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Your search keyword '"Chouza, Fernando"' showing total 2 results
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2 results on '"Chouza, Fernando"'

1. DUST TRANSPORT ACROSS THE ATLANTIC STUDIED BY AIRBORNE DOPPLER WIND LIDAR DURING THE SALTRACE EXPERIMENT IN 2013.

Author

Chouza, Fernando, Reitebuch, Oliver, Rahm, Stephan, and Weinzierl, Bernadett

Subjects
*DUST, *DOPPLER lidar, *SATELLITE meteorology, *RESEARCH aircraft, *MOUNTAIN wave
Abstract

During the SALTRACE field experiment, conducted during June/July 2013, the Saharan dust transport across the Atlantic was analyzed by a set of ground based, in-situ and airborne instruments, including a 2-μm coherent DWL (Doppler wind lidar) mounted onboard the DLR Falcon 20 research aircraft. An overview of the measurements of aerosol backscatter and extinction, horizontal and vertical winds retrieved from the DWL are presented together with a brief description of the applied methods. The retrieved measurements provide direct observation of Saharan dust transport mechanisms across the Atlantic as well as island induced lee waves in the Barbados region. [ABSTRACT FROM AUTHOR]

Published
2016
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2. Vertical wind retrieved by airborne lidar and analysis of island induced gravity waves in combination with numerical models and in situ particle measurements.

Author

Chouza, Fernando, Reitebuch, Oliver, Jähn, Michael, Rahm, Stephan, and Weinzierl, Bernadett

Subjects
LIDAR, GRAVITY waves, EMERGENT gravity, PARAMETERIZATION
Abstract

This study presents the analysis of island induced gravity waves observed by an airborne Doppler wind lidar (DWL) during SALTRACE. First, the instrumental corrections required for the retrieval of high spatial resolution vertical wind measurements froman airborne DWL are presented and the measurement accuracy estimated by means of two different methods. The estimated systematic error is below --0.05ms-1 for the selected case of study, while the random error lies between 0.1 and 0.16ms-1 depending on the estimation method. Then, the presented method is applied to two measurement flights during which the presence of island induced gravity waves was detected. The first case corresponds to a research flight conducted on 17 June 2013 in the Cabo Verde islands region, while the second case corresponds to a measurement flight on 26 June 2013 in the Barbados region. The presence of trapped lee waves predicted by the calculated Scorer parameter profiles was confirmed by the lidar and in situ observations. The DWL measurements are used in combination with in situ wind and particle number density measurements, large-eddy simulations (LES), and wavelet analysis to determine the main characteristics of the observed island induced trapped waves. [ABSTRACT FROM AUTHOR]

Published
2016
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