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Den nyeste forskning viser....22-05-2010 08:59
rick_uk
★★★★☆
(1140)
SCIENCE DAILY: Ocean Stored Significant Warming Over Last 16 Years, Study Finds (21/5-10)

"We are seeing the global ocean store more heat than it gives off," said John Lyman, an oceanographer at NOAA's Joint Institute for Marine and Atmospheric Research, who led an international team of scientists


"The ocean is the biggest reservoir for heat in the climate system," said Josh Willis, an oceanographer at NASA's Jet Propulsion Laboratory and one of the scientists who contributed to the study. "So as the planet warms, we're finding that 80 to 90 percent of the increased heat ends up in the ocean."

A warming ocean is a direct cause of global sea level rise, since seawater expands and takes up more space as it heats up. The scientists say that this expansion accounts for about one-third to one-half of global sea level rise.

Combining multiple estimates of heat in the upper ocean -- from the surface to about 2,000 feet down -- the team found a strong multi-year warming trend throughout the world's ocean. According to measurements by an array of autonomous free-floating ocean floats called Argo as well as by earlier devices called expendable bathythermographs or XBTs that were dropped from ships to obtain temperature data, ocean heat content has increased over the last 16 years.



Vh rick

Vi har hørt varslerne. Klokken tikker....Informerede valg.
22-05-2010 09:37
Kosmos
★★★★★
(3989)
Combining multiple estimates of heat in the upper ocean -- from the surface to about 2,000 feet down -- the team found a strong multi-year warming trend throughout the world's ocean

- stakkels Willis, han har det garanteret ikke bedre end godt!

Her er hans udsagn fra 16. april i år:

I think that it is still premature to make claims about the Earth's energy imbalance based on satellite observations and ocean heat content data over ANY period. As with the satellite observations, the ocean heat content data continue to undergo refinement and removal of systematic errors. Since the satellite data are insensitive to the absolute value of the imbalance, they rely on ocean heat content data to estimate it. However, I personally belive that there is not a long enough common period between the satellite observations and the RELIABLE ocean heat content record to make any strong claims about the energy budget. Many people are working on both data sets, however, and I hope that a more reliable comparison will become available soon
Kilde
23-05-2010 11:35
rick_uk
★★★★☆
(1140)
Foskning fra University of Miami, published in "Nature Geoscience"

EUREKALERT: Greenland rapidly rising as ice melt continues (18/5-10)

[Greenland] has....a dense icecap up to 2 km thick that covers much of the island--pressing down the land beneath and lowering its elevation. Now, scientists at the University of Miami say Greenland's ice is melting so quickly that the land underneath is rising at an accelerated pace.

"It's been known for several years that climate change is contributing to the melting of Greenland's ice sheet," Dixon says. "What's surprising, and a bit worrisome, is that the ice is melting so fast that we can actually see the land uplift in response," he says. "Even more surprising, the rise seems to be accelerating, implying that melting is accelerating."

The same process is affecting the islands of Iceland and Svalbard...

"During ice ages and in times of ice accumulation, the ice suppresses the land....When the ice melts, the land rebounds upwards...Our study is consistent with a number of global warming indicators, confirming that ice melt and sea level rise are real and becoming significant."



Vh rick

Vi har hørt varslerne. Klokken tikker....Informerede valg.
23-05-2010 12:12
Kosmos
★★★★★
(3989)
Even more surprising, the rise seems to be accelerating, implying that melting is accelerating

- tja, tjo...syv millimeter på tre år:



Og så er vi jo ved udløbet af en El Nino epoke - jf. kurveforløbet 1997 - 98!
23-05-2010 20:37
rick_uk
★★★★☆
(1140)
Den udløbende El Nino får skyld i meget for tiden.

