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Emisije CO2 i NOx
Re: Emisije CO2 i NOx
Carbon dioxide is gushing into Earth’s atmosphere at record pace
https://www.washingtonpost.com/news/cap ... &tid=sm_tw
Participants look at a screen showing a world map with climate anomalies during the U.N. Climate Change Conference in Le Bourget, near Paris, on Dec. 8, 2015. (Stephane Mahe/Reuters)
The concentration of CO2, a planet-warming greenhouse gas, set a new record in 2016, according to a report by the U.N. World Meteorological Organization. The year-to-year spike in CO2, from 400 ppm in 2015 to 403.3 ppm in 2016, also represents the biggest annual jump on record, some of which can be attributed to the 2015-2016 El Nino.
The atmosphere has as much CO2 in it as it did 3 to 5 million years ago, the report states, when “the Greenland and West Antarctic ice sheets melted and even some of the East Antarctic ice was lost, leading to sea levels that were [33 to 66 feet] higher than those today.”
The report starts out:
The rate of increase of atmospheric carbon dioxide (CO2) over the past 70 years is nearly 100 times larger than that at the end of the last ice age.
That in itself is alarming. But here’s the kicker — and the thing that may end up being more important than the total amount of CO2 in the air:
As far as direct and proxy observations can tell, such abrupt changes in the atmospheric levels of CO2 have never before been seen.
The overwhelming majority of relevant scientists agree that’s a problem.
Prior to the industrial revolution, when fossil-fuel-burning technologies started to come online, global concentration of CO2 was around 280 ppm. In just 100 short years — the blink of an eye, geologically — that level surged above 400 ppm. Burning fossil fuels takes carbon out of the ground and injects it into the atmosphere, where it prevents Earth’s heat from radiating back into space. It’s led to a 40 percent increase in the radiative forcing, or “warming effect,” of our climate.
We simply don’t know how Earth is going to respond to such a rapid increase in temperature. There is no precedent we can look to that could provide insight on how ecosystems will or won’t adapt. The closest analog we have is something that happened 55 million years ago: an era scientists call the PETM — paleo-eocene thermal maximum — in which CO2 climbed to record levels over tens of thousands of years. You can see, it doesn’t hold a candle to the rate we’re witnessing in the 20th and 21st centuries.
(Angela Fritz for wunderground.com)
The increase in greenhouse gas has caused the planet to warm close to 1.5 degrees Celsius since the industrial revolution. It seems small, but it’s significant. The Paris Agreement pointed to 2 degrees as the point at which Earth’s climate may become truly inhospitable for current life — with heat waves, drought, sea-level rise and catastrophic flooding as the main impacts. The agreement basically says staying below that threshold is how we can avoid the most harm.
“Without rapid cuts in CO2 and other greenhouse gas emissions, we will be heading for dangerous temperature increases by the end of this century, well above the target set by the Paris climate change agreement,” WMO Secretary-General Petteri Taalas said in a statement. “Future generations will inherit a much more inhospitable planet.”
https://www.washingtonpost.com/news/cap ... &tid=sm_tw
Participants look at a screen showing a world map with climate anomalies during the U.N. Climate Change Conference in Le Bourget, near Paris, on Dec. 8, 2015. (Stephane Mahe/Reuters)
The concentration of CO2, a planet-warming greenhouse gas, set a new record in 2016, according to a report by the U.N. World Meteorological Organization. The year-to-year spike in CO2, from 400 ppm in 2015 to 403.3 ppm in 2016, also represents the biggest annual jump on record, some of which can be attributed to the 2015-2016 El Nino.
The atmosphere has as much CO2 in it as it did 3 to 5 million years ago, the report states, when “the Greenland and West Antarctic ice sheets melted and even some of the East Antarctic ice was lost, leading to sea levels that were [33 to 66 feet] higher than those today.”
The report starts out:
The rate of increase of atmospheric carbon dioxide (CO2) over the past 70 years is nearly 100 times larger than that at the end of the last ice age.
That in itself is alarming. But here’s the kicker — and the thing that may end up being more important than the total amount of CO2 in the air:
As far as direct and proxy observations can tell, such abrupt changes in the atmospheric levels of CO2 have never before been seen.
