Collaborative Research: CEDAR--Optical Aeronomical Observations at Millstone Hill

合作研究：CEDAR——磨石山光学航空观测

• 批准号: 0640560
• 负责人: John Noto
• 金额: $ 36.04万
• 依托单位: Scientific Solutions Incorporated
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-08-01 至 2012-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0640560&HistoricalAwards=false
• 关键词: Collaborative; Research; CEDAR; Optical; Aeronomical

The investigators will upgrade and rebuild optical instruments at the Millstone Hill Observatory in Massachusetts. The instruments include a new patrol Fabry-Perot interferometer (FPI), an all-sky Doppler imager (ASDI), and a spectrometer. The observations will be used to systematically address a number of issues in mesospheric and thermospheric physics. Research will include the study of mid-latitude mesosphere and lower thermosphere (MLT) tides using the combined FPI mesospheric and thermospheric Doppler winds and all-sky images from hydroxyl and oxygen emissions and incoherent scatter radar observations. The semidiurnal tide usually has a large vertical wavelength so the combined observations will provide a large vertical altitude coverage during both the day and night, and will allow for a better characterization of the vertical tidal structure. Also, the all-sky imager at Millstone Hill will record the hydroxyl, sodium, and oxygen nightglow emissions for gravity wave activity and the investigators will use the FPI neutral winds from the same emissions to calculate the intrinsic gravity wave parameters. From the intrinsic parameters, they will deduce the propagation modes of the waves and several important wave parameters including quantitative measurements of vertical scale-sizes, estimates of the vertical fluxes of horizontal wave momentum and energy, and the amount of wave flux divergence between the airglow layers, the hydroxyl and oxygen layers, in particular. The FPI neutral wind and temperature measurements will be used to study the long-term trends in the mesosphere and thermosphere in connection with the solar cycles, and small-scale thermosphere temperature and neutral wind variations will be studied using the all sky Doppler imager. The regional cluster of optical instruments in conjunction with the Millstone Hill Incoherent Scatter radar will provide comprehensive coverage from the mesosphere to the thermosphere. They will provide a unique data set for studies of MLT dynamics and ionosphere/thermosphere interaction in the sub-auroral region. Multi-institute participation will foster more collaboration between different research groups. The Millstone Hill optical instruments will also be the test bed for the future distributed instrument projects.

调查人员将在马萨诸塞州的米尔斯通山天文台升级和重建光学仪器。 这些仪器包括新的巡逻Fabry-Perot干涉仪（FPI），一个全套的多普勒成像仪（ASDI）和光谱仪。 该观察结果将用于系统地解决中层和热层物理学中的许多问题。 研究将包括使用FPI中层和热层多普勒风以及来自羟基和氧气排放和不连贯的散射辐射观测的全层层次多普勒风以及全天的图像的研究中纬度中层和下热层潮汐（MLT）潮汐。 半腐烂的潮汐通常具有较大的垂直波长，因此合并的观测值将在白天和黑夜提供较大的垂直高度覆盖范围，并可以更好地表征垂直潮汐结构。 此外，Millstone Hill的全天空成像仪将记录重力波活性的羟基，钠和氧气噩梦排放，研究人员将使用来自相同排放的FPI中性风来计算内在的重力波参数。 从内在参数中，它们将推断波浪的传播模式和几个重要的波浪参数，包括垂直尺寸尺寸的定量测量，水平波动量和能量垂直通量的估计以及气泡差量的垂直磁通量，气流层之间的波倒数差异，气流层，氢氧基和氧化物层。 FPI中性风和温度测量值将用于研究与太阳能循环有关的中层和热层的长期趋势，并将使用所有Sky Doppler Imager研究小规模的热层温度和中性风变化。 光学仪器的区域簇与磨石山不一致的散点雷达将提供从中层到热层的全面覆盖。 他们将提供一个独特的数据集，用于研究MLT动力学和电离层/热层相互作用。 多个研究小组之间的参与将促进更多的合作。 Millstone Hill光学仪器也将是未来分布式仪器项目的​​测试床。