The Euro- and City-Delta model intercomparison exercises P. Thunis, K. Cuvelier Joint Research...
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![Page 1: The Euro- and City-Delta model intercomparison exercises P. Thunis, K. Cuvelier Joint Research Centre, Ispra.](https://reader035.fdocuments.net/reader035/viewer/2022062718/56649eb45503460f94bbcd05/html5/thumbnails/1.jpg)
The Euro- and City-Delta model intercomparison exercises
P. Thunis, K. Cuvelier
Joint Research Centre, Ispra
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EuroDeltaA project to evaluate uncertainty in modelling source-
receptor relationships used in air quality policy
Organised by:
JRC-IES, IIASA, EMEP, TNO-MEP, CONCAWE, INERIS, SMHI, FUB
Objectives:
• Do regional air quality models produce a consistent response to emission changes ?
• What is the range of modelled responses to emission changes ?
• What are confidence limits for the modelling used in policy ?
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CityDeltaA project to include sub-grid effects into a Europe-
wide health impact assessment for PM and O3
Organised by:
JRC-IES, IIASA, EMEP, TNO-MEP, CONCAWE
Objectives: Identify systematic differences (deltas) between rural and urban background AQ (scale)
• How these delta vary in terms of urban emissions?• How these delta vary accross cities?• How these delta vary accross models?• How these delta vary accross pollutants ?
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City-Delta CitiesCity-Delta Cities:: Comparisons are conducted for a number of European cities with distinct differences in climatic conditions, geographical settings, and emission densities.
London
Paris
Prague
Berlin
Copenhagen
Katowice
Milan
Marseille
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Participating Models
EURODELTA
CHIMERE
REM
EMEP
MATCH
LOTOS
TM5
CITYDELTA
CALGRID MUSE
CAMX TRANSCHIM
MUSCAT EUROS
OFIS MOCAGE
STEM REM
LOTOS CHIMERE
EPISODE EMEP
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Emission Scenarios
EURODELTA
• European Wide reductions (from 2000 to 2020 with 2 sets of meteorology)
• Beyond 2020 specific NOx, Sox, NH3 and VOC reductions for Italy, Germany, France and Sea-areas
• In total 28 emission scenarios
• Current phase: 55 additional scenarios (5 groups)
CITYDELTA
8 emission scenarios for each city
• 1999 Base Case• 2010 Current Legislation• NOx, VOC, PM25, PMc
Maximum Feasible reductions
• Current Phase: 7 cities for 4 scenarios (3-4 modelling groups)
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• Input data: EMEP emissions, Met year 1999• Area Covered: Europe (resolution 50 km)• Output: Surface fields (hourly, daily and monthly) organised in monthly files and reported on individual model grid. Interpolation to Lat-lon and EMEP
ED: Input / Output
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Data Management
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The Euro- & City-delta tool
Original Participant data (~Tb)
Pre-processing (JRC)
Processed data (20 Gb) and graphical tool
available on Web
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Visualisation of raw monitoring data
• Various statistics: observation availability, mean, max, stddev,…• Only for ground stations up to now.
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Comparison of measurements/model results
• Numerous statistics available including Taylor, AOT, SOMO, scatter-plots…• Comparison of different model versions, ENSEMBLE approach• restricted to ground stations
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Visualisation of input emission data
• Sector, pollutant, country/region-wise visualisation• No time or species disaggregation.
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2-D visualisation
• Selected statistics available for 2-D monthly surface maps• Comparison of different model versions, ENSEMBLE approach but pre-calculated
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Mean Ozone
Max ensemble min
Countries
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OBSERVATIONSMODEL 1 MODEL 2 MODEL 3, …
4-D Fields: Meteo, Chemistry, Aerosols
Pre-processing (Window Interface)ASCII-BIN CDF
MONIT
Observations Overview
SHOWALL
4D model data analysis
XZ, YZ, SZ, XY Sections
Comparison with obs.
VALID
Statistical Module Multi-models
(obs .vs. models)
EMIS
Emissions QAQCRatio checks
EMISSIONS
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Conclusions
- Surface field- Control of ext parameters (biogenics, BC, …) - 2-D functions only for pre-defined variables
+ Common interactive graphical tool + Common input (emission, meteo) as far as possible)
? Data transfert? Data interpolation? Grid structure (e.g. emission release height)