The overwhelming majority of relevant scientists agree that’s a problem.
Prior to the industrial revolution, when fossil-fuel-burning technologies started to come online, global concentration of CO2 was around 280 ppm. In just 100 short years — the blink of an eye, geologically — that level surged above 400 ppm. Burning fossil fuels takes carbon out of the ground and injects it into the atmosphere, where it prevents Earth’s heat from radiating back into space. It’s led to a 40 percent increase in the radiative forcing, or “warming effect,” of our climate.
We simply don’t know how Earth is going to respond to such a rapid increase in temperature. There is no precedent we can look to that could provide insight on how ecosystems will or won’t adapt. The closest analog we have is something that happened 55 million years ago: an era scientists call the PETM — paleo-eocene thermal maximum — in which CO2 climbed to record levels over tens of thousands of years. You can see, it doesn’t hold a candle to the rate we’re witnessing in the 20th and 21st centuries.
(Angela Fritz for wunderground.com)
The increase in greenhouse gas has caused the planet to warm close to 1.5 degrees Celsius since the industrial revolution. It seems small, but it’s significant. The Paris Agreement pointed to 2 degrees as the point at which Earth’s climate may become truly inhospitable for current life — with heat waves, drought, sea-level rise and catastrophic flooding as the main impacts. The agreement basically says staying below that threshold is how we can avoid the most harm.
“Without rapid cuts in CO2 and other greenhouse gas emissions, we will be heading for dangerous temperature increases by the end of this century, well above the target set by the Paris climate change agreement,” WMO Secretary-General Petteri Taalas said in a statement. “Future generations will inherit a much more inhospitable planet.”
Najgore je svađati se sa budalom. Prvo te spusti na svoj nivo, a onda te dotuče iskustvom...
Re: Emisije CO2 i NOx
Najgore je svađati se sa budalom. Prvo te spusti na svoj nivo, a onda te dotuče iskustvom...
Re: Emisije CO2 i NOx
Znaci hibridi nam se smese narednih godina
Re: Emisije CO2 i NOx
Kako kome, nama čađavci.
Re: Emisije CO2 i NOx
Imam osećaj da će nemački auto lobi da blokira ovo 
Ovo je prosto nerealna cifra. Hibridi nisu jeftini za masovnu upotrebu.
Ovo je prosto nerealna cifra. Hibridi nisu jeftini za masovnu upotrebu.
Re: Emisije CO2 i NOx
Postaće jeftini i standardni, kao i sve ostalo što se omasovi. Za početak je dovoljno da energiju koju utrošiš na zaustavljanje u stani-kreni vožnji, konvertuješ u pokretanje iz mesta. Nemam nikakvu potrebu da se vozim na struju, ali jedan mali KERS na nepogonskoj osovini bi odlično došao svakom tipu automobila sa pogonom na dva točka. Uštedeo bi mnogo goriva u gradu, omogućio polazak iz mesta na snegu i ledu, mogao da pojača performanse značajno, u kratkom vremenskom periodu, automobilima sa visokim performansama.
Re: Emisije CO2 i NOx
Potiskivanjem dizela, koji su najzaslužniji za obaranje proseka co2, pred benzincima će biti nemoguć zadatak. Ukidanje ili svođenje na minimum (samo u performance verzijama) 3.0 motora je neizbežno.
Re: Emisije CO2 i NOx
Bas nedavno gledao na TV reportazu kako je VW predstavio novi ciklus sagorevanja benzina koji bi trebao da znatno smanji emitovanje CO2. Menja se bitno trajanje otvaranja izduvnog ventila, kontra od Atkinsonovog ciklusa sa produzenim vremenom usisnog ventila.
Testovi pokazuju da ima smanjenja, navodno i do 20%, ali i da drasticno poraste stvaranje koksa tj cvrstih cestica usled loseg sagorevanja.
Predlog je da se benzincima uvede obavezni "DPF" filter tj filter cestica da bi se to resavalo kao novonastalo.
Emitovano je na vox.de televiziji sa prikazom simulacije rada.
