Preprints
https://doi.org/10.5194/egusphere-2022-873
https://doi.org/10.5194/egusphere-2022-873
 
20 Sep 2022
20 Sep 2022
Status: this preprint is open for discussion.

Global Nitrogen and Sulfur Budgets Using a Measurement-Model Fusion Approach

Hannah J. Rubin1, Joshua S. Fu1,2, Frank Dentener3, Rui Li4, Kan Huang5, and Hongbo Fu5 Hannah J. Rubin et al.
  • 1Department of Civil and Environmental Engineering, University of Tennessee, Knoxville, TN, 37996, USA
  • 2Computational Earth Science Group, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
  • 3European Commission, Joint Research Centre, Ispra, Italy
  • 4Ministry of Education Key Laboratory for Earth System Modeling, Department of Earth System Science, Tsinghua University, Beijing, 100084, China
  • 5Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP3), Department of Environmental Science and Engineering, Fudan University, Shanghai, 200433, China

Abstract. Global reactive nitrogen (N) deposition has more than tripled since 1860 and is expected to remain high due to land use changes and fossil fuel consumption. We update the 2010 global deposition budget for nitrogen and sulfur with new regional wet deposition measurements from Asia, improving the ensemble results of eleven global chemistry transport models from the second phase of the United Nation’s Task Force on Hemispheric Transport of Air Pollution (HTAP-II). The observationally adjusted global N deposition budget is 130 Tg-N, representing a 10 % increase and the adjusted global sulfur deposition budget is 80 Tg-S, representing no change. Our study demonstrates that a global measurement-model fusion approach can substantially improve N and S deposition model estimates at a regional scale and represents a step forward toward the World Meteorological Organization’s goal of global fusion products for accurately mapping harmful air pollution.

Hannah J. Rubin et al.

Status: open (until 01 Nov 2022)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on egusphere-2022-873', Anonymous Referee #1, 26 Sep 2022 reply
  • RC2: 'Comment on egusphere-2022-873', Anonymous Referee #2, 30 Sep 2022 reply

Hannah J. Rubin et al.

Hannah J. Rubin et al.

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Short summary
We update the 2010 global deposition budget for nitrogen and sulfur with new regional wet deposition measurements, improving the ensemble results of eleven global chemistry transport models from HTAP-II. Our study demonstrates that a global measurement-model fusion approach can substantially improve N and S deposition model estimates at a regional scale and represents a step forward toward the WMO’s goal of global fusion products for accurately mapping harmful air pollution.