Spaceborne profiling of atmospheric temperature and particle extinction with pure rotational Raman lidar and of relative humidity in combination with differential absorption lidar: performance simulations--erratum

2006 ◽  
Vol 45 (20) ◽  
pp. 4909
Author(s):  
Paolo Di Girolamo ◽  
Andreas Behrendt ◽  
Volker Wulfmeyer
Keyword(s):  
Relative Humidity ◽  
Atmospheric Temperature ◽  
Raman Lidar ◽  
Differential Absorption ◽  
Differential Absorption Lidar

scholarly journals Multiparameter Raman Lidar Measurements for the Characterization of a Dry Stratospheric Intrusion Event

2009 ◽  
Vol 26 (9) ◽  
pp. 1742-1762 ◽  
Author(s):  
Paolo Di Girolamo ◽  
Donato Summa ◽  
Rossella Ferretti
Keyword(s):  
Water Vapor ◽  
High Resolution ◽  
Relative Humidity ◽  
Potential Temperature ◽  
Atmospheric Temperature ◽  
Deep Penetration ◽  
Raman Lidar ◽  
Dry Air ◽  
Stratospheric Intrusion ◽  
Lidar Measurements

Abstract The University of Basilicata Raman lidar system (BASIL) is operational in Potenza, Italy, and it is capable of performing high-resolution and accurate measurements of atmospheric temperature and water vapor based on the application of the rotational and vibrational Raman lidar techniques in the ultraviolet region. BASIL was recently involved in the 2005 International Lindenberg campaign for Assessment of Humidity and Cloud Profiling Systems and Its Impact on High-Resolution Modeling (LAUNCH 2005) experiment held from 12 September to 31 October 2005. A thorough description of the technical characteristics, measurement capabilities, and performances of BASIL is given in this paper. Measurements were continuously run between 1 and 3 October 2005, covering a dry stratospheric intrusion episode associated with a tropopause folding event. The measurements in this paper represent the first simultaneous Raman lidar measurements of atmospheric temperature, water vapor mixing ratio, and thus relative humidity reported for an extensive observation period (32 h). The use of water vapor to trace intruded stratospheric air allows the clear identification of a dry structure (∼1 km thick) originating in the stratosphere and descending in the free troposphere down to ∼3 km. A similar feature is present in the temperature field, with lower temperature values detected within the dry-air tongue. Relative humidity measurements reveal values as small as 0.5%–1% within the intruded air. The stratospheric origin of the observed dry layer has been verified by the application of a Lagrangian trajectory model. The subsidence of the intruding heavy dry air may be responsible for the gravity wave activity observed beneath the dry layer. Lidar measurements have been compared with the output of both the fifth-generation Pennsylvania State University–National Center for Atmospheric Research (PSU–NCAR) Mesoscale Model (MM5) and the European Centre for Medium-Range Weather Forecasts (ECMWF) global model. Comparisons in terms of water vapor reveal the capability of MM5 to reproduce the dynamical structures associated with the stratospheric intrusion episode and to simulate the deep penetration into the troposphere of the dry intruded layer. Moreover, lidar measurements of potential temperature are compared with MM5 output, whereas potential vorticities from both the ECMWF model and MM5 are compared with estimates obtained combining MM5 model vorticity and lidar measurements of potential temperature.

scholarly journals Evaluation of a Compact Broadband Differential Absorption Lidar for Routine Water Vapor Profiling in the Atmospheric Boundary Layer

2020 ◽  
Vol 37 (1) ◽  
pp. 47-65 ◽  
Author(s):  
R. K. Newsom ◽  
D. D. Turner ◽  
R. Lehtinen ◽  
C. Münkel ◽  
J. Kallio ◽  
...  
Keyword(s):  
Water Vapor ◽  
Standard Deviation ◽  
Correlation Coefficient ◽  
Linear Correlation ◽  
Lower Troposphere ◽  
Mean Difference ◽  
Data Availability ◽  
Raman Lidar ◽  
Differential Absorption ◽  
Differential Absorption Lidar

