@article{ECKSTROEM08_ACP, author = "M. Ekstr{\"o}m and P. Eriksson and W. G. Read and M. Milz and D. P. Murtagh", title = "Comparison of satellite limb-sounding humidity climatologies of the uppermost tropical troposphere", journal= "Atmos. Chem. Phys.", volume = "8", pages = "309-320", year = "2008" }