The ozone hole above Antarctica caused by excess GHGs is measured by examining the reduction in the total column ozone at a point along the earth's surface. The unit of measure used to express this is called the

The ozone hole above Antarctica caused by excess GHGs is measured by examining the reduction in the total column ozone at a point along the earth's surface. The unit of measure used to express this is called the

The ozone hole above Antarctica caused by excess GHGs is measured by examining the reduction in the total column ozone at a point along the earth's surface. The unit of measure used to express this is called the



Answer: Dobson unit