Global Monitoring of Nitrogen Isotopes in Atmospheric Waters

Closed for proposals

Project Type

Coordinated Research Project

Project Code

F32008

CRP

2209

Approved Date

7 December 2017

Status

3 - Active - Ongoing

Start Date

28 May 2018

Expected End Date

28 May 2022

Participating Countries

Australia
Belgium
Brazil
China
Costa Rica
Cuba
Estonia
Ghana
Greece
India
Italy
Kenya
Singapore
Sri Lanka
Thailand
United States of America
Viet Nam

Description

The increasing production of food and energy worldwide has multiplied today's anthropogenic emissions of nitrogen compounds in the atmosphere, which are transported and deposited through precipitation on the terrestrial and aquatic systems. Disruption of N-balance, eutrophication in rivers and lakes, and stream acidification are a few of the negative consequences, when N-deposition exceeds the remediation capacity or critical load of the aquatic system. Environmental isotopes have been widely used not only to assess hydrological processes, but also to address water quality issues, such as nitrogen pollution. This CRP aims to determine the spatio-temporal distribution of nitrogen isotopes in precipitation as a potential source of nitrogen pollution of water resources, especially of aquatic systems sensitive to eutrophication stressors. This CRP aims to combine N-isotopes with atmospheric chemistry and hydrometeorological techniques to better understand wet deposition processes and to characterize the origin of inorganic nitrogen loadings. Overall, the CRP will aim at improving the capability and expertise among participating Member States in the use of environmental isotopes to assess impacts of nitrogen wet deposition on water quality and ecosystems.

Objectives

To improve capability and expertise among Member States in the use of environmental isotopes to better assess impacts of nitrogen wet deposition on water quality.

Specific objectives

Explore the use of N-isotopes in precipitation networks in order to determine spatial patterns of N-isotope values that can be used to determine the relative contribution of nitrogen wet deposition in the degradation of water systems.

Improve the application of N-isotopes combined with other isotope and chemistry substances to better define the origin of nitrogen in precipitation and evaluate the impact of nitrogen wet deposition on water resources and ecosystems.

Assess and improve the understanding and interpretation of nitrogen transformations related to wet deposition.

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