An Empirical Model for Dinitrogen Gas Emission from Inland Waters

• 作者: Ednaldo Oliveira dos Santos Elizabeth Sikar Marco Aurelio dos Santos
• 来源期刊: 大气和气候科学(英文)
• 学科: 医学
• 关键词: DINITROGEN Gas Emission INLAND WATERS BUBBLES DIFFUSION Nitrogen Cycle DENITRIFICATION
• 年，卷（期）: dqhqhkxyw_2019,（1）
• 页码范围: 1-25
• 页数: 25页
• 分类号: R73

摘要

The motivation to calculate this empirical model resulted from often observing—at the time disconcerting—excess dinitrogen gas (N2 concentration > background concentration) in bubble-gas emission samples, collected primarily for the purpose of carbon budget research, from Brazilian rivers and reservoirs sampled during roughly 100 field surveys lasting 4 days each on average and executed between years 2000 and 2012. We model the (serendipitously) measured dinitrogen gas above environmental concentration (N2aec) escaping in bubbles from Brazilian rivers as a function of dissolved nitrogen (N) in water. To this model, we mathematically add a pre-existing model of diffusively emitted denitrified dinitrogen (also as a function of dissolved N) from streams in the United States of America (USA). The resulting model predicts denitrified dinitrogen water-air emission from inland waters in the USA, China and Germany.