Research needs for finely resolved fossil carbon emissions - Gurney, K.; Ansley, W.; Mendoza, D.; Petron, G.; Frost, G.; Gregg, J.; Fischer, M.; Pataki, Diane; Ackerman, K.; Houweling, S.; Corbin, K.; Andres, R.; et al. (Eos, Transactions, American Geophysical Union, 2007)