Study of cloud condensation nuclei and ice nucleating particles during the Antarctic Circumnavigation Expedition (ACE)

南极环航期间云凝结核和冰核粒子研究

• 批准号: 366126411
• 负责人: Dr.-Ing. Frank Stratmann
• 金额: --
• 依托单位: Leibniz-Institut für Troposphärenforschung e.V. (TROPOS)
• 依托单位国家: 德国
• 项目类别: Infrastructure Priority Programmes
• 财政年份: 2017
• 资助国家: 德国
• 起止时间: 2016-12-31 至 2020-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/366126411?language=en
• 关键词: Study; cloud; condensation; nuclei; ice

The Southern Ocean (SO) region is the most pristine aerosol environment on Earth, but almost the entire region is considered as under-sampled. As partner of the -Study of Preindustrial-like-Aerosol Climate Effects- (SPACE) project we participate in the unprecedented Antarctic Circumnavigation Expedition (ACE), giving us the unique opportunity to conduct high quality aerosol measurements in this remote region. ACE-SPACE in general aims at a detailed characterization of the pristine aerosol which is unaffected by anthropogenic pollution and therefore represents an aerosol comparable to that in a pre-industrial atmosphere. Our, i.e., TROPOS special focus in context of ACE-SPACE is on aerosol particles involved in climate relevant aerosol cloud interactions, specifically on particles able to act as cloud condensation (CCN), as well as particles able to nucleate ice (INP). During ACE we will perform 3 months of continuous INP- and CCN-related in-situ measurements together with aerosol particle filter sampling on-board the Russian ice-breaker Akademik Tryoshnikov. As within ACE-SPACE we are only funded for carrying out the measurements, and chemical characterization of the filter samples, here we apply for funding (mainly 1 PhD student, 67% for three years) for the scientific evaluation, physical analysis, and interpretation of the collected samples and data. The suggested work will yield unique data concerning INP and CCN number concentrations in the SO region, as well as information with respect to the INPs ice nucleation and CCNs and activation behaviour. These data will be linked with meteorological information (e.g. back trajectories) and information on the chemical composition of the sampled aerosol particles for identifying the INPs and CCNs sources. The quantitative information on preindustrial-like CCN and INP compiled in the framework of the present proposal are made available within the SPP, but are also used by our partners within the ACE-SPACE project to evaluate and constrain global models and satellite retrieval methods.

南大洋（SO）区域是地球上最原始的气溶胶环境，但几乎整个区域都被认为是采样不足。作为前工业化气溶胶气候效应研究（SPACE）项目的合作伙伴，我们参加了前所未有的南极环航考察（ACE），这使我们有机会在这个偏远地区进行高质量的气溶胶测量。ACE-SPACE总体上旨在详细描述未受人为污染影响的原始气溶胶，因此代表了与工业化前大气中的气溶胶相当的气溶胶。我们的，即，在ACE-SPACE背景下，TROPOS特别关注与气候相关的气溶胶云相互作用中涉及的气溶胶粒子，特别是能够充当云凝结（CCN）的粒子以及能够成核冰（INP）的粒子。在ACE期间，我们将进行为期3个月的连续INP和CCN相关原位测量，并在俄罗斯破冰船Akademik Tryoshnikov上进行气溶胶颗粒过滤器采样。由于在ACE-SPACE中，我们仅获得用于进行测量和过滤器样品化学表征的资助，因此我们申请资助（主要是1名博士生，三年67%）用于科学评估，物理分析以及对收集的样品和数据的解释。建议的工作将产生独特的数据，关于INP和CCN数浓度在SO区域，以及信息相对于INPs冰成核和CCN和激活行为。这些数据将与气象信息（如后向轨迹）和关于采样气溶胶颗粒化学成分的信息联系起来，以确定INPs和CCN来源。在本建议框架内汇编的关于前工业化的类云凝结核和国际核物理方案的定量信息可在最高人民检察院内获得，但我们的合作伙伴在ACE-SPACE项目内也使用这些信息来评价和限制全球模型和卫星检索方法。