At ENSO styrer verdens havniveauet...Hmmm....det har jeg ikke hørt før



Vh rick

Vi har hørt varslerne. Klokken tikker....Informerede valg.
24-05-2010 09:34
rick_uk
★★★★☆
(1140)
Re. link til forskningen om den varmende verdenshav ovenfor, er der en kommentar over på RealClimate, bl.a.:

The latest paper is a consensus effort from many of the people involved in the previous work and shows how robust the recent decades warming of the ocean has been. Indeed, the 'best estimate' for the changes in the top 700m seems to be a greater warming than seen in the NODC data and more than even the models were suggesting....

As usual, this is unlikely to be the very last word on the subject, but this is more evidence that the planet is basically behaving as the scientists think it is. And that isn't necessarily good news.



Vh rick

Vi har hørt varslerne. Klokken tikker....Informerede valg.
27-05-2010 15:19
sg17a
★★☆☆☆
(375)
Nyt fra DMI:

Vanddamp i stratosfæren styrer temperaturen.

Mindre vanddamp i stratosfæren har givet mindre drivhuseffekt og derved har temperaturstigningen aftaget

Lyt selv med her:

http://www.dr.dk/P1/klimaogmiljoe/Udsendelser/2010/05/21134543.htm

Ca. 30 minutter inde
28-05-2010 07:09
rick_uk
★★★★☆
(1140)
ENVIRONMENTAL RESEARCH LETTERS:Ancient records confirm Arctic warming due to man (20/5-10)

If Arctic warming continues at its current rate, the Arctic Ocean could have ice-free summers by 2040 or even earlier, modelling studies suggest. The last time the ocean may have had ice-free seasons was around 10,000 years ago, when the region was getting much more sunlight than today due to Earth's orbital fluctuations. By using geological records to piece together the history of Arctic sea ice over the last 50 million years, scientists have shown that the combined magnitude and abruptness of the recent ice loss is likely higher than ever before and can't be explained by any known natural variables.

For the last 11,000 years or so we have been enjoying a relatively warm, low-ice interglacial period, with a gentle cooling as we head towards the next glacial. "From orbital variations, we'd expect the Arctic to continue to slowly cool as it has done so for the past several thousand years, eventually slipping into a new ice age," said Mark Serreze director of the US National Snow and Ice Data Center at the University of Colorado.

But the last 100 years have bucked the trend in a big way. "We've lost about 30% of the summer ice extent and as much as 85% of the multi-year ice volume since the 1970s," Serreze told environmentalresearchweb. And this decrease can't be explained by natural variations alone. "If you ignored our recent atmospheric carbon dioxide rise, the recent reduction in sea ice in the Arctic would look highly anomalous, because it comes at a time when orbits favour extensive sea ice," said Richard Alley from Pennsylvania State University.



Vh rick

Vi har hørt varslerne. Klokken tikker....Informerede valg.
31-05-2010 20:38
rick_uk
★★★★☆
(1140)
THE AGE: Past helps piece together future climate change (31/5-10)

...on the Great Barrier Reef and in the central Pacific, scientists are drilling into coral and surfacing with a picture of the past.

Swing south-east, to the bottom end of New Zealand, and they are collecting samples of old tree rings.

Further south, in eastern Antarctica, century-old ice cores are being dug up, containing oxygen pockets frozen in time.

All of this disparate work will be brought together at the University of Melbourne during the next two days, at an international workshop on filling gaps in understanding of how the Australasian climate has shifted over the past 500 years.

The results will feed into the fifth report of the Intergovernmental Panel on Climate Change, due in 2014.

Recently published work...found a link between increased snowfall in Antarctica and the drought in south-west Western Australia over the past 30 years. The change in pressure systems causing the phenomenon was so far outside normal variations that Dr van Ommen concluded it was likely to have been caused by man-made climate change.

Analysis of cross-discipline research led to the conclusion that the warming could not be explained by natural variation alone and that, without skyrocketing emissions, changes in solar and volcanic activity over the past 50 years would probably have caused the globe to cool.



