Sentences with phrase «co2 over the same period»

Compare this to 75 % for ln CO2 over the same period.

By way of comparison, this forcing was 12.5 times greater than the surface forcing alleged by the IPCC from increased CO2 over the same period.

Not exact matches

The researchers also used data from global climate monitoring stations to calculate CO2 emissions from tropical lands over the same time period.

Averaged over the entire globe, it's one - fourth as large as the heating caused by increasing atmospheric CO2 concentrations during the same period.

The public, press and policy makers have been repeatedly told that three claims have widespread scientific support: Global temperature has risen about a degree since the late 19th century; levels of CO2 in the atmosphere have increased by about 30 % over the same period; and CO2 should contribute to future warming.

However, more atmospheric CO2 is predicted to increase crop biomass and subsequent yields, and reduce water use by allowing plant stomates to open over shorter periods, thus assimilating the same amount of atmospheric CO2 while conserving moisture (Cutforth et al. 2007).

The public, press and policy makers have been repeatedly told that three claims have widespread scientific support: Global temperature has risen about a degree since the late 19th century; levels of CO2 [carbon dioxide] in the atmosphere have increased by about 30 percent over the same period; and CO2 should contribute to future warming.

Why not, using the same scaling, show the temperature changes from 1910 to 1945 and from 1945 to 1975 against the CO2 and Sun change over those periods and try and explain why that would show next to no relationship on that scaling?

Post # 70 was suggesting that CO2 emissions followed an exponential course over a long period, and that therefore the corresponding forcing was linear over the same period (at least since the early 20th century, as this was a response to # 68).

, contributed 50 % of the amount of total GHGs / CO2 from using fossil fuels for energy over that same period.

When flatlining temperatures wreck your global warming agenda, refusing to rise after 18 + long years in hiatus, despite record human CO2 emissions over that same period, simply homogenise, adjust (tamper) with the data.

Measurements at high wind speed and / or over the oceans show about the same CO2 levels as the ice core data of the same period.

Apparently an Australian Legislator named Stephen Fielding posted this chart and asked, «Is it the case that CO2 increased by 5 % since 1998 whilst global temperature cooled over the same period (see Fig. 1)?

Over the same time period atmospheric CO2 concentration grew from 316 ppmv to 390 ppmv or at a CAGR of 0.43 % / year.

Further, there is firm evidence that migration of CO2 isn't important in the Vostok and Dome C ice cores over the past 800,000 years: each glacial / interglacial period shows the same ratio between temperature and CO2 changes: about 8 ppmv/degr.C.

Officially NO «global warming», at all, for ~ 20 years despite record CO2 emissions over the same period!

-- How do you explain that warming rate along [1910 — 1840] period is exactly the same (+0,45 °C over 30 years) as the one observed over [1970 — 2000] period, whereas [CO2] was about 30 % lower and human emissions 5 time lower?

This graph plots those 306 data - points (the proverbial «dots»), plus the cumulative growth in CO2 levels over the same period.

Indeed, a portion of that small linear trend difference might be due to human CO2 emissions; or, then again, it might be due to the vast urbanization effect over the last 60 + years; or due to the large deforestation that's taken place; or, maybe it's entirely due to the serial fabrication of global warming by the world's climate agencies; or it's even possible that the post-1950 warming was entirely a natural phenomenon - the same as the prior 64 - year period experience.

Over the same period US CO2 generation is projected by EIA to reach 5,691 million tons (CO2), for a per capita CO2 generation of 15.2 tons, based on a business - as - usual scenario.

Global temperature has risen about a degree since the late 19th century; levels of CO2 in the atmosphere have increased by about 30 % over the same period; and CO2 should contribute to future warming.

SINCE Viner's epic fail in 2000, the global temperature dial has been stubbornly stuck on Pause, with some of the «snowiest» and coldest winters on record occurring over the same period, despite record and rising CO2 emissions...

The model's GMST response to the (negative) LU iRF forcing over the historical period, relative to what it would have been if the same forcing had been caused by changing the CO2 concentration (its transient efficacy), was almost four.

It shall also be highlighted that warming rate is exactly the same over [1910 — 1940] and [1970 — 2000] periods, whereas consumption of fossil energy (i.e manmade CO2 emissions) has been multiplied by 5 in the meantime... which actually falsifies AGW theory.

Total world CO2 emissions have increased by around 30 % over the same period:

the atmosphere have increased by about 30 % over the same period; and CO2 should contribute to future warming.

The public, press and policy makers have been repeatedly told that three claims have widespread scientific support: Global temperature has risen about a degree since the late 19th century; levels of CO2 in the atmosphere have increased by about 30 % over the same period; and CO2 should contribute to future warming.

Lagging shortly behind was an increase in co2 of 120ppm over the same period.

The public, press and policy makers have been repeatedly told that three claims have widespread scientific support: Global temperature has risen about a degree since the late 19th century; levels of CO2 [carbon dioxide] in the atmosphere have increased by about 30 percent over the same period; and CO2 should contribute to future warming.

For instance, you could define the climate warming impact over a 100 - year period of 1 million tonnes (Mt) of methane as being same as if you'd released 25 Mt of CO2.

Over this same period Global temperature increased by 0.54 °C and Atmospheric CO2 increased by 66 ppmv or 20 %

... To determine the TCS metric, we use actual physical data for the: 1) average surface temperature anomaly of 1850 - 2012, 2) atmospheric CO2 concentration history, and 3) rise in Total Solar Irradiance over the same period of time.

Over the same time period atmospheric CO2 has from about 280 ppm to near 400 ppm.

CO2 has increased from around 280 ppmv to 390 ppmv over this same period, with no 30 - year cycles and most of the increase occurring after Mauna Loa measurements were installed in 1958.

The study includes an estimate of the effect of the observed stratospheric water decadal decrease by calculating the radiation flux with and without the change, and comparing this to the increase in CO2 forcing over the same period.

The 20 % is the increase in additional CO2 levels over a period of in average 8 years, caused by emissions increasing by 22 % over the same time span...

Thus the emissions over 12 years (1990 - 2002) or 4 years (2003 - 2006) and the increase of CO2 levels over the same periods are thightly correlated, no matter how many years you group together.

If we may assume that the short term CO2 / temp ratio and the longer term ratio are the same, then the 0.6 °C increase in the period 1959 - 2004 has increased the CO2 level with 1.8 ppmv, while the observed increase is 60 ppmv... Even if we use the long term ratio (10 ppmv / °C for MWP - LIA), then the influence of temperature over the whole period is only 6 ppmv.

If we may assume that the rate of increase vs. temperature currently observed is similar for longer - term influences (over decades) on absolute CO2 levels, then the observed 1959 - 2004 temperature increase of about 0.6 °C has added about 1.3 ppmv of the 60 ppmv measured in the same period.

Just because temperature went up and CO2 also went up over the same period doesn't make a basis for calculating how much temperature will go up as CO2 increases!

If 390 W / m2 is the surface emission the window would be 390 * 0.1546 = ~ 60 W / m2 but never changing, even as co2 has increased over this same period.