Image credit: NASA Earth Observatory, Robert Simmon
While average global temperature will still fluctuate from year to year, scientists focus on the decadal trend. Nine of the 10 warmest years since 1880 have occurred since the year 2000, as the Earth has experienced sustained higher temperatures than in any decade during the 20th century. As greenhouse gas emissions and atmospheric carbon dioxide levels continue to rise, scientists expect the long-term temperature increase to continue as well.
"We know the planet is absorbing more energy than it is emitting," said NASA Goddard Institute for Space Studies director James Hansen.
"So we are continuing to see a trend toward higher temperatures. Even with the cooling effects of a strong La Nina influence and low solar activity for the past several years, 2011 was one of the 10 warmest years on record."
Hansen said that with the anticipated return of El Nino and a coming increase in solar activity, temperatures are likely to peak further in the coming years.
"Now, more than ever, the illusions of division threaten our very existence. We all know the truth: more connects us than separates us. But in times of crisis the wise build bridges, while the foolish build barriers. We must find a way to look after one another as if we were one single tribe.” -King T'Challa, Black Panther
The truth is incontrovertible. Malice may attack it. ignorance may deride it, but in the end, there it is. ~Winston Churchill
No idea! You should start working on that time machine so we can go back and get more accurate measurements of temps and greenhouse gas concentrations so we can resolve some of those uncertainties! tongue:
"Now, more than ever, the illusions of division threaten our very existence. We all know the truth: more connects us than separates us. But in times of crisis the wise build bridges, while the foolish build barriers. We must find a way to look after one another as if we were one single tribe.” -King T'Challa, Black Panther
The truth is incontrovertible. Malice may attack it. ignorance may deride it, but in the end, there it is. ~Winston Churchill
Well, it's a darn sight cooler than the volcanic heat that was around when the lighting bolt hit the primordial ooze and started the life infestation on this planet. Oh, for the good old days before all the oxygen invaded the atmosphere and turned the whole place blue.
"Whatever you are, be a good one." ~ Abraham Lincoln