FY3D/GNOS大气掩星探测温度与TIMED/SABER探测温度和NRLMSISE00 模式温度的比较
doi: 10.11728/cjss2024.03.2023-0072 cstr: 32142.14.cjss2024.03.2023-0072
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刘红珊 女, 1999年5月出生于云南省昆明市, 硕士研究生. 硕士就读于中国科学院大学国家空间科学中心, 专业为空间物理学, 主要研究方向为中高层大气物理与化学. E-mail: hsliu6688@126.com -
高红 女, 1981年11月出生于云南省大理州, 现为中国科学院国家空间科学中心研究员, 博士生导师, 主要研究方向为中高层大气光化学过程和辐射过程, 以及空间天气变化和低层大气扰动的中高层大气效应等. E-mail: hgao@spaceweather.ac.cn
作者简介:
通讯作者:
Comparison of FY3D/GNOS Atmospheric Occultation Detection Temperature with TIMED/ SABER Temperature and NRLMSISE00 Model Temperature
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摘要: 大气温度数据的精确探测对于研究中高层大气的结构特征和动力学过程具有重要意义. 利用2019年1月至2021年12月共3年的FY3D掩星观测数据, 借助TIMED/SABER探测数据和NRLMSISE00大气模式数据, 对12～100 km范围内的大气温度数据进行比较. 统计分析SABER-FY3D温度偏差(TSABER–TFY3D)和NRLMSISE00-FY3D温度偏差(TNRLMSISE00–TFY3D)及其随纬度、季节的分布和南北半球的差异. 结果显示, 三种温度数据随高度变化趋势是大体一致的, SABER-FY3D温度偏差在12～30 km高度范围内为正偏差(0～1.8 K), 随高度升高, 温度偏差从30 km处的0 K增加到77 km处的$ - $11.6 K. NRLMSISE00-FY3D温度偏差在平流层为正偏差(0～4.4 K), 在中间层和低热层为负偏差($ - $2～0 K). 两种温度偏差随纬度和季节都存在明显的变化特征. 60 km以下, SABER-FY3D温度偏差在低纬地区较小($ - $3.8～1.8 K), 高纬地区较大($ - $12～1.6 K), 夏季较小($ - $0.5～2.2 K), 冬季较大($ - $6.2～1 K); NRLMSISE00-FY3D温度偏差正好相反, 在高纬地区较小($ - $1.6～2.4 K), 低纬地区较大($ - $3.9～6.1 K), 冬季较小($ - $2～2.2 K), 夏季较大($ - $1.3～7.1 K). 两类月平均温度偏差的零偏差线所在高度在南北半球均存在春夏季节较高, 秋冬季节较低的特征. 冬季40～60 km高度区域内, 北半球的SABER-FY3D平均温度负偏差比南半球的明显.
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关键词:
- FY3D大气掩星温度 /
- 温度偏差 /
- 季节变化 /
- 纬度变化
Abstract: The accurate detection of atmospheric temperature is of great significance for studying the structural characteristics and dynamic processes of the middle and upper atmosphere. The GNOS (Global Navigation Satellite System Occultation Sounder) mounted on the FY3D has been carrying out atmospheric sounding since 15 November 2017. The purpose of this study is to evaluate the atmospheric temperature data products of the FY3D satellite. This study was conducted to comparatively analyze the atmospheric temperature data within the range of 12～100 km based on FY3D occultation observation data for 3 years from January 2019 to December 2021, with the aid of TIMED/SABER detection data and NRLMSISE00 atmospheric model data. The SABER-FY3D temperature deviation (TSABER–TFY3D) and NRLMSISE00-FY3D temperature deviation (TNRLMSISE00–TFY3D) and their distribution with latitude, season, and the difference between the northern and southern hemispheres were analyzed. The results show that the three sets of temperature data have generally consistent trend with change in height. SABER-FY3D temperature deviation is positive (0～1.8 K) in the altitude range of 12～30 km, and as the altitude increases, the temperature deviation increases from 0 K at 30 km to $ - $11.6 K at 77 km. NRLMSISE00-FY3D temperature deviation is positive (0～4.4 K) in the stratosphere, and negative ($ - $2～0 K) in the mesosphere and low thermosphere. Both temperature deviations show significant variations with latitude and season. Below 60 km, SABER-FY3D temperature deviation is smaller in the