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|Title:||Seasonal and solar activity variation of NO<sub>2</sub> over Ahmedabad|
|Authors:||Chakrabarty, D K|
Nitrogen dioxide column density
|Abstract:||Nitrogen dioxide, NO<sub>2</sub>, has strong absorption signatures in 436-448 nm region. Using this property, column density of this species has been determined at Ahmedabad, a low latitude station. Absorption spectrum has been measured by a ground-based spectroscopy technique during twilight period. Scattered zenith sunlight has been used as the source of light. The twilight slant column density (SCD) values have been found to be ~ 10<sup>17 </sup>cm<sup>–2</sup>. A summer maximum and a winter minimum, and a decreasing trend of NO<sub>2</sub> with an increase of solar activity level are seen. These results have been compared with the UARS and GOME satellite values.|
|Appears in Collections:||IJRSP Vol.35(5) [October 2006]|
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