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Shrinking freshwater availability increasing land contribution to sea level rise

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Re: Shrinking freshwater availability increasing land contribution to sea level rise

#11

Post by srameshc »

garrettdreyfus wrote: post #4

I’m not sure this title is completely correct “The researchers identified the type of water loss on land, and for the first time, found that 68% came from groundwater alone — contributing more to sea level rise than glaciers and ice caps on land.” They are saying the leading loss of water loss is from ground water. The largest contributor to sea level rise I would guess is still thermosteric sea level rise due to the…

> New findings from studying over two decades of satellite observations reveal that the Earth’s continents have experienced unprecedented freshwater loss since 2002, driven by climate change, unsustainable groundwater use and extreme droughts.

The title captures the crux of the story

Re: Shrinking freshwater availability increasing land contribution to sea level rise

#12

Post by yboris »

garrettdreyfus wrote: post #8
garrettdreyfus wrote: post #4

I’m not sure this title is completely correct “The researchers identified the type of water loss on land, and for the first time, found that 68% came from groundwater alone — contributing more to sea level rise than glaciers and ice caps on land.” They are saying the leading loss of water loss is from ground water. The largest contributor to sea level rise I would guess is still thermosteric sea level rise due to the…

My reading of Figure 6 https://www.science.org/doi/10.1126/sciadv.adx0298 suggests that this study still has thermosteric effects making up the majority of sea level rise. I also highly recommend reading up on the GRACE satellite used in this study it is amazing https://gracefo.jpl.nasa.gov/resources/50/how-grace-fo-measu...

Thank you for sharing, GRACE-FO feels to me like a brilliant design!

Re: Shrinking freshwater availability increasing land contribution to sea level rise

#13

Post by cycomanic »

giantg2 wrote: post #3

So they claim the majority of the water is ground water and also that it is due to climate change. But I thought I've seen other studies talking about how ground water is being depleted at a higher rate than it could be replaced, even using historical averages. This sounds more like a population/industrialization issue than a climate issue.

> So they claim the majority of the water is ground water and also that it is due to climate change. But I thought I've seen other studies talking about how ground water is being depleted at a higher rate than it could be replaced, even using historical averages. This sounds more like a population/industrialization issue than a climate issue.

I'm not sure I understand where you see a contradiction. Land areas are using groundwater faster than it can be replenished, so land is getting drier. That's according to the article (just basing of the summary not the scientific one) is driven by both overuse and drier and warmer weather. The thing is, that's a feedback loop, if it gets drier we'll be using more groundwater for irrigation. So both processes are driven by climate change.

Re: Shrinking freshwater availability increasing land contribution to sea level rise

#14

Post by marcosdumay »

jfengel wrote: post #2

Unlike climate change, this is a self correcting problem. We'll tap the last of the fresh water, and then no more sea level rise (from that source). Problem solved, once and for all.

Well, that applies to most of our habitat-change problems.

Re: Shrinking freshwater availability increasing land contribution to sea level rise

#15

Post by garrettdreyfus »

srameshc wrote: post #11
garrettdreyfus wrote: post #4

I’m not sure this title is completely correct “The researchers identified the type of water loss on land, and for the first time, found that 68% came from groundwater alone — contributing more to sea level rise than glaciers and ice caps on land.” They are saying the leading loss of water loss is from ground water. The largest contributor to sea level rise I would guess is still thermosteric sea level rise due to the…

> New findings from studying over two decades of satellite observations reveal that the Earth’s continents have experienced unprecedented freshwater loss since 2002, driven by climate change, unsustainable groundwater use and extreme droughts. The title captures the crux of the story

Sorry I am referring to HN submission title not the article title

Re: Shrinking freshwater availability increasing land contribution to sea level rise

#16

Post by riffraff »

micromacrofoot wrote: post #10
oh_my_goodness wrote: post #7

Earlier quoted context omitted.

I think the change in lifestyle from using up all the groundwater would be pretty severe.

personally i'm just going to evolve

Not developing mutations to live in a mad max style future shows lack of initiative

Re: Shrinking freshwater availability increasing land contribution to sea level rise

#19

Post by nabwodahs »

cycomanic wrote: post #13
giantg2 wrote: post #3

So they claim the majority of the water is ground water and also that it is due to climate change. But I thought I've seen other studies talking about how ground water is being depleted at a higher rate than it could be replaced, even using historical averages. This sounds more like a population/industrialization issue than a climate issue.

> So they claim the majority of the water is ground water and also that it is due to climate change. But I thought I've seen other studies talking about how ground water is being depleted at a higher rate than it could be replaced, even using historical averages. This sounds more like a population/industrialization issue than a climate issue. I'm not sure I understand where you see a contradiction. Land areas are usi…

[dead]

Re: Shrinking freshwater availability increasing land contribution to sea level rise

#20

Post by causal »

jfengel wrote: post #2

Unlike climate change, this is a self correcting problem. We'll tap the last of the fresh water, and then no more sea level rise (from that source). Problem solved, once and for all.

Solutions that include mass die-off of human populations are generally considered incomplete
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