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High Frequency Boundary Layer Profiling with Reusable Radiosondes : Volume 6, Issue 2 (09/04/2013)

By Legain, D.

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Book Id: WPLBN0003993157
Format Type: PDF Article :
File Size: Pages 27
Reproduction Date: 2015

Title: High Frequency Boundary Layer Profiling with Reusable Radiosondes : Volume 6, Issue 2 (09/04/2013)  
Author: Legain, D.
Volume: Vol. 6, Issue 2
Language: English
Subject: Science, Atmospheric, Measurement
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2013
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

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Moulin, E., Renard, J., Legain, D., Tzanos, D., Barrie, J., Douffet, T., & Bousquet, O. (2013). High Frequency Boundary Layer Profiling with Reusable Radiosondes : Volume 6, Issue 2 (09/04/2013). Retrieved from http://www.ebooklibrary.org/


Description
Description: CNRM-GAME, UMR3589, Météo-France and CNRS, Toulouse, France. A new system for high frequency boundary layer profiling based upon radiosondes and free balloons was tested during the field phases of the Boundary Layer Late Afternoon and Sunset Turbulence (BLLAST 2011, Lannemezan, France) and of the Hydrological cycle in the Mediterranean Experiment (HyMeX, 2012). The system consists of a conventional Vaisala receiver and a GPS radiosonde (pressure, wind, humidity and temperature) that is tied to a couple of inflated balloons. The principle of the sounding system is to permit the first balloon to detach from the rawinsonde at a predetermined altitude, allowing the rawinsonde to slowly descend with the second balloon to perform a second, new sounding. The instrumentation is then eventually recovered. The expecting landing area is anticipated before the flight by estimating the trajectory of the probe from a forecasted wind profile and by specifying both the balloon release altitude and the mean ascent and descent rates of the system. The real landing point is determined by the last transmission of the radiosonde GPS and the visual landmark provided by the second balloon. About 70 soundings were performed with a recovery rate of more than 80%. Recovered radiosondes were generally reused several times, often immediately after recovery, which definitely demonstrates the high potential of this system.

Summary
High frequency boundary layer profiling with reusable radiosondes

Excerpt
Bousquet, O. and Tabary, P.: Development of a nationwide, real-time, 3-D wind and reflectivity radar composite in France, Q. J. Roy. Meteor. Soc., in press, 2013.; Douglas, M. W.: Progress towards development of the glidersonde: a recoverable radiosonde system, Technical Conference on Meteorological and Environmental Instruments and Methods of Observation, St. Petersburg, Russian Federation, 27–29 November, P1.6, 2008.; Ducrocq, V., Braud, I., Davolio, S., et al.: HyMeX-SOP1, the field campaign dedicated to heavy precipitation and flash-flooding in Northwestern Mediterranean, B. Am. Meteorol. Soc., submitted, 2013.; LeRoy Meisinger, C.: Recovery of sounding balloons at sea, Mon. Weather Rev., 49, p. 158, 1921.; Lothon, M., Lohou, F., Durand, P., et al.: The Boundary-Layer Late Afternoon and Sunset Turbulence field experiment, in: Proceedings of 20th Symposium on Boundary-Layers and Turbulence, Boston, USA, 9–13 July, 14 B1, 2012.; Mastenbrook, H. J.: A control system for ascent descent balloon soundings of the atmosphere,  J. Appl. Meteorol., 5, 737–740, 1966.; Seity, Y., Brousseau, P., Malardel, S., Hello, G., Bénard, P., Bouttier, F., Lac, C., and Masson, V.: The AROME-France convective-scale operational model, Mon. Weather Rev., 139, 976–991, 2011.; Tennermann, J., Helenelund, C., and Quire, C.: Measuring CO2 concentration from ground level to 2.5 km with temporarily placed equipment, AGU Fall Meeting, San Francisco, USA, 13–17 December, B43C-03, 2004.

 

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