Vh rick

Vi har hørt varslerne. Klokken tikker....Informerede valg.
03-06-2010 00:13
rick_uk
★★★★☆
(1140)
RESEARCH NEWS: ARCTIC ICE AT LOW POINT COMPARED TO RECENT GEOLOGIC HISTORY (2/6-10)

"The ice loss that we see today -- the ice loss that started in the early 20th Century and sped up during the last 30 years -- appears to be unmatched over at least the last few thousand years," said Leonid Polyak, a research scientist at Byrd Polar Research Center at Ohio State University. Polyak is lead author of the paper and a preceding report that he and his coauthors prepared for the U.S. Climate Change Science Program.

While knowing the loss of surface area of the ice is important, Polyak says that this work can't yet reveal an even more important fact: how the total volume of ice -- thickness as well as surface area -- has changed over time.

"Underneath the surface, the ice can be thick or thin. The newest satellite techniques and field observations allow us to see that the volume of ice is shrinking much faster than its area today. The picture is very troubling. We are losing ice very fast," he said.



Vh rick

Vi har hørt varslerne. Klokken tikker....Informerede valg.
03-06-2010 22:45
alphaomega
☆☆☆☆☆
(42)
rick_UK
Tror du paa alt det du skriver? Mere is i Antarctica skyldes AGW og mindre is i Arctic skyldes AGW. Wow. Det der med isen der smelter paa Groenland er udregnet til at tage omkring 14,000 aar inden Groenland's is har smeltet hvis det fortsaetter som nu. Jeg forstaar der er store vanskeligheder med at etablere Arctic ice volume foer i tiden og nu saa alle de forudsigelser er temmelig taagede. Isen paa Arctic er mere afhaengig af stroem og vandtemperatur og det har ikke saa meget med AGW at goere. Alt mellem himmel og jord skyldes AGW.
03-06-2010 22:53
alphaomega
☆☆☆☆☆
(42)
rick-UK Argo siger
Ocean temperature and heat content

Over the past 50 years, the oceans have absorbed more than 80% of the total heat added to the air/sea/land/cyrosphere climate system (Levitus et al, 2005). As the dominant reservoir for heat, the oceans are critical for measuring the radiation imbalance of the planet and the surface layer of the oceans plays the role of thermostat and heat source/sink for the lower atmosphere.

Domingues et al (2008) and Levitus et al (2009) have recently estimated the multi-decadal upper ocean heat content using best-known corrections to systematic errors in the fall rate of expendable bathythermographs (Wijffels et al, 2008). For the upper 700m, the increase in heat content was 16 x 1022 J since 1961. This is consistent with the comparison by Roemmich and Gilson (2009) of Argo data with the global temperature time-series of Levitus et al (2005), finding a warming of the 0 - 2000 m ocean by 0.06°C since the (pre-XBT) early 1960's.

Saa vi har en 0.06C varmning af havene 0-2000 meter siden 1961. En rigtig katastrofe. Jeg ved at AGW tilhaengerne er desperate efter at finde dette manglende heat content saaledes at de kan sige at der altsaa virkeligt er mere varme her paa jorden end selv HadCru og Giss kan maale. De bliver ved indtil de har overbevist sig selv om at de har fundet det.
08-06-2010 00:48
rick_uk
★★★★☆
(1140)
International Polar Year Oslo Science Conference, Norway: 'Polar Science -- Global Impact'

Indlæg inkluderer bl.a.:

"Weather patterns affect polar sea-ice"

Understanding how polar sea ice responds to global change – whether human induced or as part of a natural process – is really important if scientists are to make accurate predictions about the Earth's future climate. Scientists at British Antarctic Survey (BAS) reveal that while Arctic sea ice has been decreasing at a significant rate over the last 30 years, sea ice around the Antarctic has increased over the same period.

