A US national park has deleted several tweets on climate change statistics from its official Twitter account hours after posting them.

The tweets from Badlands National Park follow several gag orders and suspensions on US federal agencies by President Donald Trump's new administration.

The national park in South Dakota addressed issues such as carbon dioxide in the atmosphere and ocean acidity in the tweets.

"Today, the amount of carbon dioxide in the atmosphere is higher than at any time in the last 650,000 years," one tweet said.

Tweets from the Badlands National Park account on climate change statistics. ( Twitter )

Before being deleted, the tweets were retweeted thousands of times and were seen by observers as veiled defiance of the new US Government's stance on climate change.

"Badlands National Park is trolling hard right now by doing something crazy like reporting scientific fact," Jack Jenkins tweeted.

The tweets come after Mr Trump's administration enforced what it said would be a temporary media blackout on the Environmental Protection Agency (EPA), whose social media accounts have been silent since Friday's inauguration.

The rules ban staff from publishing press releases, blog posts and updates on social media, as well as stopping them from awarding new contracts and grants.

"A fresh look at public affairs and communications processes is common practice for any new Administration," a statement from the EPA's office of public affairs said.

Employees within the US Department of Agriculture have also been banned by the US Government from sharing its research with the public in all forms, including social media.

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On the weekend, the Interior Department was also briefly banned from tweeting after the National Park Service account retweeted a photo showing the crowd size difference between Mr Trump's and former president Barack Obama's inaugurations.

That account later tweeted an apology over the "mistaken" retweets, and Park Service representatives have since claimed the decision to stop tweeting was out of hacking concerns.

During the presidential transition period, Mr Trump said "nobody really knows" if climate change is real, and has also previously said he believes climate change is a hoax perpetuated by China.

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White House press secretary Sean Spicer said in a press briefing this week the new administration would "figure out what policies are best for the environment".

"One of the things he talked about during the campaign is there's a balance, and he's trying to make sure we use our resources appropriately, that we maximise things to make sure that we don't do so at the detriment of economic growth and job creation," he said.

The White House deleted the climate change policies on its website on the day of the inauguration.