LI Xiaoying, CHEN Liangfu, GUO Aiyan, et al. Sub-millimeter wave limb sounding simulation of the plume flow of a high-flying vehicle[J]. Journal of Remote Sensing, 2015,19(1):54-61.
LI Xiaoying, CHEN Liangfu, GUO Aiyan, et al. Sub-millimeter wave limb sounding simulation of the plume flow of a high-flying vehicle[J]. Journal of Remote Sensing, 2015,19(1):54-61. DOI: 10.11834/jrs.20153314.
The development of a sub-millimeter( 0. 1 mm to 1. 0 mm or 300 GHz to 3 THz) limb sounding technique has enhanced our knowledge of O3 processes. Sub-millimeter wave limb sounding is important because the sub-millimeter includes many spectral lines of trace gases
particularly the halogen family. This study aims to investigate the possibility of limb sounding of a high-flying vehicle plume. ARTS forward model is used to simulate the limb sounding of the plume compositions to study their sensitivity. The sub-millimeter wave limb sounding is sensitive to the concentration variations in H2 O
O2
OH
and HCl. When their concentration is increased five times
their limb sounding bright temperature will increase by 80 K
80 K
5 K
and 50 K
respectively. However
sub-millimeter wave limb sounding is not sensitive to concentration variations in CO
CO2
and NO. Based on a simulated trail of a vehicle flying at an altitude of 15 km
the sub-millimeter wave limb sounding radiance temperatures of the plume under different atmospheric backgrounds are calculated and compared; the different radiance temperatures of limb sounding and nadir viewing are also compared. The plume of the flying vehicle can be detected with a sub-millimeter wave limb sensor under any atmospheric background. However
it cannot be detected with the nadir viewing sensor. Therefore
the sub-millimeter wave limb sounding technique has an advantage over nadir viewing in detecting the plume of a high-flying vehicle
and its atmospheric background affects the limb sounding of the plume.