| The Study of In-Orbit Calibration Accuracy of NOAA Satellite Infrared Sounder and Its Effect on Temperature Profile Retrievals |
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| 作者姓名： | 董超华 刘全华 黎光清 张凤英 |
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| 作者单位： | Satellite Meteorological Center，State Meteorological Administration，Beijing 100081，Satellite Meteorological Center，State Meteorological Administration，Beijing 100081，Satellite Meteorological Center，State Meteorological Administration，Beijing 100081，Satellite Meteorological Center，State Meteorological Administration，Beijing 100081 |
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| 摘 要： | The calibration accuracy of High Resolution Infrared Radiation Sounder Mod. 2 (HIRS / 2) on NOAA-10 satellite is analyzed in this paper. The non-linear effect in the linear calibration curve induces a deviation of 1.5 degrees (k) of brightness temperature in the tenth channel (8.3 um, water vapor absorption) of the HIRS/2 and the non-linear effect affects the other channels to a different extent. Based on analyzing non- linearity in two-point calibration curve, a tri-point calibration equation is given. A numerical test of effects of the linear and non-linear calibration models on the accuracy of atmospheric temperature retrievals is carried out.
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