1 / 11

WP2 - Task 2.3 : Development of new modeling tools

WP2 - Task 2.3 : Development of new modeling tools Aerosol radiative effect on the Mediterranean climate : implication for solar energy. Samuel Somot (CNRM) Pierre Nabat (CNRM) Roma, July 2013. http://www.climrun.eu. Climate tools and products: Energy case study.

lee-winters
Download Presentation

WP2 - Task 2.3 : Development of new modeling tools

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. WP2 - Task 2.3 : Development of new modeling tools Aerosol radiative effect on the Mediterranean climate : implication for solar energy Samuel Somot (CNRM) Pierre Nabat (CNRM) Roma, July 2013 http://www.climrun.eu

  2. Climate tools and products: Energy case study • All case study (Morocco, Barcelona, Cyprus, Croatia): • Solar energy: • Variable: downward shortwave radiation (direct and diffuse) • Stakeholder need: improved solar radiation representation in climate models ... taken into account aerosols • Area: Mediterranean basin + case study • Temporal horizon: past climate and future climate (all) • Partners: ICTP, CNRM • State-of-the-art: • regional climate models include a poor representation of aerosols, often low-resolution (in space and time) climatology • Off-line regional chemistry models do exist but feedback on the radiation is not modelized

  3. Mediterranean climate and aerosols

  4. Mediterranean aerosols : strong variability at all scales Aerosol Optical Depth (AOD, 550 nm), MODIS (Aqua) Nabat et al. 2013, AMT

  5. A new 2003-2009 monthly-mean climatology • A new Mediterranean aerosol climatology (Nabat et al., 2013, AMT) • Usable for variability study (2003-2009) • Usable for driving any Med-CORDEX RCM (already tested in ALADIN)

  6. Aerosol radiative effet in ALADIN : 2003-2009 mean Direct effect: absorption and scattering of solar incident radiation Semi-direct: change in atmosphere circulation and cloud cover Indirect: not taken into account here Nabat et al. (in prep.)

  7. Aerosol radiative effet : long-term trend The brightening effect since the 80s: decrease in pollution (sulfate) in Europe leads to an increase in surface shortwave radiation Nabat et al., EGU 2013

  8. Aerosol radiative effet : daily variability • Implementation of a fully interactive dust scheme in ALADIN • Case study for 22-29 June 2012: dust event and its radiative impact • Operational forecasts of Mediterranean dust event for the Charmex field campaign in Summer 2013 (on-going) 27 June 24 June 29 June

  9. Aerosol radiative effet : daily variability Fès (Morocco) 23 June 2012 Mid-troposphere warming correlated with the maximum aerosol load Surface cooling (-1.5°C) Fès (Morocco), composite study over June-July 2012 A. Culot, E. Bruhier, Master thesis, 2013

  10. Aerosols are key players in Mediterranean climate variability • They strongly impact incident shortwave radiation at all the scales: daily event, seasonal cycle, spatial pattern, long-term trends, and probably scenario • Aerosol-radiation interaction could be (is already ?) taken into account when dealing with solar plant planning or solar energy operational management • New Mediterranean aerosol climatology is available • Modelling aerosol-radiation requires full coupling interactive scheme: RegCM (ICTP) and ALADIN (CNRM) have this modelling capacity • Quasi-operational weather forecast model including interactive dust scheme has been set-up • Any products from this work ? • What about interactive aerosols in seasonal forecast ? • Work on aerosol representation in RCMs ... towards Med-CORDEX-2 ? Conclusion and future plans

  11. Aerosols : effect of dust emission parameterization • Effect of changing the dust emission scheme in RegCM: • case study: 31/10 to 02/11/2008 Nabat et al. 2012, ACP

More Related