论文标题
臭氧耗竭引起的气候变化是50 pc超新星
Ozone depletion-induced climate change following a 50 pc supernova
论文作者
论文摘要
众所周知，地球大气中的臭氧对气候具有辐射强迫作用。大约260万年前，由一个或多个附近的超新星的地球化学证据激励，我们研究了一个问题，即在大约50 pc的超新星是否会通过对大气臭氧浓度的影响来导致地球气候变化。我们使用了“行星模拟器”（Plasim）中间复杂性气候模型，并使用了从现有大气化学模型中获取的规定的臭氧轮廓。我们发现，对全球平均表面温度的影响很小，但是局部变化较大，大气循环和降水模式的差异可能会产生区域影响。
Ozone in Earth's atmosphere is known to have a radiative forcing effect on climate. Motivated by geochemical evidence for one or more nearby supernovae about 2.6 million years ago, we have investigated the question of whether a supernova at about 50 pc could cause a change in Earth's climate through its impact on atmospheric ozone concentrations. We used the "Planet Simulator" (PlaSim) intermediate-complexity climate model with prescribed ozone profiles taken from existing atmospheric chemistry modeling. We found that the effect on globally averaged surface temperature is small, but localized changes are larger and differences in atmospheric circulation and precipitation patterns could have regional impacts.
