THE VICARIOUS CALIBRATION FOR WATER VAPOR CHANNEL OF SPIN STABILIZATION GEOSTATIONARY METEOROLOGICAL SATELLITE

Wang Ping; Qiu Kangmu

Vol.11, NO.1, 2000

Article Contents

Article Navigation > Journal of Applied Meteorological Science > 2000 > 11(1): 80-87

Wang Ping, Qiu Kangmu. The vicarious calibration for water vapor channel of spin stabilization geostationary meteorological satellite. J Appl Meteor Sci, 2000, 11(1): 80-87.

Citation:

Wang Ping, Qiu Kangmu. The vicarious calibration for water vapor channel of spin stabilization geostationary meteorological satellite. J Appl Meteor Sci, 2000, 11(1): 80-87.

Wang Ping, Qiu Kangmu. The vicarious calibration for water vapor channel of spin stabilization geostationary meteorological satellite. J Appl Meteor Sci, 2000, 11(1): 80-87.

Citation:

Wang Ping, Qiu Kangmu. The vicarious calibration for water vapor channel of spin stabilization geostationary meteorological satellite. J Appl Meteor Sci, 2000, 11(1): 80-87.

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THE VICARIOUS CALIBRATION FOR WATER VAPOR CHANNEL OF SPIN STABILIZATION GEOSTATIONARY METEOROLOGICAL SATELLITE

National Satellite Meteorological Center, Beijing 100081

Received Date: 1998-08-24
Rev Recd Date: 1999-01-25
Publish Date: 2000-02-29

Abstract

Abstract

By using the radio sonde data and Lowtran 7, the radiance is calculated, and the calibration coefficients of FY-2 and GMS-5 water vapor channels are fitted. During the period of around equinox eclipse, the temperature on satellite would change rapidly, and the vicarious calibration combining with in-flight calibration would be considered. The validations are made using radiosonde data and GMS-5 observational values. The vicarious calibration has got a good result in the operations for half a year.
- Water vapor channel;
- Vicarious calibration;
- Radiosonde data;
- Radiative transfer

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References(12)

Figures and Tables

图 1 GMS-5 (虚线) 和FY-2 (实线) 水汽通道权重函数

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图 2 GMS-5 1997年12月用探空资料对定标曲线的检验结果

(白色表示用原定标系数换算的亮温与探空资料算出亮温的温差频数, 黑色表示新定标系数的结果)

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图 3 1997年12月外定标系数检验

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图 4 1998年1月5日23:00 FY-2与GMS-5水汽通道亮温温差

(样本数29)

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图 5 1997年12月17日23:00 FY-2与GMS-5水汽通道亮温温差

(样本数31)

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图 6 考虑星蚀影响的FY-2水汽通道外定标曲线

12月2～4日资料, 斜率0.95899221, 截距1.858632×10^-7, 样本数75)

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图 7 考虑星蚀影响的FY-2水汽通道外定标曲线

2月17～24日资料, 斜率: 0.95230451, 截距: 2.3483321×10^-7, 样本数: 183)

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表 1 GMS-5水汽通道定标系数

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