Testovi pokazuju da ima smanjenja, navodno i do 20%, ali i da drasticno poraste stvaranje koksa tj cvrstih cestica usled loseg sagorevanja.
Predlog je da se benzincima uvede obavezni "DPF" filter tj filter cestica da bi se to resavalo kao novonastalo.
Emitovano je na vox.de televiziji sa prikazom simulacije rada.
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Ivan
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Re: Emisije CO2 i NOx
Evo vidi se otprilike koliko su dizeli mali deo problema, a ne vidi se koliki deo otpada od toga na komercijalni program, pa dalje koliko je tu uopste dizela u putnickim autima, mozda recimo 2%, a satanizuju se beskrajno, neka sklone sve dizele sutra sa ulice ako ce im to resiti problem, a nece, samo ce im otvoriti nove...
A sada ce da prave dizela od benzinca, sa polusagorevanjem da izbacuje cestice gore od trenutnih dizela, pa dpf pa gluposti.
A sada ce da prave dizela od benzinca, sa polusagorevanjem da izbacuje cestice gore od trenutnih dizela, pa dpf pa gluposti.
Re: Emisije CO2 i NOx
Srećom pa su se dovukli pameti pa da ih više ukinu, da sagoreva kako treba ne bi morao da ima kojekakvih filtera.
Čestice su te koje nas ubijaju, ne samo CO2.
CO2 je bar hrana za biljke, NOx je otrov za većinu živog sveta.
Veća šteta je što se ti trovači posle dovlače kod nas pa skidaj DPF, EGR i bude gore nego D2 u G2.
Da l razumete da se taj stari prokleti dizel zove ULJE i to se legalno kupuje na pumpi i sipa u prevozna sredstva. Pa to je meni ono totalni sumrak civilizacije, gore nego TE na ugalj bez filtera + pepelišta i ogrev na čvrsta goriva.
Prošli vek..
Uljem se podmazuje, a najgori kancer je sagorevanje ulja nepotpunim sagorevanjem što ima većina dizela na našim ulicama.
Onda remap pa bude još gore.
A drugo, Atkins smanjuje bar 10-15%, ko ume da napravi. Ko ne ume, kaže da ne valja
Čestice su te koje nas ubijaju, ne samo CO2.
CO2 je bar hrana za biljke, NOx je otrov za većinu živog sveta.
Veća šteta je što se ti trovači posle dovlače kod nas pa skidaj DPF, EGR i bude gore nego D2 u G2.
Da l razumete da se taj stari prokleti dizel zove ULJE i to se legalno kupuje na pumpi i sipa u prevozna sredstva. Pa to je meni ono totalni sumrak civilizacije, gore nego TE na ugalj bez filtera + pepelišta i ogrev na čvrsta goriva.
Prošli vek..
Uljem se podmazuje, a najgori kancer je sagorevanje ulja nepotpunim sagorevanjem što ima većina dizela na našim ulicama.
Onda remap pa bude još gore.
A drugo, Atkins smanjuje bar 10-15%, ko ume da napravi. Ko ne ume, kaže da ne valja
Boringly average, but also perfect for school run mums
Re: Emisije CO2 i NOx
http://www.vreme.com/cms/view.php?id=1540685
...prema Agenciji za zaštitu životne sredine SAD, jedan neefikasan kućni šporet na drva oslobađa količinu PM10 koja je jednaka količini koju u istom vremenu izbaci pet starih dizel autobusa...
...prema Agenciji za zaštitu životne sredine SAD, jedan neefikasan kućni šporet na drva oslobađa količinu PM10 koja je jednaka količini koju u istom vremenu izbaci pet starih dizel autobusa...
Re: Emisije CO2 i NOx
Sedam godina zatvora za direktora Volkswagena u SAD.
http://auto.blog.rs/blog/auto/vesti/201 ... gena-u-sad
http://auto.blog.rs/blog/auto/vesti/201 ... gena-u-sad
Re: Emisije CO2 i NOx
Pravda za Olivera
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dragvorl
- Site Admin
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Re: Emisije CO2 i NOx
Ostaili su pobegli za Nemacku na vreme...
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