The CLoud-Aerosol-Radiation Interaction and Forcing: Year 2017 (CLARIFY-2017) measurement campaign
The CLoud-Aerosol-Radiation Interaction and Forcing: Year 2017 (CLARIFY-2017) measurement campaign
复制标题
云-气溶胶-辐射相互作用和强迫：2017年(CRILEY-2017)测量活动
DOI：
10.5194/acp-21-1049-2021
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发表时间：
2021-01-27
影响因子：
6.3
通讯作者：
Zuidema, Paquita
中科院分区：
文献类型：
--
作者：
Haywood, Jim M.;Abel, Steven J.;Zuidema, Paquita
云、气溶胶和云-气溶胶-辐射影响的表征仍然是气候变化中最大的不确定性，限制了我们准确重建过去气候和预测未来气候的能力。东南大西洋是一个高大气气溶胶含量和半永久性层积云共存的区域，为研究气溶胶-辐射和气溶胶-云相互作用及其对地球辐射收支的扰动提供了最佳区域。虽然卫星测量为该区域上空的气溶胶-辐射和气溶胶-云的相互作用提供了一些有用的见解，但这些观测没有空间和时间分辨率，也没有进行过程级评估所需的精确度。该区域高空间和时间分辨率航空大气测量的详细测量数据非常稀少，限制了其在评估数值天气预报和气候模型中气溶胶建模性能方面的使用。EQUIPIFY-2017是一个主要的联盟计划，由五所主要的英国大学组成，项目合作伙伴来自英国气象局以及欧洲和美国的大学和研究中心，参与了补充性的ORACLES，LASIC和AEROCLO-sA项目。2017年的目标有四个方面：（1）提高模型对吸收生物质燃烧气溶胶的直接、半直接和间接辐射效应的估计的代表性并减少其不确定性;（2）提高我们对决定层积云微物理和辐射特性及其向积云状态过渡的过程的认识和代表性;（3）挑战、验证和改进云和气溶胶特性及其辐射影响的卫星反演;（4）改进气溶胶在天气和气候数值模式中的影响。本文描述了FAAM BAe 146仪表飞机战役的2017年部署的建模和测量策略，总结了飞行目标和飞行模式，并强调了我们初步分析的一些关键结果。
The representations of clouds, aerosols, and cloud-aerosol-radiation impacts remain some of the largest uncertainties in climate change, limiting our ability to accurately reconstruct past climate and predict future climate. The south-east Atlantic is a region where high atmospheric aerosol loadings and semi-permanent stratocumulus clouds are co-located, providing an optimum region for studying the full range of aerosol-radiation and aerosol-cloud interactions and their perturbations of the Earth's radiation budget. While satellite measurements have provided some useful insights into aerosol-radiation and aerosol-cloud interactions over the region, these observations do not have the spatial and temporal resolution, nor the required level of precision to allow for a process-level assessment. Detailed measurements from high spatial and temporal resolution airborne atmospheric measurements in the region are very sparse, limiting their use in assessing the performance of aerosol modelling in numerical weather prediction and climate models. CLARIFY-2017 was a major consortium programme consisting of five principal UK universities with project partners from the UK Met Office and European- and USA-based universities and research centres involved in the complementary ORACLES, LASIC, and AEROCLO-sA projects. The aims of CLARIFY-2017 were fourfold: (1) to improve the repre- sentation and reduce uncertainty in model estimates of the direct, semi-direct, and indirect radiative effect of absorbing biomass burning aerosols; (2) to improve our knowledge and representation of the processes determining stratocumulus cloud microphysical and radiative properties and their transition to cumulus regimes; (3) to challenge, validate, and improve satellite retrievals of cloud and aerosol properties and their radiative impacts; (4) to improve the impacts of aerosols in weather and climate numerical models. This paper describes the modelling and measurement strategies central to the CLARIFY-2017 deployment of the FAAM BAe146 instrumented aircraft campaign, summarizes the flight objectives and flight patterns, and highlights some key results from our initial analyses.