Articles | Volume 14, issue 5
Atmos. Meas. Tech., 14, 3253–3276, 2021
https://doi.org/10.5194/amt-14-3253-2021

Special issue: CALIPSO version 4 algorithms and data products

Atmos. Meas. Tech., 14, 3253–3276, 2021
https://doi.org/10.5194/amt-14-3253-2021

Research article 04 May 2021

Research article | 04 May 2021

Version 4 CALIPSO Imaging Infrared Radiometer ice and liquid water cloud microphysical properties – Part I: The retrieval algorithms

Anne Garnier et al.

Data sets

CALIPSO Imaging Infrared Radiometer (IIR) Level 2 Track data, Beta V3-01 NASA https://doi.org/10.5067/IIR/CALIPSO/L2_Track-Beta-V3-01

CALIPSO Infrared Imaging Radiometer (IIR) Level 2 Track, V4-20 NASA https://doi.org/10.5067/CALIOP/CALIPSO/CAL_IIR_L2_Track-Standard-V4-20

Short summary
The IIR Level 2 data products include cloud effective emissivities and cloud microphysical properties such as effective diameter (De) and ice or liquid water path estimates. This paper (Part I) describes the improvements in the V4 algorithms compared to those used in the version 3 (V3) release, while results are presented in a companion paper (Part II).