Journal
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
Volume 310, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jqsrt.2023.108752
Keywords
Stratospheric chemistry; Isotopic abundances; Satellite remote sensing; Infrared Fourier transform spectroscopy
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Using ACE satellite data, the global patterns and seasonal trends of stratospheric NO2 and HNO3, including their 15N isotopes, have been investigated. The study reveals that different isotopes of NO2 and HNO3 exhibit variations in abundance at different latitudes and altitudes.
Using ACE (Atmospheric Chemistry Experiment) satellite data, the volume mixing ratios (VMRs) of stratospheric NO2 and HNO3 and their 15N minor isotopologues have been determined, including global patterns and seasonal trends. Stratospheric & delta;15N values for NO2 and HNO3 have been calculated using VMR data. 14NO2 is relatively enhanced over the winter pole and over the equator in the lower stratosphere but at higher altitudes 15NO2 is enhanced over the winter pole. H15NO3 is relatively enhanced in the lower stratosphere over the summer pole but in the upper stratosphere H14NO3 is enhanced.
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