Rate of Ocean Warming Has Nearly Doubled Over Two Decades, Study Says

Are you a Gorebot? A Denier? Let's mix it up here and figure this issue out!
User avatar
barrysoetoro
Ayatollah of Rock-n-Rolla
Posts: 15720
Joined: Fri Sep 05, 2014 7:55 pm
x 32

Re: Rate of Ocean Warming Has Nearly Doubled Over Two Decades, Study Says

Post by barrysoetoro » Wed Apr 26, 2017 6:06 pm

evilconempire wrote:
Wed Apr 26, 2017 11:57 am
barrysoetoro wrote:
Wed Apr 26, 2017 11:56 am
evilconempire wrote:
Wed Apr 26, 2017 11:51 am
barrysoetoro wrote:
Wed Apr 26, 2017 11:45 am
evilconempire wrote:
Mon Mar 13, 2017 1:31 pm
The world's oceans have warmed at twice the rate of previous decades and the extra heat has reached deeper waters, finds data stretching back to 1960.
BY BOB BERWYN, INSIDECLIMATE NEWS
MAR 11, 2017

The rate of ocean warming has nearly doubled since 1992 compared with the previous three decades. And the warming has reached deeper waters, scientists reported Friday.

The findings are important because the world's oceans provide one of the best records of the excess energy trapped on Earth by increased greenhouse gases, largely from the burning of fossil fuels. As the seas heat up from climate change, the water expands and rises, causing coastal flooding and, in Antarctica, ice shelves to disintegrate.


The researchers, from NOAA, the National Center for Atmospheric Research, the University of St. Thomas and the Chinese Academy of Sciences, found that between 1960 and 2015 total ocean warming was 13 percent greater than the most recent estimate by the Intergovernmental Panel on Climate Change (IPCC), whose periodic reviews influence the actions of governments.

After 1992 the rate at which the oceans warmed nearly doubled. Most of the warming is in the tropical Atlantic and Pacific Oceans, as well as the Southern Ocean, surrounding Antarctica.

Image

According to the study, ocean warming now accounts for as much as 50 percent of global sea level rise. That's compared to 30 to 40 percent estimated by the IPCC and other studies, said co-author Kevin Trenberth, a climate scientist with the National Center for Atmospheric Research.

"This directly affects our understanding of sea level," Trenberth said. "And the regional information is critical for climate forecasts and understanding future global warming impacts."

The researchers used data from a network of 3,500 robotic floats that measure ocean temperatures and salinity to a depth of 2,000 meters. The Argo floats, operated by the World Climate Research Program, were first used in 2000. About 800 floats are now deployed every year, widely dispersed across the world's oceans.

The readings helped the scientists correct and validate temperature records from older, less reliable measurements and also enabled them to fill in gaps in geography and time, creating a "remarkably accurate record going back to 1960," according to Trenberth.

They found that the warming accelerated in the mid-1970s. In the 1990s, the warming spread to deeper waters, from 700 to 2,000 meters. The biggest increases in ocean heat content were in those deeper layers, showing "that the deep ocean has played an increasingly important role in the ocean energy budget since 1998," according to the study. The Atlantic Ocean heat content increase was about 3.5 times greater than the Pacific, despite being less than half the size.

"The Southern Ocean seems to be warming as much or more as just about anywhere," Trenberth explained. "Strong winds in the region play a key role. They pull the surface water away from Antarctica and push the warmer water down. That creates a return flow of warmer, saltier water toward Antarctica, where it's eroding ice shelves from beneath."

The world's oceans absorb more than 90 percent of the heat trapped by greenhouse gases, storing it for centuries. Eventually some of the heat is released to the atmosphere and warms adjacent land masses.

The ocean warming directly influences ocean ecosystems and seasonal currents.

"Higher sea surface temperatures are continually reinforced by the extra sub-surface heat, and hence the ocean influences surface weather and climate especially through more intense rains," the study said. Ocean warming also strengthened the 2015-2016 El Niño and contributed to record global heat in 2016. "The result was an all time record hurricane season in 2015 and record heat-waves, droughts and wildfires around the world."

