TROPIC Workshop at DLR Oberpfaffenhofen

Venue: Pfarrstadel, Weßling

Program as of 12 May 2003

Wednesday, 14 May 2003

08:00 Registration and Poster setup

 

09:00 Opening: (U. Schumann and G. Amanatidis)

09:10 Overview on the TROCCINOX and HIBISCUS projects (U. Schumann and J.-P. Pommereau)

10:00 Introduction to tropical meteorology and deep convection (R. Smith)

10:45 Discussion

11:00 Presentation of Posters, Part I (N. Dotzek)

11:15 Coffee Break, Poster Session

  1. Upper tropospheric flow patterns during summer season over South America (C. Gatzen, A. M. Gomes)
  2. Statistics of VIL densities and local synoptic situations (A. M. Gomes, G. Held, J. C. Figueiredo)
  3. Severe convection in Brazil (N. Dotzek, H. Höller, G. Held, A. M. Gomes)
  4. Lightning detection and statistics in Brazil (T. Fehr, O. Pinto)
  5. Upper tropospheric flow impact on NOx transport (C. Gatzen)
  6. Export of pollutants from southern Asia and their large-scale effects (M. Lawrence)
  7. Capabilities for cloud measurements by compact lidars onboard Geophysica aircraft (R. Matthey)
  8. Temperature trends in tropical convection zones (B. Knudsen, T. Christensen)
  9. Optical properties of high tropospheric clouds from previous measurements in the tropics (F. Cairo, G. di Donfrancesco, C. Buontempo)
  10. Variability of cirrus clouds: Natural perturbations and possible signal of cirrus contrails in the tropics (C. Zerefos et al.)
  11. Cause of high number densities of ice crystals in cirrus clouds (B. Luo, C. Hoyle, T. Peter)
  12. Aerosol and gas transport to the upper troposphere in deep convection (K. Carslaw, Y. Yin)
  13. Ozone as an index to map tropical circulation (H. Smit)
  14. Observation program in Paramaribo (H. Kelder, G. Verver)
  15. The new DOAS multi-axis instrument for the observation of atmospheric trace gases at Paramaribo (Suriname): First results (U. Friess)
  16. Diagnostics and modeling of the spatial rainfall variability on interseasonal to decadal time scales in southern west Africa (P. Speth, A. Fink)
  17. Precipitation of volatile metals in the tropics (K. Patel)
  18. Observed and modeled O3 and NO2 variability in the tropical UT/LS – Contributions of transport, chemistry, and measurement error (F. Borchi et al.)
  19. The EMERALD 2 campaign: Airborne measurements in the outflow from tropical convection (J. Whiteway)
  20. Observations of tropical thunderstorms during EMERALD 2 (H. Höller, R. Busen)
  21. Preliminary results of an FTIR observation campaign at Ile de la Réunion on October 2002 (M. de Mazière)

12:00 Lunch

13:00 Vertical transport in the tropical tropopause layer (TTL), the Brewer-Dobson circulation, and the tropical barrier (G. Craig)

13:45 Discussion

14:00 Coffee Break

Short Presentations (5 min each, Session chair: U. Schumann)

14:15 What TROCCINOX can expect during February 2004: Statistics of VIL densities and local synoptic situations (A. M. Gomes, G. Held, J. C. Figueiredo)

14:25 Optical measurements of thin tropical cirrus: State of the art and possible prospectives (F. Cairo, G. di Donfrancesco, C. Buontempo)

14:35 Modification of homogeneous ice formation in ubiquitous gravity waves (B. Luo)

14:45 The parameterization of convection in regional and global models (C. Mari)

14:55 The importance of tropical convection in regional and global models (M. Lawrence)

15:05 The new DOAS multi-axis instrument for the observation of atmospheric gases at Paramaribo (Suriname): First results (U. Friess)

15:15 Convection and rainfall variability in southern west Africa (P. Speth, A. Fink)

15:25 Inertial instabilities in tropical dynamics (H. Kelder, G. Verver)

15:35 Airborne measurements in the outflow from tropical convection (J. Whiteway)

15:45 Coffee Break

Short Presentations (5 min each, Session chair: J.-P. Pommereau)

16:00 The role of lightning for air chemistry in the tropics and effects on mid-latitudes (V. Grewe)

16:10 Lead distribution and precipitation in the tropics (K. Patel)

16:20 Temperature trends in the convective zones in the tropics using reanalyzed ECMWF data (T. Christensen)

16:30 Review of homogeneous aerosol nucleation in the tropical upper troposphere (J. Curtius)

16:40 Aerosol and gas transport to the upper troposphere in deep convection (K. Carslaw, Y. Yin)

16:50 Role of waves at various scales in air dehydration in the tropical upper troposphere (A. Hertzog, F. Vial)

17:00 Discussion and Conclusions for Day 1

18:00 End of Program

 

Thursday, 15 May 2003

09:00 Cirrus, sub-visible cirrus, aerosols and water vapor transport in the tropical upper troposphere and lower stratosphere, incl. dehydration by sedimenting ice particles (T. Peter)

09:45 Discussion

10:00 Air chemistry in the tropical troposphere and stratosphere (J. Pyle)

10:45 Discussion

11:00 Presentation of Posters, Part II (N. Dotzek)

