Observation of the Climate Data for the Boundary Layer of the Astronomical Seeing

Pan Naixian; Hao Xiangliang; Duan Yuanxing

Publications of the Yunnan Observatory > 1996 > 0(S1): 112-116.

Pan Naixian, Hao Xiangliang, Duan Yuanxing. Observation of the Climate Data for the Boundary Layer of the Astronomical Seeing[J]. Publications of the Yunnan Observatory, 1996, (S1): 112-116.

Citation:

Pan Naixian, Hao Xiangliang, Duan Yuanxing. Observation of the Climate Data for the Boundary Layer of the Astronomical Seeing[J]. Publications of the Yunnan Observatory, 1996, (S1): 112-116.

Citation:

Pan Naixian, Hao Xiangliang, Duan Yuanxing. Observation of the Climate Data for the Boundary Layer of the Astronomical Seeing[J]. Publications of the Yunnan Observatory, 1996, (S1): 112-116.

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Observation of the Climate Data for the Boundary Layer of the Astronomical Seeing

1.
Peking University, Beijing 100871
2.
Beijing Astronomical Observatory, The Chinese Academy of Sciences, Beijing 100080

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Published Date: October 30, 1996

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Abstract

Abstract

The regular Pattern Of the C_T² is analysed in this Paper according to the primary Observations at the Xinglong Station, Beijing Astronomical Observatory during Oct.-Dec.1994. It is shown that the variation range of the instantaneous C_T² in the surface layer is very large which can reach over one ceder of magnitude within several seconds and tWo Older Of magnitude within several minutes. It is frequntly found that the average C_T² variations in 3 minutes at clear nights are over two older of magnitude. The variation range of the integrated C_T² in the boundary layer is rather small, however it can nab one older Of magnitude at all night. At the qUiescent wind condition the temperature inversion at the summit is developed rapidly, and the integrated also C_T² rapidly becomes large that is harmful for the star image quality. The climate data for the boundary layer of the astronomical seeing can be obtained with the monitoring the wind condition, determination of C_T² or r₀ by using the sound radar and the humidity measuremout.
- Astronomical seeing,
- Sound radar

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