Retrievals of X CO 2 , X CH 4 and X CO from portable, near-infrared Fourier transform spectrometer solar observations in Antarctica

• Published in: Earth System Science Data
• Main Authors: D. F. Pollard, F. Hase, M. K. Sha, D. Dubravica, C. Alberti, D. Smale
• Format: Article in Journal/Newspaper
• Language: English
• Published: Copernicus Publications 2022
• Subjects: Environmental sciences; GE1-350; Geology; QE1-996.5; Arrival Heights; Ross Island; Antarc*; Antarctica
• Online Access: https://doi.org/10.5194/essd-14-5427-2022; https://doaj.org/article/b9f1372b66464f268af66a8d131cc3bb

The COllaborative Carbon Column Observing Network (COCCON) uses low-resolution, portable EM27/SUN Fourier transform spectrometers (FTSs) to make retrievals of column-averaged dry-air mole fractions (DMFs, represented as X gas ) of CO 2 , CH 4 , CO and H 2 O from near-infrared solar absorption spectra. The COCCON has developed rapidly over recent years and complements the Total Carbon Column Observing Network (TCCON). In this work, we provide details of the first seasonal time series of near-infrared <math xmlns="http://www.w3.org/1998/Math/MathML" id="M9" display="inline" overflow="scroll" dspmath="mathml"><mrow><msub><mi>X</mi><mrow class="chem"><msub><mi mathvariant="normal">CO</mi><mn mathvariant="normal">2</mn></msub></mrow></msub></mrow></math> <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="25pt" height="14pt" class="svg-formula" dspmath="mathimg" md5hash="ad26f5c1a3bce709ccfbdc142b6b6345"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="essd-14-5427-2022-ie00005.svg" width="25pt" height="14pt" src="essd-14-5427-2022-ie00005.png"/></svg:svg> , <math xmlns="http://www.w3.org/1998/Math/MathML" id="M10" display="inline" overflow="scroll" dspmath="mathml"><mrow><msub><mi>X</mi><mrow class="chem"><msub><mi mathvariant="normal">CH</mi><mn mathvariant="normal">4</mn></msub></mrow></msub></mrow></math> <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="24pt" height="14pt" class="svg-formula" dspmath="mathimg" md5hash="92ddc872d984a732d25dbdf219dd194d"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="essd-14-5427-2022-ie00006.svg" width="24pt" height="14pt" src="essd-14-5427-2022-ie00006.png"/></svg:svg> and X CO retrievals from measurements made in Antarctica during the deployment of an EM27/SUN to the Arrival Heights laboratory on Ross Island ...