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22-01-2022, 09:58
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#3661
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Registered User
Join Date: Aug 2017
Location: San Francisco
Boat: Fountaine Pajot, Helia 44 - Hull #16
Posts: 609
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Re: Science & Technology News
Quote:
Originally Posted by newhaul
How about the artificially elevated c14 caused by the nuclear testing it will and I'm sure does skew the numbers . Not to mention from cosmic rays . Which have been elevated for several decades.
Nuclear causes rapid decay of radio isotopes
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The effect of atmospheric testing on C14 has been always known and has been taken into account in the studies that I had read. Yes, cosmic rays do create C14 which I think is how carbon dating is done (ratio of C12 to C14). I did read a study that carbon dating in the future will be more difficult because all the new CO2 released in the last 100 years has created a disconnect in the balance of C12 to C14 (in addition to the atomic testing disconnect). Perhaps folks in the future will come up with a new way to date our civilization.
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23-01-2022, 12:14
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#3662
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Registered User
Join Date: Sep 2008
Location: USA
Posts: 255
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Re: Science & Technology News
NASA GLOBE Cloud Challenge 2022: Clouds in a Changing Climate
https://observer.globe.gov/do-globe-observer/challenges/cloud-challenge-2022
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25-01-2022, 03:53
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#3663
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Senior Cruiser
Join Date: Mar 2003
Location: Thunder Bay, Ontario - 48-29N x 89-20W
Boat: (Cruiser Living On Dirt)
Posts: 49,139
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Re: Science & Technology News
‘Mega iceberg’ releases billions of tonnes of fresh water into ocean
An iceberg, that was once the largest on the planet, dubbed A68a, recently released 152 billion tons of fresh water, close to the sub-Antarctic island of South Georgia, potentially impacting the region’s ecosystem, a study [1] published earlier this month found.
More about ➥ https://www.bas.ac.uk/media-post/a68...er-into-ocean/
[1] “Observing the disintegration of the A68A iceberg from space” ~ by Anne Braakmann-Folgmann et al
Quote:
Highlights
• A68 was the 6th largest iceberg on record when it calved from Larsen-C in July 2017.
• We study its full life cycle using satellite altimetry and satellite imagery.
• Until early 2021 A68A thinned from 235 to 168 m, accounting for 32% of its loss.
• Basal melting peaked at 7.2 m/month in the Northern Scotia Sea.
• The iceberg released 152 Gt of fresh water and nutrients near South Georgia. ...
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Study ➥ https://www.sciencedirect.com/scienc...757?via%3Dihub
__________________
Gord May
"If you didn't have the time or money to do it right in the first place, when will you get the time/$ to fix it?"
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25-01-2022, 03:57
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#3664
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Senior Cruiser
Join Date: Mar 2003
Location: Thunder Bay, Ontario - 48-29N x 89-20W
Boat: (Cruiser Living On Dirt)
Posts: 49,139
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Re: Science & Technology News
Quote:
Originally Posted by ImaginaryNumber
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NASA GLOBE Cloud Challenge 2022: Clouds in a Changing Climate
15 January to 15 February 2022
Did you know that clouds can both warm and cool our planet? Keeping an eye on clouds helps NASA study our climate. We need your help capturing data about clouds where you live! The Global Learning and Observations to Benefit the Environment (GLOBE) Program invites you to take part in our upcoming Cloud Challenge: “Clouds in a Changing Climate.”
Short link to this page: ➥ https://observer.globe.gov/cloud-challenge-2022
__________________
Gord May
"If you didn't have the time or money to do it right in the first place, when will you get the time/$ to fix it?"
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25-01-2022, 04:57
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#3665
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Senior Cruiser
Join Date: Mar 2003
Location: Thunder Bay, Ontario - 48-29N x 89-20W
Boat: (Cruiser Living On Dirt)
Posts: 49,139
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Re: Science & Technology News
Fossils from Newfoundland could rewrite history of squid, octopus
German researchers Anne Hildenbrand and Gregor Austermann, of the University of Heidelberg, announced in Communications Biology [1], that they had discovered cone-shaped fossils, that may well be the remains of the planet's oldest cephalopods, at Bacon Cove, Conception Bay, in a layer of rock 522 million years old.
