Far-IR measurements at Cerro Toco, Chile: FIRST, REFIR, and AERI
Far-IR measurements at Cerro Toco, Chile: FIRST, REFIR, and AERI
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智利 Cerro Toco 的远红外测量：FIRST、REFIR 和 AERI
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
M. Mlynczak
中科院分区：
文献类型：
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作者：
R. Cageao;J. A. Alford;David G. Johnson;D. Kratz;M. Mlynczak
在2009年中期，在智利的Cerro Toco进行了第二次未开发波段辐射加热活动（RHUBC-II），这是一个位于智利北部北方阿塔卡马沙漠5.4公里处的高、干燥、偏远的山地高原，南纬23°，西经67.8°。从这个网站上，主要的红外水汽吸收带和连续，饱和时，从表面上看，在较低的高度，或在不太干燥的地方，进行了详细的研究，阐明红外（IR）吸收和发射在大气中。现场有三台傅里叶变换红外光谱仪，即对流层远红外光谱仪、远红外辐射探测仪和大气发射辐射干涉仪。在并排比较中，这些测量的大气下沉辐射，重叠光谱覆盖范围从5到100μm（2000到100 cm-1），仪器光谱分辨率从0.5到0.643 cm-1，未切趾。除了傅里叶变换红外光谱仪和其他地基红外和微波仪器外，每天数次从该地点发射压力/温度/相对湿度测量探测器，用于测量18公里以内的大气剖面。推导出的水汽分布，确定在匹配的FTIR测量时间的时间，被用来模拟大气辐射传输。仪器数据的比较，都在相同的光谱分辨率，和模型计算，提出了沿着与技术，用于确定调整线的计算连续模型。这是该运动的一个主要目标。
In mid-2009, the Radiative Heating in the Underexplored Bands Campaign II (RHUBC-II) was conducted from Cerro Toco, Chile, a high, dry, remote mountain plateau, 23°S , 67.8°W at 5.4km, in the Atacama Desert of Northern Chile. From this site, dominant IR water vapor absorption bands and continuum, saturated when viewed from the surface at lower altitudes, or in less dry locales, were investigated in detail, elucidating infrared (IR) absorption and emission in the atmosphere. Three Fourier Transform InfraRed (FTIR) instruments were at the site, the Far-Infrared Spectroscopy of the Troposphere (FIRST), the Radiation Explorer in the Far Infrared (REFIR), and the Atmospheric Emitted Radiance Interferometer (AERI). In a side-by-side comparison, these measured atmospheric downwelling radiation, with overlapping spectral coverage from 5 to 100μm (2000 to 100cm-1), and instrument spectral resolutions from 0.5 to 0.643cm-1, unapodized. In addition to the FTIR and other ground-based IR and microwave instrumentation, pressure/temperature/relative humidity measuring sondes, for atmospheric profiles to 18km, were launched from the site several times a day. The derived water vapor profiles, determined at times matching the FTIR measurement times, were used to model atmospheric radiative transfer. Comparison of instrument data, all at the same spectral resolution, and model calculations, are presented along with a technique for determining adjustments to line-by-line calculation continuum models. This was a major objective of the campaign.