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- Title
Evaluation of UV Aerosol Retrievals from an Ozone Lidar.
- Authors
Kuang, Shi; Wang, Bo; Newchurch, Michael J.; Tucker, Paula; Eloranta, Edwin W.; Garcia, Joseph P.; Razenkov, Ilya; Sullivan, John T.; Berkoff, Timothy A.; Gronoff, Guillaume; Lei, Liqiao; Senff, Christoph J.; Langford, Andrew O.; Leblanc, Thierry; Natraj, Vijay
- Abstract
Aerosol retrieval using ozone lidars in the ultraviolet (UV) band is challenging but necessary for correcting aerosol interference in ozone retrieval and for studying the ozone-aerosol correlations. This study describes the aerosol retrieval algorithm for a tropospheric ozone lidar, quantifies the retrieval error budget, and intercompares the aerosol retrieval products at 299nm with those at 532nm from a high spectral resolution lidar (HSRL). After the cloud-contaminated data is filtered out, the aerosol backscatter or extinction coefficients at a 30-m and 10-min resolution retrieved by the ozone lidar are highly correlated with the HSRL products, with a coefficient of 0.95 suggesting that the ozone lidar can reliably measure aerosol structures with high spatio-temporal resolution when the signal-to-noise ratio is sufficient. The actual uncertainties of the aerosol retrieval from the ozone lidar generally agree with our theoretical analysis. The backscatter color ratio (backscatter-related exponent of wavelength dependence) linking the coincident data measured by the two instruments at 299 and 532nm is 1.34±0.11 while the Ångström (extinction-related) exponent is 1.49±0.16 for a mixture of urban and fire smoke aerosols within the troposphere above Huntsville, AL, USA.
- Subjects
HUNTSVILLE (Ala.); OZONE; AEROSOLS; LIDAR; TROPOSPHERIC ozone; CARBONACEOUS aerosols; MEASURING instruments
- Publication
Atmospheric Measurement Techniques Discussions, 2020, p1
- ISSN
1867-8610
- Publication type
Article
- DOI
10.5194/amt-2020-40