Teenage environmental activist Greta Thunberg has landed in New York after a 15-day journey across the Atlantic by boat.

She will be participating in UN climate summits in New York City and Chile.

The 16-year-old Swede sailed from Plymouth in the UK on a solar-powered yacht in order to minimise the carbon footprint of her travel.

On Wednesday morning, she anchored at Coney Island and expects to come ashore this afternoon.

Greta was expected to arrive sooner, but rough seas slowed her progress. She has been documenting the 3,000-mile (4,800km) voyage on social media.

As she departed the UK two weeks ago, she told the BBC that travelling by boat sends a signal that “the climate change crisis is a real thing”.

She will be present at the UN climate summit on 23 September and the COP25 climate conference in Chile in December.

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The teenager has made headlines for her “school strikes” which have inspired a worldwide climate change protest movement.

Her first “strike for climate” took place outside the Swedish Parliament in August last year.

Greta travelled on the Malizia II, a high-speed, 60ft (18m) racing yacht with underwater turbines and no carbon emissions.

She made the journey with her father, captain Boris Herrmann, Monaco royal family member Pierre Casiraghi and a Swedish documentary maker, Nathan Grossman.

The teenager was nominated for a Nobel Peace Prize earlier this year.

Greta has been diagnosed with Asperger’s, a form of autism, which she told the BBC allows her to “see things from outside the box”.

“If I would’ve been like everyone else, I wouldn’t have started this school strike for instance,” she said.