@Article{acp-7-3309-2007,
AUTHOR = {Mahowald, N. M. and Ballantine, J. A. and Feddema, J. and Ramankutty, N.},
TITLE = {Global trends in visibility: implications for dust sources},
JOURNAL = {Atmospheric Chemistry and Physics},
VOLUME = {7},
YEAR = {2007},
NUMBER = {12},
PAGES = {3309--3339},
URL = {http://www.atmos-chem-phys.net/7/3309/2007/},
DOI = {10.5194/acp-7-3309-2007}
}