1. What are the main development lines of the global system
(with a focus on aerosol aspects)?
Olivier Boucher, LMD, CNRS

2. CAMS43 consortium
Four partners in the CAMS43 Consortium
CNRS – IPSL – Laboratoire de Météorologie Dynamique
University of Leeds
Météo-France - CNRM
Université de Lille – Laboratoire d’Optique Atmosphérique

3. Who are we ? Investigators
Prime Investigator, WP3,4,5 co-manager: Olivier Boucher (CNRS-IPSL-LMD) Service manager, WP2 manager, WP1,3,5 co-manager: Samuel Rémy (CNRS-IPSL-LMD) WP1 co-managers: Graham Mann (University of Leeds), Pierre Nabat (Météo-France – CNRM) WP4 co-manager: Michael Schulz (MetNo) WP1 contributors: Martine Michou, Matthieu Plu and Jonathan Guth (Météo-France-CNRM) + 24 months contract (Météo-France CNRM) + Sarah Shalcross (PhD, Uleeds) [+Tim Keslake (Uleeds)] WP3 contributors: Software engineer (CNRS-IPSL-LMD, 18 months) WP4 contributor: Jan Griesfeller (MetNo) Consultants: Laurent Menut (WP4 – aerosol suspension) Philippe Dubuisson (WP3 – radiative transfer) Experts we can talk to: D. Tanré (LOA), O. Dubovik (LOA), K. Carslaw (Leeds), F. Hourdin (LMD)

4. The aerosol models
C-IFS-AER is the current pre-operational aerosol model, also for the forthcoming reanalysis
Twelve prognostic variables:
Three bins sea-salt (0.03 – 0.5 – 0.9 – 20 µm)
Three bins dust (0.03 – 0.55 – 0.9 – 20 µm)
Black carbon (hydrophylic and hydrophobic)
Organic Matter (hydrophylic and hydrophobic)
SO2 -> SO4
Main physical processes represented:
emissions, fire emissions being interactive (with the GFAS system)
horizontal and vertical transport
vertical diffusion through turbulence
dry deposition
sedimentation
scavenging by large scale and convective precipitation
aerosol optics

5. The aerosol models
C-IFS-GLOMAP is one of several model frameworks that include GLOMAP
GLOMAP-bin : original bin-resolved version in TOMCAT CTM
GLOMAP-mode: in UM-UKCA, TOMCAT CTM & ECMWF
GLOMAP has been integrated into cycle 40R3 of C-IFS and optimized since then.

6. WP1: modelling aspects Task 1.1: Improvement of secondary aerosols
Development and validation of a nitrate-ammonium module for C-IFS-AER and validation of the nitrate component of C-IFS-GLOMAP
Improvement of SO2 to SO4 conversion process
Improvement of secondary organic aerosol production processes
Deliverable
Main contributor
Title
Due
Effort in man months
D1.1
CNRS-IPSL-LMD with assistance from the University of Leeds
Development of a nitrate and ammonium module in C-IFS-AER and validation of the nitrate component of C-IFS-GLOMAP. M9 6
D1.2
MF-CNRM with assistance from CNRS-IPSL-LMD for the implementation in C-IFS
Improvement of the SO2 to SO4 conversion processes for C-IFS-AER and C-IFS GLOMAP
M19
D1.3
CNRS-IPSL-LMD
Improvement of the SOA sources of C-IFS M6
4.4

7. WP1: modelling aspects Task 1.2: Improvement of the aerosol sources
Improvement of dust emissions and tests with more bins in C-IFS-AER
Improvement of the dust, SO2 and BB sources of C-IFS-GLOMAP
Improvement of the sea-salt formation processes in C-IFS-AER
Deliverable
Main contributor
Title
Due
Effort in man months
D1.4
MF-CNRM with assistance from CNRS-IPSL-LMD for the implementation in C-IFS
Improvement of dust sources in C- IFS-AER and tests with more bins
M13 7
D1.5
CNRS-IPSL-LMD with assistance from University of Leeds
Improvement of the dust, SO2 and biomass burning sources of C-IFS- GLOMAP 5
D1.6
Improvement of the sea-salt sources in C-IFS-AER and C-IFS- GLOMAP M9 6

8. WP1: modelling aspects
Task 1.3: Improvement of the aerosol removal processes
Adaptation and implementation of a new diagnostic scheme for the scavenging in C-IFS-AER and C-IFS-GLOMAP
Development and validation of a re-evaporation parameterization
Deliverable
Main contributor
Title
Due
Effort in man months
D1.7
MF-CNRM with assistance from CNRS-IPSL-LMD for the implementation in C-IFS
Adaptation and implementation of a new scheme for scavenging in C- IFS-AER and C-IFS-GLOMAP
M25 7
D1.8
Development and validation of a re-evaporation parameterization
M28 6

9. WP1: modelling aspects
Task 1.4: Study of the impact of resolution on aerosol forecasts Task 1.5: Validation of the stratospheric component of C-IFS-GLOMAP Task 1.6: Targeted improvements as requested by the Global Service Provider or users
Deliverable
Main contributor
Title
Due
Effort in man months
D1.9
CNRS-IPSL-LMD with assistance from MF-CNRM
Study of the impact of resolution on aerosol forecasts (report/code if needed)
M20- M36 5
D1.10
CNRS-IPSL-LMD with assistance from University of Leeds
Validation of the stratospheric component of C-IFS-GLOMAP
M24 19
D.11
CNRS-IPSL-LMD
Targeted improvements as requested by the Global Service Provider or users
Depend ing on the GSP 2

10. Sulphate mass mixing ratio (µg/kg)
Examples
PM10
Sulphate mass mixing ratio (µg/kg)

11. Guided by scores

12. WP3: data assimilation
Task 3.1: Implementation of a “toy” 1D-Var retrieval algorithm of visible AOD
Task 3.2: Selection of a radiative transfer code and adaptation into the retrieval algorithm
Task 3.3: Development of a tangent linear and of an adjoint code of the radiative transfer code
Task 3.4: Multi-wavelength retrieval
Task 3.5: Test and validation of the final version of the retrieval algorithm with MODIS and VIIRS reflectances

13. WP4: service evolution
Task 4.1: Assistance to ECMWF in setting up / running an aerosol alert service
Continued aerosol alert computation few hours after IFS data become available, “Aerosol anomaly against climatology” (when ECMWF develops own system, run as backup and testing system)
Explore needs and adapt (clean air alert, surface PM alert, long range transport alert, dust / biomass burning alert, research condition alert, solar radiation blocking event ?)
Redefine threshold levels to achieve more true positive warnings for different alerts
Explore impact of climatology used on alert triggering (eg test new IFS reanalysis when available)
Explore fine scale aerosol fields from CAMS61 for PM alerts Europe, understand difference to IFS based PM alerts
Test impact of new aerosol IFS versions on alert skill
Develop Contingency table verification (new data: aerosol type, clean air, PM)

14. WP4: service evolution
Task 4.1: Assistance to ECMWF in setting up / running an aerosol alert service Task 4.2: Implementation of an aerosol re-suspension module in C-IFS
Deliverable
Main contributor
Title
Due
Effort in man months
D4.1
MetNo
Aerosol alert service: implementation/improvement and scores (report)
M8- M20- M34 10
D4.2
CNRS-IPSL-LMD
Implementation of particulate matter resuspension in C-IFS
M20 5