Has sea level rise slowed down?

This is a piece taken from the Wikipedia page for the Jason-1 satellite used to measure sea level rise.

Although the 1993–2005 Topex/Poseidon satellite measured an average annual Global Mean Sea Level rise of 3.1 mm/year, Jason-1 is measuring only 2.3 mm/year GMSL rise, and the Envisat satellite (2002–2012) is measuring just 0.5 mm/year GMSL rise.

This would show that either the sea level rise is slowing down or that satellites can not accurately measure the sea level if they are showing completely different readings.

• I love the people who try to claim that something isn't serious because "the rate of increase has slowed down". A man falling from a cliff will find that after a bit the rate of increase of his downward speed slows down. Doesn't mean he isn't going to hit the ground. Jul 20, 2019 at 21:32
• @DJClayworth: Your point is a good one in some cases. However, in your example you talk about the "rate of increase of his downward speed", or his acceleration. The OP is asking about a velocity decrease (mm/year). If true, this is indeed good news because it is trending towards a zero sea level rise/year. The correct analogy is that the velocity of a falling man is decreasing. Jul 22, 2019 at 11:36
• @JMac: It's true that the "change in yearly sea level rise [is] equivalent to acceleration", but the point is that this acceleration is negative (according to OP's reference). If true and if the trend continues, then soon the sea level will be dropping and we will enter a new ice age. I'm not saying I think this is happening. I'm saying that if the OP's reference is correct, then it would have significant ramifications. Going back to DJClayworth's analogy, if the falling man is in fact decelerating then he may not hit the ground after all. Jul 22, 2019 at 14:27
• @James The point is that just looking at a current trend doesn't give you enough information to determine if things are okay or not. That seems to be DJClayworth's point. If OP's reference is correct, it might have significant ramifications; but just looking at the current trend wont tell us how far away the ground is and how fast we are going to hit, as it were.
– JMac
Jul 22, 2019 at 14:32
• @James: The conclusion, that a negative acceleration leads to a dropping, isn't forcing. A rise might develop like 4, 2, 1, 0.5, 0.25mm/y with negative acceleration, but infinite rising, though. Jul 23, 2019 at 8:58