Improved Understanding of Thermosphere-Mesosphere-Stratosphere-Troposphere Coupling Using Lidar Measurements

使用激光雷达测量提高对热层-中间层-平流层-对流层耦合的理解

• 批准号: 41677-2013
• 负责人: Sica, Robert
• 金额: $ 1.97万
• 依托单位: University of Western Ontario
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=633479
• 关键词: Improved; Understanding; Thermosphere; Mesosphere; Stratosphere

Solar-terrestrial relations is the study of how solar light and particle energy enters and is distributed through Earth's atmosphere-ionosphere-magnetosphere system. The ionosphere is the electrically charged region of the upper atmosphere (80 to 500 km above Earth's surface) while the magnetosphere is the extended region of space around Earth resulting from the Sun's magnetic field interacting with Earth's magnetic field. The atmospheric component traditionally emphasizes the interaction of solar energy with the lower atmosphere. Over the last 20 years it has been realized that the coupling of the lower atmosphere with the upper atmosphere and ionosphere is critical to understanding the system. Thus, simultaneous measurements over a wide range of heights are necessary to provide the inputs needed to understand processes which affect weather and climate, both near the surface and 100s of km above the surface.The proposed research program has several significant benefits for Canadians. A better understanding of coupling between the lower, middle and upper atmosphere is a key element to improving weather and climate models, as processes that occur in one region of the atmosphere can have a significant effect on other regions separated from the first by height, latitude, longitude and time. The proposed measurements will improve our understanding of the transport of pollutants in the atmosphere. It is now well established that pollution created in one region of the world can be lifted into the stratosphere, where it can both affect ozone and be transported great distances before being mixed back down to the surface. Knowledge gained from these studies will be used to address the quality of weather forecasts, health concerns due to air quality, declining levels of stratospheric ozone, GPS navigation in the North and predicting future climate change.

日地关系是研究太阳光和粒子能量如何进入地球的大气层-电离层-磁层系统并在其中分布。电离层是高层大气（地球表面上方80至500公里）的带电区域，而磁层是太阳磁场与地球磁场相互作用产生的地球周围空间的延伸区域。大气部分传统上强调太阳能与低层大气的相互作用。在过去的20年里，人们已经认识到，低层大气与高层大气和电离层的耦合对于理解该系统至关重要。因此，同时测量范围广泛的高度是必要的，以提供所需的投入，以了解影响天气和气候的过程，无论是近地面和100公里以上的表面。拟议的研究计划有几个显着的好处加拿大人。更好地了解低层、中层和高层大气之间的耦合是改进天气和气候模型的一个关键因素，因为在大气的一个区域发生的过程可能对与第一个区域相隔高度、纬度、经度和时间的其他区域产生重大影响。建议的测量方法将增进我们对污染物在大气中迁移的了解。现在已经确定，在世界某个区域产生的污染可以被提升到平流层，在那里它既可以影响臭氧，又可以被传送到很远的地方，然后再混合回到地面。从这些研究中获得的知识将用于解决天气预报的质量、空气质量引起的健康问题、平流层臭氧水平下降、北方的全球定位系统导航以及预测未来的气候变化。