Comparison of aerosol backscatter coefficient profiles at 1064 nm from CALIPSO and ground-based ceilometer

Thaize Baroni; Praveen Pandey; Jana Preissler; Gary Gimmestad; Colin O'Dowd

doi:10.1117/12.2573064

21 September 2020 Comparison of aerosol backscatter coefficient profiles at 1064 nm from CALIPSO and ground-based ceilometer

Thaize Baroni, Praveen Pandey, Jana Preissler, Gary Gimmestad, Colin O'Dowd

Author Affiliations +

Proceedings Volume 11531, Remote Sensing of Clouds and the Atmosphere XXV; 115310N (2020) https://doi.org/10.1117/12.2573064
Event: SPIE Remote Sensing, 2020, Online Only

Abstract

This pilot study investigates the direct comparison of backscatter coefficient profiles at 1064 nm which were measured by CALIOP (Cloud-Aerosol Lidar with Orthogonal Polarization) and by a ground-based ceilometer located at the west coast of Ireland. Data recorded between 2013 to 2016 is used to investigate the challenges and limitations in performing such a comparison. The standard Level 2 CALIOP Aerosol Profile version 4 product is compared to data from a ground-based Jenoptik CHM15K ceilometer. A statistical analysis considering CALIOP overpasses within 100 km from the ceilometer is presented taking into account different along-track averages in CALIOP data (5 km, 15 km, 25 km, 35 km and 100 km) at the closest approach. The mean bias calculated from the correlative measurements between CALIOP and the ground-based ceilometer at Mace Head for cloud-free scenarios shows negative bias for 80% of the cases. The comparison of these results with HYSPLIT shows that air samples with higher or lesser content of marine aerosols produced different biases between the measurements. To our knowledge, this is the first study that investigates the limitations and capabilities in comparing CALIOP and ground-based ceilometer measurements using the 1064 nm wavelength.

Conference Presentation

Citation Download Citation

Thaize Baroni, Praveen Pandey, Jana Preissler, Gary Gimmestad, and Colin O'Dowd "Comparison of aerosol backscatter coefficient profiles at 1064 nm from CALIPSO and ground-based ceilometer", Proc. SPIE 11531, Remote Sensing of Clouds and the Atmosphere XXV, 115310N (21 September 2020); https://doi.org/10.1117/12.2573064

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available