In some areas, the heat build-up is forming a dense layer of oxygen-poor surface water, which affects ocean organisms like plankton. That layer prevents cooler, nutrient-rich water from reaching the surface.

The increased warming in deeper waters is a particular concern for marine life, said Stephanie Henson, a senior scientist at the UK's National Oceanography Centre.

"Anything contributing to ocean warming will affect marine ecosystems," said Henson, who co-authored a March 7 study in Nature Communications on global warming impacts to ocean life. Her research found that global warming will affect 86 percent of the world's oceans by 2050 if greenhouse gas emissions aren't dramatically cut soon.

The two studies are not directly related, but the deeper warming tracked by Trenberth's team is "interesting for humans from a food point of view," Henson said. Large tuna and other commercially valuable fish, as well as keystone species like sharks and whales, spend parts of their lives in that zone, where temperatures have generally been stable for thousands of years.
So what are you doing about this? Are you driving an electric car? Are you walking everywhere?
A lot
Sorry, blogging about it doesn't count.

You sure are sensitive to this subject. I just posted it, and two seconds later there's an answer. I detect a lot of butt hurt in you.
I don't blog.

If that helps you feel better about yourself then I'm okay with it.
"or something similar".
0 x
☪ "I am a conservative. One that understands science, which to the uneducated, read you, makes me seem like a liberal", evilcommie

User avatar
evilconempire
Ayatollah of Rock-n-Rolla
Posts: 16734
Joined: Thu Sep 04, 2014 7:25 am
x 69

Post by evilconempire » Wed Apr 26, 2017 6:45 pm

barrysoetoro wrote:
Wed Apr 26, 2017 6:05 pm
evilconempire wrote:
Tue Mar 14, 2017 12:32 pm
chucky wrote:
Tue Mar 14, 2017 12:30 pm
evilconempire wrote:
Tue Mar 14, 2017 12:27 pm
chucky wrote:
Tue Mar 14, 2017 12:25 pm
evilconempire wrote:
Tue Mar 14, 2017 12:23 pm
chucky wrote:
Tue Mar 14, 2017 12:20 pm
evilconempire wrote:
Tue Mar 14, 2017 12:12 pm
chucky wrote:
Tue Mar 14, 2017 12:10 pm

Warmer temperstures are not detrimental to our species as a whole.
False. Luckily we have the ability to make changes that are not detrimental to our species.
Our species will not become extinct because of a warmer planet. It may inconvience certain individuals. Global warming has helped the population of the human species to flourish and rise tremendously in the last 100 years.

Image
Yes, it very well could become extinct. I've listed the numerous reasons why.

You're extrapolating again.
Humans are thriving as never before. Technology will make it easy to deal with small temperature changes . Warmer has always been better for humanity in the past. Warm climates are good for most species.
You're wrong, but I'll never convince of that. Get your last word in.
Humanity isn't thriving right now ? Technology can't deal with climate change ? Man didn't thrive and move forward in warmer climates in the past ? How am I wrong ?
That man will not become extinct due to our rapidly warming planet.
Lol!!!!!!!!!!!!

WHEN, WEATHER CHANNEL BOY????????????????
We don't know exactly when, but the outcome is certain
0 x
"That Canadian HERO did what the world should do, but not only to the FILTHY muslims but the libturd democrats also!!" - Illeatyourdates

User avatar
barrysoetoro
Ayatollah of Rock-n-Rolla
Posts: 15720
Joined: Fri Sep 05, 2014 7:55 pm
x 32

Post by barrysoetoro » Wed Apr 26, 2017 9:25 pm

evilconempire wrote:
Wed Apr 26, 2017 11:57 am
barrysoetoro wrote:
Wed Apr 26, 2017 11:56 am
evilconempire wrote:
Wed Apr 26, 2017 11:51 am
barrysoetoro wrote:
Wed Apr 26, 2017 11:45 am
evilconempire wrote:
Mon Mar 13, 2017 1:31 pm
The world's oceans have warmed at twice the rate of previous decades and the extra heat has reached deeper waters, finds data stretching back to 1960.
BY BOB BERWYN, INSIDECLIMATE NEWS
MAR 11, 2017

The rate of ocean warming has nearly doubled since 1992 compared with the previous three decades. And the warming has reached deeper waters, scientists reported Friday.

