@Article{acp-7-629-2007, AUTHOR = {Varotsos, C. and Assimakopoulos, M.-N. and Efstathiou, M.}, TITLE = {Technical Note: Long-term memory effect in the atmospheric CO$_{2}$ concentration at Mauna Loa}, JOURNAL = {Atmospheric Chemistry and Physics}, VOLUME = {7}, YEAR = {2007}, NUMBER = {3}, PAGES = {629--634}, URL = {http://www.atmos-chem-phys.net/7/629/2007/}, ISSN = {1680-7316} }