Journal metrics

Journal metrics

  • IF value: 3.248 IF 3.248
  • IF 5-year value: 3.650 IF 5-year 3.650
  • CiteScore value: 3.37 CiteScore 3.37
  • SNIP value: 1.253 SNIP 1.253
  • SJR value: 1.869 SJR 1.869
  • IPP value: 3.29 IPP 3.29
  • h5-index value: 47 h5-index 47
  • Scimago H index value: 60 Scimago H index 60
Discussion papers | Copyright
https://doi.org/10.5194/amt-2018-182
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 06 Jun 2018

Research article | 06 Jun 2018

Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Atmospheric Measurement Techniques (AMT).

Extinction and Optical Depth Retrievals for CALIPSO's Version 4 Data Release

Stuart A. Young1, Mark A. Vaughan2, Anne Garnier1, Jason L. Tackett1, James B. Lambeth1, and Kathleen A. Powell2 Stuart A. Young et al.
  • 1Science Systems and Applications, Inc. (SSAI), Hampton, VA 23666, USA
  • 2NASA Langley Research Center, Hampton, VA 23681, USA

Abstract. The Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP) on board the Cloud-Aerosol Lidar Infrared Pathfinder Satellite Observations (CALIPSO) satellite has been making near-global height-resolved measurements of cloud and aerosol layers since mid-June 2006. Version 4.10 (V4) of the CALIOP data products, released in November, 2016, introduces extensive upgrades to the algorithms used to retrieve the spatial and optical properties of these layers, and thus there are both obvious and subtle differences between V4 and previous data releases. This paper describes the improvements made to the extinction retrieval algorithms and illustrates the impacts of these changes on the extinction and optical depth estimates reported in the CALIPSO lidar level 2 data products. The lidar ratios for both aerosols and ice clouds are generally higher than in previous data releases, resulting in generally higher extinction coefficients and optical depths in V4. A newly implemented algorithm for retrieving extinction coefficients in opaque layers is described and its impact examined. Precise lidar ratio estimates are also retrieved in these opaque layers. For semi-transparent cirrus clouds, comparisons between CALIOP V4 optical depths and the optical depths reported by MODIS collection 6 show substantial improvements relative to earlier comparisons between CALIOP version 3 and MODIS collection 5.

Download & links
Stuart A. Young et al.
Interactive discussion
Status: final response (author comments only)
Status: final response (author comments only)
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Stuart A. Young et al.
Stuart A. Young et al.
Viewed
Total article views: 432 (including HTML, PDF, and XML)
HTML PDF XML Total Supplement BibTeX EndNote
323 103 6 432 23 8 8
  • HTML: 323
  • PDF: 103
  • XML: 6
  • Total: 432
  • Supplement: 23
  • BibTeX: 8
  • EndNote: 8
Views and downloads (calculated since 06 Jun 2018)
Cumulative views and downloads (calculated since 06 Jun 2018)
Viewed (geographical distribution)
Total article views: 432 (including HTML, PDF, and XML) Thereof 430 with geography defined and 2 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 
Cited
Saved
No saved metrics found.
Discussed
No discussed metrics found.
Latest update: 17 Aug 2018
Publications Copernicus
Special issue
Download
Short summary
This paper describes comprehensive upgrades to the algorithms used to retrieve altitude-resolved profiles of cloud and aerosol extinction coefficients from the elastic backscatter measurements made by the space-based CALIPSO lidar. The CALIPSO version 4 data products generated by these new algorithms are explored in detail, and the many areas of improvement are highlighted using extensive comparisons both to previous versions and to collocated measurements made by space-based passive sensors.
This paper describes comprehensive upgrades to the algorithms used to retrieve altitude-resolved...
Citation
Share