AbstractThe performance of a novel water vapor broadband differential absorption lidar (BB-DIAL) is evaluated. This compact, eye-safe, diode-laser-based prototype was developed by Vaisala. It was designed to operate unattended in all weather conditions and to provide height-resolved measurements of water vapor mixing ratio in the lower troposphere. Evaluation of the Vaisala prototype was carried out at the U.S. Department of Energy’s Atmospheric Radiation Measurement site in north-central Oklahoma (i.e., the Southern Great Plains site) from 15 May to 12 June 2017. BB-DIAL measurements were compared with observations from radiosondes that were launched within 200 m of the BB-DIAL’s location. Radiosonde measurements are also compared with observations from a collocated Raman lidar and an Atmospheric Emitted Radiance Interferometer. During the evaluation period, the BB-DIAL operated continuously and did not experience any failures or malfunctions. The data availability was greater than 90% below 900 m but then decreased rapidly with height above this level to less than 10% above 1500 m AGL. From 106 radiosonde profiles, the overall mean difference (averaged temporally and vertically up to 1500 m) between the BB-DIAL and the radiosonde was −0.01 g kg−1, with a standard deviation of 0.65 g kg−1, and a linear correlation coefficient of 0.98. For comparison, the overall mean difference between the Raman lidar and the radiosonde was 0.07 g kg−1, with a standard deviation of 0.74 g kg−1, and a linear correlation coefficient of 0.97.

scholarly journals Towards Developing a Micropulse Differential Absorption Lidar to Measure Atmospheric Temperature

2020 ◽  
Vol 237 ◽  
pp. 06018
Author(s):  
Robert A. Stillwell ◽  
Scott M. Spuler ◽  
Matthew Hayman ◽  
Catharine E. Bunn ◽  
Kevin S. Repasky
Keyword(s):  
Spectral Resolution ◽  
Atmospheric Temperature ◽  
High Spectral Resolution ◽  
Direct Result ◽  
Oxygen Absorption ◽  
Doppler Broadening ◽  
Differential Absorption ◽  
Differential Absorption Lidar ◽  
Retrieval Method ◽  
Aerosol Parameters

It has generally been assumed that differential absorption lidar (DIAL) systems are incapable of measuring atmospheric temperature with useful accuracy. This assumption is a direct result of errors that arise in standard DIAL retrievals due to differential Rayleigh-Doppler broadening from aerosols and molecules. We present here, a combined high spectral resolution (HSRL) and DIAL system that addresses this identified source of uncertainty by measuring quantitative aerosol parameters as well as oxygen absorption parameters. This system, in combination with a perturbative retrieval method, accounts for the Rayleigh-Doppler broadening effects on the oxygen absorption. We describe this combined DIAL/HSRL system and retrieval to evaluate the first retrieval parameters exploring the likelihood that it is possible to measure atmospheric temperature using a DIAL system.

Synergy of Raman Lidar and Modeled Temperature for Relative Humidity Profiling: Assessment and Uncertainty Analysis

2021 ◽  
pp. 1-12
Author(s):  
Constantino Munoz-Porcar ◽  
Michael Sicard ◽  
Maria Jose Granados-Munoz ◽  
Ruben Barragan ◽  
Adolfo Comeron ◽  
...  
Keyword(s):  
Relative Humidity ◽  
Uncertainty Analysis ◽  
Raman Lidar

A rapidly tunable TEA CO 2 laser for differential absorption lidar

2005 ◽  
Author(s):  
Yanchen Qu ◽  
Deming Ren ◽  
Li-Li Zhang ◽  
Xiaoyong Hu ◽  
Fengmei Liu
Keyword(s):  
Differential Absorption ◽  
Differential Absorption Lidar

scholarly journals Differential absorption lidar for volcanic CO_2 sensing tested in an unstable atmosphere

2015 ◽  
Vol 23 (5) ◽  
pp. 6634 ◽  
Author(s):  
Manuel Queißer ◽  
Mike Burton ◽  
Luca Fiorani
Keyword(s):  
Differential Absorption ◽  
Differential Absorption Lidar
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