Material and méthods

Remote sensing Observations

From Space :

  • POLDER/PARASOL , potentially 3MI/METOP: global information about aerosol loading, particle composition, shape, etc.
  • CALIPSO : information on aerosol vertical distribution
  • FCI/METEOSAT : information on diurnal aerosol variability
  • TROPOMI/Sentinel 5P, OMPS/SUOMI-NPP, OMI/Aura, SCIAMACHY/ENVISAT : information on SO2 column amoun
  • IASI/METOP : information on SO2 column amount, SO2 altitude and ash content
  • MODIS/Terra or Aqua : information on aerosol load and ground thermal activity
  • MSG/SEVIRI, HIMAWARI/AHI, GOES/ABI : high temporal resolution information on the integrated gas and particle column as well as surface thermal activity.

From the ground :

  • Aerosol Robotic Network (AERONET) : column integrated properties of aerosols
  • LIDAR observations (SNO-PHOTONS, EARLINET, ACTRIS) : information on aerosol vertical distribution and properties (backscatter and extinction coefficients, particle linear depolarization ratio)

In-situ observations :

  • Air quality data (Atmo France, EMEP) : in-situ ground-level mass concentration of gas (SO2 and other species)/particle (PM10 and PM2.5 fractions)
  • Aerosol Chemical Speciation Monitor (ACSM) : chemical composition of non-refractory submicron aerosols (PM1 fraction)
  • SMPS measurements (Scanning Mobility Particle Sizer): Counting and size distribution of submicron particles

In addition to the use of remote sensing or in-situ observations on the ground from stations belonging to national or international networks, various measurements listed above (LIDAR, photometry, ACSM, SO2 analyzer, SMPS, etc.) come from the ATOLL (ATmospheric Observations in liLLe) multi-laboratory platform at the University of Lille.

Modeling :

  • Regional chemistry-transport model (CHIMERE)
  • Global aerosol transport model (GEOS_CHEM)
  • MESO-NH non-hydrostatic mesoscale atmospheric model
  • Source-receptor modeling and statistical modeling coupled to local wind or back-trajectory analyses
  • Type Simulations « LES » (Large-Eddy Simulations)

Inverse modeling :

  • Global aerosol transport model, adjoint mode (GEOS_CHEM)
  • Inverse modeling using the direct regional chemistry-transport model CHIMERE

Remote sensing inversion :

  • GRASP (Generalized Retrieval of Aerosol and Surface Properties)

Ongoing studies
Scientific objectives and publications