The findings are important because the world's oceans provide one of the best records of the excess energy trapped on Earth by increased greenhouse gases, largely from the burning of fossil fuels. As the seas heat up from climate change, the water expands and rises, causing coastal flooding and, in Antarctica, ice shelves to disintegrate.




Image

According to the study, ocean warming now accounts for as much as 50 percent of global sea level rise. That's compared to 30 to 40 percent estimated by the IPCC and other studies, said co-author Kevin Trenberth, a climate scientist with the National Center for Atmospheric Research.

"This directly affects our understanding of sea level," Trenberth said. "And the regional information is critical for climate forecasts and understanding future global warming impacts."

The researchers used data from a network of 3,500 robotic floats that measure ocean temperatures and salinity to a depth of 2,000 meters. The Argo floats, operated by the World Climate Research Program, were first used in 2000. About 800 floats are now deployed every year, widely dispersed across the world's oceans.

The readings helped the scientists correct and validate temperature records from older, less reliable measurements and also enabled them to fill in gaps in geography and time, creating a "remarkably accurate record going back to 1960," according to Trenberth.

They found that the warming accelerated in the mid-1970s. In the 1990s, the warming spread to deeper waters, from 700 to 2,000 meters. The biggest increases in ocean heat content were in those deeper layers, showing "that the deep ocean has played an increasingly important role in the ocean energy budget since 1998," according to the study. The Atlantic Ocean heat content increase was about 3.5 times greater than the Pacific, despite being less than half the size.

"The Southern Ocean seems to be warming as much or more as just about anywhere," Trenberth explained. "Strong winds in the region play a key role. They pull the surface water away from Antarctica and push the warmer water down. That creates a return flow of warmer, saltier water toward Antarctica, where it's eroding ice shelves from beneath."

The world's oceans absorb more than 90 percent of the heat trapped by greenhouse gases, storing it for centuries. Eventually some of the heat is released to the atmosphere and warms adjacent land masses.

The ocean warming directly influences ocean ecosystems and seasonal currents.

"Higher sea surface temperatures are continually reinforced by the extra sub-surface heat, and hence the ocean influences surface weather and climate especially through more intense rains," the study said. Ocean warming also strengthened the 2015-2016 El Niño and contributed to record global heat in 2016. "The result was an all time record hurricane season in 2015 and record heat-waves, droughts and wildfires around the world."

In some areas, the heat build-up is forming a dense layer of oxygen-poor surface water, which affects ocean organisms like plankton. That layer prevents cooler, nutrient-rich water from reaching the surface.

The increased warming in deeper waters is a particular concern for marine life, said Stephanie Henson, a senior scientist at the UK's National Oceanography Centre.

"Anything contributing to ocean warming will affect marine ecosystems," said Henson, who co-authored a March 7 study in Nature Communications on global warming impacts to ocean life. Her research found that global warming will affect 86 percent of the world's oceans by 2050 if greenhouse gas emissions aren't dramatically cut soon.

The two studies are not directly related, but the deeper warming tracked by Trenberth's team is "interesting for humans from a food point of view," Henson said. Large tuna and other commercially valuable fish, as well as keystone species like sharks and whales, spend parts of their lives in that zone, where temperatures have generally been stable for thousands of years.
So what are you doing about this? Are you driving an electric car? Are you walking everywhere?
A lot
Sorry, blogging about it doesn't count.

You sure are sensitive to this subject. I just posted it, and two seconds later there's an answer. I detect a lot of butt hurt in you.
I don't blog.

