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Title: Airborne Multiwavelength High Spectral Resolution Lidar (HSRL-2) observations during TCAP 2012: vertical profiles of optical and microphysical properties of a smoke/urban haze plume over the northeastern coast of the US

Journal Article · · Atmospheric Measurement Techniques (Online)
ORCiD logo [1];  [2];  [2];  [2];  [2];  [3];  [2];  [2];  [2];  [2];  [2];  [2];  [2];  [4];  [4];  [4]
  1. Univ. of Hertfordshire, Hertfordshire (United Kingdom); NASA Langley Research Center, Hampton, VA (United States)
  2. NASA Langley Research Center, Hampton, VA (United States)
  3. Physics Instrumentation Center, Troitsk (Russia)
  4. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
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Here, we present measurements acquired by the world's first airborne 3 backscatter (β) + 2 extinction (α) High Spectral Resolution Lidar (HSRL-2). HSRL-2 measures particle backscatter coefficients at 355, 532, and 1064 nm, and particle extinction coefficients at 355 and 532 nm. The instrument has been developed by the NASA Langley Research Center. The instrument was operated during Phase 1 of the Department of Energy (DOE) Two-Column Aerosol Project (TCAP) in July 2012. We observed pollution outflow from the northeastern coast of the US out over the western Atlantic Ocean. Lidar ratios were 50–60 sr at 355 nm and 60–70 sr at 532 nm. Extinction-related Ångström exponents were on average 1.2–1.7, indicating comparably small particles. Our novel automated, unsupervised data inversion algorithm retrieved particle effective radii of approximately 0.2 μm, which is in agreement with the large Angstrom exponents. We find good agreement with particle size parameters obtained from coincident in situ measurements carried out with the DOE Gulfstream-1 aircraft.

Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC05-76RL01830
OSTI ID:
1167631
Report Number(s):
PNNL-SA-100132; KP1701000
Journal Information:
Atmospheric Measurement Techniques (Online), Vol. 7, Issue 10; ISSN 1867-8548
Publisher:
European Geosciences UnionCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 65 works
Citation information provided by
Web of Science

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Cited By (15)

Retrieval of Cloud Condensation Nuclei Number Concentration Profiles From Lidar Extinction and Backscatter Data journal June 2018
Tentative detection of clear-air turbulence using a ground-based Rayleigh lidar journal January 2016
Improved identification of the solution space of aerosol microphysical properties derived from the inversion of profiles of lidar optical data, part 3: case studies journal January 2018
Automated, unsupervised inversion of multiwavelength lidar data with TiARA: assessment of retrieval performance of microphysical parameters using simulated data journal January 2019
Preliminary Studies on Atmospheric Monitoring by Employing a Portable Unmanned Mie-Scattering Scheimpflug Lidar System journal April 2019
Observations of the spectral dependence of linear particle depolarization ratio of aerosols using NASA Langley airborne High Spectral Resolution Lidar journal January 2015
HSRL-2 aerosol optical measurements and microphysical retrievals vs. airborne in situ measurements during DISCOVER-AQ 2013: an intercomparison study journal January 2017
Combining airborne in situ and ground-based lidar measurements for attribution of aerosol layers journal January 2018
3+2 + X: what is the most useful depolarization input for retrieving microphysical properties of non-spherical particles from lidar measurements using the spheroid model of Dubovik et al. (2006)? journal January 2019
Aerosol retrievals from different polarimeters during the ACEPOL campaign using a common retrieval algorithm journal January 2020
About the effects of polarising optics on lidar signals and the Δ90 calibration journal January 2016
HSRL-2 aerosol optical measurements and microphysical retrievals vs. airborne in situ measurements during DISCOVER-AQ 2013: an intercomparison study journal May 2016
Combining airborne in situ and ground-based lidar measurements for attribution of aerosol layers journal January 2018
Using Active Remote Sensing to Evaluate Cloud-Climate Feedbacks: a Review and a Look to the Future journal May 2017
Elevated aerosol layers modify the O2–O2 absorption measured by ground-based MAX-DOAS journal June 2016

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Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS