@jimdtweet @GlennCarr6 @BrknMan @WayneAllanH @JohnDublin10 @IngersolRobert @EricWil06256732 @ejwwest @Tcaddy5 @spock246 @OscarsWild1 @BubbasRanch @rln_nelson @IanDJbrown2 @BridgetHolmstro @keithamccluskey @revetje @DawnTJ90 @Kenneth72712993 @Narvuntien @FlowerandFist @Canadianworker2 @chimera414 @RushhourP @Convict025 @robinlarder @TheDisproof @LandonCraigie @ClimatePoet @robhon_ @priscian @MedBennett @BarbaraGirouard @OnTheRo37386528 @SniemN @Fiddlers__Green @dizzle29606338 @FillmoreWhite @AristotleMrs @HalBrow68884227 @dan613 @RobMeekel @GuyGadboisGuyG1 @caerbannog666 @BradSchrag @MartinJBern @jgorman2424 @Pat88181680 @TaroIstok @ClimateOfGavin 1/8》That's incorrect, Jim. The CO2 removal rate depends mainly on atmospheric CO2 level, and does not depend at all on the emission rate (except indirectly, as emission rate eventually affects concentration).
threadreaderapp.com/thread/1425973…
@jimdtweet @GlennCarr6 @BrknMan @WayneAllanH @JohnDublin10 @IngersolRobert @EricWil06256732 @ejwwest @Tcaddy5 @spock246 @OscarsWild1 @BubbasRanch @rln_nelson @IanDJbrown2 @BridgetHolmstro @keithamccluskey @revetje @DawnTJ90 @Kenneth72712993 @Narvuntien @FlowerandFist @Canadianworker2 @chimera414 @RushhourP @Convict025 @robinlarder @TheDisproof @LandonCraigie @ClimatePoet @robhon_ @priscian @MedBennett @BarbaraGirouard @OnTheRo37386528 @SniemN @Fiddlers__Green @dizzle29606338 @FillmoreWhite @AristotleMrs @HalBrow68884227 @dan613 @RobMeekel @GuyGadboisGuyG1 @caerbannog666 @BradSchrag @MartinJBern @jgorman2424 @Pat88181680 @TaroIstok @ClimateOfGavin 2/8》If CO2 emission rate is cut to less than the removal rate, then the atmospheric CO2 concentration must decline. If emissions suddenly ceased entirely, the current ≈5 PgC/yr removal rate would initially be unchanged, so atmospheric CO2 concentration would decline rapidly.
@jimdtweet @GlennCarr6 @BrknMan @WayneAllanH @JohnDublin10 @IngersolRobert @EricWil06256732 @ejwwest @Tcaddy5 @spock246 @OscarsWild1 @BubbasRanch @rln_nelson @IanDJbrown2 @BridgetHolmstro @keithamccluskey @revetje @DawnTJ90 @Kenneth72712993 @Narvuntien @FlowerandFist @Canadianworker2 @chimera414 @RushhourP @Convict025 @robinlarder @TheDisproof @LandonCraigie @ClimatePoet @robhon_ @priscian @MedBennett @BarbaraGirouard @OnTheRo37386528 @SniemN @Fiddlers__Green @dizzle29606338 @FillmoreWhite @AristotleMrs @HalBrow68884227 @dan613 @RobMeekel @GuyGadboisGuyG1 @caerbannog666 @BradSchrag @MartinJBern @jgorman2424 @Pat88181680 @TaroIstok @ClimateOfGavin 3/8》The falling CO2 level would, in turn, cause a gradual reduction in the removal rate, mirroring the acceleration in removal rate which has happened as the CO2 level has risen.
nature.com/articles/ncomm…
@jimdtweet @GlennCarr6 @BrknMan @WayneAllanH @JohnDublin10 @IngersolRobert @EricWil06256732 @ejwwest @Tcaddy5 @spock246 @OscarsWild1 @BubbasRanch @rln_nelson @IanDJbrown2 @BridgetHolmstro @keithamccluskey @revetje @DawnTJ90 @Kenneth72712993 @Narvuntien @FlowerandFist @Canadianworker2 @chimera414 @RushhourP @Convict025 @robinlarder @TheDisproof @LandonCraigie @ClimatePoet @robhon_ @priscian @MedBennett @BarbaraGirouard @OnTheRo37386528 @SniemN @Fiddlers__Green @dizzle29606338 @FillmoreWhite @AristotleMrs @HalBrow68884227 @dan613 @RobMeekel @GuyGadboisGuyG1 @caerbannog666 @BradSchrag @MartinJBern @jgorman2424 @Pat88181680 @TaroIstok @ClimateOfGavin 4/8》The effective "first half-life" of CO2 added to the atmosphere is about 30 - 35 years, making the effective atmospheric lifetime about fifty years. However, if CO2 emissions were to cease, there would be a very "long tail" on the "decay curve."