If that helps you feel better about yourself then I'm okay with it.

blog
bläɡ/
noun

1. a regularly updated website (aibafs.net) or web page, typically one run by an individual (Pete) or small group, that is written in an informal or conversational style.
0 x
☪ "I am a conservative. One that understands science, which to the uneducated, read you, makes me seem like a liberal", evilcommie

User avatar
barrysoetoro
Ayatollah of Rock-n-Rolla
Posts: 15720
Joined: Fri Sep 05, 2014 7:55 pm
x 32

Post by barrysoetoro » Wed Apr 26, 2017 9:25 pm

evilconempire wrote:
Wed Apr 26, 2017 6:45 pm
barrysoetoro wrote:
Wed Apr 26, 2017 6:05 pm
evilconempire wrote:
Tue Mar 14, 2017 12:32 pm
chucky wrote:
Tue Mar 14, 2017 12:30 pm
evilconempire wrote:
Tue Mar 14, 2017 12:27 pm
chucky wrote:
Tue Mar 14, 2017 12:25 pm
evilconempire wrote:
Tue Mar 14, 2017 12:23 pm
chucky wrote:
Tue Mar 14, 2017 12:20 pm
evilconempire wrote:
Tue Mar 14, 2017 12:12 pm
chucky wrote:
Tue Mar 14, 2017 12:10 pm

Warmer temperstures are not detrimental to our species as a whole.
False. Luckily we have the ability to make changes that are not detrimental to our species.
Our species will not become extinct because of a warmer planet. It may inconvience certain individuals. Global warming has helped the population of the human species to flourish and rise tremendously in the last 100 years.

Image
Yes, it very well could become extinct. I've listed the numerous reasons why.

You're extrapolating again.
Humans are thriving as never before. Technology will make it easy to deal with small temperature changes . Warmer has always been better for humanity in the past. Warm climates are good for most species.
You're wrong, but I'll never convince of that. Get your last word in.
Humanity isn't thriving right now ? Technology can't deal with climate change ? Man didn't thrive and move forward in warmer climates in the past ? How am I wrong ?
That man will not become extinct due to our rapidly warming planet.
Lol!!!!!!!!!!!!

WHEN, WEATHER CHANNEL BOY????????????????
We don't know exactly when, but the outcome is certain
Oh, come on. Indulge me. 10 years? 100? It's never next year, it's always decades from now.
0 x
☪ "I am a conservative. One that understands science, which to the uneducated, read you, makes me seem like a liberal", evilcommie

User avatar
evilconempire
Ayatollah of Rock-n-Rolla
Posts: 16734
Joined: Thu Sep 04, 2014 7:25 am
x 69

Post by evilconempire » Thu Apr 27, 2017 7:27 am

barrysoetoro wrote:
Wed Apr 26, 2017 9:25 pm
evilconempire wrote:
Wed Apr 26, 2017 11:57 am
barrysoetoro wrote:
Wed Apr 26, 2017 11:56 am
evilconempire wrote:
Wed Apr 26, 2017 11:51 am
barrysoetoro wrote:
Wed Apr 26, 2017 11:45 am
evilconempire wrote:
Mon Mar 13, 2017 1:31 pm
The world's oceans have warmed at twice the rate of previous decades and the extra heat has reached deeper waters, finds data stretching back to 1960.
BY BOB BERWYN, INSIDECLIMATE NEWS
MAR 11, 2017

The rate of ocean warming has nearly doubled since 1992 compared with the previous three decades. And the warming has reached deeper waters, scientists reported Friday.

The findings are important because the world's oceans provide one of the best records of the excess energy trapped on Earth by increased greenhouse gases, largely from the burning of fossil fuels. As the seas heat up from climate change, the water expands and rises, causing coastal flooding and, in Antarctica, ice shelves to disintegrate.




Image

According to the study, ocean warming now accounts for as much as 50 percent of global sea level rise. That's compared to 30 to 40 percent estimated by the IPCC and other studies, said co-author Kevin Trenberth, a climate scientist with the National Center for Atmospheric Research.

"This directly affects our understanding of sea level," Trenberth said. "And the regional information is critical for climate forecasts and understanding future global warming impacts."

The researchers used data from a network of 3,500 robotic floats that measure ocean temperatures and salinity to a depth of 2,000 meters. The Argo floats, operated by the World Climate Research Program, were first used in 2000. About 800 floats are now deployed every year, widely dispersed across the world's oceans.

The readings helped the scientists correct and validate temperature records from older, less reliable measurements and also enabled them to fill in gaps in geography and time, creating a "remarkably accurate record going back to 1960," according to Trenberth.

