Mg/Ca and Sr/Ca ratios of planktonic foraminifera from North Atlantic surface...

Reliable temperature estimates from both surface and subsurface ocean waters are needed to reconstruct past upper water column temperature gradients and past oceanic heat...为重建过去上层海水柱的温度梯度以及过往海洋热相关内容（原文后续表述未完整呈现），可靠的海洋表层与次表层海水温度估算值必不可少。