Oral Programme ASI6
Atmospheric measurements from local to regional scale: The role of field experimentsConvener: F. Beyrich
Co-Conveners: F. C. Bosveld
| Session Details | Poster Programme |
| Public Information: | The symposium was co-organised by F. Beyrich (DWD Lindenberg), F.C. Bosveld (KNMI De Bilt), and H.A.R. de Bruin (Bilthoven). It was intended to give a forum to discuss recent developments and achievements in local to regional-scale measurement concepts and technology (scales of the order of 1 to 10 km) over land. Inspired by the link between the 11th EMS Annual Meeting with the 10th ECAM, special emphasis was set this time on field experiments which are performed to improve our understanding of complex atmospheric processes, to collect comprehensive data sets including the data from advanced measurement systems not (yet) suited for operational use and to characterize the performance of new measurement techniques. The call for abstracts had found a broad resonance, with 36 submissions (3 of which were withdrawn before the conference) the symposium became one of the th larger sessions of the 11 EMS Annual Meeting. 21 papers (out of 22 planned) were presented during three oral sessions. Another 9 presentations (out of 11 planned) were shown as posters. The oral program was subdivided into three sessions under the headlines (I) major field experiments, (II) field experiments for process studies, and (III) field experiments for sensor tests and characterisation. The sessions took place on Monday afternoon and Tuesday morning. The symposium started with a keynote presentation by T. Foken (University of Bayreuth) who gave an overview on the history and recent achievements of field experiments in boundary-layer meteorology. The presentation nicely illustrated the huge progress in the design, equipment and scientific content of boundary-layer field studies from local- scale field campaigns with just an instrumented tower and some balloon ascents towards complex mesoscale field experiments employing ground-based in-situ and remote sensing technology, airborne measurements and regional-scale sensor networks. The author critically noticed a number of weaknesses often associated with field experiments today. These concern, e.g., the missing link between near-surface micrometeorology and boundary-layer process studies in many experiments (particularly in the ecology community), the missing of important experimental components in field experiments due to budget constraints and the partially non-mature, test status of equipment employed. A second keynote presentation in sub-session III was given by B. Calpini (MeteoSwiss Payerne) who reported about recent field experiments organised by the World Meteorological Organisation (WMO) to test and characterise new sensor systems for operational use by the National Weather Services. These often extremely carefully designed experiments allow for a comprehensive assessment of the recent status and progress in certain fields of meteorological sensor technology. Examples presented were the intercomparison of rainfall intensity instruments 2007-2008 in Italy, the thermometer screen / humidity sensor intercomparison 2008-2009 in Algeria, and the most resent radiosonde intercomparison performed in China in 2010. Reports on these intercomparison experiments can be found at: http://www.wmo.int/pages/prog/www/IMOP/intercomparisons.html . The contributed papers dealt with a wide range of topics under the general headline. Major field experiments presented were the already well-known AMMA (F. Couvreux, MeteoFrance Toulouse, COPS (N. Filipovic, University of Vienna), and VOCALS (P. Zuidema, University of Miami) experiments, but also the more recent urban FluxSAP-2010 campaign (Y. Brunet, INRA), and the LITFASS-2009 (F. Beyrich, DWD Lindenberg) and BLLAST (M. Lothon, University Toulouse) experiments. The latter one was a very recent field campaign (measurements were performed in June and July 2011 at Lannemezan, France) devoted to study the late afternoon / early evening transition of the atmospheric boundary layer. Concerning meteorological sensor characterisation, several papers demonstrated the capabilities of small-scale unmanned aircraft for measurements of boundary-layer parameters and turbulence (e.g., S. Martin Braunschweig University of Technology, A. v. d. Kroonenberg Tübingen University). S. Griesel (DWD Hamburg) reported on a long-term experiment to characterize state-of-the-art humidity sensors. R. Boers et al. (KNMI De Bilt) presented an interesting paper on sensor synergy for reliable fog detection and characterisation. The gap from research towards operational application was bridged by two talks on a micro-radar network in Northern Italy (S. Turso, Politecnico di Torino) and on the combination of fixed and mobile surface observations into a hybrid system for operational road weather monitoring in Finland (P. Saarikivi, Foreca Ltd. Helsinki). Overall, the symposium covered a broad spectrum of measurement techniques and atmospheric process studies. It has found broad interest among the conference participants well beyond the list of speakers (the number of people in the audience varied between about 30 and 80) and inspired interesting discussions and contacts among the scientists. F. Beyrich, F.C. Bosveld, and H.A.R. de Bruin |
