Ultraviolet and Visible Spectroscopy at McMurdo Station

这个项目是研究南极平流层的化学成分，重点是与每年春季臭氧耗损有关的化学成分，即所谓的臭氧空洞。可见光和近紫外光谱将用于测量南极洲麦克默多上空二氧化氮、对称二氧化氯、三氧化二氮和一氧化二溴的总色谱柱丰度。这些化学物质的日变化对理解引起臭氧空洞的光化学过程具有特别的价值。此外，一项在日出和日落时使用月球作为光源的新技术将允许测量垂直剖面和快速反应物质的光解速率。本研究由NOAA航空实验室资助，由NSF/DPP提供后勤支持。

This project is to study the chemistry of the antarctic stratosphere with a focus on those chemical constituents that are related to the annual springtime depletion of ozone, known as the ozone hole. Visible and near ultraviolet spectroscopy will be used to measure the total column abundances of nitrogen dioxide, symmetrical chlorine dioxide, nitrogen trioxide and bromine monoxide above McMurdo, Antarctica. The variation of the diurnal variation of these chemicals is of particular value in understanding the photochemical processes that cause the ozone hole. In addition, a novel technique that uses the moon as a light source during times of sunrise and sunset will allow the measurement of vertical profiles and also the rate of photolysis of fast reacting species. This research is funded by the NOAA Aeronomy Laboratory with logistical support provided by NSF/DPP.