11:15 Coffee Break, Poster Session

  1. Dehydration of the tropical tropopause over the Indian Ocean (C. Schiller, S. Rohs)
  2. Aircraft Condensational Hygrometer (ACH) onboard M-55: Results and prospects (M. Mezrin, E. Starokoltsev)
  3. The chemical component of the AMMA campaign, summer 2006 (C. Mari)
  4. Production of nitrogen oxides by lightning: Airborne measurements in European thunderstorms (H. Huntrieser)
  5. Cirrus from above: Observations of high altitude clouds by a balloonborne lidar (G. Di Donfrancesco, F. Cairo, C. Buontempo, J. P. Pommereau, A. Garnier)
  6. Chemistry, particles, and dehydration in the tropical upper troposphere and stratosphere: The potential contribution by large balloons (H. Oelhaf)
  7. The NILU-CUBE, a multichannel moderate bandwidth filter instrument (A. Kylling)
  8. Review of homogeneous aerosol nucleation in the tropical upper troposphere (J. Curtius)
  9. Mixing layer in the lowermost stratosphere as seen by MOZAIC in situ aircraft measurements (J.-P. Cammas et al.)
  10. What is the potential role of halogen oxides in the tropical UT/LS photochemistry? (K. Pfeilsticker)
  11. Aircraft observations of aerosol and trace gas concentrations in the tropical troposphere up to 12 km during INCA(A. Minikin, J. Baehr et al.)
  12. Latitudinal variations of trace gases in the free troposphere; Enhanced tropical upper tropospheric carbonylsulfide and its impact on the stratospheric aerosol layer (J. Notholt)
  13. Microphysical modeling of ultrathin tropical tropopause clouds (J. Nielsen, N. Larsen)
  14. Modeling cirrus clouds and Lagrangian studies of dehydration in the tropical tropopause layer (C. Ren, A. R. MacKenzie)
  15. Lightning tracer transport with the GCM ECHAM5/Nudge (C. Kurz)
  16. Estimates of Lagrangian temperature fluctuations encountered by air parcels at the tropical tropopause (A. Hertzog, F. Vial)
  17. Ascent and entrainment rates in the tropical stratosphere from balloon-borne in situ observations (C. Volk, A. Kuhn)
  18. Tracer transport model forecasts and analyses for aircraft measurement campaigns (C. Forster)
  19. 3D mesoscale modeling of a case of deep convection: Transport and chemistry (E. Riviere, V. Marecal)
  20. Lagrangian modeling of the chemistry of the lower stratosphere: Comparison with SAOZ-MIR chemical species measurements in February 2001 (M. Pirre)
  21. Preliminary modeling over Brazil and south Atlantic with Meso-NH (J.-P. Chaboureau, P. Mascart)

12:00 Lunch

13:00 Lightning and NOx (H. Höller)

13:45 Discussion

14:00 Coffee Break

Short Presentations (5 min each, Session chair: tdb)

14:15 The potential role of halogen oxides (BrO, IO, OIO, OClO ?) in the tropical UT/LS photochemistry (K. Pfeilsticker)

14:25 Some results of using Aircraft Condensational Hygrometer (ACH) onboard the M-55 during APE-THESEO campaign (M. Mezrin, E. Starokoltsev)

14:35 The chemical component of the AMMA campaign, summer 2005 (C. Mari)

14:45 Scientific objectives of SCOUT tropical campaign (C. Schiller)

14:55 Modeling aerosol/cloud processes for TROCCINOX and SCOUT mesoscale tropical campaigns (B. Kärcher)

15:05 The biochemistry department’s contribution to the "Large Scale Biosphere Atmosphere Experiment in Amazonia (LBA)" (F. Meixner, A. Thielmann)

15:15 Lidar measurements of tropical subvisual cirrus above the central Atlantic Ocean (F. Immler, O. Schrems)

15:25 Influence of deep convection on UTH in the tropics (H. Smit)

15:35 ()

15:45 Coffee Break

Short Presentations (5 min each, Session chair: tbd)

16:00 Improving the representation of convection in a Lagrangian tracer transport model by using satellite data (C. Forster)

16:10 Presentation of the libRadtran/uvspec tool for radiative transfer modeling and ist applicability in the tropics (A. Kylling)

16:20 Microphysical modeling of ultrathin tropical tropopause clouds (J. Nielsen, N. Larsen)

16:30 Enhanced upper tropospheric carbonylsulfide (COS): Impact on the stratospheric aerosol layer (J. Notholt)

16:40 The chemical transport model CLaMS and ist potential for tropical applications (R. Müller)

16:50 Transport in the TTL from in situ measurements on board the M55 Geophysica (M. Volk)

17:00 Discussion and Conclusions for Day 2

18:00 End of Program

18:30 Guided tour of the old church "Mariä Himmelfahrt" next to Pfarrstadel

19:00 Workshop Dinner

 

Friday, 16 May 2003

09:00 Experience from the LBA and other previous and ongoing projects (F. Meixner)

09:45 Discussion

10:00 Coffee Break

Short Presentations (5 min each, Session chair: tbd)

10:10 Merida, a new high altitude atmospheric research station in the tropics (O. Schrems, J. Stock, P. Hoffmann)

10:20 Mesoscale modeling of tropical cyclones: A case study on the cyclone Davina (C. Buontempo, R. Ferretti)

10:30 Tropical tropospheric ozone based on GOME measurements (H. Kelder)

10:40 Chemistry, particles, and dehydration in the tropical upper troposphere and stratosphere: The potential contribution by large balloons (H. Oelhaf)

10:50 ()

11:00 Final Discussion: Insights, open questions, and possible means to address these within the forthcoming projects (chaired by J.-P. Pommereau and U. Schumann)

11:50 Final remarks (G. Amanatidis)

12:00 Closing of the TROPIC Workshop