空间科学学报2024，Vol.44Issue(3)：474-487,14.DOI:10.11728/cjss2024.03.2023-0072
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
Comparison of FY3D/GNOS Atmospheric Occultation Detection Temperature with TIMED/SABER Occultation Temperature and NRLMSISE00 Model Temperature
摘要
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(Glob-al Navigation Satellite System Occultation Sounder)mounted on the FY3D has been carrying out atmo-spheric sounding since 15 November 2017.The purpose of this study is to evaluate the atmospheric tem-perature data products of the FY3D satellite.This study was conducted to comparatively analyze the at-mospheric temperature data within the range of 12～100 km based on FY3D occultation observation da-ta 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 varia-tions 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 sum-mer 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.关键词
FY3D大气掩星温度/温度偏差/季节变化/纬度变化Key words
FY3D atmospheric occultation temperature/Temperature deviation/Seasonal variation/Latitude variation分类
天文与地球科学引用本文复制引用
刘红珊,徐寄遥,白伟华,何杰颖,孙龙昌,朱亚军,袁韦,高红..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[J].空间科学学报,2024,44(3):474-487,14.基金项目
中国科学院青年交叉团队项目(JCTD-2021-10),国家自然科学基金项目(41774160,41831073),中国科学院国家空间科学中心"攀登计划"项目,云南省汪景琇院士工作站(202005AF150025),中国科学院青年创新促进会项目(2020156)和中高层大气和电离层中-俄联合研究项目共同资助 （JCTD-2021-10）
