Forcing in the long-wave spectrum due to aerosol-cloud interactions: satellite and climate modelling vs. HALO (FLASH)

由于气溶胶-云相互作用而产生的长波谱强迫：卫星和气候模型与 HALO (FLASH)

• 批准号: 316624352
• 负责人: Professor Dr. Johannes Quaas
• 金额: --
• 依托单位: Institut für Meteorologie
• 依托单位国家: 德国
• 项目类别: Infrastructure Priority Programmes
• 财政年份: 2016
• 资助国家: 德国
• 起止时间: 2015-12-31 至 2018-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/316624352?language=en
• 关键词: Forcing; long; wave; spectrum; due

The radiative forcing by anthropogenic aerosols via aerosol-cloud interactions is the main uncertainty in quantifying current forcing of climate change. While some progress has been achieved for liquid water clouds that dominate the forcing in the short-wave (solar) part of the electromagnetic spectrum, for the forcing in the long-wave (terrestrial) spectrum only crude estimates from general circulation models exist. In preliminary work, we have developed a suggestion how active satellite remote sensing might be used to characterise ice crystal number concentrations and co-incident aerosol concentrations, and thus might allow for an assessment of the aerosol forcing in the terrestrial spectrum. However, the satellite remote sensing data are highly uncertain and need to be validated using reference data. In FLASH, we propose to (i) validate the satellite ice crystal concentration and its sensitivity to temperature, vertical wind, cloud regime, and aerosol conditions using the large statistics now available from HALO (ACRIDICON, ML-CIRRUS), (ii) verify the spaceborne retrievals with airborne retrievals using the lidar and radar onboard HALO (NARVAL, NARVAL-II, NAWDEX) that have better spatiotemporal resolution, (iii) make use of climate model simulations for interpretation of the statistical relationships and (iv) work towards an estimate and uncertainty characterisation of the aerosol radiative forcing in the long-wave spectrum. Within SPP 1294, FLASH is intends to exploit the exiting data and work with upcoming data from multiple campaigns in an integrative way, towards the goals of achieving a better quantification of the aerosol-climate forcing, a validation of innovative and crucial satellite retrievals, as well as an evaluation and improvement of essential parameterisations in climate models.

人为气溶胶通过气溶胶-云相互作用产生的辐射强迫是目前量化气候变化强迫的主要不确定性。虽然在电磁波谱短波（太阳）部分的强迫中占主导地位的液态水云方面取得了一些进展，但在长波（陆地）波谱的强迫方面，只存在来自大气环流模型的粗略估计。在初步工作中，我们已经提出了一个建议，如何主动卫星遥感可能被用来测量冰晶数浓度和同时发生的气溶胶浓度，从而可能允许在陆地光谱气溶胶强迫的评估。然而，卫星遥感数据具有高度的不确定性，需要使用参考数据进行验证。在FLASH中，我们建议（i）使用HALO现有的大量统计数据验证卫星冰晶浓度及其对温度、垂直风、云系和气溶胶条件的敏感性（ACRIDICON，ML-CIRRUS），㈡使用HALO机载激光雷达和雷达验证星载回收与机载回收（NARVAL，NARVAL-II，NAWDEX）具有更好的时空分辨率，（iii）利用气候模式模拟解释统计关系;（iv）努力估算和确定长期气溶胶辐射强迫的不确定性特征，波谱在SPP 1294中，FLASH打算利用现有数据，并以综合的方式与来自多个活动的即将到来的数据一起工作，以实现更好地量化气溶胶气候强迫的目标，验证创新和关键的卫星检索，以及评估和改进气候模型中的基本参数化。

项目成果

Ice crystal number concentration estimates from lidar–radar satellite remote sensing – Part 1: Method and evaluation

• DOI: 10.5194/acp-18-14327-2018
• 发表时间: 2017-03
• 期刊: Atmospheric Chemistry and Physics
• 影响因子: 6.3
• 作者: O. Sourdeval;E. Gryspeerdt;M. Krämer;T. Goren;J. Delanoë;A. Afchine;F. Hemmer;J. Quaas

Separating radiative forcing by aerosol–cloud interactions and rapid cloud adjustments in the ECHAM–HAMMOZ aerosol–climate model using the method of partial radiative perturbations

• DOI: 10.5194/acp-19-15415-2019
• 发表时间: 2019-12
• 期刊: Atmospheric Chemistry and Physics
• 影响因子: 6.3
• 作者: J. Mülmenstädt;E. Gryspeerdt;M. Salzmann;P. Ma;S. Dipu;J. Quaas