2.1.1.b (Q101)

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Revision as of 13:28, 18 May 2023 by Egonw (talk | contribs) (‎Changed claim: has the IPCC statement (P3): In 2019, atmospheric CO2 concentrations reached 410 parts per million (ppm), CH4 reached 1866 parts per billion (ppb) and nitrous oxide (N2O) reached 332 ppb. Other major contributors to warming are tropospheric ozone (O3) and halogenated gases. Concentrations of CH4 and N2O have increased to levels unprecedented in at least 800,000 years (very high confidence), and there is high confidence that current CO2 concentrations are higher than at any ti...)
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2.1.1.b
No description defined

    Statements

    instance of
    section
    0 references
    has the IPCC statement
    Observed increases in well-mixed GHG concentrations since around 1750 are unequivocally caused by GHG emissions from human activities. Land and ocean sinks have taken up a near-constant proportion (globally about 56% per year) of CO2 emissions from human activities over the past six decades, with regional differences. (English)
    series ordinal
    1
    confidence level
    high confidence
    topic
    greenhouse gas
    0 references
    In 2019, atmospheric CO2 concentrations reached 410 parts per million (ppm), CH4 reached 1866 parts per billion (ppb) and nitrous oxide (N2O) reached 332 ppb. Other major contributors to warming are tropospheric ozone (O3) and halogenated gases. Concentrations of CH4 and N2O have increased to levels unprecedented in at least 800,000 years (very high confidence), and there is high confidence that current CO2 concentrations are higher than at any time over at least the past two million years. (English)
    series ordinal
    2
    confidence level
    very high confidence
    high confidence
    0 references
     
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