The Convective and Orographically-induced Precipitation Study (COPS): the scientific strategy, the field phase, and research highlights

Volker Wulfmeyer 1 Andreas Behrendt 1 Christoph Kottmeier 2 Ulrich Corsmeier 2 Christian Barthlott 2 George C. Craig 3 Martin Hagen 3 Dietrich Althausen 4 Fumiko Aoshima 1 Marco Arpagaus 5 Hans-Stefan Bauer 1 Lindsay Bennett 6 Alan Blyth 6 Christine Brandau 7 Cédric Champollion 8 Susanne Crewell 9 Galina Dick 10 Paolo Di Girolamo 11 Manfred Dorninger 12 Yann Dufournet 7 Rafael Eigenmann 13 Ronny Engelmann 4 Cyrille Flamant 14 Thomas Foken 13 Theresa Gorgas 12 Matthias Grzeschik 1, 15 Jan Handwerker 2 Christian Hauck 16 Hartmut Höller 3 Wolfgang Junkermann 17 Norbert Kalthoff 2 Christoph Kiemle 3 Stefan Klink 18 Marianne König 19 Liane Krauss 2 Charles N. Long 20 Fabio Madonna 21 Stephen Mobbs 6 Bruno Neininger 22 Sandip Pal 1 Gerhard Peters 23 Grégoire Pigeon 24 Evelyne Richard 25 Mathias W. Rotach 5 Herman Russchenberg 7 Thomas Schwitalla 1 Victoria Smith 6 Reinhold Steinacker 12 Jörg Trentmann 18 David D. Turner 1 Joël van Baelen 26 Siegfried Vogt 2 Hans Volkert 3 Tammy Weckwerth 27 Heini Wernli 28 Andreas Wieser 2 Martin Wirth 3
Abstract : Within the framework of the international field campaign COPS (Convective and Orographically induced Precipitation Study), a large suite of state-of-the-art meteorological instrumentation was operated, partially combined for the first time. This includes networks of in situ and remote-sensing systems such as the Global Positioning System as well as a synergy of multi-wavelength passive and active remote-sensing instruments such as advanced radar and lidar systems. The COPS field phase was performed from 01 June to 31 August 2007 in a low-mountain area in southwestern Germany/eastern France covering the Vosges mountains, the Rhine valley and the Black Forest mountains. The collected dataset covers the entire evolution of convective precipitation events in complex terrain from their initiation, to their development and mature phase until their decay. Eighteen Intensive Observations Periods with 37 operation days and eight additional Special Observations Periods were performed, providing a comprehensive dataset covering different forcing conditions. In this article, an overview of the COPS scientific strategy, the field phase, and its first accomplishments is given. Highlights of the campaign are illustrated with several measurement examples. It is demonstrated that COPS research provides new insight into key processes leading to convection initiation and to the modification of precipitation by orography, in the improvement of quantitative precipitation forecasting by the assimilation of new observations, and in the performance of ensembles of convection-permitting models in complex terrain.
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Volker Wulfmeyer, Andreas Behrendt, Christoph Kottmeier, Ulrich Corsmeier, Christian Barthlott, et al.. The Convective and Orographically-induced Precipitation Study (COPS): the scientific strategy, the field phase, and research highlights. Quarterly Journal of the Royal Meteorological Society, Wiley, 2011, 137 (S1), pp.3-30. ⟨10.1002/qj.752⟩. ⟨hal-00565513⟩

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