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首页> 外文会议>Specialty Conference on Emission Inventory: Living in a Global Environment Vol.1 Dec 8-10, 1998, New Orleans, LA >Comparison of Patterns of Ammonium Concentration in Precipitation to Ammonia Emission Estimates
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Comparison of Patterns of Ammonium Concentration in Precipitation to Ammonia Emission Estimates

机译：降水中氨浓度模式与氨排放估算值的比较

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摘要

Global emission estimates of ammonia have been published, with the most recent being the Bouwman et al.(1997) results. Some aspects of these emission estimates are compared to the national precipitation quality database produced by the National Atmospheric Deposition Program/National Trends Network (NADP/NTN). In particular, since ammonia emissions resulting from livestock production is estimated to be the largest source category, the spatial and temporal patterns for this source category are compared to the NADP/NTN ammonium data. The NADP/NTN began in 1978 with fewer than 25 sites and grew steadily to become a network of 200 sites by 1985. The database has about a six-month time lag so data through 1997 are currently available. Rain and snow samples are collected weekly, on Tuesday morning, at network sites across the USA. The same equipment and procedures are used at all the sites. All samples are sent to a central laboratory, at the Illinois State Water Survey and analyzed for inorganic ions including ammonium. The spatial pattern of ammonia emissions will be compared to the precipitation concentration patterns, as opposed to deposition patterns. The preliminary examination suggests that there is general consistency between the spatial and temporal patterns in ammonia emissions from livestock and the ammonium concentration in precipitation. Much additional research is needed including an examination of the patterns and trends for the other major ammonia emission sources.
机译：全球氨气排放量的估算已经公布，最新的是Bouwman等人（1997年）的结果。将这些排放估算的某些方面与国家大气沉积计划/国家趋势网络（NADP / NTN）生成的国家降水质量数据库进行了比较。特别是，由于估计牲畜生产产生的氨排放量是最大的来源类别，因此将该来源类别的时空分布图与NADP / NTN铵数据进行了比较。 NADP / NTN始于1978年，当时只有不到25个站点，并稳步增长，到1985年已发展成为由200个站点组成的网络。该数据库大约有六个月的时间滞后，因此目前可以获取到1997年的数据。每周二，星期二上午，在美国各地的网络站点收集雨雪样本。所有站点都使用相同的设备和程序。所有样品都被送往伊利诺伊州水调查局的中央实验室，并分析了包括铵在内的无机离子。与沉积模式相反，将氨排放的空间模式与降水浓度模式进行比较。初步检查表明，牲畜氨气排放的时空格局与降水中铵盐浓度之间存在总体一致性。还需要进行大量其他研究，包括检查其他主要氨排放源的模式和趋势。

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