E continua: balanço energértico da Terra - o desiquilíbrio acumula-se

Figure 1: Time history of energy flow into Earth's climate, calculated from the derivative of the Earth's heat content using Domingues 2008 for upper ocean heat (Murphy 2009).

Figure 2: Cumulative energy budget for the Earth since 1950, showing mostly positive and mostly long-lived forcing agents from 1950 through 2004.

Figure 3: Cumulative negative forcings such as stratospheric aerosols, direct and indirect aerosol forcing, increased outgoing radiation from a warming Earth, and the amount remaining to heat the Earth.

É informativo. Ler Measuring Earth's energy imbalance do Skeptical Science onde se dá conta de trabalho recente de contabilização do efeito acumulado de um conjunto de factores que conformam a evolução recente (desde os anos 50 do século XX) do balanço energético da Terra. Transcreve-se abaixo o primeiro parágrafo da nota e a sua última frase.

"When the Earth is in energy imbalance, with more energy coming in than radiating back out into space, we experience global warming. How do we know if there's an energy imbalance? This can be determined empirically in two ways. Firstly, by using satellites to directly measure the difference between incoming energy from the sun and outgoing radiation from the earth. Secondly, by adding up the energy content of the atmosphere and ocean over time. The newly published paper An observationally based energy balance for the Earth since 1950 (Murphy 2009) does both. [...]"

"[...] when you look at the entire planet's heat content, a clearer picture emerges. The planet is steadily accumulating heat due to its energy imbalance."