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| RETRIEVING ATMOSPHERIC SOUNDING PROFILES AROUND TYPHOON YUNNA USING INFRARED HYPERSPECTRAL MEASUREMENTS AIRS | |
| 作者姓名： | 黄 兵 刘建文 白 杰 李耀东 高守亭 |
| 作者单位： | HUANG Bing(School of Physics, Peking University, Beijing 100006 China;Aviation Institute of Air Force, Beijing 100085 China);LIU Jian-wen,BAI Jie(Aviation Institute of Air Force, Beijing 100085 China);LI Yao-dong(Aviation Institute of Air Force, Beijing 100085 China;Institute of Atmospheric Sciences, Chinese Academy of Sciences, Beijing 100029 China);GAO Shou-ting(Institute of Atmospheric Sciences, Chinese Academy of Sciences, Beijing 100029 China) |
| 基金项目： | project of the Ministry of Sciences and Technology of the People's Republic of China，projects of National Natural Science Foundation of China (，project of State Key Laboratory of Severe Weather |
| 摘 要： | In this study,we derived atmospheric profiles of temperature,moisture,and ozone,along with surface emissivity,skin temperature,and surface pressure,from infrared-sounder radiances under clear sky (cloudless) condition.Clouds were detected objectively using the Atmospheric Infrared Sounder under a relatively low spatial resolution and cloud-mask information from the Moderate Resolution Imaging Spectroradiometer under a high horizontal resolution;this detection was conducted using space matching.Newton’s nonlinear physical iterative solution technique is applied to the radiative transfer equation (RTE) to retrieve temperature profiles,relative humidity profiles,and surface variables simultaneously.This technique is carried out by using the results of an eigenvector regression retrieval as the background profile and using corresponding iterative forms for the weighting functions of temperature and water-vapor mixing ratio.The iterative forms are obtained by applying the variational principle to the RTE.We also compared the retrievals obtained with different types of observations.The results show that the retrieved atmospheric sounding profile has great superiority over other observations by accuracy and resolution.Retrieved profiles can be used to improve the initial conditions of numerical models and used in areas where conventional observations are sparse,such as plateaus,deserts,and seas. |
RETRIEVING ATMOSPHERIC SOUNDING PROFILES AROUND TYPHOON YUNNA USING INFRARED HYPERSPECTRAL MEASUREMENTS AIRS |
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| HUANG Bing,LIU Jian-wen,BAI Jie,LI Yao-dong and GAO Shou-ting.RETRIEVING ATMOSPHERIC SOUNDING PROFILES AROUND TYPHOON YUNNA USING INFRARED HYPERSPECTRAL MEASUREMENTS AIRS[J].Journal of Tropical Meteorology,2010,16(3):201-209. | |
| Authors: | HUANG Bing LIU Jian-wen BAI Jie LI Yao-dong and GAO Shou-ting |
| Institution: | 1. School of Physics, Peking University, Beijing 100006 China;Aviation Institute of Air Force, Beijing 100085 China 2. Aviation Institute of Air Force, Beijing 100085 China 3. Aviation Institute of Air Force, Beijing 100085 China;Institute of Atmospheric Sciences, Chinese Academy of Sciences, Beijing 100029 China 4. Institute of Atmospheric Sciences, Chinese Academy of Sciences, Beijing 100029 China |
| Abstract: | In this study, we derived atmospheric profiles of temperature, moisture, and ozone, along with surface emissivity, skin temperature, and surface pressure, from infrared-sounder radiances under clear sky (cloudless) condition. Clouds were detected objectively using the Atmospheric Infrared Sounder under a relatively low spatial resolution and cloud-mask information from the Moderate Resolution Imaging Spectroradiometer under a high horizontal resolution; this detection was conducted using space matching.Newton's nonlinear physical iterative solution technique is applied to the radiative transfer equation (RTE) to retrieve temperature profiles, relative humidity profiles, and surface variables simultaneously. This technique is carried out by using the results of an eigenvector regression retrieval as the background profile and using corresponding iterative forms for the weighting functions of temperature and water-vapor mixing ratio. The iterative forms are obtained by applying the variational principle to the RTE. We also compared the retrievals obtained with different types of observations. The results show that the retrieved atmospheric sounding profile has great superiority over other observations by accuracy and resolution. Retrieved profiles can be used to improve the initial conditions of numerical models and used in areas where conventional observations are sparse, such as plateaus, deserts, and seas. |
| Keywords: | infrared remote sensing retrieval atmospheric sounding profile MODIS AIRS |
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