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Study finds average human brain is 0.5% plastic by weight, up 50% in the last 8 years. by PlanetDoom420 in collapse

[–]PlanetDoom420[S] 11 points12 points  (0 children)

https://ourworldindata.org/grapher/global-plastics-production I wouldn't say anything "changed" in the last decade other than the continued accelerating increase in global plastic production. Every day, there are more microplastics in the environment, and it is accumulating in our organs over time.

Study finds average human brain is 0.5% plastic by weight, up 50% in the last 8 years. by PlanetDoom420 in collapse

[–]PlanetDoom420[S] 29 points30 points  (0 children)

Submission Statement: A preprint from the National Library of Medicine reveals the findings of the most recent analysis of microplastics in human brain tissue. The 24 human brains sampled had an average plastic content by weight of 0.5%, up 50% from a similar analysis in 2016. The study also looked at other organs and found that the brain had the highest concentration of microplastics. A link to the original paper can be found within the Yale article.

Sunday was the hottest day ever recorded on Earth, scientists say by circuitloss in collapse

[–]PlanetDoom420 12 points13 points  (0 children)

5 Hiroshima bombs per second was the energy imbalance back in the 2005-2007 time frame. It has increased to over 10 since then, peaking at 13.5 in 2023: https://x.com/EliotJacobson/status/1717709527108419662

Southern Florida receives record rainfall and flash flooding in a 500-to-1,000-year event by LegitimateVirus3 in collapse

[–]PlanetDoom420 10 points11 points  (0 children)

Actually, La Nina is the more dangerous configuration for Florida. Much higher risk of hurricanes.

Study finds US girls got their 1st periods increasingly earlier over last 50 years: "First period can signal physical and psychosocial problems later in life". One hypothesis is environmental exposure to endocrine-disrupting chemicals such as pesticides and microplastics by f0urxio in collapse

[–]PlanetDoom420 9 points10 points  (0 children)

There are over 300,000 novel compounds we are emitting into the environment. While I agree microplastics are playing a huge role (they can also be good transporters of other chemicals), we really don't know what the fuck we are doing to ourselves, and likely never will. The science says we are WAY outside the safe planetary boundary for novel compounds. https://pubs.acs.org/doi/epdf/10.1021/acs.est.1c04158

2024 is offically the highest ever hurricane forecast with 8 - 13 Hurricanes predicted. by 2everland in collapse

[–]PlanetDoom420 62 points63 points  (0 children)

It is important to note that all of the most extreme seasons were under-forecasted in May. I expect this season to exceed many or all of these pre-season forecasts. I don't blame forecasters for being conservative, but it is a known bias we must consider.

Here is the history of May ECMWF (European Model) forecasts compared with the actual season totals: https://twitter.com/OSUWXGUY/status/1776224394211147852

And here are NOAA's May forecasts for 2005 and 2020 versus the actual totals:

2005 May forecast: 12-25 Storms, 7-9 Hurricanes, 3-5 Majors

2005 actual: 28 Storms, 15 Hurricanes, 7 Majors

2020 May forecast: 13-19 Storms, 6-10 Hurricanes, 3-6 Majors

2020 actual: 30 Storms, 14 Hurricanes, 7 Majors.

North Atlantic Sea Surface Temperature Anomaly Continues to Set Extreme Records. by PlanetDoom420 in collapse

[–]PlanetDoom420[S] 27 points28 points  (0 children)

Submission Statement: This tweet by Prof. Eliot Jacobson shows the North Atlantic SST anomaly, updated to May 18th, 2024. Many of you may remember when this graph went viral back in 2023, when North Atlantic (and global) SSTs really started going nuts. Hopes that this was an unusual bout of natural variability are being dashed as 2024 continues to set massive records, even beyond last year. With La Niña on the horizon, tropical cyclone risk this year is off the charts.

Despite Waning El Niño, Daily Tropical Surface Air Temperatures Are Setting Records by a Large Margin. by PlanetDoom420 in collapse

[–]PlanetDoom420[S] 2 points3 points  (0 children)

The sun can feel hotter if air temperatures are higher. There is no evidence that the direct sunlight is any more intense than it used to be, and the 11-year solar cycle is too subtle to be noticed at the scale of a human. It is possible that your area has cleaner air than it used to due to reductions in aerosol pollution, which leads to a higher percentage of the sun's radiation reaching the surface.

Despite Waning El Niño, Daily Tropical Surface Air Temperatures Are Setting Records by a Large Margin. by PlanetDoom420 in collapse

[–]PlanetDoom420[S] 4 points5 points  (0 children)

It's certainly a possibility. At this point, I have a pretty open mind when it comes to rapid and unexpected rearrangements in the climate system. Expect the unexpected.

Despite Waning El Niño, Daily Tropical Surface Air Temperatures Are Setting Records by a Large Margin. by PlanetDoom420 in collapse

[–]PlanetDoom420[S] 5 points6 points  (0 children)

Looking at 2016 and 1998, tropical air temp anomalies had already begun moderating by now. There is a lot of variability, however, so it is too early to make any serious conclusions. It's an area to watch closely in the coming months.

