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Terahertz and Far-Infrared Windows Opened at Dome A, Antarctica
Sheng-Cai Shi; Scott Paine; Qi-Jun Yao; Zhen-Hui Lin; Xin-Xing Li; Wen-Ying Duan; Hiroshi Matsuo; Qizhou Zhang; Ji Yang; M. C. B. Ashley; Zhaohui Shang; Zhong-Wen Hu
2016
发表期刊nature astronomy
卷号1期号:1页码:1-7
摘要The terahertz and far-infrared (FIR) band, from approximately 0.3 THz to 15 THz (1 mm to 20 micron), is important for astrophysics as the thermal radiation of much of the universe peaks at these wavelengths and many spectral lines that trace the cycle of interstellar matter also lie within this band. However, water vapor renders the terrestrial atmosphere opaque to this frequency band over nearly all of the Earth's surface. Early radiometric measurements below 1 THz at Dome A, the highest point of the cold and dry Antarctic ice sheet, suggest that it may offer the best possible access for ground-based astronomical observations in the terahertz and FIR band. To address uncertainty in radiative transfer modelling, we carried out measurements of atmospheric radiation from Dome A spanning the entire water vapor pure rotation band from 20 micron to 350 micron wavelength by a Fourier transform spectrometer. Our measurements expose atmospheric windows having significant transmission throughout this band. Furthermore, by combining our broadband spectra with auxiliary data on the atmospheric state over Dome A, we set new constraints on the spectral absorption of water vapor at upper tropospheric temperatures important for accurately modeling the terrestrial climate. In particular, we find that current spectral models significantly underestimate the H2O continuum absorption.Shi, Sheng-Cai; Paine, Scott; Yao, Qi-Jun; Lin, Zhen-Hui; Li, Xin-Xing; Duan, Wen-Ying; Matsuo, Hiroshi; Zhang, Qizhou; Yang, Ji; Ashley, M C B; Shang, Zhaohui; Hu, Zhong-Wen
文献类型期刊论文
条目标识符http://libir.pmo.ac.cn/handle/332002/16841
专题毫米波和亚毫米波技术实验室
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GB/T 7714
Sheng-Cai Shi,Scott Paine,Qi-Jun Yao,et al. Terahertz and Far-Infrared Windows Opened at Dome A, Antarctica[J]. nature astronomy,2016,1(1):1-7.
APA Sheng-Cai Shi.,Scott Paine.,Qi-Jun Yao.,Zhen-Hui Lin.,Xin-Xing Li.,...&Zhong-Wen Hu.(2016).Terahertz and Far-Infrared Windows Opened at Dome A, Antarctica.nature astronomy,1(1),1-7.
MLA Sheng-Cai Shi,et al."Terahertz and Far-Infrared Windows Opened at Dome A, Antarctica".nature astronomy 1.1(2016):1-7.
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