• For the time before records began, we have only "proxy records" reconstructed largely from tree rings and ice cores, supplemented by a few incomplete written accounts.

    开始有记录之前我们只有主要根据年轮冰芯重建的“代理记录”,还有一些不完整书面记录作为补充

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  • Studies of tree rings and ice cores indicate a more recent cycle of seven years, still much less frequent than the present cycle of every three or four years.

    年轮冰轮研究证明后来厄尔尼诺现象以周期的,仍然现在三年年发生一次的频率要低得多

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  • Estimates of earlier temperatures made from data such as ice cores and tree rings, though not as reliable as thermometers, suggest the decade may have been the warmest in the past millennium.

    早期气温数据根据冰芯树木年轮估算出来的,虽然不如温度计那么准确,但我们依然看到,过去一千气温最高的十年。

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  • Isotopes of carbon in tree rings and beryllium in ice cores show a drop-off in solar radiation during much of the period.

    树木年轮同位素钚同位素检测都显示上述阶段的大多数时间内太阳辐射能量出现下降。

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  • For earlier years, the two researchers relied on indirect data such as ice cores, tree rings and the growth patterns of corals that they culled from other people's papers.

    至于1500以前资料两位研究人员利用他人论文中挑选出的间接数据,年轮以及珊瑚生长方式

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  • The Danish findings are based on nature's own climate "archive" - ice cores and tree rings - as well as ships' log books and harbour records.

    这项丹麦发现是以自然本身气候的“档案”,树木年轮船只航海日志和港口记录为基础。

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  • The Danish findings are based on nature's own climate "archive" - ice cores and tree rings - as well as ships' log books and harbour records.

    这项丹麦发现是以自然本身气候的“档案”,树木年轮船只航海日志和港口记录为基础。

    youdao

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