| PRECIPITABLE WATER MEASUREMENTS WITH SUN-PHOTOMETER |
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| 作者姓名： | Han Jiecai Zhou Jun Wang Zhi'en Hu Huanling |
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| 作者单位： | Anhui Institute of Optics and Fine Mechanics Chinese Academy of Sciences.Hefei 230031，Anhui Institute of Optics and Fine Mechanics，Chinese Academy of Sciences.Hefei 230031，Anhui Institute of Optics and Fine Mechanics，Chinese Academy of Sciences.Hefei 230031，Anhui Institute of Optics and Fine Mechanics，Chinese Academy of Sciences.Hefei 230031 |
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| 摘 要： | In this paper a method is described of retrieving precipitable water from sun-photometermeasurements.The quantitative relationship between water vapor transmission and precipitablewater is established by means of LOWTRAN 7 model.Calibration of the water vapor absorptionchannel is made through a modified Langley method.The good agreement between the sun-photometer and radiosonde water vapor retrieval indicates that this method is feasible.The sun-photometer is operated at Hefei to monitor the precipitable water within one yearperiod.Characteristics of both diurnal evolution and within-one-year variation of the precipitablewater and their relation with synoptic system as well as surface dew-point temperature arepresented and analyzed.Errors in the retrieved precipitable water from the sun-photometermeasurements are also calculated and discussed.
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| 收稿时间： | 1995/12/21 0:00:00 |
| 修稿时间： | 1996/6/19 0:00:00 |
PRECIPITABLE WATER MEASUREMENTS WITH SUN-PHOTOMETER |
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| Han Jiecai,Zhou Jun,Wang Zhi''en,Hu Huanling.PRECIPITABLE WATER MEASUREMENTS WITH SUN-PHOTOMETER[J].Acta Meteorologica Sinica,1997,11(1):95-104. |
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| Authors: | Han Jiecai Zhou Jun Wang Zhi'en and Hu Huanling |
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| Institution: | Han Jiecai Zhou Jun Wang Zhi'en Hu Huanling Anhui Institute of Optics and Fine Mechanics,Chinese Academy of Sciences.Hefei 230031 |
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| Abstract: | In this paper a method is described of retrieving precipitable water from sun-photometer measurements.The quantitative relationship between water vapor transmission and precipitable water is established by means of LOWTRAN 7 model.Calibration of the water vapor absorption channel is made through a modified Langley method.The good agreement between the sun- photometer and radiosonde water vapor retrieval indicates that this method is feasible. The sun-photometer is operated at Hefei to monitor the precipitable water within one year period.Characteristics of both diurnal evolution and within-one-year variation of the precipitable water and their relation with synoptic system as well as surface dew-point temperature are presented and analyzed.Errors in the retrieved precipitable water from the sun-photometer measurements are also calculated and discussed. |
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| Keywords: | water vapor precipitable water solar radiometry |
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