Leaked government document 'directly contradicts' Trump on climate change

The report outlines how the average temperature in the USA has risen rapidly since 1980, and recent decades have been the warmest of the past 1,500 years. After setting a record that year, global temperatures shot to a new record by a wide margin in 2015, the report says, followed by another record last year.

The report is a major rebuttal and rebuke to the climate-denying president. "That's not a future prediction anymore". But Mr. Trump can't unilaterally change the text of the Paris deal. We are living, right now, contending with more and increasingly brutal climate events - floods, droughts, heat waves and hurricanes - mostly of our own man-made doing.

The actual temperatures measured show that the USA climate is no warmer now than prior to 1960. "These are all physically very closely linked with high temperatures".

"As others have pointed out - and The New York Times should have noticed - drafts of this report have been published and made widely available online months ago during the public comment period", the official said. A copy of it was obtained by The New York Times.

The 13 government agencies must sign off on the report by Sunday. For example, a global temperature rise of 1.5 degrees to 2 degrees Celsius could cause more intense rainstorms, longer heat waves and lead to more rapid deterioration of coral reefs, scientists say. The East will get wetter, and the Southwest drier. I think a lot of this is, we're not saying that climate change is not real.

While it is not certain that the frequency of intense hurricanes will increase, hurricanes that do occur will bring more rainfall than ever and could potentially be more destructive. That would disrupt California's highly engineered plumbing system, which relies on the Sierra snowpack to store water for the dry summers.

The report breaks down the likelihood and confidence in all the many projections - and also leaves open the door for unforeseen changes as the feedback loop of warming continues into the 21 century, they add. Alarmingly, the bulk of that change was made in the latter half of the 20th century, with a 1.2 degree increase since 1951. "But understandably there are fears that it won't be approved, or that it could be returned to the authors with substantial changes that we might not be comfortable with, because they aren't consistent with the science".

A United States official said a major priority in these talks would be to beat back attempts to have separate standards in the guidance on emissions cuts for rich and poor nations - long a sticking point in negotiations.

Climate change is costly. There's nothing over the top, nothing outside the pale.

"At some point, flooding goes from being a nuisance to building a new levee or retreating from the shore", he said.

It's something that will transform our economy and the places we live.

Sea-level rise is expected to be worse in the Northeast and along the Gulf of Mexico, in part because the land in those regions is naturally subsiding. "I do not have any information to share on the nature or timing of the process", they were told to say.

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