Journal cover Journal topic
Atmospheric Chemistry and Physics An interactive open-access journal of the European Geosciences Union
Journal topic

Journal metrics

Journal metrics

  • IF value: 5.509 IF 5.509
  • IF 5-year value: 5.689 IF 5-year
    5.689
  • CiteScore value: 5.44 CiteScore
    5.44
  • SNIP value: 1.519 SNIP 1.519
  • SJR value: 3.032 SJR 3.032
  • IPP value: 5.37 IPP 5.37
  • h5-index value: 86 h5-index 86
  • Scimago H <br class='hide-on-tablet hide-on-mobile'>index value: 161 Scimago H
    index 161
Discussion papers
https://doi.org/10.5194/acp-2018-1222
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-2018-1222
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 17 Dec 2018

Research article | 17 Dec 2018

Review status
This discussion paper is a preprint. A revision of the manuscript is under review for the journal Atmospheric Chemistry and Physics (ACP).

Antarctic clouds, supercooled liquid water and mixed-phase investigated with DARDAR: geographical and seasonal variations

Constantino Listowski1, Julien Delanoë1, Amélie Kirchgaessner2, Tom Lachlan-Cope2, and John King2 Constantino Listowski et al.
  • 1LATMOS/IPSL, UVSQ Université Paris-Saclay, UPMC Univ. Paris 06 Sorbonne Universités, CNRS, Guyancourt, France
  • 2British Antarctic Survey, National Environment Research Council, High Cross, Madingley Road, Cambridge, England, CB3 OET, UK

Abstract. Antarctic tropospheric clouds are investigated using the radar-lidar DARDAR (raDAR/liDAR)-MASK products. The cloud fraction is divided into the supercooled liquid water (SLW)-containing clouds and the all-ice clouds. The low-level SLW fraction varies according to temperature and sea ice fraction. It is the largest over water. In East Antarctica, the SLW fraction decreases sharply polewards. It is twice to three times higher in West Antarctica. The all-ice cloud geographical distribution is shaped by the interaction of the main low-pressure systems surrounding the continent and the orography, with little links with sea ice fraction. We demonstrate the largest impact of sea ice on SLW (mostly mixed-phase clouds, MPC) in autumn and winter, while it is almost null in summer and intermediate in spring. Monthly variability of MPC shows a maximum fraction at the end of summer and minimum in winter. Conversely, the unglaciated (pure) SLW (USLW) fraction has a maximum at the beginning of summer. Monthly evolutions of MPC and USLW fractions do not differ on the continent. This demonstrates a seasonality in the glaciation process in marine liquid-bearing clouds. From the literature, we identify the pattern of the monthly evolution of the MPC fraction as being similar to the one of the aerosols, which is related to marine biological activity. Marine bioaerosols are known to be efficient Ice Nucleating Particles (INPs). The emission of these INPs into the atmosphere from open waters would come on top of the temperature and sea ice fraction seasonalities as factors explaining the mixed-phase clouds monthly evolution.

Constantino Listowski 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
[Login for Authors/Co-Editors] [Subscribe to comment alert] Printer-friendly Version - Printer-friendly version Supplement - Supplement
Constantino Listowski et al.
Constantino Listowski et al.
Viewed  
Total article views: 395 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
299 95 1 395 2 1
  • HTML: 299
  • PDF: 95
  • XML: 1
  • Total: 395
  • BibTeX: 2
  • EndNote: 1
Views and downloads (calculated since 17 Dec 2018)
Cumulative views and downloads (calculated since 17 Dec 2018)
Viewed (geographical distribution)  
Total article views: 292 (including HTML, PDF, and XML) Thereof 291 with geography defined and 1 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 
Cited  
Saved  
No saved metrics found.
Discussed  
No discussed metrics found.
Latest update: 25 Mar 2019
Publications Copernicus
Download
Short summary
Using satellite cloud products we investigate the distribution and variation of cloud occurrences in the Antarctic (60 °S–90 °S), and more particularly of the supercooled liquid water (SLW). In distinguishing between pure SLW and SLW mixed with ice we pin down unreported variations of low-level mixed-phase clouds so far, which point to the role of biological emissions, in addition to the atmospheric temperature and the sea ice fraction, as driver of the seasonal cycle of mixed-phase clouds.
Using satellite cloud products we investigate the distribution and variation of cloud...
Citation