COMPARISONS OF ACE-FTS AND PARIS-IR MEASUREMENTS OF SEVERAL TRACE GASES IN THE NORTHERN MID-LATITUDE ATMOSPHERE
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Date
2005
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Publisher
Ohio State University
Abstract
Infrared solar absorption spectra were recorded at Waterloo, Ontario (43.47$^o$N, 80.55$^o$W) and Vanscoy, Saskatchewan (52.02$^o$N, 107.03$^o$W) using the Portable Atmospheric Research Interferometric Spectrometer (PARIS-IR). Column amounts of several trace gases (for example O$_3$, CH$_4$, CO$_2$, N$_2$O and CFCs) were obtained from the spectra by using an Optimal Estimation Method (OEM) retrieval code (SFIT2 Version 3.81). These ground-based results have been compared with partial column densities retrieved from the measurements in the northern mid-latitude atmosphere (42$^o$N - 53$^o$N) recorded by the Atmospheric Chemistry Experiment Fourier Transform Spectrometer (ACE-FTS) on-board the Canadian science satellite also known as SCISAT-1. Because PARIS-IR and ACE-FTS have similar designs, these comparisons not only provide the concentration information for the target gases in the northern mid-latitude atmosphere but also can be used to assist in validating the quality of observations made by the ACE-FTS.
Description
Author Institution: Department of Chemistry, University of Waterloo, Waterloo, Onatrio, Canada N2L 3G1