Retrieval of ocean subsurface particulate backscattering coefficient from space-borne CALIOP lidar measurements

Xiaomei Lu (1, 2) , Yongxiang Hu (2) , Jacques Pelon (3) , Charles Trepte (2) , Katie Liu (2) , Sharon Rodier (2, 1) , Shan Zeng (2, 1) , Patricia L. Lucker (2, 1) , Ron Verhappen (2, 1) , Jamie Wilson (2, 1) , Claude Audouy (4) , Christophe Ferrier (4) , Said Haouchine (4) , Bill Hunt (2, 1) , Brian Getzewich (2, 1)

1 SSAI - Science Systems and Applications, Inc. [Lanham]
2 LaRC - NASA Langley Research Center [Hampton]
3 TROPO - LATMOS
4 CNES - Centre National d’Études Spatiales [Paris]

A new approach has been proposed to determine ocean subsurface particulate backscattering coefficient b from CALIOP 30° off-nadir lidar measurements. The new method also provides estimates of the particle volume scattering function at the 180° scattering angle. The CALIOP based layer-integrated lidar backscatter and particulate backscattering coefficients are compared with the results obtained from MODIS ocean color measurements. The comparison analysis shows that ocean subsurface lidar backscatter and particulate backscattering coefficient b_bp can be accurately obtained from CALIOP lidar measurements, thereby supporting the use of space-borne lidar measurements for ocean subsurface studies.

Keywords: Cloud-Aerosol Lidar; CALIOP Lidar; CALIPSO Satellite; Instrument; Earth Radiation; Climate; Global Ocean Carbon; Ocean Subsurface Backscatter; Backscattering

Domains: Physics [physics]; Physics [physics]; Atmospheric and Oceanic Physics [physics.ao-ph]

Xiaomei Lu, Yongxiang Hu, Jacques Pelon, Charles Trepte, Katie Liu, et al.. Retrieval of ocean subsurface particulate backscattering coefficient from space-borne CALIOP lidar measurements. Optics Express, 2016, 24 (25), pp.29001-29008. ⟨10.1364/OE.24.029001⟩. ⟨insu-01457580⟩