Nightglow in the upper atmosphere of Mars and implications for atmospheric transport

被引：82
|
作者：
Bertaux, JL
Leblanc, F
Perrier, SV
Quemerais, E
Korablev, O
Dimarellis, E
Reberac, A
Forget, F
Simon, PC
Stern, SA
Sandel, B
机构：
[1] CNRS, Serv Aeron, Inst Pierre Simon Laplace, F-91371 Verrieres Le Buisson, France
[2] Moscow Space Res Inst, Moscow 117810, Russia
[3] Univ Paris 06, Meteorol Dynam Lab, IPSL, F-75252 Paris, France
[4] Inst Aeron Spatiale Belgique, B-1180 Brussels, Belgium
[5] SW Res Inst, Boulder, CO 80302 USA
[6] Univ Arizona, Lunar & Planetary Lab, Tucson, AZ 85721 USA
来源：
SCIENCE | 2005年 / 307卷 / 5709期
关键词：
D O I：
10.1126/science.1106957
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
We detected light emissions in the nightside martian atmosphere with the SPICAM (spectroscopy for the investigation of the characteristics of the atmosphere of Mars) ultraviolet (UV) spectrometer on board the Mars Express. The UV spectrum of this nightglow is composed of hydrogen Lyman a emission (121.6 nanometers) and the gamma and delta bands of nitric oxide (NO) (190 to 270 nanometers) produced when N and O atoms combine to produce the NO molecule. N and O atoms are produced by extreme UV photodissociation of O-2, CO2, and N-2 in the dayside upper atmosphere and transported to the night side. The NO emission is brightest in the winter south polar night because of continuous downward transport of air in this region at night during winter and because of freezing at ground level.
引用
收藏
页码：566 / 569
页数：4
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