International Workshop on the Nitrogen Cycle

Global Atmosphere Watch International workshop

on Nitrogen Cycle

University of York, UK

13-14 April 2016

Objective

The objective of the N cycle workshop was to establish the dialog between the expert groups on GAW that include research related to N contacting substances (reactive gases, greenhouse gases, aerosols, total deposition, and marine environment) and establish collaboration with the other international programs and initiatives involved in global N cycle research.

Draft meeting report

Agenda with presentations

Wednesday, 13 April

13:30 – 13:40	Welcome and meeting objectives	James Lee, University of York Oksana Tarasova, WMO
	Session 1 Introductions and setting up the scene	Chair: Oksana Tarasova
13:40-13:55	Perspective of SSC on cross-cutting activities and N cycle research	Paul Monks, Uni of Leicester, GAW SSC
13:55-14:10	Reactive Nitrogen in LRTAP Convention	CLÁUDIA Marques dos Santos CORDOVIL, Instituto Superior de Agronomia, Universidade de Lisboa
14:10-14:25	Added value of complementary observations of Nitrogen species – example of Cape Grim	Ian Galbally, CSIRO
	Session 2 Nitrogen in the group of Reactive Gases	Chair: Oksana Tarasova
14:25-14:40	Overview of N components addressed in the GAW Reactive Gases programme	Christian Plass-Dülmer, DWD
14:40-14:55	NOx/NOy observations at Cape Verde	James Lee/Chris Reed University of York
14:55-15:10	MAX-DOAS observations of NO2 in NDACC: status and perspectives	Francois Hendrick Royal Belgian Institute for Space Aeronomy
15:10-15:40	Coffee break
	Session 3 Nitrogen in the group of Greenhouse Gases	Chair: Ian Galbally
15:40-15:55	N2O observations and analysis - prospective of GHG SAG	Brad Hall NOAA
	Session 4 Reactive nitrogen chemistry and exchanges over the ocean and snow	Chair: Ian Galbally
15:55-16:05	GESAMP Working Group 38 and its oceanic nitrogen deposition studies	Robert Duce, Texas A&M University
16:05-16:20	Atmospheric Nitrogen Deposition to the Oceans: Observation- and Model-Based Estimates	Alex Baker , University of East Anglia
16:20-16:35	Atmospheric Nitrogen Inputs to the Oceans and their Impact	Tim Jickells, University of East Anglia
16:35-16:50	Reactive nitrogen chemistry in snow-covered environments	Detlev Helmig, INSTAAR, University of Colorado
	Session 5 Nitrogen in aerosols	Chair: Ian Galbally
16:50-17:05	NO3/NH3 behavior between gas and aerosol phases	Thanos Nenes, Georgia Tech, School of Earth and Atmospheric Sciences
17:05-17:20	NO3- and NH4+ in aerosol from ACSM and filter at Hohenpeissenberg	Robert Holla, DWD
17:40-18:00	Formulation of key discussion points	Lead by Paul Monks

Thursday, 14 April

	Session 6 Deposition of Nitrogen	Chair: Alastair Lewis
9:00-9:15	Deposition on N – prospective of the SAG TAD	Corinne Galy-Lacaux Laboratoire d’Aérologie CNRS HDR
9:15-9:30	Impacts of N deposition	Kevin Hicks, University of York
	Session 7 N cycle in agriculture and ecosystems	Chair: Alastair Lewis
9:30-9:45	N fluxes from the agricultural sector	Elizabeth Pattey Agriculture and Agri-Food Canada
9:45-10:00	How well do we understand and describe drivers of change of N cycle in natural and agro-ecosystems	Simona Castaldi, Second University of Naples
10:15-10:30	Ammonia metrology	Dr Christine Braban, CEH
10:30-11:00	Coffee break
	Session 8 Integration and Discussions	Chair: Mark Sutton
11:00-11:20	International Nitrogen Management Initiative	Howard, Clare/ Mark Sutton , Center for Ecology and Hydrology, NERC, UK
11:20-12:30	Discussions • Gap analysis of N observations in GAW – what are the missing elements • Products that can be delivered by GAW community • Potential collaboration to be established (potential contribution from agricultural community on e.g. ammonia, or metrology community with ammonia) Other points identified on Wed	Lead by Ian Galbally and Mark Sutton
12:30-13:30	Lunch break
13:30-15:00	Continuation of discussions Recommendations - potential pilots/activities - presentation of the meeting outcome at the 7th International Nitrogen Conference (INI 2016)	Lead by Ian Galbally and Mark Sutton
15:00	Coffee break and meeting closure