are, so far away from it. the thing is what is happening is theiceis thing is what is happening is the ice is going into the ocean and ultimately reaching our shorelines, we ever we may live, whether it s great britain or the united states or anywhere else in the world, we all have shorelines in the global sea level rise is ever so slowly rising because of this extra ice that s been added to the ocean from the melting of the ice sheet. giue melting of the ice sheet. give us an idea- melting of the ice sheet. give us an idea. we melting of the ice sheet. give us an idea. we hear- melting of the ice sheet. give us an idea. we hear about. melting of the ice sheet. give us an idea. we hear about a centimetre here and a centimetre here and a centimetre there which is difficult to quantify in some respects. we were to lose antarctica terms of ice, what would that mean? if antarctica terms of ice, what would that mean? would that mean? if all of antarctica would that mean? if all of an
even a small percentage of that amount is a large number. and amount is a large number. and that gives amount is a large number. and that gives us amount is a large number. and that gives us an amount is a large number. and that gives us an idea, i suppose the really gloomy part has to be that we are in the world which is trying to fight the ever increasing global warming, at the moment. as long as there is any warming at all there will be more ice melt? that s exactly right there is a lag in the earth system. what we know is a lot of extra heat being absorbed has actually been absorbed in the ocean, and that s been very difficult to measure and quantify but we know it s there stop it s very slowly making its way to the edges of the ice sheets and melting around the edges. we are just seeing this very slight, slow erosion of the ice around the edges, melting from the ocean underneath. it is actually weakening the ice and preventing it, or reducing its efficacy for holding back th
this is bbc news. the latest headlines: president putin says the west is ignoring his demands over security and accuses the us of trying to drag russia into war. the white house has condemned a spate of bomb threats made to several historically black us colleges and universities as america begins to mark black history month. every week at this time, we take a look at the climate crisis, bringing you stories with big implications for our planet s future. this week on climate critical, we focus on ice, and drastic, changes to polar icecaps and glaciers as a result of global warming. one example for you in 2017, a i trillion tonne iceberg known as a 68 broke away
ice that is on the ice sheet. and we are talking largely about freshwater ice. that in itself must be having an impact as it slides back into the sea? yes, exactly. it is freshwater because it essentially ice that has formed, snow fell, that s how ice gets added to antarctica, snowfall, and that turns into ice over time. yes when that freshwater reaches the ocean, that will effect the circulation around antarctica, and it all has an impact. l’m and it all has an impact. i m sorry to and it all has an impact. i m sorry to end and it all has an impact. i m sorry to end on and it all has an impact. i m sorry to end on a and it all has an impact. i m sorry to end on a negative note like that and helen, thank you very much indeed on inviting us as to the challenge being faced in the antarctic, and indeed, elsewhere. one of the challenges of tackling climate change is compiling accurate data. how does the rise in temperature affect plant life and animal numbers?