science reporter magazine pdf

science reporter magazine pdf

Science reporter monthly magazine subscription Southern Ocean is an essential ocean with respect to climate change. Today, it is considered as a source of carbon dioxide (CO2) via the deep ocean circulation. Science reporter monthly magazine subscription It however absorbs about 50 % anthropogenic CO, because of low sea-surface tem¬peratures and organic productivity. Thus, this region controls CO, changes through several processes. Science reporter monthly magazine subscription The deep waters that upwell in the Southern Ocean inject nutrients but also CO2 that escapes to the atmosphere. During past colder periods, science reporter magazine pdf such as the last glacial maxi¬mum dated back to 19,000 to 23,000 years before present, the Southern Ocean upwelling was reduced, probably because of high sea-ice cover and colder, denser deep waters which allowed storing of more CO, in deep waters. science reporter magazine pdf  This CO2 could not leak into the atmosphere. Additionally, the Southern Ocean primary productivity was overall higher during these cold pe-riods science reporter magazine pdf actively pumping CO2 from the atmosphere. As less CO2 was present in the atmosphere the global climate was colder.