If they should actually be cephalopods, we would have to backdate the origin of cephalopods into the early Cambrian period, rolling back [by about 30 million years] the origins of cephalopods. That would mean that cephalopods emerged at the very beginning of the evolution of multicellular organisms, during the Cambrian explosion.
The Cambrian period lasted some 56 million years, ending with the beginning of the Ordovician Period, about 485 million years ago.
More research is still needed, to confirm the fossils are indeed the earliest known cephalopods in existence, according to the findings [1], released last March.
[1] “A potential cephalopod from the early Cambrian of eastern Newfoundland, Canada” ~ by Anne Hildenbrand et al
➥ https://www.nature.com/articles/s42003-021-01885-w
__________________
Gord May
"If you didn't have the time or money to do it right in the first place, when will you get the time/$ to fix it?"
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25-01-2022, 09:04
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#3666
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Senior Cruiser
Join Date: Sep 2014
Location: puget sound washington
Boat: 1968 Islander bahama 24 hull 182, 1963 columbia 29 defender. hull # 60
Posts: 12,121
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Re: Science & Technology News
Well me thinks the Tonga eruption will have a noticeable impact on the world temperature.
This is the sulfur dioxide emissions from it .
Covers a heck of a lot of territory and it's not even dispersed yet . ( 5hat will take a couple months or more. Especially if it breaks the equatorial boundry.)
__________________
Non illigitamus carborundum
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25-01-2022, 12:44
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#3667
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Senior Cruiser
Join Date: Mar 2003
Location: Thunder Bay, Ontario - 48-29N x 89-20W
Boat: (Cruiser Living On Dirt)
Posts: 49,139
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Re: Science & Technology News
Quote:
Originally Posted by newhaul
Well me thinks the Tonga eruption will have a noticeable impact on the world temperature...
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Once again, your opinion is at odds with what the scientists, who study these things, think.
For a measurable temperature response to occur, a volcano has to vault a huge quantity of material, on the order of at least 5.0 Teragrams (Tg), which is equivalent to 5 million tons of sulfur dioxide.
Evidently, the Hunga Tonga Hunga Ha'apai volcano emitted only about 0.4 Tg of sulfur dioxide.
“Ash from Tonga volcano eruption reaches record altitude but climate cooling unlikely”
➥ https://www.space.com/tonga-volcano-...t-cool-climate
__________________
Gord May
"If you didn't have the time or money to do it right in the first place, when will you get the time/$ to fix it?"
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25-01-2022, 13:17
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#3668
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Senior Cruiser
Join Date: Sep 2014
Location: puget sound washington
Boat: 1968 Islander bahama 24 hull 182, 1963 columbia 29 defender. hull # 60
Posts: 12,121
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Re: Science & Technology News
Quote:
Originally Posted by GordMay
Once again, your opinion is at odds with what the scientists, who study these things, think.
For a measurable temperature response to occur, a volcano has to vault a huge quantity of material, on the order of at least 5.0 Teragrams (Tg), which is equivalent to 5 million tons of sulfur dioxide.
Evidently, the Hunga Tonga Hunga Ha'apai volcano emitted only about 0.4 Tg of sulfur dioxide.
“Ash from Tonga volcano eruption reaches record altitude but climate cooling unlikely”
➥ https://www.space.com/tonga-volcano-...t-cool-climate
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We shall see
__________________
Non illigitamus carborundum
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25-01-2022, 18:31
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#3669
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Registered User
Join Date: Feb 2006
Posts: 2,768
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Re: Science & Technology News
Why is it ::1. that CO2 from fossil fuels burned by humanoids cause "Global Warming" but CO2 form Volcanic eruptions cause "Global Cooling"???? 2. Has Climate Change from CO fossil fuel burning become a religion?? 3. Where is all the electricity going to come from when most everyone is driving electric cars? Go ahed and give me straight answers-no deflecting or projecting please.
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25-01-2022, 18:41
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#3670
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Registered User
Join Date: Feb 2006
Posts: 2,768
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Re: Science & Technology News
Quote:
Originally Posted by pt49
What about SO2?
It is reported that the amount of SO2 emitted from the Tonga volcanic explosion, combined with the particular weather pattern in play at the time will likely cause a global cooling event for a few years.
There is also a theory that the sunspot activity cycle is causing increased volcanic activity which I must admit is way beyond my education level.
