Investigation of ice particle and cloud drop residues using the counterflow virtual impactor technique onboard HALO (HALO-CVI)

使用 HALO (HALO-CVI) 上的逆流虚拟撞击器技术研究冰粒和云滴残留物

• 批准号: 48902976
• 负责人: Dr. Stephan Mertes
• 金额: --
• 依托单位: Abteilung Fernerkundung atmosphärischer Prozesse
• 依托单位国家: 德国
• 项目类别: Infrastructure Priority Programmes
• 财政年份: 2007
• 资助国家: 德国
• 起止时间: 2006-12-31 至 2014-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/48902976?language=en
• 关键词: Investigation; ice; particle; cloud; drop

The subset of atmospheric particles which serve as cloud condensation and ice nuclei (CCN and IN) determine the aerosol indirect effect, which has one of the largest uncertainties in predicting future climate. Especially the influence of anthropogenic particles on microphysical properties of liquid, mixed-phase and glaciated clouds and thus on their radiative properties and precipitation behavior is hardly known. The identification of CCN and IN measured as residues of drops and ice particles of different cloud types from aircraft will improve our understanding of these issues. An inlet system sampling liquid and frozen hydrometeors and releasing the contained residues for analysis, called HALO-CVI, has been developed within the first phase of the HALO SPP. Now, it is proposed to apply this inlet onboard HALO as part of the designated scientific payload of the three cloud missions ML-CIRRUS, ACRIDICON and NARVAL. As instrument of these missions, the HALO-CVI would contribute to investigate the influence of aerosol particles on the formation and evolution of aviation modified and natural cirrus, extra-tropical deep convective cloud systems and trade wind cumuli. Furthermore, concept studies of a drop pre-segregating CVI dedicated for IN analysis in mixed-phase clouds are proposed as a starting point for a new inlet development beyond the second phase of the HALO priority program.

作为云凝结和冰核（云凝结核和冰核）的大气粒子子集决定气溶胶的间接效应，这是预测未来气候的最大不确定性之一。特别是人为粒子对液态云、混合相云和冰川云的微物理特性的影响，以及对它们的辐射特性和降水行为的影响，几乎不为人知。识别CCN和IN作为飞机上不同云类型的水滴和冰粒的残留物测量，将提高我们对这些问题的理解。在HALO SPP的第一阶段，开发了一个入口系统，对液体和冷冻水凝物进行取样，并释放所含残留物进行分析，称为HALO-CVI。现在，建议将该进气道应用于HALO，作为三个云飞行任务ML-CIRRUS、ACRIDICON和NARVAL的指定科学有效载荷的一部分。作为这些飞行任务的工具，HALO-CVI将有助于调查气溶胶粒子对航空改良卷云和自然卷云、热带外深对流云系和信风积云的形成和演变的影响。此外，提出了专用于混合相云中IN分析的液滴预分离CVI的概念研究，作为HALO优先计划第二阶段之后新进气道开发的起点。

项目成果

Aerosol properties, source identification, and cloud processing in orographic clouds measured by single particle mass spectrometry on a central European mountain site during HCCT-2010

• DOI: 10.5194/acp-16-505-2016
• 发表时间: 2015-09
• 期刊: Atmospheric Chemistry and Physics
• 影响因子: 6.3
• 作者: A. Roth;J. Schneider;T. Klimach;S. Mertes;D. Pinxteren;H. Herrmann;S. Borrmann

Assessment of cloud supersaturation by size-resolved aerosol particle and cloud condensation nuclei (CCN) measurements

• DOI: 10.5194/amt-7-2615-2014
• 发表时间: 2014-08
• 期刊: Atmospheric Measurement Techniques
• 影响因子: 3.8
• 作者: M. Krüger;S. Mertes;T. Klimach;Yafang Cheng;H. Su;J. Schneider;M. Andreae;U. Pöschl;D. Rose

Cloud water composition during HCCT-2010: Scavenging efficiencies, solute concentrations, and droplet size dependence of inorganic ions and dissolved organic carbon

• DOI: 10.5194/acp-16-3185-2016
• 发表时间: 2015-09
• 期刊: Atmospheric Chemistry and Physics
• 影响因子: 6.3
• 作者: D. Pinxteren;K. Fomba;S. Mertes;K. Müller;G. Spindler;Johannes Schneider;Taehyoung Lee;J. Collett-J.-Coll

Do Cloud Properties in a Puerto Rican Tropical Montane Cloud Forest Depend on Occurrence of Long-Range Transported African Dust?

波多黎各热带山地云林中的云特性是否取决于远距离输送的非洲沙尘的出现？

• DOI: 10.1007/s00024-014-0830-y
• 发表时间: 2014
• 期刊: Pure and Applied Geophysics
• 影响因子: 2
• 作者: Spiegel;N. Buchmann;O. L. Mayol-Bracero;L. A. Cuadra Rodríguez;C. J. Valle Díaz;K. A. Prather;S. Mertes;W. Eugster
• 通讯作者: W. Eugster