This slight increase can be explained by changing weather patterns caused by the hole in the ozone layer which has shielded the continent from most of the effects of 'global warming', giving a small cooling over the last 30 years.

Sea ice plays a key role in the global environment – reflecting heat from the sun and providing a habitat for marine life. At both poles sea ice cover is at its minimum during summer. However, during the winter freeze in Antarctica this ice cover expands to an area roughly twice the size of Europe. Ranging in thickness from less than a metre to several metres, the ice insulates the warm ocean from the frigid atmosphere above. Satellite images show that since the 1970s the extent of Antarctic sea ice has increased at a rate of 100,000 square kilometres a decade.


Vh rick

Vi har hørt varslerne. Klokken tikker....Informerede valg.
19-06-2010 21:50
rick_uk
★★★★☆
(1140)
SCIENCE DAILY: Ocean Changes May Have Dire Impact on People (19/6-10)

The first comprehensive synthesis on the effects of climate change on the world's oceans has found they are now changing at a rate not seen for several million years.

In an article published June 18 in Science magazine, scientists reveal the growing atmospheric concentrations of man-made greenhouse gases are driving irreversible and dramatic changes to the way the ocean functions, with potentially dire impacts for hundreds of millions of people across the planet.

Professor Ove Hoegh-Guldberg, lead author of the report and Director of The University of Queensland's Global Change Institute, says the findings have enormous implications for mankind, particularly if the trend continues.

He said that the Earth's ocean, which produces half of the oxygen we breathe and absorbs 30% of human-generated CO2, is equivalent to its heart and lungs. "Quite plainly, the Earth cannot do without its ocean. This study, however, shows worrying signs of ill health

He warned that we may soon see "sudden, unexpected changes that have serious ramifications for the overall well-being of humans," including the capacity of the planet to support people. "This is further evidence that we are well on the way to the next great extinction event."

The "fundamental and comprehensive" changes to marine life identified in the report include rapidly warming and acidifying oceans, changes in water circulation and expansion of dead zones within the ocean depths.



Vh rick

Vi har hørt varslerne. Klokken tikker....Informerede valg.
20-06-2010 01:09
Hvalrossen
★☆☆☆☆
(130)
Apropos Guldberg http://wattsupwiththat.com/2010/06/16/oz-report-footy-at-least-has-rules/ Beskrivelserne af manden ligner de isbjørneforskere jeg kender - arrogante stoddere!
20-06-2010 02:44
GLARProfilbillede★★★★☆
(1023)
Hej Hvalrossen

Jeg kan godt forstå, at du har behov for at komme af med varmen (læs køle lidt ned) vi har jo netop 18/6 haft "All over record of warming in Greenland" +25.5 C.
20-06-2010 02:58
Hvalrossen
★☆☆☆☆
(130)
GLAR - du sidder jo også nærmere den smeltende indlandsis end mig. Jf. Sermitsiaq har vi her i Nuuk -2, når vi tager vinden med §.-)
Redigeret d. 20-06-2010 03:00
20-06-2010 14:37
GLARProfilbillede★★★★☆
(1023)
@Hvalrossen

Det undre mig lidt, at ingen overhovedet stiller spørgsmål om rigtigheden af de +25.5 C i Kangerlussuaq.

Så vidt som jeg er orienteret er der tale om en teknisk fejl... ved udskiftning af en temperaturmåler (der havde været opbevaret i en varm bil på vej ud til målestationen)... den estimerede max. temp er i omegnen af +19.5 C hvilket passer godt med årstiden.

mvh
20-06-2010 20:26
rick_uk
★★★★☆
(1140)
SCIENCE DAILY: The Western Mediterranean Has Warmed for More Than a Century (18/6-10)

The longest sequences of temperature and salinity data analyzed (from 1900 to present), have confirmed the gradual warming of the waters of the western Mediterranean. The warming has accelerated since the mid 1970's.

