Comparison of Convective Boundary Layer Characteristics from Aircraft and Wind Lidar Observations

被引:3
作者
Adler, Bianca [1 ]
Kiseleva, Olga [1 ]
Kalthoff, Norbert [1 ]
Wieser, Andreas [1 ]
机构
[1] Karlsruhe Inst Technol, Karlsruhe, Germany
基金
英国自然环境研究理事会;
关键词
Convection; Turbulence; Wavelets; Boundary layer; Aircraft observations; Lidars; Lidar observations; DOPPLER LIDAR; TURBULENCE MEASUREMENTS; FLUXES; VARIABILITY; STATISTICS; HYPOTHESIS; INITIATION; FIELD;
D O I
10.1175/JTECH-D-18-0118.1
中图分类号
P75 [海洋工程];
学科分类号
0814 ; 081505 ; 0824 ; 082401 ;
摘要
During the Convective Storm Initiation Project experiment, which was conducted in summer 2005 in southern England, vertical velocity in the convective boundary layer (CBL) was measured simultaneously with a research aircraft and a wind lidar. The aircraft performed horizontal flight legs approximately parallel to the prevailing wind direction and centered over the lidar. This measurement setup allows for the comparing of CBL characteristics (CBL depth z(i), integral length scale l(w), spectral peak wavelength lambda(m), and vertical velocity variance sigma w2) from temporal (lidar) and spatial (aircraft) measurements. For this, the lidar time series are transferred into space using the mean wind. While the statistics of the aircraft data are all based on the 34-km flight legs, the averaging interval for the lidar is either 1 h or a longer period that corresponds to the 34-km leg. Although the l(w) and lambda(m) values from aircraft and lidar measurements are in the same range (100-200 and 500-2000 m) and agree well on the average, the correlation for individual legs is very low (R-2 < 0.17). One possible explanation is the large uncertainty that arises from the transfer of the lidar time series to space. For sigma w2, the agreement between aircraft and lidar is better for individual legs (R-2 >= 0.63), but the mean absolute difference in sigma w2 is about 2.5 times as large as the statistical error. We examine the nonstationarity and heterogeneity for the lidar and aircraft samples and can exclude these as the major sources for the large differences between lidar and aircraft data.
引用
收藏
页码:1381 / 1399
页数:19
相关论文
共 70 条
[1]  
[Anonymous], 1994, ATMOSPHERIC BOUNDARY, DOI DOI 10.1093/OSO/9780195062397.001.0001
[2]   Conditionalwavelet technique applied to aircraft data measured in the thermal internal boundary layer during sea-breeze events [J].
Attié, JL ;
Durand, P .
BOUNDARY-LAYER METEOROLOGY, 2003, 106 (03) :359-382
[3]  
BANTA R.M., 2013, MOUNTAIN WEAR RES, P409, DOI DOI 10.1007/978-94-007-4098-3_
[4]   Boundary layer dynamics over London, UK, as observed using Doppler lidar during REPARTEE-II [J].
Barlow, J. F. ;
Dunbar, T. M. ;
Nemitz, E. G. ;
Wood, C. R. ;
Gallagher, M. W. ;
Davies, F. ;
O'Connor, E. ;
Harrison, R. M. .
ATMOSPHERIC CHEMISTRY AND PHYSICS, 2011, 11 (05) :2111-2125
[5]   An operational mixing height data set from routine radiosoundings at Lindenberg: Methodology [J].
Beyrich, Frank ;
Leps, Jens-Peter .
METEOROLOGISCHE ZEITSCHRIFT, 2012, 21 (04) :337-348
[6]   Evaluation of turbulence measurement techniques from a single Doppler lidar [J].
Bonin, Timothy A. ;
Choukulkar, Aditya ;
Brewer, W. Alan ;
Sandberg, Scott P. ;
Weickmann, Ann M. ;
Pichugina, Yelena L. ;
Banta, Robert M. ;
Oncley, Steven P. ;
Wolfe, Daniel E. .
ATMOSPHERIC MEASUREMENT TECHNIQUES, 2017, 10 (08) :3021-3039
[7]   Thermodynamic and Turbulence Characteristics of the Southern Great Plains Nocturnal Boundary Layer Under Differing Turbulent Regimes [J].
Bonin, Timothy A. ;
Blumberg, William G. ;
Klein, Petra M. ;
Chilson, Phillip B. .
BOUNDARY-LAYER METEOROLOGY, 2015, 157 (03) :401-420
[8]   The Convective Storm Initiation Project [J].
Browning, Keith A. ;
Blyth, Alan M. ;
Clark, Peter A. ;
Corsmeier, Ulrich ;
Morcrette, Cyril J. ;
Agnew, Judith L. ;
Ballard, Sue P. ;
Bamber, Dave ;
Barthlott, Christian ;
Bennett, Lindsay J. ;
Beswick, Karl M. ;
Bitter, Mark ;
Bozier, Karen E. ;
Brooks, Barbara J. ;
Collier, Chris G. ;
Davies, Fay ;
Deny, Bernhard ;
Dixon, Mark A. ;
Feuerle, Thomas ;
Forbes, Richard M. ;
Gaffard, Catherine ;
Gray, Malcolm D. ;
Hankers, Rolf ;
Hewison, Tim J. ;
Kalthoff, Norbert ;
Khodayar, Samiro ;
Kohler, Martin ;
Kottmeier, Christoph ;
Kraut, Stephan ;
Kunz, Michael ;
Ladd, Darcy N. ;
Lean, Humphrey W. ;
Lenfant, Juergen ;
Li, Zhihong ;
Marsham, John ;
Mcgregor, James ;
Mobbs, Stephan D. ;
Nicol, John ;
Norton, Emily ;
Parker, Douglas J. ;
Perry, Felicity ;
Ramatschi, Markus ;
Ricketts, Hugo M. A. ;
Roberts, Nigel M. ;
Russell, Andrew ;
Schulz, Helmut ;
Slack, Elizabeth C. ;
Vaughan, Geraint ;
Waight, Joe ;
Wareing, David P. .
BULLETIN OF THE AMERICAN METEOROLOGICAL SOCIETY, 2007, 88 (12) :1939-+
[9]   Evaluation of a Procedure to Correct Spatial Averaging in Turbulence Statistics from a Doppler Lidar by Comparing Time Series with an Ultrasonic Anemometer [J].
Brugger, Peter ;
Traeumner, Katja ;
Jung, Christina .
JOURNAL OF ATMOSPHERIC AND OCEANIC TECHNOLOGY, 2016, 33 (10) :2135-2144
[10]  
CARAMORI P, 1994, J CLIMATE, V7, P627, DOI 10.1175/1520-0442(1994)007<0627:SAOAFE>2.0.CO