low-latitude region ($ - $3.8～1.8 K) and larger in the high-latitude region ($ - $12～1.6 K), smaller in summer ($ - $0.5～2.2 K) and larger in winter ($ - $6.2～1 K); NRLMSISE00-FY3D temperature deviation is just the opposite, smaller in the high-latitude region ($ - $1.6～2.4 K) and larger in the low-latitude ($ - $3.9～6.1 K), smaller in winter ($ - $2～2.2 K),, and larger in summer($ - $1.3～7.1 K). The zero deviation lines of the two types of monthly average temperature deviations show characteristics of being higher in spring and summer and lower autumn and winter in both hemispheres. In the winter, in the altitude region of 40～60 km, the negative deviation of the SABER-FY3D average temperature in the northern hemisphere is more obvious than that in the southern hemisphere. -
图 4 不同纬度区域的SABER-FY3D(a)和NRLMSISE00-FY3D(b)平均温度偏差以及SABER-FY3D(c)和NRLMSISE00-FY3D(d)温度标准偏差
Figure 4. Temperature difference of SABER-FY3D (a) and NRLMSISE00-FY3D (b), standard deviations of difference of SABER-FY3D (c) and NRLMSISE00-FY3D (d) at different latitudes
图 6 不同季节的SABER-FY3D(a)和NRLMSISE00-FY3D(b)平均温度偏差以及SABER-FY3D(c)和NRLMSISE00-FY3D(d)温度标准偏差
Figure 6. Temperature difference of SABER-FY3D (a) and NRLMSISE00-FY3D (b), standard deviations of SABER-FY3D (c) and NRLMSISE00-FY3D (d) at different seasons
图 5 SABER-FY3D(a)和NRLMSISE00-FY3D(b)平均温度偏差和SABER-FY3D(c)和NRLMSISE00-FY3D(d)标准偏差随纬度和高度的变化
Figure 5. Mean temperature deviation of SABER-FY3D (a) and NRLMSISE00-FY3D (b), standard deviations of SABER-FY3D (c) and NRLMSISE00-FY3D (d) with latitude and altitude
图 1 FY3D/GNOS与TIMED/SABER卫星在2019年1月1日至2021年12月31日期间匹配数据的全球分布
Figure 1. Global distribution of matching data between FY3D/GNOS and TIMED/SABER satellites from 1 January 2019 to 31 December 2021
图 2 2019年1月2日19:27 UT在(24.35°S, 92.94°E)附近匹配上的FY3D/GNOS, TIMED/SABER和NRLMSISE00温度廓线以及温度偏差廓线
Figure 2. Matched FY3D/GNOS, TIMED/SABER, and NRLMSISE00 temperature profiles and temperature difference profiles around (24.35°S, 92.94°E) at 19:27 UT on 2 Jan. 2019
图 3 FY3D, SABER, 和NRLMSISE00的全球平均温度、平均温度偏差、标准偏差和相对偏差
Figure 3. Mean temperature, average temperature difference, standard deviation, and relative deviation of SABER, NRLMSISE00 and FY3D
图 7 北半球SABER-FY3D(a)和NRLMSISE00-FY3D(b)月平均温度偏差以及南半球SABER-FY3D(c)和NRLMSISE00-FY3D(d)月平均温度偏差随月份和高度变化
Figure 7. Monthly mean temperature difference in the northern hemisphere of SABER-FY3D (a) and NRLMSISE00-FY3D (b) with month and altitude. Monthly mean temperature difference in the southern hemisphere of SABER-FY3D (c) and NRLMSISE00-FY3D (d) with month and altitude
表 1 纬度和季节划分标准
Table 1. Latitude and seasonal criteria
分类 北半球 南半球 纬度 低纬 0°－30°N 30°S－0° 中纬 30°－60°N 60°－30°S 高纬 60°－90°N 90°－60°S 季节 春季 3－5月 9－11月 夏季 6－8月 12－2月 秋季 9－11月 3－5月 冬季 12－2月 6－8月 
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表 2 FY3D/GNOS与TIMED/SABER匹配数据分布情况
Table 2. Distribution of FY3D/GNOS and TIMED/SABER matching data
分类 匹配数目 纬度 低纬 839 中纬 1194 高纬 302 季节 春季 470 夏季 688 秋季 643 冬季 534 年份 2019年 737 2020年 779 2021年 819 总共 2335
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