They can do only so much to represent the full complexity of the global climate and hence may give only limited information about natural variability.
关于全球气候的复杂性他们也只能呈现这么多，因此得到关于自然变化性的信息是有限的。
Natural variability has increased the difficulty of calculating the spill's effects.
自然可变性也增加了计算溢油事故影响的难度。
There is more than enough natural variability in nature to mask a direct connection, they say.
他们表示，自然界里有着太多的自然变异使其直接联系不易被察觉。
To understand a pattern in natural variability, you can't look into the sky; you have got to study data.
你不能靠察看天象来了解自然变化的模式，你必须得研究数据。
Study finds only 30% of radical loss of summer sea ice is due to natural variability in Atlantic – and it will probably get worse.
研究发现，北极海冰夏季大面积融化可能会进一步加剧，而这其中只有30%由大西洋的自然环境变化所造成。
Climate change is all about long term trends, which are hard to detect in a weather record which has very large natural variability.
气候变化是长期的，我们不能用一种天气情况来判断说有大的气候自然变异。
But the usual causes of natural variability do not seem to explain the current trend, so scientists incline to the view that it is man-made.
但通常的自然变异原因似乎解释不了目前的趋势，所以，科学家倾向于认为这是人为的。
Kevin Trenberth of America's National Centre for Atmospheric Research wants to understand in detail the natural variability just seen.
美国国家大气研究中心凯文·特伦波斯希望详细了解已知的自然变量。
We were trying to determine how much of this was due to natural variability and therefore imply what aspect is due to man-made climate change as well.
我们正试着确定这种情况多大程度上是由自然环境的变化造成的，从而得出哪些方面是由人为气候变化造成。
Natural variability and greenhouse gas emissions (and the resulting rise in global temperatures) likely worked together to melt greater amounts of Arctic sea ice.
自然演变和导致温室效应气体的排放(这导致了全球温度的升高)似乎共同作用，使大量北冰洋海冰融化。
Timmermann suspects the actual changes in sea surface temperature are due to natural variability in the ocean that canceled out the human-caused changes predicted by the models.
Timmermann怀疑海面温度的实际变化是由于海洋的自然变化，它掩盖了根据模型预测出的人为造成的变化。
As to the role of man, the report says greenhouse gases are likely to have caused recent warming, but for the next few decades our influence will be relatively small compared to natural variability.
在人所发挥的角色上，报告表示，温室气体最近可能引起气温变暖，但未来数十年，相对于自然变化来说，人类的影响还是相对小的。
Of course, solar activity is just one natural source of climate variability. Volcanic eruptions are another, spewing gas and dust into the atmosphere.
当然，太阳活动仅仅是气候变化的一个自然因素，火山喷发出气体和尘埃进入大气层也会带来这个结果。
"It's going to be difficult to pick up the impacts of the oil spill and separate those from natural seasonal variability," he says.
他说，“很难改善油轮漏油的影响并把它与季节变化所造成的影响分开来。”
The author rather glibly moves from the descriptions of variability of these natural phenomena to the conclusion that his scientific investigations support the end of civilization at this date.
作者而高唱从变异的描述，这些自然现象的结论是，他的科学调查支持文明结束在这个日期。
One of the most universal phenomena of all natural populations is their variability in Numbers in space and time.
自然种群最普遍的现象是其数量在时间和空间上的变异性。
As the environment have an impact on the survival, evolution and growth of the natural plant, it perform regional and spatial variability.
由于自然植物的生存、进化、生长受环境影响，表现为区域性和时空变异性。
Because of the spatial-temporal variability and inhomogeneity of natural factors and the uncertainty of human activities, runoff and sediment yielding is a complicated nonlinear process.
由于自然因素的时空变异性和不均一性以及人类活动的不确定性，因此产流产沙是一个复杂的非线性过程。
Because of the spatial-temporal variability and inhomogeneity of natural factors and the uncertainty of human activities, runoff and sediment yielding is a complicated nonlinear process.
由于自然因素的时空变异性和不均一性以及人类活动的不确定性，因此产流产沙是一个复杂的非线性过程。
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