Barnsdale Executive Summary
Frontiers in the Transport and Transformation of Pollutants
Executive Summary
Full Report (2.2 MB PDF file)
The Barnsdale Expert Meeting on Frontiers in Transport and Transformation of Pollutants was the first workshop of the newly formed T&TP project, one of the four jointly executed research programmes of ACCENT (http://www.accent-network.org/). The purpose of the meeting was to review the state of understanding in four key research areas and so produce recommendations for future activities for ACCENT-T&TP.
Each the four working groups identified a variety of key issues in their respective areas and made a number of recommendations for future activities within T&TP and in ACCENT, which are summarised below.
Group 1: Chemical Complexity
The group recommended the following.
a. Formation of an expert group on the nitrogen cycle with the aim of writing an overview paper to be led by David Fowler.
b. Preparation of a summary of the main uncertainties in the formation of SOA (secondary organic aerosol) from the gas phase to be led Michael. E. Jenkin.
c. Compilation a catalogue of past and upcoming campaigns (on website) to promote interactions.
d. To "add value" to future campaigns by enabling complementary measurements for enhanced system understanding, in particular between gas phase, aerosol, nitrogen cycling, biological and deposition groups.
e. To facilitate visits and meetings between disciplines.
f. To encourage MCM - aerosol developments.
g. To assimilate the knowledge from past chamber experiments and make it more accessible to scientists.
Group 2: Long-range Transport of Pollutants
The group recommended the following.
a. Existing data that could be used to examine LRT should be collected together to create relevant database. A workshop including participants from previous EU projects (e.g. TRADEOFF) and data centres as well as end users should be the first step to formulating a strategy to achieve this. T&TP or the ACCENT Data Task might then be able to provide the resources required.
b. A workshop would be useful to identify measurement requirement (where, what, frequency of measurements). This could be linked to IGACO. ACCENT could provide support through the Infrastructure Task.
c. A workshop to plan an Arctic experiment which would bring together experts in Arctic research and experts in LRT.
d. Encourage interaction with the ACCENT Aerosols Activity, which can provide much advancement in the characterisation of aerosols, the ACCENT Modelling Task which could provide improvements in modelling techniques and the ACCENT Emissions Activity which should provide improved model inputs.
Group 3: Chemical Weather
The group recommended the following.
a. Organisation of a workshop or similar meeting with discussion groups on chemical weather. It would probably be wise to choose a subset of the issues discussed within the group to focus on at such a workshop, now that this group has take the task of defining the overall framework.
b. Surveying the atmospheric sciences community to develop a listing of the currently operational (and standby ) chemical weather forecast systems, subdivided into types (by scales and applications). A website with such a catalogue including links to the various operational systems would probably be of great service to the community.
c. To link, via T&TP, with the chemistry-climate group to define metrics, as well as provide a mechanism for linking to the public in terms of understanding the relative value of different metrics (e.g. PM levels, visibility, etc.).
Group 4: Chemistry and Climate Interactions
The group recommended the following.
a. A model experiment on convection (David Stevenson); to elucidate:
- how changing climate will affect convection;
- the impact of NOx emissions from lightning: and
- the impact of convection on chemistry.
b. A workshop on the nitrogen cycle (David Fowler); (see Group 1)
c. A model experiment on natural variability, studying, perhaps, the El Nino/ La Nina phenomena, or the North Atlantic oscillation. There are possible links here to the RETRO project led by Martin Schultz and also AMMA.
d. To cooperate on emissions with the ACCENT - emissions/GEIA group led by Claire Granier.
e. Aerosols: To cooperate in the completion of the AEROCOM exercise in 2005 in evaluating and reducing uncertainties in the aerosol direct climate effect (Hans Feichter and Frank Dentener are the contact persons).
f. To explore the area of multiphase chemistry with a view to it being an ACCENT topic since it appears to be of increasing interest. (Maria Kanakidou)
g. Metrics: An effort should be made to define better and more representative metrics of climate change, air pollution and hydrological cycle perturbations that will also provide regional information (Ivar Isaksen and Frank Dentener are the contact persons).
The T&TP steering group will review all these recommendations and decide with which to proceed. The recommendations will also be brought to the attention of the ACCENT community.
oOo
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Project coordinator: Consiglio Nazionale delle Ricerche. coordinator@accent-network.org Project Office: Università di Urbino. project.office@accent-network.org Web-coordinator: Norwegian Institute for Air Research. mail@accent-network.org ACCENT Disclaimer |