They found that the warming accelerated in the mid-1970s. In the 1990s, the warming spread to deeper waters, from 700 to 2,000 meters. The biggest increases in ocean heat content were in those deeper layers, showing "that the deep ocean has played an increasingly important role in the ocean energy budget since 1998," according to the study. The Atlantic Ocean heat content increase was about 3.5 times greater than the Pacific, despite being less than half the size.

"The Southern Ocean seems to be warming as much or more as just about anywhere," Trenberth explained. "Strong winds in the region play a key role. They pull the surface water away from Antarctica and push the warmer water down. That creates a return flow of warmer, saltier water toward Antarctica, where it's eroding ice shelves from beneath."

The world's oceans absorb more than 90 percent of the heat trapped by greenhouse gases, storing it for centuries. Eventually some of the heat is released to the atmosphere and warms adjacent land masses.

The ocean warming directly influences ocean ecosystems and seasonal currents.

"Higher sea surface temperatures are continually reinforced by the extra sub-surface heat, and hence the ocean influences surface weather and climate especially through more intense rains," the study said. Ocean warming also strengthened the 2015-2016 El Niño and contributed to record global heat in 2016. "The result was an all time record hurricane season in 2015 and record heat-waves, droughts and wildfires around the world."

In some areas, the heat build-up is forming a dense layer of oxygen-poor surface water, which affects ocean organisms like plankton. That layer prevents cooler, nutrient-rich water from reaching the surface.

The increased warming in deeper waters is a particular concern for marine life, said Stephanie Henson, a senior scientist at the UK's National Oceanography Centre.

"Anything contributing to ocean warming will affect marine ecosystems," said Henson, who co-authored a March 7 study in Nature Communications on global warming impacts to ocean life. Her research found that global warming will affect 86 percent of the world's oceans by 2050 if greenhouse gas emissions aren't dramatically cut soon.

The two studies are not directly related, but the deeper warming tracked by Trenberth's team is "interesting for humans from a food point of view," Henson said. Large tuna and other commercially valuable fish, as well as keystone species like sharks and whales, spend parts of their lives in that zone, where temperatures have generally been stable for thousands of years.
So what are you doing about this? Are you driving an electric car? Are you walking everywhere?
A lot
Sorry, blogging about it doesn't count.

You sure are sensitive to this subject. I just posted it, and two seconds later there's an answer. I detect a lot of butt hurt in you.
I don't blog.

If that helps you feel better about yourself then I'm okay with it.

blog
bläɡ/
noun

1. a regularly updated website (aibafs.net) or web page, typically one run by an individual (Pete) or small group, that is written in an informal or conversational style.
"An Internet forum, or message board, is an online discussion site where people can hold conversations in the form of posted messages. They differ from chat rooms in that messages are often longer than one line of text, and are at least temporarily archived."
0 x
"That Canadian HERO did what the world should do, but not only to the FILTHY muslims but the libturd democrats also!!" - Illeatyourdates

User avatar
evilconempire
Ayatollah of Rock-n-Rolla
Posts: 16734
Joined: Thu Sep 04, 2014 7:25 am
x 69

Post by evilconempire » Thu Apr 27, 2017 7:28 am

barrysoetoro wrote:
Wed Apr 26, 2017 9:25 pm
evilconempire wrote:
Wed Apr 26, 2017 6:45 pm
barrysoetoro wrote:
Wed Apr 26, 2017 6:05 pm
evilconempire wrote:
Tue Mar 14, 2017 12:32 pm
chucky wrote:
Tue Mar 14, 2017 12:30 pm
evilconempire wrote:
Tue Mar 14, 2017 12:27 pm
chucky wrote:
Tue Mar 14, 2017 12:25 pm
evilconempire wrote:
Tue Mar 14, 2017 12:23 pm
chucky wrote:
Tue Mar 14, 2017 12:20 pm
evilconempire wrote:
Tue Mar 14, 2017 12:12 pm


False. Luckily we have the ability to make changes that are not detrimental to our species.
Our species will not become extinct because of a warmer planet. It may inconvience certain individuals. Global warming has helped the population of the human species to flourish and rise tremendously in the last 100 years.

Image
Yes, it very well could become extinct. I've listed the numerous reasons why.

