Quasi-two-day wave modulation of carbon dioxide in the mesosphere and lower thermosphere

被引:6
作者
Yue, Jia [1 ,2 ]
Gan, Quan [3 ]
机构
[1] Catholic Univ Amer, Washington, DC 20064 USA
[2] NASA GSFC, Greenbelt, MD USA
[3] Univ Colorado, LASP, Boulder, CO 80309 USA
关键词
Carbon dioxide; Quasi-two-day wave; Planetary wave; Advection; DOPPLER-SPREAD PARAMETERIZATION; VOLUME MIXING-RATIO; 2-DAY WAVE; MOMENTUM DEPOSITION; MIDDLE ATMOSPHERE; LONG-TERM; CO2; VARIABILITY; OZONE; SPACE;
D O I
10.1016/j.jastp.2021.105750
中图分类号
P3 [地球物理学]; P59 [地球化学];
学科分类号
0708 ; 070902 ;
摘要
In this paper, we report the quasi-two-day wave (QTDW) in daytime only SABER CO2 in January 2003. The QTDW in CO2 of similar to 7 ppmv or 3-4% shows double peak structures at mid and low latitudes of both hemispheres. We compare the SABER measured QTDW disturbance in CO2 and temperature to those in the eCMAM (the extended Canadian Middle Atmosphere Model). Good agreement of QTDW CO2 spatial and temporal variations is seen, especially at southern mid-latitudes. eCMAM outputs are further analyzed to show that the QTDW in CO2 mixing ratio is mainly driven by both vertical transport and meridional advection. Because waves in vertical transport can be derived by temperature disturbance via a so-called adiabatic displacement approach, we can estimate the QTDW in CO2 mixing ratio from the SABER QTDW in temperature assuming meridional advection is weak at low and mid-latitudes.
引用
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页数:8
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