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sea ​​level rise is one of

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the clearest signs of

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global warming over the last two

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decades information collected by

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NASA satellites as well as

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aerial campaigns and

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field research shows a constant rise in the

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level of the oceans of the  planet

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as the polar caps melt we

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have Dr. Carlos

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del Castillo from

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NASA's Goddard Space Flight Center with us to

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comment that he is studying NASA

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to help us understand how much and

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how fast sea levels will rise

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in  the next decades doctor del

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castillo thank you for being here or

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thank you for the invitation the last few

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years have been the warmest on

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record that show us

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the new images on the rise in

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sea level these new images

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were produced by 13 satellites  that

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nasa and the european space agencies

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were working on the planet

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earth and these satellites use

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radars to measure the rise in

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sea level the radars are excellent

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they can measure differences in the

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sea level at the level of centimeters and what

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we are seeing is that  On average, the

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sea level has risen about 7

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centimeters. The image also

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shows us that this increase in

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sea level is not the same in all

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places and this is due to the dynamics

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of ocean currents,

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differences in temperatures, and

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similar situations.  but the

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main message is that the sea level was

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rising dramatically

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that is causing this rise in

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sea level there are two

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fundamental reasons when the planet

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warms up the oceans also

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warm up and when the water heats up

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the water expands and that causes

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approximately  half of the increase

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in sea level that we are seeing

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the other part is that there are polar caps

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in Greenland and also in Antarctica

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and these polar caps contain enormous

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amounts of fresh water and as we are

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seeing in the image the

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pink and colored areas  red are places where

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ice loss is accelerating and

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that melting ice goes into the ocean

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causing sea level rise what is

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nasa doing to understand

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how much sea level could rise in

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the future nasa has a fleet  of

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satellites that look at different aspects

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of the planet earth we have satellites

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dedicated to studying the atmosphere

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they study the oceans they study the land

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study the ice sheets and the data

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two satellites give us information

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that is extremely important because

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we can see the entire planet the

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second we do  is that we have

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scientists who go to the field we take

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water they take measurements to take

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measurements to corroborate the

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satellite imagery and all of this is put together with

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numerical models that are used to

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better understand the earth system but

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also to predict how the system is going to

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change  as the

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concentrations of carbon dioxide in

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the atmosphere increase

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thank you very much for all this information

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where we can learn more about this

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subject

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the best place is to go to nasa.gov