You're extrapolating again.
Humans are thriving as never before. Technology will make it easy to deal with small temperature changes . Warmer has always been better for humanity in the past. Warm climates are good for most species.
You're wrong, but I'll never convince of that. Get your last word in.
Humanity isn't thriving right now ? Technology can't deal with climate change ? Man didn't thrive and move forward in warmer climates in the past ? How am I wrong ?
That man will not become extinct due to our rapidly warming planet.
Lol!!!!!!!!!!!!

WHEN, WEATHER CHANNEL BOY????????????????
We don't know exactly when, but the outcome is certain
Oh, come on. Indulge me. 10 years? 100? It's never next year, it's always decades from now.
Too many variables. We only know that we are headed in that direction
0 x
"That Canadian HERO did what the world should do, but not only to the FILTHY muslims but the libturd democrats also!!" - Illeatyourdates

User avatar
DallasDimeBags
Heir Presumptive
Posts: 2200
Joined: Sat Sep 06, 2014 10:25 am
x 71

Post by DallasDimeBags » Sat Apr 29, 2017 1:56 pm

evilconempire wrote:
Mon Mar 13, 2017 1:31 pm
The world's oceans have warmed at twice the rate of previous decades and the extra heat has reached deeper waters, finds data stretching back to 1960.
BY BOB BERWYN, INSIDECLIMATE NEWS
MAR 11, 2017

The rate of ocean warming has nearly doubled since 1992 compared with the previous three decades. And the warming has reached deeper waters, scientists reported Friday.

The findings are important because the world's oceans provide one of the best records of the excess energy trapped on Earth by increased greenhouse gases, largely from the burning of fossil fuels. As the seas heat up from climate change, the water expands and rises, causing coastal flooding and, in Antarctica, ice shelves to disintegrate.

"From this [study] we can better understand the effects of natural and man-made variability to the climate system," said co-author Tim Boyer of NOAA's Ocean Climate Laboratory. "Decision-makers can gauge what needs to be done to ameliorate the situation, or, if not that, to plan for the consequences of the excess heat." The study was published in the journal Science Advances.

The researchers, from NOAA, the National Center for Atmospheric Research, the University of St. Thomas and the Chinese Academy of Sciences, found that between 1960 and 2015 total ocean warming was 13 percent greater than the most recent estimate by the Intergovernmental Panel on Climate Change (IPCC), whose periodic reviews influence the actions of governments.

After 1992 the rate at which the oceans warmed nearly doubled. Most of the warming is in the tropical Atlantic and Pacific Oceans, as well as the Southern Ocean, surrounding Antarctica.

Image

According to the study, ocean warming now accounts for as much as 50 percent of global sea level rise. That's compared to 30 to 40 percent estimated by the IPCC and other studies, said co-author Kevin Trenberth, a climate scientist with the National Center for Atmospheric Research.

"This directly affects our understanding of sea level," Trenberth said. "And the regional information is critical for climate forecasts and understanding future global warming impacts."

The researchers used data from a network of 3,500 robotic floats that measure ocean temperatures and salinity to a depth of 2,000 meters. The Argo floats, operated by the World Climate Research Program, were first used in 2000. About 800 floats are now deployed every year, widely dispersed across the world's oceans.

The readings helped the scientists correct and validate temperature records from older, less reliable measurements and also enabled them to fill in gaps in geography and time, creating a "remarkably accurate record going back to 1960," according to Trenberth.

They found that the warming accelerated in the mid-1970s. In the 1990s, the warming spread to deeper waters, from 700 to 2,000 meters. The biggest increases in ocean heat content were in those deeper layers, showing "that the deep ocean has played an increasingly important role in the ocean energy budget since 1998," according to the study. The Atlantic Ocean heat content increase was about 3.5 times greater than the Pacific, despite being less than half the size.

"The Southern Ocean seems to be warming as much or more as just about anywhere," Trenberth explained. "Strong winds in the region play a key role. They pull the surface water away from Antarctica and push the warmer water down. That creates a return flow of warmer, saltier water toward Antarctica, where it's eroding ice shelves from beneath."

The world's oceans absorb more than 90 percent of the heat trapped by greenhouse gases, storing it for centuries. Eventually some of the heat is released to the atmosphere and warms adjacent land masses.

