Ground-Based Remote Sensing of Aerosol, Clouds, Dynamics, and Precipitation in Antarctica: First Results from the 1-Year COALA Campaign at Neumayer Station III in 2023

Author:

Radenz Martin1ORCID,Engelmann Ronny1ORCID,Henning Silvia1ORCID,Schmithüsen Holger2ORCID,Baars Holger1ORCID,Frey Markus M.3ORCID,Weller Rolf2ORCID,Bühl Johannes1ORCID,Jimenez Cristofer1ORCID,Roschke Johanna1ORCID,Muser Lukas Ole2ORCID,Wullenweber Nellie2,Zeppenfeld Sebastian1ORCID,Griesche Hannes1ORCID,Wandinger Ulla1ORCID,Seifert Patric1ORCID

Affiliation:

1. Leibniz Institute for Tropospheric Research, Leipzig, Germany;

2. Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany;

3. British Antarctic Survey, Cambridge, United Kingdom

Abstract

Abstract Novel observations of aerosol and clouds by means of ground-based remote sensing have been performed in Antarctica over the Ekström Ice Shelf on the coast of Dronning Maud Land at Neumayer Station III (70.67°S, 8.27°W) from January to December 2023. The deployment of the OCEANET-Atmosphere remote sensing observatory in the framework of the Continuous Observations of Aerosol-Cloud Interaction (COALA) campaign has brought Aerosol, Clouds and Trace Gases Research Infrastructure (ACTRIS) aerosol and cloud profiling capabilities next to meteorological and air chemistry in situ observations at the Antarctic station. We present an overview of the site, the instrumental setup, and data analysis strategy and introduce 3 scientific highlights from austral fall and winter, namely, 1) observations of a persistent mixed-phase cloud embedded in a plume of marine aerosol. Remote sensing–based retrievals of cloud-relevant aerosol properties and cloud microphysical parameters confirm that the free-tropospheric mixed-phase cloud layer formed in an aerosol-limited environment. 2) Two extraordinary warm air intrusions: one with intense snowfall produced the equivalent of 10% of the yearly snow accumulation and a second one with record-breaking maximum temperatures and heavy icing due to supercooled drizzle. 3) Omnipresent aerosol layers in the stratosphere. Our profiling capabilities could show that 50% of the 500-nm aerosol optical depth of 0.06 was caused by stratospheric aerosol, while the troposphere was usually pristine. As demonstrated by these highlights, the 1-yr COALA observations will serve as a reference dataset for the vertical structure of aerosol and clouds above the region, enabling future observational and modeling studies to advance understanding of atmospheric processes in Antarctica.

Publisher

American Meteorological Society

Reference106 articles.

1. Seasonal variations of Antarctic clouds observed by CloudSat and CALIPSO satellites;Adhikari, L.,2012

2. Radar-derived snowfall microphysical properties at Davis, Antarctica;Alexander, S. P.,2023

3. Ozone depletion in the Arctic and Antarctic stratosphere induced by wildfire smoke;Ansmann, A.,2022

4. Aerosol profiling with lidar in the Amazon basin during the wet and dry season;Baars, H.,2012

5. An overview of the first decade of PollyNET: An emerging network of automated Raman-polarization lidars for continuous aerosol profiling;Baars, H.,2016

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3