...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Atmospheric chemistry and physics >A sea-state based source function for size- and composition-resolved marine aerosol production
【24h】

A sea-state based source function for size- and composition-resolved marine aerosol production

机译：基于海洋状态的源函数，用于解析尺寸和成分的海洋气溶胶生产

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

A parameterization for the size- and composition-resolved production fluxes of nascent marine aerosol was developed from prior experimental observations and extrapolated to ambient conditions based on estimates of air entrainment by the breaking of wind-driven ocean waves. Production of particulate organic carbon (OC_(aer)) was parameterized based on Langmuir equilibrium-type association of organic matter to bubble plumes in seawater and resulting aerosol as constrained by measurements of aerosol produced from productive and oligotrophic seawater. This novel approach is the first to parameterize size- and composition-resolved aerosol production based on explicit evaluation of wind-driven air entrainment/detrainment fluxes and chlorophyll-α as a proxy for surfactants in surface seawater. Production fluxes were simulated globally with an eight aerosol-size-bin version of the NCAR Community Atmosphere Model (CAM v3.5.07). Simulated production fluxes fell within the range of published estimates based on observationally constrained parameterizations. Because the parameterization does not consider contributions from spume drops, the simulated global mass flux (1.5 × 10~3 Tg y~(-1)) is near the lower end of published estimates. The simulated production of aerosol number (1.4 × 106 m~(-2) s~(-1)) and OCaer (29 Tg C y~(-1)) fall near the upper end of published estimates and suggest that primary marine aerosols may have greater influences on the physicochemical evolution of the troposphere, radiative transfer and climate, and associated feedbacks on the surface ocean than suggested by previous model studies.
机译：根据先前的实验观测结果，对新生的海洋气溶胶的尺寸和成分分解的生产通量进行了参数化，并根据由风驱动的海浪破裂引起的空气夹带估算，将其推断为环境条件。基于Langmuir平衡类型的有机物与海水中气泡羽流的联系，对颗粒有机碳（OC_（aer））的产生进行了参数化，并通过测量生产性和贫营养性海水产生的气溶胶来限制所产生的气溶胶。这种新方法是第一个基于显式评估风驱动的夹带/引流通量和叶绿素-α替代表层海水中表面活性剂的参数化尺寸和成分分辨气溶胶产量的方法。使用NCAR社区大气模型（CAM v3.5.07）的八个气溶胶大小箱版本在全球范围内模拟了生产通量。基于观测约束的参数化，模拟的生产通量在已发布的估计值范围内。因为参数化未考虑泡沫滴的贡献，所以模拟的全局质量通量（1.5×10〜3 Tg y〜（-1））接近已发布估计的下限。模拟产生的气溶胶数量（1.4×106 m〜（-2）s〜（-1））和OCaer（29 Tg C y〜（-1））接近已公布估计值的上限，表明初级海洋气溶胶可能对对流层的物理化学演化，辐射传递和气候以及对表层海洋的相关反馈的影响比以前的模型研究建议的要大。

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