@article{Hegglin_2021, title={Overview and update of the SPARC Data Initiative: comparison of stratospheric composition measurements from satellite limb sounders}, volume={13}, ISSN={1866-3516}, url={http://dx.doi.org/10.5194/essd-13-1855-2021}, DOI={10.5194/essd-13-1855-2021}, number={5}, journal={Earth System Science Data}, publisher={Copernicus GmbH}, author={Hegglin, Michaela I. and Tegtmeier, Susann and Anderson, John and Bourassa, Adam E. and Brohede, Samuel and Degenstein, Doug and Froidevaux, Lucien and Funke, Bernd and Gille, John and Kasai, Yasuko and Kyrölä, Erkki T. and Lumpe, Jerry and Murtagh, Donal and Neu, Jessica L. and Pérot, Kristell and Remsberg, Ellis E. and Rozanov, Alexei and Toohey, Matthew and Urban, Joachim and von Clarmann, Thomas and Walker, Kaley A. and Wang, Hsiang-Jui and Arosio, Carlo and Damadeo, Robert and Fuller, Ryan A. and Lingenfelser, Gretchen and McLinden, Christopher and Pendlebury, Diane and Roth, Chris and Ryan, Niall J. and Sioris, Christopher and Smith, Lesley and Weigel, Katja}, year={2021}, month=may, pages={1855–1903} }