Abstract
Two important measurement campaigns took place in Europe in the last years, the Convective Storm Initiation Project (CSIP) and the Convective and Orographically-induced Precipitation Study (COPS) to gain a better understanding of why deep convection develops. In both campaigns, a dense network of instruments was deployed for detailed observation of the boundary layer characteristics. This paper investigates the usefulness of the combination of high-resolution surface, GPS, and radiosonde measurements to ascertain the likelihood of deep convection in particular for the complex terrain of the COPS domain. Two convection episodes were analysed for this purpose, one from the CSIP campaign and one from the COPS experiment. This study shows that despite the high spatial resolution of the radiosonde network in comparison to current observations, it was necessary to ascertain higher-resolution data sets illustrating the spatial variability of humidity, atmospheric stability, and convective inhibition. GPS and radiosonde data were used to determine high-resolution humidity fields, yielding high-resolution convection-related parameters’ fields representing atmospheric instability and inhibition in the area. The surface data provided a high-resolution representation of the near-surface convergence zones, which acted as triggering mechanism. The use of GPS measurements and surface stations, in addition to radiosonde measurements, turned out to be especially helpful to determine the regions of increased likelihood of deep convection.
References
Ahrens CD, Samson P (2009) Extreme weather and climate. Cengage Learning, Belmont, p 511
Aoshima F, Behrendt A, Bauer HS, Wulfmeyer V (2008) Statistics of convection initiation by use of Meteosat rapid scanning data during the Convective and Orographically Induced Precipitation Study (COPS). Meteorol Z 17:921–930
Bennett LJ, Browning KA, Blyth AM, Parker DJ, Clark PA (2006) A review of the initiation of precipitating convection in the United Kingdom. Q J Royal Meteorol Soc 132:1001–1020
Bennett LJ, Blyth AM, Browning KA, Norton EG (2008) Observations of the development of convection through a series of stable layers during the Convective Storm Initiation Project. Q J Royal Meteorol Soc 134:2079–2091
Bevis M, Businger S, Herring T, Rocke C, Anthes RA, Ware RH (1992) GPS meteorology: remote sensing of the atmospheric water vapor using the global positioning system. J Geophys Res 97:15787–15801
Browning K, Blyth A, Clark P, Corsmeier U, Morcrette C, Agner J, Bamber D, Barthlott C, Bennett L, Beswick K, Bitter M, Bozier K, Brooks B, Collier C, Cook C, Davies F, Deny B, Engelhardt M, Feuerle T, Forbes R, Gaffard C, Gray M, Hanken R, Hewison T, Huckle R, Kalthoff N, Khodayar S, Kholer M, Kraut S, Kunz M, Ladd D, Lenfant J, Marsham J, McGregor J, Nicol J, Norton E, Parker D, Perry D, Ramatschi M, Roberts H, Russel A, Schulz H, Slack E, Vauhan G, Waight J, Watson R, Webb A, Wieser A, Zinz K (2007) The Convective Storm Initiation Project. Bull Am Meteorol Soc 88:1939–1955
Carlson TN, Ludlam FH (1968) Conditions for the occurrence of severe local storms. Tellus 20:203–226
Carlson TN, Anthes RA, Schwartz M, Benjamin SG, Baldwin DG (1980) Analysis and prediction of severe storms environments. Bull Am Meteorol Soc 61:1018–1032
Colby FP Jr (1984) Convective inhibition as a predictor of convection during AVE-SESAME II. Mon Weather Rev 112:2239–2252
Craven JP, Jewell RE, Brooks HE (2002) Comparison between observed convective cloud-base heights and lifting condensation level for two different lifted parcels. Weather Forecast 17:885–890
Doswell CA III, Rasmussen EN (1994) The effect of neglecting the virtual temperature correction on CAPE calculations. Weather Forecast(Notes and Correspondence) 9:625–629
Gendt G, Dick G, Reigber C, Tomassini M, Liu Y, Ramatschi M (2004) Near real time GPS water vapour monitoring for numerical weather prediction in Germany. J Meteorol Soc Jpn 82(1b):361–370