The ocean warming directly influences ocean ecosystems and seasonal currents.

Oh no. Whatever will we do? How will we ever survive? How much time do we have left before humans become extinct?
0 x

User avatar
barrysoetoro
Ayatollah of Rock-n-Rolla
Posts: 15720
Joined: Fri Sep 05, 2014 7:55 pm
x 32

Post by barrysoetoro » Mon May 01, 2017 5:23 pm

DallasDimeBags wrote:
Sat Apr 29, 2017 1:56 pm
evilconempire wrote:
Mon Mar 13, 2017 1:31 pm
The world's oceans have warmed at twice the rate of previous decades and the extra heat has reached deeper waters, finds data stretching back to 1960.
BY BOB BERWYN, INSIDECLIMATE NEWS
MAR 11, 2017

The rate of ocean warming has nearly doubled since 1992 compared with the previous three decades. And the warming has reached deeper waters, scientists reported Friday.

The findings are important because the world's oceans provide one of the best records of the excess energy trapped on Earth by increased greenhouse gases, largely from the burning of fossil fuels. As the seas heat up from climate change, the water expands and rises, causing coastal flooding and, in Antarctica, ice shelves to disintegrate.

"From this [study] we can better understand the effects of natural and man-made variability to the climate system," said co-author Tim Boyer of NOAA's Ocean Climate Laboratory. "Decision-makers can gauge what needs to be done to ameliorate the situation, or, if not that, to plan for the consequences of the excess heat." The study was published in the journal Science Advances.

The researchers, from NOAA, the National Center for Atmospheric Research, the University of St. Thomas and the Chinese Academy of Sciences, found that between 1960 and 2015 total ocean warming was 13 percent greater than the most recent estimate by the Intergovernmental Panel on Climate Change (IPCC), whose periodic reviews influence the actions of governments.

After 1992 the rate at which the oceans warmed nearly doubled. Most of the warming is in the tropical Atlantic and Pacific Oceans, as well as the Southern Ocean, surrounding Antarctica.

Image

According to the study, ocean warming now accounts for as much as 50 percent of global sea level rise. That's compared to 30 to 40 percent estimated by the IPCC and other studies, said co-author Kevin Trenberth, a climate scientist with the National Center for Atmospheric Research.

"This directly affects our understanding of sea level," Trenberth said. "And the regional information is critical for climate forecasts and understanding future global warming impacts."

The researchers used data from a network of 3,500 robotic floats that measure ocean temperatures and salinity to a depth of 2,000 meters. The Argo floats, operated by the World Climate Research Program, were first used in 2000. About 800 floats are now deployed every year, widely dispersed across the world's oceans.

The readings helped the scientists correct and validate temperature records from older, less reliable measurements and also enabled them to fill in gaps in geography and time, creating a "remarkably accurate record going back to 1960," according to Trenberth.

They found that the warming accelerated in the mid-1970s. In the 1990s, the warming spread to deeper waters, from 700 to 2,000 meters. The biggest increases in ocean heat content were in those deeper layers, showing "that the deep ocean has played an increasingly important role in the ocean energy budget since 1998," according to the study. The Atlantic Ocean heat content increase was about 3.5 times greater than the Pacific, despite being less than half the size.

"The Southern Ocean seems to be warming as much or more as just about anywhere," Trenberth explained. "Strong winds in the region play a key role. They pull the surface water away from Antarctica and push the warmer water down. That creates a return flow of warmer, saltier water toward Antarctica, where it's eroding ice shelves from beneath."

The world's oceans absorb more than 90 percent of the heat trapped by greenhouse gases, storing it for centuries. Eventually some of the heat is released to the atmosphere and warms adjacent land masses.

The ocean warming directly influences ocean ecosystems and seasonal currents.

Oh no. Whatever will we do? How will we ever survive? How much time do we have left before humans become extinct?
Don't worry, the weather channel boy is doing stuff about it, won't say what exactly though.
0 x
☪ "I am a conservative. One that understands science, which to the uneducated, read you, makes me seem like a liberal", evilcommie

Post Reply

Who is online

Users browsing this forum: No registered users and 1 guest