Measurements of HCl and HF above Arizona from 1970 to 2012
Lloyd Wallace, William Livingston
TL;DR
This study analyzes long-term spectroscopic measurements of HCl and HF in Arizona's atmosphere from 1970 to 2012, revealing trends in their concentrations over four decades.
Contribution
It provides the first comprehensive long-term dataset of HCl and HF variations in the Arizona region over four decades.
Findings
HCl increased until 1998 then decreased
HF steadily increased throughout the period
Results align with Swiss Alps observations
Abstract
We have observed at high resolution spectroscopic changes in Hydrogen Chloride (HCl) and Hydrogen Fluoride (HF) atmospheric trace gases from the 1970s through 2012. HCl rose in strength through 1998 and then decreased to 2012. HF has shown a continual increase to date. Both results are in general agreement with observations from the Jungfraujoch in the Swiss alps.
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Taxonomy
TopicsAtmospheric Ozone and Climate · Atmospheric and Environmental Gas Dynamics · Atmospheric chemistry and aerosols