This work, published this May in the Journal of Marine Systems, has reconstructed the longest time series of temperature and salinity in the western Mediterranean, from 1900 to 2008.

In addition, the study shows that the way in which the temperature of the Western Mediterranean deep layer increases is well correlated with the air temperature in the northern hemisphere and with the heat absorbed by the Atlantic Ocean.

Thus, the Western Mediterranean is presented as an excellent indicator of the changes that are occurring in the Earth's climate on a larger scale, and, therefore, the observing systems developed by the IEO and the ICM become very useful tools in the study of climate change.



Vh rick

Vi har hørt varslerne. Klokken tikker....Informerede valg.
21-06-2010 19:26
rick_uk
★★★★☆
(1140)
CICERO: Kopling mellom temperaturen i Arktis og Antarktis (17/6-10)

Temperaturen i Arktis har økt langt mer enn den globale middeltemperaturen de siste 30 år, mens det motsatte er tilfellet i Antarktis. Dette kan, i alle fall delvis, skyldes naturlige svingninger.

Figuren tyder på at menneskeskapt oppvarming i nord siden 1970-tallet er forsterket av den naturlige svingningen i temperaturen i dette området, mens disse effektene i sør har motvirket hverandre. Fortsetter dette mønsteret, vil forholdene om noen år bli motsatt, slik at menneskeskapt og naturlig temperaturendring vil motvirke hverandre i nord, men forsterke hverandre i sør.





Vh rick

Vi har hørt varslerne. Klokken tikker....Informerede valg.
23-06-2010 23:26
Jakob
★★★★★
(5459)
.



@rick_uk


Tak for dit indlæg, selvom det ikke er en opmuntring.
Nu er det slut med at gå og være glad for, at GW i det mindste ikke ser ud til at ramme sydpolen så hårdt.
Om nogle år vender billedet meget sikkert, og så smelter sydpolen amok.

Det må være konklusionen..?




http://www.cicero.uio.no/webnews/?=11399
Citat:
--------------------
Hovedsakelig er dette naturlige svingninger knyttet til endringer i havstrømmene, men det kan være en viss antropogen påvirkning.
--------------------


Hvad omhandler den "antropogene påvirkning" ( menneskeskabt påvirkning ) mon mere konkret i dette tilfælde som årsag til svingninger polerne imellem..?



Billede vedhæftet:
http://www.cicero.uio.no/_includefiles/dbimg/showimg.aspx?scope=webnews&box_id=2&pub_id=11399&big=yes
Tilknyttet billede:


Redigeret d. 23-06-2010 23:27
24-06-2010 00:28
Kosmos
★★★★★
(3989)
Jakob tilknyttede følgende billede:...

- for det afbildede tidsinterval illustrerer dine grafer med fuld tydelighed, at vi stadig er under recovery fra lille istid, og gudskelov for dét!
24-06-2010 06:52
Jakob
★★★★★
(5459)
.




Kosmos skrev:
- for det afbildede tidsinterval illustrerer dine grafer med fuld tydelighed, at vi stadig er under recovery fra lille istid, og gudskelov for dét!


Nå ja, det er jo trist, hvis det bliver koldt. Så hellere en menneskeskabt "recovery", som kan ende med mere end 70 meter havstigning, eller hvad er din pointe..?




.
RE: Sandhed?24-06-2010 08:27
kulden-varmenProfilbillede★★★★★
(2086)
Jakob skrev:
Nå ja, det er jo trist, hvis det bliver koldt. Så hellere en menneskeskabt "recovery", som kan ende med mere end 70 meter havstigning, eller hvad er din pointe..?



Hvordan skal man få 70m havstigning når verdenshavene koger tomme og Jorden får et klima som Venus?
eller
Hvordan smelter man Antarktisk selvom temperaturerne er langt under frysepunktet?


