Investigation of the mesopheric OH-Layer via FT spectroscopy and mesospheric models, OHTEMP II

中间层作为连接空间和大气层的纽带，对大气研究提出了许多悬而未决的问题。它的动力学和化学性质通过极地冬季的向下输送影响极地帽上方的平流层。在拟议的工作中，将研究斯匹次卑尔根岛（北纬79度）上空的中间层OH层。FTS的高光谱分辨率测量和激光雷达的高空分辨率测量将结合起来更新和验证去激励模型。该模型被嵌入一个中层二维模型，该模型将得到增强，并将用于模拟中层顶区域的OH层，这是臭氧催化破坏链的一部分。将研究对中间层动力学和化学的影响。FT光谱仪的带宽和分辨率上级其他用于测量OH发射的光谱仪。激光雷达提供了一个非常好的高度分辨率的OH分布。这两个测量和模式的结合将提供新的见解中层顶区域，特别是其动力学以上的北极地区。

The mesosphere as the link between space and atmosphere poses still many open questions to atmospheric research. Its dynamics and chemistry influence the stratosphere above the polar caps via down transport in the polar winter. In the proposed work the mesospheric OH layer above Spitsbergen (79◦N) will be studied. High spectral resolution measurements by FTS and high altitude resolution measurements by LIDAR will be combined to update and validate a deexcitation model. This is embedded into a mesospheric 2-D-model which will be enhanced and will be used to model the OH layer in the mesopause region, which is part of catalytic destruction chain for ozone. The consequences for mesospheric dynamics and chemistry will be investigated. The bandwidth and the resolution of the FT spectrometer is superior to other spectrometers used to measure OH emissions. The LIDAR provides a very good altitude resolution of the OH distribution. The combination of both measurements and the model will provide new insight into the mesopause region, especially its dynamics above the arctic region.