Environmental protesters have vowed a campaign of "mass civil disobedience" until politicians and officials declare a "climate emergency".

On Saturday, more than 100 people marched through Glasgow to George Square protesting the government and city council's lack of action over climate change.

Organised by Extinction Rebellion Glasgow, the protesters formed a 'blue wave' by wearing blue and green colours to represent the rising sea-levels and flooding caused by the rise in global temperatures.

The marchers have demanded that Glasgow City Council commit to reducing carbon emissions to zero by 2025.

At Glasgow City Chambers, buckets of water taken from the Clyde were thrown at the council building to symbolise the danger to come.

A spokesperson from Extinction Rebellion Glasgow said: "It's time to take action against climate change before it's too late.

"Summer 2018 was the warmest summer ever recorded in the UK.

"Glasgow recorded its hottest day since records began on Thursday, June 28, reaching 31.9 degree Celsius.

"This caused the roof lining of the Science Centre to melt, and some city railway lines to buckle and signalling systems to fail.

"2018's publicly-funded Climate Ready Clyde key findings report tells us what further climate breakdown will mean for Glasgow: floods, storms, failing infrastructure and displaced people.

"Winter rainfall could rise by 50% by 2080. The M74 and M8 motorways will be underwater, the tracks and bridges of the West Highland Line will be damaged by coastal erosion, and the Erskine Bridge will be battered by gales."

The group claimed that the poorest neighbourhoods in the north and east of the city would be hit the hardest, adding that the financial costs of building flood defences and new infrastructure in response to climate change are estimated around £400m.

The spokesperson added: "At the moment, our local authorities are only thinking about reacting to climate change, rather than taking immediate, far-reaching action to limit catastrophe as much as possible.

"If all glacial ice melts, the sea level will rise by 70 metres putting most of Glasgow underwater."

In response to the protest, a Glasgow City Council spokesman said: "Glasgow continues to make significant progress in this area, having exceeded our emissions reduction target for 2020, ahead of schedule.

"We also recently established a Climate Emergency Working Group in recognition of the gravity of the situation facing the world in the age of climate change.

"To mitigate the impact of climate change, we are aiming to become a carbon neutral city by 2037, and as part of its wide-ranging remit the group will look at what needs to be done to meet this commitment and also how the 2037 target could be brought forward."