@article{TOOHEY13_JGR, author = "M. Toohey and M. I. Hegglin and S. Tegtmeier and J. Anderson and J. A. A{\~n}el and A. Bourassa and S. Brohede and D. Degenstein and L. Froidevaux and R. Fuller and B. Funke and J. Gille and A. Jones and Y. Kasai and K. Kr{\"u}ger and E. Kyr{\"o}l{\"a} and J. L. Neu and A. Rozanov and L. Smith and J. Urban and T. von Clarmann and K. A. Walker and R. H. J. Wang", title = "Characterizing sampling biases in the trace gas climatologies of the {SPARC D}ata {I}nitiative", journal= "J. Geophys. Res. Atmos.", volume = "118", number = "20", doi = "10.1002/jgrd.50874", pages = "11,847-11,862", year = "2013" }