sealevel.info/CO2_Residence_…
@jimdtweet @GlennCarr6 @BrknMan @WayneAllanH @JohnDublin10 @IngersolRobert @EricWil06256732 @ejwwest @Tcaddy5 @spock246 @OscarsWild1 @BubbasRanch @rln_nelson @IanDJbrown2 @BridgetHolmstro @keithamccluskey @revetje @DawnTJ90 @Kenneth72712993 @Narvuntien @FlowerandFist @Canadianworker2 @chimera414 @RushhourP @Convict025 @robinlarder @TheDisproof @LandonCraigie @ClimatePoet @robhon_ @priscian @MedBennett @BarbaraGirouard @OnTheRo37386528 @SniemN @Fiddlers__Green @dizzle29606338 @FillmoreWhite @AristotleMrs @HalBrow68884227 @dan613 @RobMeekel @GuyGadboisGuyG1 @caerbannog666 @BradSchrag @MartinJBern @jgorman2424 @Pat88181680 @TaroIstok @ClimateOfGavin 5/8》That is, the "2nd half-life" would be longer than the 1st, and the 3rd longer than the 2nd, because a falling CO2 level would cause the other carbon reservoirs to take up CO2 at diminishing rates, and eventually in some cases even to emit it.
sealevel.info/global.1751_20…
@jimdtweet @GlennCarr6 @BrknMan @WayneAllanH @JohnDublin10 @IngersolRobert @EricWil06256732 @ejwwest @Tcaddy5 @spock246 @OscarsWild1 @BubbasRanch @rln_nelson @IanDJbrown2 @BridgetHolmstro @keithamccluskey @revetje @DawnTJ90 @Kenneth72712993 @Narvuntien @FlowerandFist @Canadianworker2 @chimera414 @RushhourP @Convict025 @robinlarder @TheDisproof @LandonCraigie @ClimatePoet @robhon_ @priscian @MedBennett @BarbaraGirouard @OnTheRo37386528 @SniemN @Fiddlers__Green @dizzle29606338 @FillmoreWhite @AristotleMrs @HalBrow68884227 @dan613 @RobMeekel @GuyGadboisGuyG1 @caerbannog666 @BradSchrag @MartinJBern @jgorman2424 @Pat88181680 @TaroIstok @ClimateOfGavin 6/8》Integrating that long tail is the basis for the long atmospheric lifetime estimates you sometimes hear. What they don't mention is that decay of the long tail would occur only when CO2 levels are below 340 ppmv, so CO2 would be indisputably beneficial.
@jimdtweet @GlennCarr6 @BrknMan @WayneAllanH @JohnDublin10 @IngersolRobert @EricWil06256732 @ejwwest @Tcaddy5 @spock246 @OscarsWild1 @BubbasRanch @rln_nelson @IanDJbrown2 @BridgetHolmstro @keithamccluskey @revetje @DawnTJ90 @Kenneth72712993 @Narvuntien @FlowerandFist @Canadianworker2 @chimera414 @RushhourP @Convict025 @robinlarder @TheDisproof @LandonCraigie @ClimatePoet @robhon_ @priscian @MedBennett @BarbaraGirouard @OnTheRo37386528 @SniemN @Fiddlers__Green @dizzle29606338 @FillmoreWhite @AristotleMrs @HalBrow68884227 @dan613 @RobMeekel @GuyGadboisGuyG1 @caerbannog666 @BradSchrag @MartinJBern @jgorman2424 @Pat88181680 @TaroIstok @ClimateOfGavin 7/8》Actually, additional CO2 is beneficial even at 400-500 ppmv, but a lot people dispute that. (They're wrong.)
sealevel.info/negative_socia…
But nobody of consequence disputes the fact that additional CO2 is beneficial when the starting level is below 340 ppmv.
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