24-06-2010 10:56
GLARProfilbillede★★★★☆
(1023)
@Kulde-varmen

Det skal du spørge Al Gore om ! I hans seneste bog 'Vores Valg' er der på en Phoshoppet illustration 1974 meters vandstandsstigninger.... Cuba og nærmeste omegn er blevet undersøisk og Panama er omdannet til Internationalt farvand.
24-06-2010 14:07
Jakob
★★★★★
(5459)
.



kulden-varmen skrev:
Hvordan smelter man Antarktisk selvom temperaturerne er langt under frysepunktet?



Det ved jeg ikke lige helt, var det ikke mig, der spurgte først..?

Men selv langt under frysepunktet må en lille temperaturstigning i de øverste islag give anledning til overfladespændinger og revnedannelser.
Temperaturen på det flydende saltvand er måske under nul grader, men ikke meget.
Og det lidt varmere flydende saltvand kan måske smelte is og gnave sig ind under isbjerge, der står på havbunden, så de brækker af i kæmpe stykker, som flyder nordpå og smelter.

Lyder det sandsynligt..?

Og måske et ledende spørgsmål til din personlige omvendelse:
Anerkender du svingningerne mellem polerne, så du ikke mere er i tvivl om, at vi godt kan have global opvarmning, selvom det ikke er jævnt fordelt på de to klodehalvdele..?
Jeg har søgt efter det, uden at kunne finde det, men husker jeg ikke rigtigt, at det er et spørgsmål, som du har funderet en del over, og som der med rick_uk's indlæg nu er givet svar på..?



.
24-06-2010 16:46
Kosmos
★★★★★
(3989)
Jeg har søgt efter det, uden at kunne finde det, men husker jeg ikke rigtigt, at det er et spørgsmål, som du har funderet en del over...

- jeg er ikke helt sikker på, hvad du mener med 'det'!? Måske 'Klima på vippen'?
24-06-2010 19:44
Jakob
★★★★★
(5459)
.



Kosmos skrev:
- jeg er ikke helt sikker på, hvad du mener med 'det'!?


Nej, men nu var det jo også Kulden Varmens overvejelser, som jeg spurgte til.




.
24-06-2010 20:55
kulden-varmenProfilbillede★★★★★
(2086)
Jakob skrev:

kulden-varmen skrev:
Hvordan smelter man Antarktisk selvom temperaturerne er langt under frysepunktet?


Det ved jeg ikke lige helt, var det ikke mig, der spurgte først..?

Men selv langt under frysepunktet må en lille temperaturstigning i de øverste islag give anledning til overfladespændinger og revnedannelser.
Temperaturen på det flydende saltvand er måske under nul grader, men ikke meget.
Og det lidt varmere flydende saltvand kan måske smelte is og gnave sig ind under isbjerge, der står på havbunden, så de brækker af i kæmpe stykker, som flyder nordpå og smelter.

Lyder det sandsynligt..?

næ!
Og måske et ledende spørgsmål til din personlige omvendelse:
Anerkender du svingningerne mellem polerne, så du ikke mere er i tvivl om, at vi godt kan have global opvarmning, selvom det ikke er jævnt fordelt på de to klodehalvdele..?
Jeg har søgt efter det, uden at kunne finde det, men husker jeg ikke rigtigt, at det er et spørgsmål, som du har funderet en del over, og som der med rick_uk's indlæg nu er givet svar på..?


Ja det er en mulighed at fordelingen varmen kan ændre sig. Men isen er stadigt kold på grund af istidens kulde, så det er meget svært at opvarme den selvom overfladen bliver over frysepunktet og det som fordamper falder igen som sne.


24-06-2010 21:03
kulden-varmenProfilbillede★★★★★
(2086)
GLAR skrev:
Det skal du spørge Al Gore om ! I hans seneste bog 'Vores Valg' er der på en Phoshoppet illustration 1974 meters vandstandsstigninger.... Cuba og nærmeste omegn er blevet undersøisk og Panama er omdannet til Internationalt farvand.


