Millimeter Spectroscopic Studies of the Mesosphere and Lower Thermosphere

这项提议是为了利用基特峰国家射电天文台(NRAO)现有的天文接收器，继续实施地面毫米波光谱测量地球中间层和低热层(MLT)中的微量气体的计划。对中间层水同位素比率的毫米观测提供了独特的诊断方法，以调查中间层上方和下方含氢物质的垂直输送可能对中间层水的垂直剖面以及D/H比产生的影响。毫米级观测支持SNOE和定时航天器观测。

This proposal is for a continuing program of ground-based millimeter wave spectroscopic measurements of trace gases in the earth's mesosphere and lower thermosphere (MLT), using existing astronomical receivers at Kitt Peak National Radio Astronomy Observatory (NRAO). The millimeter observations of mesospheric water isotope ratios provide unique diagnostics to investigate the signatures vertical transport of hydrogen-bearing species from above and below the mesosphere may force in the vertical profiles, as well as D/H ratios, of mesospheric water. The millimeter observations support SNOE and TIMED spacecraft observations.