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Atmospheric Measurement Techniques An interactive open-access journal of the European Geosciences Union

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© Author(s) 2016. This work is distributed
under the Creative Commons Attribution 3.0 License.
Research article
19 Sep 2016
Review status
A revision of this discussion paper was accepted for the journal Atmospheric Measurement Techniques (AMT) and is expected to appear here in due course.
Multi-year comparisons of ground-based and space-borne Fourier Transform Spectrometers in the high Arctic between 2006 and 2013
Debora Griffin1, Kaley A. Walker1,2, Stephanie Conway1, Felicia Kolonjari1, Kimberly Strong1, Rebecca Batchelor1,a, Chris D. Boone2, Lin Dan1, James R. Drummond3, Pierre F. Fogal1, Dejian Fu2,b, Rodica Lindenmaier1,c, Gloria L. Manney4,5, and Dan Weaver1 1Department of Physics, University of Toronto, Toronto, Ontario, M5S 1A7, Canada
2Department of Chemistry, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
3Department of Physics and Atmospheric Science, Dalhousie University, Halifax, Nova Scotia B3H 1Z9, Canada
4NorthWest Research Associates, Socorro, New Mexico, USA
5Department of Physics, New Mexico Institute of Mining and Technology, Socorro, New Mexico 87801, USA
anow at: UCAR Center for Science Education, University Corporation for Atmospheric Research, Boulder, Colorado 80301, USA
bnow at: Jet Propulsion Laboratory/California Institute of Technology, Pasadena, California 91109, USA
cnow at: Pacific Northwest National Laboratory, Richland, Washington 99352, USA
Abstract. This paper presents eight years (2006–2013) of measurements obtained from Fourier Transform Spectrometers (FTSs) in the high Arctic at the Polar Environment Atmospheric Research Laboratory (PEARL, 80.05° N, 86.42° W). These measurements were taken as part of the Canadian Arctic ACE (Atmospheric Chemistry Experiment) Validation Campaigns that have been carried out since 2004 during the polar sunrise period (from mid-February to mid-April). Each spring, two ground-based FTSs were used to measure total and partial columns of HF, O3, and trace gases that impact O3 depletion, namely, HCl, and HNO3. Additionally, some tropospheric greenhouse gases and pollutant species were measured, namely CH4, N2O, CO, and C2H6. During the same time period, the satellite-based ACE-FTS made measurements near Eureka and provided profiles of the same trace gases. Comparisons have been carried out between the measurements from PARIS-IR and the co-located high-resolution Bruker 125HR FTS, as well as with the latest version of the ACE-FTS retrievals (v3.5). The total column comparison between the two co-located ground-based FTSs, PARIS-IR and Bruker 125HR, found very good agreement for most of these species (except HF), with differences well below the estimated uncertainties (~ 6 %) and with high correlations (R ≥ 0.8). Partial columns have been used for the ground-based to space-borne comparison, with coincident measurements selected based on time, distance and scaled potential vorticity (sPV). The comparisons of the ground-based measurements with ACE-FTS show good agreement in the partial columns for most species within 6 % (except for C2H6 and PARIS-IR HF), which are consistent with the total retrieval uncertainty of the ground-based instruments. The correlation coefficients (R) of the partial column comparisons for all eight species range from approximately 0.75 to 0.95. The comparisons show no significant increase in the mean differences over these eight years, indicating the consistency of these datasets and suggesting that the space-borne ACE-FTS measurements have been stable over this period. In addition, changes in the amounts of these trace gases during springtime between 2006 and 2013 are presented and discussed. Increased O3 (0.9 % yr−1), HCl (1.7 % yr−1), HF (3.8 % yr−1), CH4 (0.5 % yr−1) and C2H6 (2.3 % yr−1, 2009–2013) have been found near PEARL from the Portable Atmospheric Research Interferometric Spectrometer for the InfraRed (PARIS-IR) dataset.

Citation: Griffin, D., Walker, K. A., Conway, S., Kolonjari, F., Strong, K., Batchelor, R., Boone, C. D., Dan, L., Drummond, J. R., Fogal, P. F., Fu, D., Lindenmaier, R., Manney, G. L., and Weaver, D.: Multi-year comparisons of ground-based and space-borne Fourier Transform Spectrometers in the high Arctic between 2006 and 2013, Atmos. Meas. Tech. Discuss., doi:10.5194/amt-2016-272, in review, 2016.
Debora Griffin et al.
Debora Griffin et al.
Debora Griffin et al.


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