By John Lawrence
As the amount of carbon dioxide pumped into the atmosphere continues to increase, a certain portion of that gets absorbed by the oceans. This year alone some two and a half billion tons of CO2 will be absorbed by the oceans. That represents seven pounds pumped into the seas by every American.
Oceans cover seventy percent of the earth’s surface, and everywhere the oceans and the atmosphere come into contact there is an exchange of gases. When this exchange is in balance, there is no problem. But when the atmosphere’s gaseous composition has been changed, which it has since the industrial revolution, the exchange becomes lopsided. More CO2 goes into the ocean than comes out.
Since the start of the industrial revolution, humans have burned through enough fossil fuels to add 365 billion metric tons of carbon to the atmosphere. Deforestation has added another 180 billion tons. Each year we add another nine billion tons or so, and that amount has been increasing 6 percent annually. Today the concentration of carbon dioxide in the air is 400 parts per million (PPM). This is higher than it has been at any time in the last 800,000 years.