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Future developments in CHIMERE

Future developments in CHIMERE. General objectives. Research : More realism in physics Operational : higher accuracy. Radiation/clouds/aerosols Convection Secondary Organic Aerosols Biosphere interface Chemistry Saharan dust Code structure/language…. Weakest points.

jana-barlow
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Future developments in CHIMERE

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  1. Future developments in CHIMERE

  2. General objectives • Research: More realism in physics • Operational: higher accuracy • Radiation/clouds/aerosols • Convection • Secondary Organic Aerosols • Biosphere interface • Chemistry • Saharan dust • Code structure/language… Weakest points

  3. Radiation/Photolysis • Include TUV actinic flux calculation within model iterations in order to incorporate 3D cloud effects (cloud albedo, absorption). • Also will help couple aerosols and photolysis • Need of a « fast » version of TUV, with photolysis deduced from a few (3-4) wavelengths. • STATUS: first tests OK, a lot of work to be done

  4. Convection • Inclusion of the Kerry Emmanuel scheme for mass-flux transport due to deep convection  improve simulation for tropical countries. • Inclusion of a PBL mass-flux vertical mixing scheme.

  5. Chemistry • Inclusion of other chemical mechanisms, richer in higher alcanes and more reactive species: SAPRC, RACM, Szopa&Aumont, … • Update of constants for MELCHIOR • Secondary organics (see B Bessagnet’s talk)

  6. Biosphere interface • Improve NOx biogenic emissions from INRA collaboration • Biogenic emissions from NATAIR EU project • Coupling with a more sophisticated biosphere model (ORCHIDEE?)

  7. Other foreseenable developments • Model version with 1/2 hemisphere, US, Sahel, Europe • More general default emission interface

  8. Agenda • V200510: Netcdf interface+F95 recoding, improved NO biogenic emissions, radiation • V200603: Saharan dust merged, convection, SOA, Atlantic version

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