Water vapor sounding with the far infrared REFIR-PAD spectroradiometer from a high-altitude ground-based station during the ECOWAR campaign
Water vapor sounding with the far infrared REFIR-PAD spectroradiometer from a high-altitude ground-based station during the ECOWAR campaign
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ECOWAR 活动期间，使用高空地面站的远红外 REFIR-PAD 分光辐射计探测水蒸气
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发表时间：
2011
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通讯作者：
T. Iorio
中科院分区：
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作者：
G. Bianchini;L. Palchetti;G. Muscari;I. Fiorucci;P. Girolamo;T. Iorio
[1]2007年3月，在地球水蒸气辐射冷却测量活动期间，在意大利阿尔卑斯山的特斯塔·格里吉亚站使用了远红外应用和开发原型(REFIR-PAD)光谱辐射计，在晴朗的天空条件下和在有卷云的情况下，获得了100-1100厘米−1范围内的下流辐射光谱。对这些测量结果的分析证明，该仪器能够利用水的远红外转动带测定可降水量，总不确定度为5-7%。测量不受CIRI的存在的影响，其光学厚度可以作为附加参数来取而代之。关于水汽体积、混合率和温度的垂直分布的信息也可以在三个高度水平上被反演出。REFIR-PAD能够用简单的非制冷仪器测量水蒸汽柱，能够连续工作，时间分辨率约为10分钟，这使其成为表征水蒸气分布的非常有价值的气象和气候学研究仪器。
[1] The Radiation Explorer in the Far InfraRed-Prototype for Applications and Development (REFIR-PAD) spectroradiometer was operated from the Testa Grigia Italian-Alps station in March 2007 during the Earth Cooling by Water Vapour Radiation (ECOWAR) measurement campaign, obtaining downwelling radiance spectra in the 100–1100 cm−1 range, under clear-sky conditions and in the presence of cirrus clouds. The analysis of these measurements has proven that the instrument is capable of determining precipitable water vapor with a total uncertainty of 5–7% by using the far-infrared rotational band of water. The measurement is unaffected by the presence of cirri, whose optical depth can be instead retrieved as an additional parameter. Information on the vertical profiles of water vapor volume mixing ratio and temperature can also be retrieved for three altitude levels. The ability to measure the water vapor column with a simple, uncooled instrument, capable of operating continuously and with a time resolution of about 10 min, makes REFIR-PAD a very valuable instrument for meteorological and climatological studies for the characterization of the water vapor distribution.