Kalthoff N, Adler B, Barthlott C, Corsmeier U, Mobbs SD, Crewell S, Träumner K, Kottmeier C, Wieser A, Smith V, Di Girolamo P (2009) The impact of convergence zones on the initiation of deep convection: a case study from COPS. Atmos Res 93:680–694
Khodayar S (2009) High-resolution analysis of the initiation of deep convection forced by boundary layer processes. PhD thesis, University of Karlsruhe
Khodayar S, Kalthoff N, Wickert J, Corsmeier U, Morcrette CJ, Kottmeier C (2010) The increase of spatial data resolution for the detection of the initiation of convection. A case study from CSIP. Meteorol Z 19:179–198
Kohler M, Kalthoff N (2011) cops_rsdu_imkfixrs: meteorological profile data from fixed radiosounding stations run by FZK/IMK-TRO during COPS 2007. World Data Center for Climate. doi:10.1594/WDCC/cops_rsdu_imkfixrs
Kottmeier C, Kalthoff N, Barthlott C, Corsmeier U, Van Baelen J, Behrendt A, Behrendt R, Blyth A, Crewell S, Di Girolamo P, Dorninger M, Flamant C, Foken T, Hagen M, Hauck C, Hoeller H, Konow H, Kunz M, Mahlke H, Mobbs S, Richard E, Steineker R, Weckwerth T, Wieser A, Wulfmeyer V (2008) Mechanisms initiating deep convection over complex terrain during COPS. Meteorol Z 17:931–948
Moncrieff MW, Miller MJ (1976) The dynamics and simulation of tropical cumulonimbus and squall lines. Q J Royal Meteorol Soc 102:373–394
Shepard, D, (1968) A two-dimensional interpolation function for irregularly spaced data. In: Proceedings of 23rd ACM National Conference. Brandon/Systems Press, Princeton, pp 517–524
Steinacker R, Ratheiser M, Bica B, Chimani B, Dorninger M, Gepp W, Lotteraner C, Schneider S, Tschannett S (2006) A mesoscale data analysis and downscaling method over complex terrain. Mon Weather Rev 134:2758–2771
Weckwerth TM (2000) The effect of small-scale moisture variability on thunderstorm initiation. Mon Weather Rev 128:4017–4030
Weckwerth TM, Parsons DB (2006) A review of convection initiation and motivation for IHOP 2002. Mon Weather Rev 134:5–21
Weckwerth TM, Parsons DB, Koch SE, Moore JA, LeMone MA, Demoz B, Flamant C, Geerts B, Wang J, Feltz WF (2004) An overview of the international H2O project (IHOP 2002) and some preliminary highlights. Bull Am Meteor Soc 85:253–277
Wickert J, Gendt G (2006) GPS based remote sensing of the Earth’s atmosphere. Promet 32:176–184
Wulfmeyer V, Behrendt A, Bauer H-S, Kottmeier C, Corsmeier U, Blyth A, Craig G, Schumann U, Hagen M, Crewell S, Di Girolamo P, Flamant C, Miller M, Montani A, Mobbs SD, Richard E, Rotach MW, Arpagaus M, Russchenberg H, Schluessel P, Koenig M, Gaertner V, Steinacker R, Dorninger M, Turner DD, Weckwerth TM, Hense A, Simmer C (2008) The Convective and Orographically-induced Precipitation Study: a research and development project of the World Weather Research Program for improving quantitative precipitation forecasting in low-mountain regions. Bull Am Meteor Soc 89:1477–1486
Acknowledgments
The Karlsruhe Institute of Technology (KIT) supported the participation of IMK in the CSIP campaign. We would like to thank EUMETSAT for the Meteosat images and the Met Office for the radar network rain rates. The authors wish to thank the Deutsche Forschungsgemeinschaft (DFG) for funding the Priority Programme SPP 1167 in which the field campaign COPS was embedded. We would like also to thank Holger Mahlke and Rainer Behrendt for providing the GFS plots. The first author was funded by the DFG-graduate school programme “Natural disasters” at Karlsruhe University.
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Khodayar, S., Kalthoff, N., Wickert, J. et al. High-resolution representation of the mechanisms responsible for the initiation of isolated thunderstorms over flat and complex terrains: analysis of CSIP and COPS cases. Meteorol Atmos Phys 119, 109–124 (2013). https://doi.org/10.1007/s00703-012-0232-6
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DOI: https://doi.org/10.1007/s00703-012-0232-6