Radiative Properties of Sahara Dust: In-situ Aircraft Measurements and Model Calculations

撒哈拉沙尘的辐射特性：现场飞机测量和模型计算

• 批准号: 5425992
• 负责人: Professor Dr. Manfred Wendisch
• 金额: --
• 依托单位: Institut für Meteorologie
• 依托单位国家: 德国
• 项目类别: Research Units
• 财政年份: 2004
• 资助国家: 德国
• 起止时间: 2003-12-31 至 2008-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/5425992?language=en
• 关键词: Radiative; Properties; Sahara; Dust; situ

This project is part of the DFG research group proposal SAMUM (SAharan Mineral dUst ExperiMent). It concerns the radiative properties of Sahara desert dust particles using a combination of airborne field measurements, radiation simulations, and satellite data. The airborne measurements will be carried out within the joint SAMUM field campaign in Morocco, a suitable site close to a major dust source (Sahara desert). They include vertical profile measurements of desert dust microphysical properties. The focus is on the measurement of up- and downward spectral irradiances in the wavelength range between 295 and 1.700 nm. The calculations focus on particle nonspericity effects, which are crucial for the radiative properties of desert dust aerosol. The input for the simulations is based on laboratory and field measurements, which are conducted within this project or delivered by other partners of the SAMUM research group. The results of the simulations will be compared with the aircraft measurements. Such a combination of sophisticated measurements and appropriate radiative transfer calculations is unique for dust aerosol particles and will enhance the understanding of their radiative properties.

该项目是DFG研究小组建议SAMUM（撒哈拉矿物粉尘经验）的一部分。它涉及到撒哈拉沙漠尘埃粒子的辐射特性，结合使用空中现场测量，辐射模拟和卫星数据。空中测量将在摩洛哥的SAMUM联合实地活动中进行，这是一个靠近主要沙尘源（撒哈拉沙漠）的合适地点。它们包括对沙漠尘埃微物理特性的垂直剖面测量。重点是在295和1.700 nm之间的波长范围内测量向上和向下的光谱辐照度。计算重点关注粒子非球形效应，这对于沙漠沙尘气溶胶的辐射特性至关重要。模拟的输入是基于实验室和现场测量，这些测量在本项目内进行或由SAMUM研究小组的其他合作伙伴提供。模拟结果将与飞机测量结果进行比较。这种复杂的测量和适当的辐射传输计算相结合是独特的尘埃气溶胶粒子，并将提高其辐射特性的理解。