10 May 2021

10 May 2021

Review status: a revised version of this preprint is currently under review for the journal ESSD.

Nitrogen deposition in the UK at 1 km resolution from 1990 to 2017

Samuel James Tomlinson1, Edward John Carnell2, Anthony J. Dore2, and Ulrike Dragosits2 Samuel James Tomlinson et al.
  • 1UKCEH, Lancaster Environment Centre, Library Avenue, Bailrigg, LA1 4AP
  • 2UKCEH, Bush Estate, Penicuik, Midlothian, EH26 0QB

Abstract. An atmospheric chemistry transport model (FRAME) is used here to calculate the UK N deposition for the years 1990–2017. Reactive nitrogen (N) deposition is a threat that can lead to adverse effects on the environment and human health. In Europe, substantial reductions in N deposition from nitrogen oxide emissions have been achieved in recent decades, this paper quantifies reductions in UK N deposition following the N emissions peak in 1990. In the UK, estimates of N deposition are typically available at a coarse spatial resolution (typically 5 km × 5 km grid resolution) and it is often difficult to compare estimates between years due to methodological changes in emission estimates. Through efforts to reduce emissions of N from industry, traffic, and agriculture, this study predicts that UK N deposition has reduced from 465 kt N in 1990 to 278 kt N in 2017. However, as part of this overall reduction, there are non-uniform changes for wet and dry deposition of reduced N (NHx) and oxidised N (NOy). In 2017, it is estimated 59 % of all N deposition is in the form of reduced N, a change from 35 % in 1990. This dataset uses 28 years of emissions data from 1990 to 2017 to produce the first long-term dataset of 28 years of N deposition at 1 km × 1 km resolution in the UK.

Samuel James Tomlinson et al.

Status: final response (author comments only)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on essd-2021-112', Anonymous Referee #1, 12 Jun 2021
    • AC1: 'Reply on RC1', Sam Tomlinson, 06 Sep 2021
  • RC2: 'Comment on essd-2021-112', Anonymous Referee #2, 20 Jun 2021
    • AC2: 'Reply on RC2', Sam Tomlinson, 06 Sep 2021

Samuel James Tomlinson et al.

Data sets

Nitrogen deposition in the UK at 1km resolution, 1990-2017 Samuel J. Tomlinson, Edward J. Carnell, Anthony J. Dore, Ulrike Dragosits

Samuel James Tomlinson et al.


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Short summary
Nitrogen (N) may impact the environment in many ways and estimation of its deposition to the terrestrial surface is of interest. N deposition data has not, before now, been generated on a high resolution (1 km × 1 km) over a long time series in the UK. This study concludes that N deposition has reduced by ~40 % from 1990. The impact of these results allows analysis of environmental impacts at a high spatial and temporal resolution, using a consistent methodology and consistent set of input data.