Prime Minister Tony Abbott has described himself as a ''conservationist'' who has no disagreement with US President Barack Obama on the subject of climate change.

Speaking after his meeting with Mr Obama in Washington, Mr Abbott played down any differences between the two leaders, saying that both he and the US President took climate change ''very seriously''.

''We all want to do the right thing by our planet,'' he told ABC Radio on Friday. ''I regard myself as a conservationist.''