01419nas a2200181   4500008004100000245006500041210006500106300001200171490000800183520086800191100001701059700002301076700001901099700001701118700001901135700001601154856006701170       2018                        eng d00aLarge and active CO 2 uptake by coupled carbonate weathering0 aLarge and active CO 2 uptake by coupled carbonate weathering  a42 - 490 v1823 a<p>Carbonate mineral weathering coupled with aquatic photosynthesis on the continents, herein termed coupled carbonate weathering (CCW), represents a current atmospheric CO2 sink of about 0.5 Pg C/a. Because silicate mineral weathering has been considered the primary geological CO2 sink, CCW&#39;s role in the present carbon cycle has been neglected. However, CCW may be helping to offset anthropogenic atmospheric CO2 increases as carbonate minerals weather more rapidly than silicates. Here we provide an overview of atmospheric CO2 uptake by CCW and its impact on global carbon cycling. This overview shows that CCW is linked to climate and land-use change through changes in the water cycle and water-born carbon fluxes. Projections of future changes in carbon cycling should therefore include CCW as linked to the global water cycle and land-use change.</p>1 aLiu, Zaihua.1 aMacpherson, G., L.1 aGroves, Chris.1 aMartin, J.B.1 aYuan, Daoxian.1 aZeng, Sibo.  uhttps://linkinghub.elsevier.com/retrieve/pii/S0012825217306153