ICON/MIGHTI与TIMED/SABER探测温度数据的对比
doi: 10.11728/cjss2024.05.2023-0094 cstr: 32142.14.cjss2024.05.2023-0094
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牟宵 女, 1997年2月出生于四川省成都市, 现为中国科学院国家空间科学中心学生, 主要研究方向为临近空间飞行环境等. E-mail: muxiao0221@163.com -
闫召爱 男, 1981年10月出生于山东省巨野县, 现为中国科学院国家空间科学中心正高级工程师, 博士生导师, 主要研究方向为临近空间大气探测技术与应用研究. E-mail: yanza@nssc.ac.cn
作者简介:
通讯作者:
Comparative between Temperature Data Detected by ICON/MIGHTI and TIMED/SABER
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摘要: ICON卫星为临近空间环境特性研究、建模和预报提供了新数据. 通过对ICON/MIGHTI与TIMED/SABER在90～105 km高度探测温度数据的比较, 计算两者的年平均温度偏差和均方根误差, 同时分析月平均温度偏差在不同月份中随高度和纬度的分布情况, 为MIGHTI和SABER温度探测数据在临近空间大气建模和预报应用提供参考依据. 结果表明, MIGHTI和SABER的温度垂直廓线变化趋势基本吻合, 数值上有所差异. 在12°S－42°N范围内, MIGHTI探测温度与SABER相比, 在90～93 km时偏低, 偏差最大值约2.5 K, 在93～105 km偏高, 偏差的绝对值最大约10 K. 在不同季节, 白天的温度偏差通常高于夜晚. SABER和MIGHTI的月平均温度偏差随季节和纬度的变化显著, 夏季时的月平均温度偏差最大, 且温度的均方根误差最大.
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关键词:
- 大气温度 /
- 临近空间 /
- 数据比较 /
- ICON/MIGHTI /
- TIMED/SABER
Abstract: The ICON satellite provides new data for environmental characterization, modeling, and forecasting in near space. In this paper, the ICON/MIGHTI and TIMED/SABER temperature datasets were compared and analyzed in the range of 90～105 km, and the mean temperature deviation and root-mean-square error of both were calculated. The distribution of monthly mean temperature deviation with altitude and latitude in different months was also analyzed, which is useful for applying the MIGHTI and SABER temperature data in the model and forecast. The results showed that the MIGHTI and SABER vertical profile detections agreed. In the range of 12°S－42°N, the MIGHTI probe temperature is lower than that of SABER in the range of 90～93 km, with a maximum deviation of about 2.5 K, and higher in the range of 93～105 km, with a maximum absolute value of the deviation of about 10 K. The deviation was usually higher during the day than at night. The mean temperature deviation varied significantly with season and latitude and had the largest mean deviation range and the largest root-mean-square temperature error in summer.-
Key words:
- Atmospheric temperature /
- Near space /
- Data comparison /
- ICON/MIGHTI /
- TIMED/SABER
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图 1 ICON/MIGHTI与TIMED/SABER温度匹配数据分布
Figure 1. Distribution of matched data for ICON/MIGHTI and TIMED/SABER temperatures
图 2 MIGHTI与SABER探测温度个例比较结果及温度偏差. MIGHTI (4.46°N, 25.44°W, 16:06 LT), SABER (4.57°N, 26.13°W, 15:42 LT), MIGHTI (39.95°N, 167.13°E, 02:12 LT), SABER (39.74°N, 166.87°E, 02:48 LT)
Figure 2. Comparison of individual profiles of temperatures detected and temperature deviation by ICON/MIGHTI and TIMED/SABER. MIGHTI (4.46°N, 25.44°W, 16:06 LT), SABER (4.57°N, 26.13°W, 15:42 LT), MIGHTI (39.95°N, 167.13°E, 02:12 LT), SABER (39.74°N, 166.87°E, 02:48 LT)
图 3 MIGHTI与SABER探测温度偏差(a)和均方根误差(b)随季节变化的统计结果
Figure 3. Statistical results of deviation (a) and root mean square error (b) of MIGHTI and SABER detection temperatures with seasonal variations
图 4 MIGHTI与SABER探测温度在不同季节的偏差随纬度变化的统计结果
Figure 4. Statistical results of the deviation of MIGHTI and SABER probe temperatures with latitude in different seasons
图 5 MIGHTI与SABER探测温度在不同季节的均方根误差随纬度变化的统计结果
Figure 5. Statistical results on the variation of root mean square error with latitude for MIGHTI and SABER probe temperatures in different seasons
图 6 MIGHTI与SABER温度数据在不同季节的平均温度偏差随高度变化的统计结果
Figure 6. Statistical results of mean temperature deviation with altitude for MIGHTI and SABER temperature data in different seasons
图 7 MIGHTI与SABER温度数据在不同季节的均方根误差随高度变化的统计结果
Figure 7. Statistical results of root mean square error variation with altitude for MIGHTI and SABER temperature data in different seasons
图 8 MIGHTI与SABER匹配数据的温度标准差
Figure 8. Standard deviation of temperature of MIGHTI and SABER
表 1 MIGHTI/ICON和TIMED/SABER温度探测数据匹配情况
Table 1. Numbers of matching data of ICON/MIGHTI and TIMED/SABER
纬度分布 1月 4月 7月 10月 10°S－0° 267 193 214 334 0°－10°N 93 182 41 223 10°N－20°N 64 176 223 166 20°N－30°N 140 231 80 136 30°N－40°N 195 367 231 330 总数 759 1149 789 1075 
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