Jeg tænke om det var højden på Mount Ararat, hvor Noars ark standede efter syndfloden, men nej det 5.165 meter højt.


12-07-2010 13:05
Jakob
★★★★★
(5459)
.




kulden-varmen skrev:
Jakob skrev:

kulden-varmen skrev:
Hvordan smelter man Antarktisk selvom temperaturerne er langt under frysepunktet?


Det ved jeg ikke lige helt, var det ikke mig, der spurgte først..?

Men selv langt under frysepunktet må en lille temperaturstigning i de øverste islag give anledning til overfladespændinger og revnedannelser.
Temperaturen på det flydende saltvand er måske under nul grader, men ikke meget.
Og det lidt varmere flydende saltvand kan måske smelte is og gnave sig ind under isbjerge, der står på havbunden, så de brækker af i kæmpe stykker, som flyder nordpå og smelter.

Lyder det sandsynligt..?

næ!



Hvor meget større isbjerg kan der ligge på Sydpolen, før det bryder sammen under sin egen vægt og smuldrer ud i havet..?



.
13-07-2010 13:01
kulden-varmenProfilbillede★★★★★
(2086)
Jakob skrev:
Hvor meget større isbjerg kan der ligge på Sydpolen, før det bryder sammen under sin egen vægt og smuldrer ud i havet..?


Det er et af den slags spørgsmål som kun kan besvares eksperimentelt eller statistisk.

Der skete et større sammenbrud af Antarktis' is-kappe for nogen milioner år siden. Men der er sket mindre sammenbrud i den sene jernalder og igen omkring år 1100.

Nej der er ingen direkte forbindelse i sammenbrud af Antarktis' is-kappe og nogen som helst global opvarmning.

Du ville ønske at der var, men der er ingen sammenhæng.


13-07-2010 20:04
Jakob
★★★★★
(5459)
.




kulden-varmen skrev:
Der skete et større sammenbrud af Antarktis' is-kappe for nogen milioner år siden. Men der er sket mindre sammenbrud i den sene jernalder og igen omkring år 1100.

Nej der er ingen direkte forbindelse i sammenbrud af Antarktis' is-kappe og nogen som helst global opvarmning.

Du ville ønske at der var, men der er ingen sammenhæng.



Tak for dit svar.
Mit personlige ønske til klimasammenhæng er næppe relevant i søgen efter en objektiv sandhed.
Men nej, jeg vil da ønske, at vi kan forårsage nogle graders global opvarmning, som du ønsker, men uden det får alvorlige konsekvenser.
Og det ville jo nok hjælpe, hvis vi bare kunne læsse havvandsstigninger af på sydpolen i form af sne.
Men det forstår jeg på dig, at vi ikke kan regne med, men nærmere til enhver tid må forvente at få det hele i hovedet igen.



.
RE: Den objektiv sandhed14-07-2010 14:13
kulden-varmenProfilbillede★★★★★
(2086)
Jakob skrev:
Mit personlige ønske til klimasammenhæng er næppe relevant i søgen efter en objektiv sandhed.

Den objektiv sandhed har meget trange kår i klimadebatten.
Det menneskelige behov for religion er dybere end behovet for sandhed. Objektivitet kræver en afstand og overblik og ødelægges af et følelsesmæssigt engagement.

Men nej, jeg vil da ønske, at vi kan forårsage nogle graders global opvarmning, som du ønsker, men uden det får alvorlige konsekvenser.
Og det ville jo nok hjælpe, hvis vi bare kunne læsse havvandsstigninger af på sydpolen i form af sne.
Men det forstår jeg på dig, at vi ikke kan regne med, men nærmere til enhver tid må forvente at få det hele i hovedet igen.

Der falder også kometer ned. Og pas på i trafikken.


14-07-2010 20:14
Jakob
★★★★★
(5459)
.




kulden-varmen skrev:
Og pas på i trafikken.


