1 / 10

Plan for PhD thesis by Roberto Kretschmer

Simultaneous use of greenhouse gas concentration measurements and meteorological measurements in a mesoscale model to improve regional scale budget estimates. Plan for PhD thesis by Roberto Kretschmer. optimization of WRF-VPRM runs. ECMWF meteorology. lateral+initial met. boundary conditions.

blake-walls
Download Presentation

Plan for PhD thesis by Roberto Kretschmer

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. Simultaneous use of greenhouse gas concentration measurements and meteorological measurements in a mesoscale model to improve regional scale budget estimates Plan for PhD thesis by Roberto Kretschmer Institute Retreat June 16-19, 2008 – Chorus ATM-Group

  2. optimization of WRF-VPRM runs ECMWF meteorology lateral+initial met. boundary conditions VPRM Fossil fuel Emissions IER 10x10 km2 Vegetation Photosynthesisand Respiration Model 10x10 km2 High resolution Tracers Model Organizing Software System (MOSS) • combine andautomatize all steps Institute Retreat June 16-19, 2008 – Chorus ATM-Group

  3. system access via web interfaces Institute Retreat June 16-19, 2008 – Chorus ATM-Group

  4. improve regional scale budget estimates Plan for PhD thesis… Wallace and Hobbs, 2006, Fig. 9.1 Photo courtesy of Beverly Shannon Institute Retreat June 16-19, 2008 – Chorus ATM-Group

  5. uncertain transport means uncertain mixing ratios ~3.5 ppmerror in PBL CO2 mixing ratio estimates from ECMWF driven transport model in summertime (Gerbig et al., 2008) Institute Retreat June 16-19, 2008 – Chorus ATM-Group

  6. 20 June 18 June improve estimates by using additional meteorological information • exploit ceilometer network of DeutscherWetterdienst maintaining about 100 stations • but: ceilometer PBL sight might be insufficient CERES Experiment, provided by Pierre Durand, Lab. d’Aérologie Institute Retreat June 16-19, 2008 – Chorus ATM-Group

  7. relevant data sources • radio soundings • tall towermeasurements • satellite observations CALIPSO (Liu et al., 2008) Meteosat ICESAT (icesat.gsfc.nasa.gov) • retrieval of remote sensing data: advertisement for PhD student within Dietrich Feist’sgroup Institute Retreat June 16-19, 2008 – Chorus ATM-Group

  8. approach • forward modelling using WRF-VPRM for CO2 and CH4 • validation of WRF mixing heights against observations • reshuffling of tracers between PBL and FT to match observed mixing heights • Hypothesis: this leads to better agreement between simulated and measured tracers Institute Retreat June 16-19, 2008 – Chorus ATM-Group

  9. integrate STILT into MOSS STILT Institute Retreat June 16-19, 2008 – Chorus ATM-Group

  10. approach • forward modelling using WRF-VPRM for CO2 and CH4 • validation of WRF mixing heights against observations • reshuffling of tracers between PBL and FT to match observed mixing heights • Hypothesis: this leads to better agreement between simulated and measured tracers • nudging of variables in WRF to match observed mixing heights • inverse modelling with STILT to derive improved estimates of regional scale CO2 and CH4 fluxes and their uncertainties • comparison with independent flux estimates Institute Retreat June 16-19, 2008 – Chorus ATM-Group

More Related