搜索结果: 271-285 共查到“国际动态 气候学”相关记录867条 . 查询时间(4.226 秒)
Human-driven carbon release rate unprecedented in past 66 million years
Human-driven carbon release rate past 66 million years
2016/3/28
The earliest measurements of Earth's climate using thermometers and other tools start in the 1850s.To look further back in time, scientists investigate air bubbles trapped in ice cores, expanding the ...
海平面上升或再次引发美国“大迁徙”（图）
大迁徙 气候变化
2016/3/16
一项最新研究显示，气候变化导致的海平面不断上升，会使美国沿海地区处于危险中的居民比曾经认为的多出数百万人。大多数对因海平面上升而受到威胁的沿海居民数量进行建模的此前研究，并未将人口增长这一因素考虑进来，尽管沿海地区是该国人口增长最为快速的区域之一。在最新研究中，科学家设计了一个试图解决该问题的模型。当模型将海平面抬高时，它基于诸如海拔、历史上发生洪水的风险等地理特征，推断出了哪部分沿海陆地区域将被...
全球变暖导致极端降水增加 即便干旱地区也受到影响（图）
全球变暖 极端降水
2016/3/9
准备好迎接下雨了吗？气候变化已经开始导致全球大部分地区极端降雨和降雪的增加，哪怕在干旱地区也是如此。并且研究人员在2016年3月8日出版的《自然—气候变化》杂志上指出，这种趋势将随着全球变暖持续下去。
New findings suggest severe tornado outbreaks are increasingly common
severe tornado outbreaks increasingly common
2016/3/14
One tornado alone can cause intense destruction, but the largest impact on both death rates and economic losses stems from “outbreaks,” in which six or more tornadoes occur within a limited time.
Extreme Tornado Outbreaks Have Become More Common,Says Study
Tornado Outbreaks Become More Common
2016/3/14
Now, a new study shows that the average number of tornadoes in these outbreaks has risen since 1954, and that the chance of extreme outbreaks—tornado factories like the one in 2011—has also increased.
Amid the season known for transforming Nebraska into an outdoor ice rink, a University of Nebraska-Lincoln-led research team has predicted a new molecular form of the slippery stuff that even Mother N...
Southwest sliding into a new normal:drier conditions
Southwest sliding new normal:drier conditions
2016/2/23
This is part 13 in a series on NSF's geosciences risk and resilience interest area. Please see parts one, two, three,four, five, six, seven, eight, nine, 10,&#...
SOUTHWEST DRIES AS WET WEATHER SYSTEMS BECOME MORE RARE
SOUTHWEST DRIES WET WEATHER SYSTEMS MORE RARE
2016/2/23
The weather patterns that typically bring moisture to the southwestern United States are becoming more rare, an indication that the region is sliding into the drier climate state predicted by global m...
Uncertainties in tree-ring-based climate reconstructions probed
Uncertainties tree-ring-based climate reconstructions
2016/2/22
Current approaches to reconstructing past climate by using tree-ring data need to be improved on so that they can better take uncertainty into account, new University of Otago-led suggests.Tree growth...
A new model emerges for monsoons in a changing global climate
monsoons changing global climate
2016/2/22
A Yale University study suggests that continent-scale monsoons will adapt to climate change gradually, without suddenly losing their watery oomph.Writing in the journal Proceedings of the National Aca...
Spanish missions triggered Native American population collapse,indirect impact on climate
Spanish missions Native American population collapse climate
2016/2/22
New interdisciplinary research in the Southwest United States has resolved long-standing debates on the timing and magnitude of American Indian population collapse in the region.The severe and rapid c...
Colorado high peaks losing glaciers as climate warms
Colorado high peaks glaciers climate warms
2016/1/17
The following is part 20 in a series on the National Science Foundation's Long-Term Ecological Research (LTER) Network.Visit parts one, two, three, four, five, six, ...
本世纪末美国西南部森林或普遍死亡
美国 森林 普遍死亡
2015/12/23
近日，美国一研究团队在《自然·气候变化》杂志上发表论文提出，如果全球变暖速度再不放缓，到2100年，美国西南部的常绿针叶林将普遍死亡。
研究人员称，这一结论是综合考虑了野外实验结果、多个已证实的地区预测和多种复杂程度不同的全球模型后得出。特拉华大学地球、海洋和环境地理系副教授萨拉·劳斯彻说：“不同研究都得到了同样结果，这种一致性让我们相信这一森林死亡率的预测。”
颗粒物成云新理论有助改进预测模型
颗粒物 气候
2015/12/17
美国哈佛大学约翰·A·保尔森工程和应用科学学院的研究人员提出一项新理论：大气颗粒物呈固态或液态时会形成不同的云，进而不同程度地散射太阳辐射，从而影响全球气候变化模型预测结果的准确性。这或将为未来气候变化研究提供一个新视角。相关研究论文发表在最新一期《自然-地球科学》杂志上。
云是蒸发的水在空气粒子周围形成的水滴。在工业革命之前，这些粒子主要来源于有机物如植物，或者自然界中发生的野火、沙尘暴等。但...
Climate change is rapidly heating up lakes around the world, threatening freshwater supplies and ecosystems across the planet, according to a study spanning six continents.More than 60 scientists took...