human„enerated emissions from fossil carbon are lare e c compared to the net impact from natural sources !% r ou s meanin that co2 is accumulatin in the atmosphere ›see figure 4œ‚ bout a s n — o i t s …he warmin oceans will also absorb co2 more slowl as e their concentration of dissoled co2 rises‚!^ qu — “co2 levels fluctuate naturally anyway” …here is a natural annual oscillation in atmospheric co2 leels caused b the seasonal rowth and recedin of eetation!&‚ …hese annual oscillations are small compared to the trend as shown in figure 4 below‚ …here is also an oscillation in co2 leels between interlacial periods but aain these oscillations occur at much slower timescales than the chanes obsered toda‚!* figure 4 Measured concentrations of co2 showin annual oscillations 450ppm Scripps Institute, 2020. 400ppm 350ppm 300ppm 250ppm 1960 1980 2000 2020 1” Žalƒowsƒi 2000 1Ÿ Sarmiento et al‚ 1žž—ª Mc§inle et al‚ 201¡ 1¡ §eelin 1žŸ0 1 — Martin 1žž0ª ´en 200 2
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