical properties across the entire range of firepower. This variability is strongly correlated with black carbon-to-particulate matter mass ratio (BC/PM). In comparison, stove type, fuel, and operational metrics were poor predictors of optical properties. We developed parametrizations of the mass absorption cross-section, the absorption angstrom exponent, and the single scattering albedo of fresh emissions as a function of BC/PM. These parametrizations, derived from laboratory data, also reproduce previously reported field measurements of optical properties of real-world cooking emissions. We combined our new parametrizations of intensive optical properties with published emissions data to estimate the direct radiative effect of emissions for different stove technologies. Our data suggest that so-called "improved" stove reduce CO2 equivalent emission (i.e., climate benefits) by 20-30% compared to traditional stoves.
机译：炉灶排放是全球黑碳的主要来源，但由于对光学特性的了解有限，因此不确定其对气候的影响。我们测量了32种不同炉灶/燃料组合所产生的新鲜气溶胶排放物的光学特性，这些范围从简单的明火到高性能的强制通风炉灶。在实验室使用火力扫描协议对火炉进行了测试，该协议可测量整个功能火力范围内的排放。在整个火力范围内，测得的光学性能差异很大。这种可变性与黑碳与颗粒物质量比（BC / PM）密切相关。相比之下，炉具类型，燃料和操作指标对光学性能的预测较差。我们开发了质量吸收截面，吸收埃指数和新鲜排放物的单散射反照率随BC / PM变化的参数化方法。从实验室数据中得出的这些参数化参数也再现了先前报道的真实烹饪排放物光学特性的现场测量结果。我们将增强的光学特性的新参数化与已发布的排放数据结合起来，以估算不同炉灶技术的排放的直接辐射效应。我们的数据表明，与传统炉灶相比，所谓的“改进型”炉灶将二氧化碳当量排放量减少20-30％。

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