Man har selvfølgelig et ansvar for ikke at skade andre, når man kører i trafikken.
Enhver ulykke, som rammer den enkelte, kan være alvorlig.

Men det må nok trods alt være rimeligt at forlange lidt større sikkerhedskrav, når det er hele menneskehedens velfærd og fremtidige eksistens, der står på spil.
Er vi ikke enige om dette, så bliver vi aldrig enige om klimapolitikken.



.
17-07-2010 00:19
kulden-varmenProfilbillede★★★★★
(2086)
Hvor mange meters havstigning skal der til for at det truer menneskeheden?


17-07-2010 08:50
Jakob
★★★★★
(5459)
.



@kulden-varmen


Truslen om klimaforandringer kan efter min bedste overbevisning kun meget dårligt måles på ændringer i havvandstand.
Det minder for meget om at køre hurtigt i trafikken med bind for øjnene og bilen fuld af mennesker og føle sig sikker, fordi man endnu ikke kan måle en bule i kofangeren.
Når man først måler en bule i kofangeren, så kan det være for sent at reagere, fordi vejtræet ikke kan standses ved kofangeren, men totalskader hele bilen.



.
17-07-2010 10:10
kulden-varmenProfilbillede★★★★★
(2086)
Jeg forstår ikke sammenligningen. Hvis bilen er jorden i sin bane om solen, hvad er da vejtræet? En komet?


22-07-2010 21:32
rick_uk
★★★★☆
(1140)
Deep Ocean Warming.

REUTERS: Scientists dig deep into ocean warming conundrum (22/7-10)

What's changed in the last decade is that we've started to accumulate enough measurements to show there are widespread changes happening in the deep ocean. And those include really remarkably widespread warming of the deepest layers of the ocean

"The heat storage aspect is important because over the past 50 years, about 90 percent of the extra heat stored by the earth is now found in the ocean"...The deep ocean takes up 10 to 20 percent of this.


Se også:

Where has all the heat gone? (1974-10)


Vh rick

Vi har hørt varslerne. Klokken tikker....Informerede valg.
28-07-2010 09:35
rick_uk
★★★★☆
(1140)
SCIENCE DAILY: Converging Weather Patterns Caused Last Winter's Huge Snows in U.S. (26/7-10)

The memory of last winter's blizzards may be fading in this summer's searing heat, but scientists studying them have detected a perfect storm of converging weather patterns that had little relation to climate change. The extraordinarily cold, snowy weather that hit parts of the U.S. East Coast and Europe was the result of a collision of two periodic weather patterns in the Atlantic and Pacific Oceans, a new study in the journal Geophysical Research Letters finds.

After a blizzard shut down the nation's capital, skeptics of global warming used the frozen landscape to suggest that manmade climate change did not exist...

After analyzing 60 years of snowfall measurements, a team...found that the anomalous winter was caused by two colliding weather events. El Niño, the cyclic warming of the tropical Pacific, brought wet weather to the southeastern U.S. at the same time that a strong negative phase in a pressure cycle called the North Atlantic Oscillation pushed frigid air from the arctic down the East Coast and across northwest Europe. End result: more snow.

"Snowy winters will happen regardless of climate change," said Richard Seager, a climate scientist at Lamont-Doherty and lead author of the study. "A negative North Atlantic Oscillation this particular winter made the air colder over the eastern U.S., causing more precipitation to fall as snow. El Niño brought even more precipitation -- which also fell as snow."

David Robinson, a climate scientist at Rutgers University who was not involved in the research, said the study fills an important role in educating the public about the difference between freak weather events and human-induced climate change.

"When the public experiences abnormal weather, they want to know what's causing it," he said. "This paper explains what happened, and why global warming was not really involved. It helps build credibility in climate science."



Vh rick

Vi har hørt varslerne. Klokken tikker....Informerede valg.
Side 1 af 24123>>>





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