Monday, 12 Sep 2011 Room: Oxford Chairperson: Fred Bosveld | |
| Larger Field Experiments | |
| 14:00–14:30 |
EMS2011-105 | Presentation Experiments in meteorology and further developments (solicited) T. Foken |
| 14:30–14:45 |
EMS2011-743 Observations of Diurnal Cycles in West Africa during the AMMA field campaign A. Gounou, F. Couvreux, F. Guichard, and A. Boone |
| 14:45–15:00 |
EMS2011-525 | Presentation Application of a high resolution network of meteorological stations during COPS N. Filipović, R. Steinacker, M. Dorninger, and L. Tüchler |
| 15:00–15:15 |
EMS2011-114 | Presentation Robust aerosol indirect effects inferred from remotely-sensed marine stratocumulus cloud properties acquired during VOCALS P. Zuidema, D. Leon, and D. Painemal |
| 15:15–15:30 |
EMS2011-718 | Presentation The FluxSAP 2010 hydroclimatological experimental campaign over an heterogeneous urban area P. Mestayer, I. Bagga, I. Calmet, G. Fontanilles, D. Gaudin, J.H. Lee, T. Piquet, J.-M. Rosant, K. Chancibault, L. Lebouc, L. Letellier, M.-L. Mosini, F. Rodriguez, J.-M. Rouaud, M. Sabre, Y. Tétard, A. Brut, J.-L. Selves, P.-A. Solignac, Y. Brunet, S. Dayau, M. Irvine, J.-P. Lagouarde, Z. Kassouk, P. Launeau, O. Connan, P. Defenouillère, M. Goriaux, D. Hébert, B. Letellier, D. Mario, G. Najjar, F. Nerry, C. Quentin, R. Biron, J.-M. Cohard, J. Galvez, and P. Klein |
| 15:30–15:45 |
EMS2011-612 | Presentation The Boundary Layer Late Afternoon and Sunset Turbulence 2011 field experiment M. Lothon, F. Lohou, P. Durand, F. Couvreux, D. Legain, E. Pardyjak, J. Vilà-Guerau de Arellano, J. Reuder, D. Pino, P. Augustin, T. Aschenbrenner, A. van de Boer, J. Cuxart, A. Dabas, L. Fleury, F. Gibert, B. Gioli, O. Hartogensis, A. van den Kroonenberg, Y. Seity and the BLLAST participants Team |
| 15:45–16:00 |
EMS2011-806 Towards a validation of scintillometer measurements: The LITFASS-2009 and LITFASS-2012 experiments F. Beyrich, J. Bange, A. Moene, S. Raasch, M. Braam, D. Gräf, O. Hartogensis, B. van Kesteren, A. van den Kroonenberg, B. Maronga, and S. Martin |
Coffee Break | |
| Chairperson: Frank Beyrich | |
| Process Studies | |
| 16:30–16:45 |
EMS2011-134 The ARPA meteorological stations of Lazio (Italy): preliminary results after one year measurements A. Bolignano, I. Pietroni, M. Spada, C. Sorgentone, I. Petenko, M. Morelli, R. Sozzi, and S. Argentini |
| 16:45–17:00 |
EMS2011-199 Measurement and quality control of atmosphere-forest exchange processes at the new TERENO site Wüstebach C. Drüe, A. Graf, G. Heinemann, and T. Pütz |
| 17:00–17:15 |
EMS2011-477 Measurements of energy and water vapor fluxes over typical surfaces in the Hai River Basin, China (withdrawn) Z.W. Xu, S.M. Liu, Z.L. Zhu, and T.R. Xu |
| 17:15–17:30 |
EMS2011-648 | Presentation Regional Scale Flux Observations at Cabauw. F. C. Bosveld |
| 17:30–17:45 |
EMS2011-664 Short time variability in the structure parameter of temperature M. Braam, F. Beyrich, and A.F. Moene |
| 17:45–18:00 |
EMS2011-222 Influence of changes in surface properties on the atmospheric parameters - measurements by a helicopter borne probe Y. Breitenbach and J. Bange |
| 18:00–18:15 |
EMS2011-476 | Presentation Feasibility study of using an unmanned aerial vehicle to measure entrainment processes S. Martin, J. Bange, and F. Beyrich |
| 18:15–18:30 |
EMS2011-76 Fog Detection at the Cabauw Experimental Site for Atmospheric Research by Means of Sensor Synergy R. Boers, H. Klein Baltink, J. Hemink, F. Bosveld, D. Donovan, and M. Moerman |
Tuesday, 13 Sep 2011 Room: Oxford Chairperson: Henk de Bruin | |
| Sensors and System Characterisation | |
| 08:30–09:00 |
EMS2011-811 The importance of inter-comparison field experiments in WMO CIMO and its implication at the national level (solicited) B. Calpini |
| 09:00–09:15 |
EMS2011-575 Mixing height retrievals from automatic profiling lidars and ceilometers in view of future integrated networks in Europe M. Haeffelin and the EU COST Action 0702 Team |
| 09:15–09:30 |
EMS2011-638 | Presentation Validation of wind profiles retrieved by the new Long-Range Windcube with Wind Profiler Radar and Radiosonde measurements at the Lindenberg GRUAN site B. Stiller, V. Lehmann, R. Leinweber, S. Lolli, L. Sauvage, and L. Wagner |
| 09:30–09:45 |
EMS2011-771 High Resolution Continuous Atmospheric Monitoring using MicroRadarNet: an Application to the Identification and Nowcasting of Local Precipitation Events S. Turso, S. Paolella, M. Gabella, and G. Perona |
| 09:45–10:00 |
EMS2011-842 What is the wind speed accuracy of SODARs? S. Bradley and T. Mikkelsen |
| 10:00–10:15 |
EMS2011-93 In situ measurements of the temperature structure parameter over a heterogeneous land surface A.C. van den Kroonenberg, S. Martin, F. Beyrich, and J. Bange |
| 10:15–10:30 |
EMS2011-16 | Presentation Combining fixed and mobile surface observations into a hybrid system P. Saarikivi |
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