scholarly journals Raman lidar measurements of the aerosol extinction-to-backscatter ratio over the Southern Great Plains

2001 ◽  
Vol 106 (D17) ◽  
pp. 20333-20347 ◽  
Author(s):  
Richard A. Ferrare ◽  
David D. Turner ◽  
Lorraine Heilman Brasseur ◽  
Wayne F. Feltz ◽  
Oleg Dubovik ◽  
...  
Keyword(s):  
Great Plains ◽  
Aerosol Extinction ◽  
Raman Lidar ◽  
Southern Great Plains ◽  
Lidar Measurements

Airborne DIAL and ground-based Raman lidar measurements of water vapor over the Southern Great Plains

2003 ◽  
Author(s):  
Richard A. Ferrare ◽  
Edward V. Browell ◽  
Syed Ismail ◽  
Susan Kooi ◽  
Vince G. Brackett ◽  
...  
Keyword(s):  
Water Vapor ◽  
Great Plains ◽  
Raman Lidar ◽  
Southern Great Plains ◽  
Lidar Measurements

scholarly journals Aircraft Evaluation of Ground-Based Raman Lidar Water Vapor Turbulence Profiles in Convective Mixed Layers

2014 ◽  
Vol 31 (5) ◽  
pp. 1078-1088 ◽  
Author(s):  
D. D. Turner ◽  
R. A. Ferrare ◽  
V. Wulfmeyer ◽  
A. J. Scarino
Keyword(s):  
Water Vapor ◽  
Great Plains ◽  
Mixing Ratio ◽  
Raman Lidar ◽  
Southern Great Plains ◽  
Lidar Measurements ◽  
Atmospheric Radiation Measurement ◽  
Convective Mixed Layer ◽  
Water Vapor Mixing Ratio ◽  
Mixed Layers

AbstractHigh temporal and vertical resolution water vapor measurements by Raman and differential absorption lidar systems have been used to characterize the turbulent fluctuations in the water vapor mixing ratio field in convective mixed layers. Since daytime Raman lidar measurements are inherently noisy (due to solar background and weak signal strengths), the analysis approach needs to quantify and remove the contribution of the instrument noise in order to derive the desired atmospheric water vapor mixing ratio variance and skewness profiles. This is done using the approach outlined by Lenschow et al.; however, an intercomparison with in situ observations was not performed.Water vapor measurements were made by a diode laser hygrometer flown on a Twin Otter aircraft during the Routine Atmospheric Radiation Measurement (ARM) Program Aerial Facility Clouds with Low Optical Water Depths Optical Radiative Observations (RACORO) field campaign over the ARM Southern Great Plains (SGP) site in 2009. Two days with Twin Otter flights were identified where the convective mixed layer was quasi stationary, and hence the 10-s, 75-m data from the SGP Raman lidar could be analyzed to provide profiles of water vapor mixing ratio variance and skewness. Airborne water vapor observations measured during level flight legs were compared to the Raman lidar data, demonstrating good agreement in both variance and skewness. The results also illustrate the challenges of comparing a point sensor making measurements over time to a moving platform making similar measurements horizontally.

Raman lidar measurements of aerosol extinction and backscattering: 1. Methods and comparisons

1998 ◽  
Vol 103 (D16) ◽  
pp. 19663-19672 ◽  
Author(s):  
R. A. Ferrare ◽  
S. H. Melfi ◽  
D. N. Whiteman ◽  
K. D. Evans ◽  
R. Leifer
Keyword(s):  
Aerosol Extinction ◽  
Raman Lidar ◽  
Lidar Measurements

scholarly journals Average aerosol extinction and water vapor profiles over the Southern Great Plains

2001 ◽  
Vol 28 (23) ◽  
pp. 4441-4444 ◽  
Author(s):  
D. D. Turner ◽  
R. A. Ferrare ◽  
L. A. Brasseur
Keyword(s):  
Water Vapor ◽  
Great Plains ◽  
Aerosol Extinction ◽  
Southern Great Plains

Imaginary refractive-index effects on desert-aerosol extinction versus backscatter relationships at 351 nm: numerical computations and comparison with Raman lidar measurements

2004 ◽  
Vol 43 (29) ◽  
pp. 5531 ◽  
Author(s):  
Maria Rita Perrone ◽  
Francesca Barnaba ◽  
Ferdinando De Tomasi ◽  
Gian Paolo Gobbi ◽  
Anna Maria Tafuro
Keyword(s):  
Refractive Index ◽  
Aerosol Extinction ◽  
Raman Lidar ◽  
Numerical Computations ◽  
Lidar Measurements

Convection initiation and bore formation following the collision of mesoscale boundaries over a developing stable boundary layer: a case study from PECAN

2021 ◽  
Author(s):  
Guo Lin ◽  
Coltin Grasmick ◽  
Bart Geerts ◽  
Zhien Wang ◽  
Min Deng
Keyword(s):  
Great Plains ◽  
Deep Convection ◽  
Density Currents ◽  
Raman Lidar ◽  
Frontal Surface ◽  
Thermodynamic Structure ◽  
Lidar Measurements ◽  
Outflow Boundary ◽  
Convection Initiation

AbstractThis observational study documents the consequences of a collision between two converging shallow atmospheric boundaries over the central Great Plains on the evening of 7 June 2015. This study uses data from a profiling airborne Raman lidar (the Compact Raman Lidar, or CRL) and other airborne and ground-based data collected during the Plains Elevated Convection At Night (PECAN) field campaign to investigate the collision between a weak cold front and the outflow from a MCS. The collision between these boundaries led to the lofting of high-CAPE, low-CIN air, resulting in deep convection, as well as an undular bore. Both boundaries behaved as density currents prior to collision. Because the MCS outflow boundary was denser and less deep than the cold-frontal airmass, the bore propagated over the latter. This bore was tracked by the CRL for about three hours as it traveled north over the shallow cold-frontal surface and evolved into a soliton. This case study is unique by using the high temporal and spatial resolution of airborne Raman lidar measurements to describe the thermodynamic structure of interacting boundaries and a resulting bore.

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