The pre-industrial level of co2 in the atmosphere in ppmv is about?
multipleQAs
What is the commonly assumed value of the pre-industrial level of co2 in the atmosphere in ppmv? Based on more recent indirect data, what is the value of the pre-industrial level of co2 in the atmosphere in ppmv?
290
260-270
Carbon dioxide in Earth's atmosphere
The pre-industrial level of co2 in the atmosphere in ppmv is about?
Carbon dioxide in Earth's atmosphere Carbon dioxide equivalent Representative Concentration Pathway Keeling Curve Carbon dioxide Talk:Carbon dioxide in Earth's atmosphere Talk:Greenhouse gas/Archive 2 Global warming Talk:Carbon dioxide/Archive 1 Talk:Greenhouse gas/Archive 4
<b>Carbon dioxide</b> (CO 2) is an important trace gas in Earth&#39;s <b>atmosphere</b>. It is an 
integral part of ... 2 concentrations were about 260–280 <b>ppmv</b> immediately before 
industrial <b>emissions</b> ... During this time, the <b>atmospheric carbon dioxide</b> 
<b>concentration</b> has varied ... In <b>the pre</b>-<b>industrial</b> era these fluxes were largely in 
balance. <b>Carbon dioxide</b> equivalent (CDE) and equivalent <b>carbon dioxide</b> are two related 
but distinct ... By the UN <b>climate</b> change panel (IPCC): n×10<sup>9</sup> tonnes of CO2 
equivalent (GtCO2eq). ... is <b>the pre</b>-<b>industrial concentration</b>, 280 ppm. Hence ... in 
<b>ppmv</b>. To calculate the radiative forcing for a 1998 gas mixture, IPCC 2001 gives 
the&nbsp;... A Representative <b>Concentration</b> Pathway (RCP) is a greenhouse gas 
<b>concentration</b> (not <b>emissions</b>) trajectory adopted by the IPCC for its fifth 
Assessment Report (AR5) in 2014. It supersedes the Special Report on 
<b>Emissions</b> Scenarios (SRES) projections ... 2000 <b>ppmv</b> in 2250, which is nearly 
seven times <b>the pre</b>-<b>industrial level</b>. The Keeling Curve is a graph of the accumulation of <b>carbon dioxide</b> in the Earth&#39;s 
<b>atmosphere</b> ... <b>Prior to</b> the 1950s, measurements of <b>atmospheric</b> CO ... 2 
<b>concentration</b> from 313 parts per million by volume (<b>ppmv</b>) in March 1958 to 406 
<b>ppmv</b>&nbsp;... <b>Carbon dioxide</b> (chemical formula CO 2) is a colorless gas with a density about 
60% higher ... The current <b>concentration</b> is about 0.04% (410 ppm) by volume, 
having risen from <b>pre</b>-<b>industrial levels</b> of 280 ppm. Natural sources include&nbsp;... What &quot;<b>pre</b>-<b>industrial</b>&quot; is isn&#39;t defined either. ... As of January 2007, the earth&#39;s 
<b>atmospheric CO2 concentration</b> is about 0.0383% by volume (383 <b>ppmv</b>) or 
0.0582% by weight.[1] This&nbsp;... Parts Per Million. On a similar notice, the table that shows the parts per bilion of 
various ... That implies there was no detectable <b>pre</b>-<b>industrial CO2 concentration</b>
? ... I&#39;ve added &quot;present <b>CO2 levels</b> are 380 <b>ppmv</b>, approximately 100 <b>ppmv</b> 
higher&nbsp;... Global warming is the long-term rise in the average temperature of the Earth&#39;s 
<b>climate</b> system. ... The effects of global warming include rising sea <b>levels</b>, 
regional changes in ... Since <b>the pre</b>-<b>industrial</b> period, global average land 
temperatures have ... Of these <b>emissions</b>, 65% was <b>carbon dioxide</b> from fossil 
fuel burning and&nbsp;... &quot;<b>Carbon dioxide</b>, CO2, is one of the gases in our <b>atmosphere</b>, being uniformly ... It 
limits the CO2 <b>emissions</b> of industrialized countries, not other countries. ... If the 
CO2 <b>concentration</b> is too high, then all hemoglobin is saturated with <b>carbon</b> ... in 
CO2 in <b>ppmv</b> per year, not some percent increase over <b>the preindustrial</b> value. Inclusion of table of <b>CO2 emissions</b> from various fossil fuels. As it is, the table 
proposed for ... In the same way, the <b>amount of CO2</b> that humans add to the 
<b>atmosphere</b> in 10 days is also totally insignificant. ... of <b>carbon dioxide</b> has 
increased by about 36% to 380 <b>ppmv</b>, or 100 <b>ppmv</b> over modern <b>pre</b>-<b>industrial</b> 
<b>levels</b>&quot;) but in a&nbsp;...
260 -- 280 ppmv
Carbon dioxide in Earth's atmosphere