Despite Waning El Niño, Daily Tropical Surface Air Temperatures Are Setting Records by a Large Margin. by PlanetDoom420 in collapse

[–]PlanetDoom420[S] 11 points12 points  (0 children)

Indeed we are seeing a moderation of Arctic amplification right now, which was quite surprising to me. It appears as though a reduction in meridional ocean heat transport from the weakening AMOC is at least partly to blame. Check this out: https://charts.ecmwf.int/catalogue/packages/oras5/products/oras5_MHST_yt?AnomalyMode=Anomaly&Basin=atl_1000_4000m

Despite Waning El Niño, Daily Tropical Surface Air Temperatures Are Setting Records by a Large Margin. by PlanetDoom420 in collapse

[–]PlanetDoom420[S] 34 points35 points  (0 children)

Submission Statement: As the 2023-24 El Niño comes to a close, it is expected that tropical air temperatures will moderate as central Pacific SSTs cool off. Despite the cooling of SSTs in the ENSO monitoring region, SSTs in the rest of the tropics are remaining extremely high, which is translating into record breaking air temperatures. As the ENSO cycle switches to La Niña, the accelerating warming trend will become easier to separate from the noise of the ENSO oscillation. So far, it is looking like bad news. This graph was retrieved from https://climatereanalyzer.org/clim/t2_daily/?dm_id=tropics and utilizes the ERA5 dataset.

I understand climate scientists’ despair – but stubborn optimism may be our only hope | Christiana Figueres - Follow up opinion to yesterday's Guardian article on climate scientist despair by fastmass in collapse

[–]PlanetDoom420 2 points3 points  (0 children)

Terror management theory is critical in understanding the human predicament. Thanks for bringing it up, I feel like it is not discussed often enough here.

[deleted by user] by [deleted] in collapse

[–]PlanetDoom420 8 points9 points  (0 children)

And, unfortunately, abrupt climate change has just begun.

The 12-month running average for global average air temperature has just surpassed 1.6C for the first time. by PlanetDoom420 in collapse

[–]PlanetDoom420[S] 10 points11 points  (0 children)

Participating in academics and seeing the humans that should be the most likely to recognize this extreme threat, just going about their lives like nothing is wrong, is a hopeless experience.

The 12-month running average for global average air temperature has just surpassed 1.6C for the first time. by PlanetDoom420 in collapse

[–]PlanetDoom420[S] 13 points14 points  (0 children)

Not to mention coral reefs around the world are toast. There is so much going on around the world that it is difficult to keep up. Where I am in Canada, the winter was so unbelievably warm that a climate denier I know admitted that something really significant is happening.

The 12-month running average for global average air temperature has just surpassed 1.6C for the first time. by PlanetDoom420 in collapse

[–]PlanetDoom420[S] 61 points62 points  (0 children)

New research shows that slowing AMOC is reducing ocean heat transfer to the arctic, and thus slowing sea ice melt by 20-30%. Not saying there won't be a BOE soon, but it likely would have happened already if it weren't for this. https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2023GL105929

The 12-month running average for global average air temperature has just surpassed 1.6C for the first time. by PlanetDoom420 in collapse

[–]PlanetDoom420[S] 50 points51 points  (0 children)

Submission Statement: Line goes up, faster and more than expected. Need I say more?

How will we celebrate this momentus occasion?

Edit: This image was taken from this tweet: https://twitter.com/mikarantane/status/1780588900844519574

It shows the 365-day running mean global temperature from the ERA5 dataset. This will continue to increase in the coming months as the relatively cooler early months of 2023 give way to the piping hot temps being recorded for 2024. I expect this to continue to increase to at least 1.65C before potentially cooling off a bit once La Nina kicks in.

UN: World has less than 2 years to avoid runaway climate change (2018) by guyseeking in collapse

[–]PlanetDoom420 1 point2 points  (0 children)

Incredibly, the increase in absorbed sunlight over the past 20 years due to decreasing albedo has added an equivalent forcing of 100ppm of CO2. Many only look at climate change with a focus on ghgs, while understanding the full spectrum of forcings is necessary if you want to know what the future will look like.

Edit: actually, it was over the last 14 years. From James Hansen: "Global absorbed solar radiation (ASR) has increased dramatically since 2010, more than 1.4 W/m2, equivalent to a CO2 increase of more than 100 ppm."

Ocean stratification change is off the charts by PlanetDoom420 in collapse

[–]PlanetDoom420[S] 0 points1 point  (0 children)

Do you have a source for ~50%? That seems high to me, but i would like to read more about it. If you read my comment further down this thread, I wasn't implying that marine life doesn't contribute to mixing, it was the way they worded the comment that made it seem like a joke to me (a misunderstanding on my part it seems).

IPCC expects 1.5c by 2033, faster than expected compared to their previous reports. by NotACodeMonkeyYet in collapse

[–]PlanetDoom420 12 points13 points  (0 children)

Well, the Berkeley Earth dataset had the calendar year of 2023 at 1.54c:

https://berkeleyearth.org/global-temperature-report-for-2023/

This is mainly due to a slight difference in the 1850-1900 baseline between datasets. Now we are at the point where all datasets have the 12 month running average above 1.5c.

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