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Hold on sir! Those sunspots actually cause hidden dark shadows that scare the volcanos into burping from scarinest. get with da programy s . jeeze.
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25-01-2022, 18:45
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#3671
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Registered User
Join Date: Feb 2006
Posts: 2,768
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Re: Science & Technology News
Quote:
Originally Posted by Dieseldude
Can't make sense out of the chart. But it does not account for dispersal of water vapor. Since equatorial regions are warmer, H2O vapor is more prevalent there. And since those regions are naturally warmer, H2O has a greater effect there. Can't get away from it, water vapor outranks CO2. Even NASA admits, "Water vapor is also the most important greenhouse gas in the atmosphere."
https://earthobservatory.nasa.gov/gl...YDAL2_M_SKY_WV
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This is why Greenland and Antartica is covered with miles thick ice--they have less "water vapor". lol PS I was in Iceland for 2 weeks in the summer and it rained continuously 24 hours a day. I guess they have "less vapor" .
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25-01-2022, 19:05
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#3672
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Registered User
Join Date: Aug 2017
Location: San Francisco
Boat: Fountaine Pajot, Helia 44 - Hull #16
Posts: 609
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Re: Science & Technology News
Quote:
Originally Posted by geoleo
Why is it ::1. that CO2 from fossil fuels burned by humanoids cause "Global Warming" but CO2 form Volcanic eruptions cause "Global Cooling"???? 2. Has Climate Change from CO fossil fuel burning become a religion?? 3. Where is all the electricity going to come from when most everyone is driving electric cars? Go ahed and give me straight answers-no deflecting or projecting please.
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Volcanic cooling is most often associated with SO2 which forms particulates in the atmosphere not CO2. Those particulates cause light to be reflected back to space rather than getting to the surface which results in temporary cooling. In general, averaged over time volcanic CO2 emissions haven't significantly changed, while CO2 from human activities has.
No religion for me, just simple facts of our situation and the need to find practical solutions.
Hopefully nations will encourage conversion to forms of energy that do not emit CO2 as we transition to electric cars and electric homes. Getting solar panels on roofs of houses that have electric cars is great solution.
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25-01-2022, 19:14
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#3673
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Registered User
Join Date: Feb 2006
Posts: 2,768
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Re: Science & Technology News
Quote:
Originally Posted by AllenRbrts
Volcanic cooling is most often associated with SO2 which forms particulates in the atmosphere not CO2. Those particulates cause light to be reflected back to space rather than getting to the surface which results in temporary cooling. In general, averaged over time volcanic CO2 emissions haven't significantly changed, while CO2 from human activities has.
No religion for me, just simple facts of our situation and the need to find practical solutions.
Hopefully nations will encourage conversion to forms of energy that do not emit CO2 as we transition to electric cars and electric homes. Getting solar panels on roofs of houses that have electric cars is great solution.
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What if you live in a apt bldg or condo and have to park in a parking garage and the bldgs roof is us useable for panels. Plus what if your gone during the day to work and sun goes down? Where comes all the juice ? There are about 300 million vehicles in use in USA...maybe home nuke plants to charge em??. OOORRRR maybe all these coming electric vehicles will come with a spare battery one could hook up to at home or be charged when we gone to worky?? Question:: How much KW would it take to keep half of USA vehicles moving at once on solar/battery power??? Come on you engrs!!
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25-01-2022, 19:34
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#3674
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Registered User
Join Date: Nov 2018
Location: Darwin, Australia.
Boat: Alan Payne "Koonya" design 39'
Posts: 200
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Re: Science & Technology News
The obvious answer is Nuclear Power.
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26-01-2022, 02:21
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#3675
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Senior Cruiser
Join Date: Mar 2003
Location: Thunder Bay, Ontario - 48-29N x 89-20W
Boat: (Cruiser Living On Dirt)
Posts: 49,139
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Re: Science & Technology News
Quote:
Originally Posted by newhaul
Well me thinks the Tonga eruption will have a noticeable impact on the world temperature...
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Will you be able to differentiate [identify & quantify] the difference between the Volcanic impact[s], and the Solar Minimum impact[s]?
__________________
Gord May
"If you didn't have the time or money to do it right in the first place, when will you get the time/$ to fix it?"
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