The Warming Climate Aggravates Atmospheric Nitrogen Pollution in Australia

Author:

Sun Yi1ORCID,Gu Baojing12ORCID,van Grinsven Hans J. M.3,Reis Stefan45ORCID,Lam Shu Kee2,Zhang Xiuying6,Chen Youfan7,Zhou Feng8,Zhang Lin7,Wang Rong8,Chen Deli2,Xu Jianming1ORCID

Affiliation:

1. College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China

2. School of Agriculture and Food, The University of Melbourne, Melbourne, Victoria 3010, Australia

3. PBL Netherlands Environmental Assessment Agency, PO BOX 30314, 2500 GH The Hague, Netherlands

4. UK Centre for Ecology & Hydrology, Bush Estate, Penicuik, Midlothian EH26 0QB, UK

5. University of Exeter Medical School, European Centre for Environment and Health, Knowledge Spa, Truro TR1 3HD, UK

6. International Institute for Earth System Science, Nanjing University, Nanjing 210023, China

7. Laboratory for Climate and Ocean–Atmosphere Studies, Department of Atmospheric and Oceanic Sciences, School of Physics, Peking University, Beijing 100871, China

8. College of Urban and Environmental Sciences, Peking University, Beijing 100871, China

Abstract

Australia is a warm country with well-developed agriculture and a highly urbanized population. How these specific features impact the nitrogen cycle, emissions, and consequently affect environmental and human health is not well understood. Here, we find that the ratio of reactive nitrogen (Nr) losses to air over losses to water in Australia is 1.6 as compared to values less than 1.1 in the USA, the European Union, and China. Australian Nr emissions to air increased by more than 70% between 1961 and 2013, from 1.2 Tg N yr-1 to 2.1 Tg N yr-1. Previous emissions were substantially underestimated mainly due to neglecting the warming climate. The estimated health cost from atmospheric Nr emissions in Australia is 4.6 billion US dollars per year. Emissions of Nr to the environment are closely correlated with economic growth, and reduction of Nr losses to air is a priority for sustainable development in Australia.

Funder

Natural Environment Research Council

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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