Total column optical depths retrieved from CALIPSO lidar ocean surface backscatter

Ryan, Robert A.; Vaughan, Mark A.; Rodier, Sharon D.; Tackett, Jason L.; Reagan, John A.; Ferrare, Richard A.; Hair, Johnathan W.; Smith, John A.; Getzewich, Brian J.

doi:https://doi.org/10.5194/amt-17-6517-2024

Articles | Volume 17, issue 22

https://doi.org/10.5194/amt-17-6517-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/amt-17-6517-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 17, issue 22

Research article

|

14 Nov 2024

Research article |

| 14 Nov 2024

Total column optical depths retrieved from CALIPSO lidar ocean surface backscatter

Robert A. Ryan, Mark A. Vaughan, Sharon D. Rodier, Jason L. Tackett, John A. Reagan, Richard A. Ferrare, Johnathan W. Hair, John A. Smith, and Brian J. Getzewich

Data sets

MERRA-2 inst1_2d_asm_Nx: 2d,1-Hourly,Instantaneous,Single-Level,Assimilation,Single-Level Diagnostics V5.12.4 GMAO (Global Modeling and Assimilation Office) https://doi.org/10.5067/3Z173KIE2TPD

MERRA-2 inst3_3d_asm_Nv: 3d,3-Hourly, Instantaneous, Model-Level, Assimilation, Assimilated Meteorological Fields V5.12.4 GMAO (Global Modeling and Assimilation Office) https://doi.org/10.5067/WWQSXQ8IVFW8

MODIS Atmosphere L2 Aerosol Product R. Levy and C. Hsu https://doi.org/10.5067/MODIS/MOD04_L2.061

MODIS Geolocation Fields Product MCST (MODIS Characterization Support Team) https://doi.org/10.5067/MODIS/MYD03.061

CALIPSO Night Validation Flights High Spectral Resolution Lidar (HSRL-2) Data NASA/LARC/SD/ASDC https://doi.org/10.5067/SUBORBITAL/CALIPSO-NVF/DATA001

CALIPSO Lidar Level 1B profile data, V4-51 NASA/LARC/SD/ASDC https://doi.org/10.5067/CALIOP/CALIPSO/CAL_LID_L1-Standard-V4-51

CALIPSO Lidar Level 2 5km Merged Layer, V4-51 NASA/LARC/SD/ASDC https://doi.org/10.5067/CALIOP/CALIPSO/CAL_LID_L2_05kmMLay-Standard-V4-51

CALIPSO Lidar Level 2 Vertical Feature Mask (VFM), V4-51 NASA/LARC/SD/ASDC https://doi.org/10.5067/CALIOP/CALIPSO/CAL_LID_L2_VFM-Standard-V4-51

RSS AQUA AMSR-E Daily Environmental Suite on 0.25 deg grid F. J. Wentz et al. https://doi.org/10.56236/RSS-bm

RSS GCOM-W1 AMSR2 Daily Environmental Suite on 0.25 deg grid F. J. Wentz et al. https://doi.org/10.56236/RSS-bq

Short summary

We introduce Ocean Derived Column Optical Depth (ODCOD), a new way to estimate column optical depths using Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP) measurements from the ocean surface. ODCOD estimates include contributions from particulates in the full column, which CALIOP estimates do not, making it a complement measurement to CALIOP’s standard estimates. We find that ODCOD compares well with other established data sets in the daytime but tends to estimate higher at night.