| GPS/MET水汽反演中T_m模型的本地化研究 |
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| 引用本文： | 单九生,邹海波,刘熙明,吴琼.GPS/MET水汽反演中T_m模型的本地化研究[J].气象与减灾研究,2012,35(1):42-46. |
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| 作者姓名： | 单九生 邹海波 刘熙明 吴琼 |
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| 作者单位： | 江西省气象科学研究所,江西南昌,330046 |
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| 基金项目： | 公益性行业(气象)科研专项，江西省科技厅项目，江西省气象局重点项目 |
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| 摘 要： | 利用江西省南昌和赣州两探空站12年(1999—2010年)每日2次(08时和20时)的探空资料,运用最小二乘法建立了江西地区的加权平均温度Tm模型(江西本地化Tm模型)。基于探空资料计算得到的Tm值,对比分析了江西本地化Tm模型、武汉本地化Tm模型和GAMIT默认Tm模型的模拟结果,发现江西本地化Tm模型的模拟效果最好,武汉本地化Tm模型相对较差。利用GAMIT软件,分别采用江西本地化Tm模型、武汉本地化Tm模型和GAMIT默认Tm模型,对2010年1月至2010年12月南昌、赣州等地的GPS大气可降水量进行了解算,并与探空计算的大气可降水量作了对比分析,结果发现采用江西本地化Tm模型后解算得到的GPS大气可降水量精度最高,而采用GAMIT默认Tm模型的精度相对较差。
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| 关 键 词： | GPS水汽 GAMIT 加权平均温度 天顶湿延迟 PW |
LOCALIZATION STUDIES OF Tm MODEL IN DERIVATING THE GPS/MET PRECIPITABLE WATER OVER JIANGXI |
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| Shan Jiusheng
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Zou Haibo
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Liu Ximing
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Wu Qiong.LOCALIZATION STUDIES OF Tm MODEL IN DERIVATING THE GPS/MET PRECIPITABLE WATER OVER JIANGXI[J].Meteorology and Disaster Reduction Research,2012,35(1):42-46. |
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| Authors: | Shan Jiusheng Zou Haibo Liu Ximing Wu Qiong |
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| Institution: | Meteorological Sciences Institute of Jiangxi Province,Nanchang 330046,China |
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| Abstract: | With Nanchang and Ganzhou sounding data,the new model of weighted mean temperature(Tm) for Jiangxi was established.Compared Tm calculated by sounding data with those simulated by the new model,Wuhan model,and GAMIT model respectively,it was found that the new Tm model presented the best performance in Jiangxi,and the Wuhan model had relatively poor performance.Based on the GAMIT software,these three models were used respectively to calculate the GPS practicability waters(PW) of Nanchang and Ganzhou in 2010.Compared with PW calculated by sounding data,the new Tm model had relatively high accuracy while GAMIT model had relatively low accuracy. |
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| Keywords: | GPS PW GAMIT Weighted mean temperature Zenith wet delay Precipitable water(PW) |
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