| MWP967KV型地基微波辐射计反演产品的质量评估 |
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| 引用本文： | 郑飒飒.MWP967KV型地基微波辐射计反演产品的质量评估[J].高原山地气象研究,2019,39(2):82-86. |
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| 作者姓名： | 郑飒飒 |
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| 作者单位： | 1. 四川省人工影响天气办公室, 成都 610072; |
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| 基金项目： | 四川省人工影响天气科学技术研究与应用项目(2019RYB001) |
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| 摘 要： | 利用MWP967KV型地基微波辐射计和L波段探空资料,采用了平均误差、相关分析、回归分析等统计方法,评估了微波辐射计和L波段探空在降水和无降水时温度、相对湿度、水汽密度的差异,了解地基微波辐射计的性能。研究结果表明:(1)微波辐射计和探空探测温度、相对湿度和水汽密度为显著性的线性相关,两者相对湿度相关性不如温度和水汽密度高,且离散度较大。(2)无降水时,相对湿度和水汽密度平均误差小,有降水时,温度和相对湿度的均方根误差大;在低层时,无降水时温度平均误差小,水汽密度的均方根误差大,中高层时,有降水时温度平均误差小,水汽密度均方根误差大。(3)温度和水汽密度为显著性正相关;相对湿度在有降水时表现为0~2km的显著性正相关和9.25~10km的显著性负相关,无降水时表现为0~8km的显著性正相关。总体来看,微波辐射计能弥补探空时空不足的问题,相对湿度的可信度需要进一步提高,降水对微波辐射计影响较大。
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| 关 键 词： | 地基微波辐射计 L波段探空 相关性 平均误差 均方根误差 |
| 收稿时间： | 2019-03-04 |
Quality Assessment on Inverted Products of MWP967KV Ground-based Microwave Radiometer |
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| Affiliation: | 1. Weather Modification Office of Sichuan Province, Chengdu 610072, China;2. Heavy Rain and Drought-Flood Disasters in Plateau and Basin Key Laboratory of Sichuan Province, Chengdu 610072, China |
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| Abstract: | Based on the data of MWP967KV type Ground-Based Microwave Radiometer and L-band sounding,we use statistical methods like mean deviation,correlation analysis and regression analysis to evaluate the differences between Microwave Radiometer and L-band sounding in precipitation and no precipitation conditions,so as to understand the performance of Ground-Based Microwave Radiometer.The research reveals that:(1) an obvious linear correlation exists between the temperature,relative humidity and water-vapor density detected by Ground-Based Microwave Radiometer and sounding;comparatively,the character of relative humidity is dispersion;(2) in condition of non-hydrometeor,the average error of relative humidity and water-vapor density is small;in condition of hydrometeor the root-mean-square error of temperature and relative humidity is large;in lower atmosphere and condition of non-hydrometeor,the average error of temperature is small,the root-mean-square error of water-vapor density is large;in middle and higher atmosphere and condition of hydrometeor,the average error of temperature is small,the root-mean-square error of water-vapor density is large;(3) the temperature and water-vapor density show an obvious positive correlation;in condition of hydrometeor the relative humidity shows an obvious positive correlation of 0-2km and an obvious negative correlation of 9.25-10km;in condition of non-hydrometeor it shows an obvious positive correlation of 0-8km.Generally speaking,Ground-Based Microwave Radiometer makes up for the shortage of sounding,the reliability of relative humidity needs to be further improved,and precipitation has a greater impact on Ground-Based Microwave Radiometer. |
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