Scott K Johnson the American Hydrogeologist and Earth science instructor at Madison College has published an article on Ars Technica titled ‘Oceans continue to warm, especially the deeps’ referring to altered patterns seen over past two decades. In the article Johnson states “When discussing global warming, the public eye is mostly directed to global average surface air temperatures, but that’s just one slice of the climate pie. If you haven’t noticed, the ocean is awfully big, and it holds a great deal more heat energy than the atmosphere. In fact, about 90 percent of the energy that’s been added to the climate system by human activities has gone into the ocean. …The resulting ocean heat content data shows some interesting features. Drops in ocean heat content coincide with large volcanic eruptions, which pump sunlight-reflecting aerosol particles into the atmosphere for a time. But there’s also a small drop after 1998—a year known for the incredibly strong El Nino that pushed global surface temperature to a (then) high point. …After this period, ocean heat content continued to rise sharply—especially in the deep ocean. The paper states that “recent warming rates of the waters below 700 [meters] appear to be unprecedented” in the record. Supporting some earlier estimates, the data shows about 30 percent of ocean warming after 1998 taking place more than 700 meters down. While it’s certainly useful to note the extent to which heat energy is accumulating in the climate system, it’s more interesting to ask why the deep ocean has taken such a large share of it recently. It seems to relate to changes in ocean circulation. A 2011 study indicated that La Ninas and a circulation pattern called the Pacific Decadal Oscillation could cause lulls in surface warming while energy is stuffed into the deep ocean. That may be exactly what we’ve experienced over the past decade. When those conditions change, we’ll see the effects in higher surface temperatures.”  Inspired by Scott K Johnson, ars technica ow.ly/k8XFo Image source Twitter ow.ly/k8Y70 Oceans continue to warm especially the deeps (May 14 2013)

Scott K Johnson the American Hydrogeologist and Earth science instructor at Madison College has published an article on Ars Technica titled ‘Oceans continue to warm, especially the deeps’ referring to altered patterns seen over past two decades. In the article Johnson states “When discussing global warming, the public eye is mostly directed to global average surface air temperatures, but that’s just one slice of the climate pie. If you haven’t noticed, the ocean is awfully big, and it holds a great deal more heat energy than the atmosphere. In fact, about 90 percent of the energy that’s been added to the climate system by human activities has gone into the ocean. …The resulting ocean heat content data shows some interesting features. Drops in ocean heat content coincide with large volcanic eruptions, which pump sunlight-reflecting aerosol particles into the atmosphere for a time. But there’s also a small drop after 1998—a year known for the incredibly strong El Nino that pushed global surface temperature to a (then) high point. …After this period, ocean heat content continued to rise sharply—especially in the deep ocean. The paper states that “recent warming rates of the waters below 700 [meters] appear to be unprecedented” in the record. Supporting some earlier estimates, the data shows about 30 percent of ocean warming after 1998 taking place more than 700 meters down. While it’s certainly useful to note the extent to which heat energy is accumulating in the climate system, it’s more interesting to ask why the deep ocean has taken such a large share of it recently. It seems to relate to changes in ocean circulation. A 2011 study indicated that La Ninas and a circulation pattern called the Pacific Decadal Oscillation could cause lulls in surface warming while energy is stuffed into the deep ocean. That may be exactly what we’ve experienced over the past decade. When those conditions change, we’ll see the effects in higher surface temperatures.”

 

Inspired by Scott K Johnson, ars technica ow.ly/k8XFo Image source Twitter ow.ly/k8Y70