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1.
Climate change is real There will always be uncertainty in understanding a system as complex as the world's climate. However there is now strong evidence that significant global warming is occurring1.  相似文献   

2.
<正>Global warming is driven by the Earth’s energy imbalance(EEI):our planet traps more and more heat due to continuous increasing greenhouse gases.From the energy perspective,the global warming is actually ocean warming,since ocean stores more than 90%of the trapped heat.Therefore,ocean heat content(OHC)change is a fundamental indicator of global warming,and direct measurement of OHC will provide a direct evidence for climate change.  相似文献   

3.
Mainly due to the increasing emissions of greenhouse gases from human activities, the climate is warming up quickly on a global scale. In line with the theory of IPCC, atmospheric temperatures in China could be projected to rise by 2.3-3.3℃, and precipitation by 5-7% by 2050; by 2100, the temperature might rise by 3.9-6.0℃, and precipitation by 11-17%. Meanwhile extreme climatic events will also see a significant increase. In the book titled Evolution and Prediction of Climate and Environment（Qin, et al, 2005）,  相似文献   

4.
The variability and dynamic mechanism of the East Asian monsoon climate is a major scientific puzzle in the exploration of global change. As early as in the late 1990s, a research team led by Prof. AN Zhisheng from the CAS Institute of Earth Environment started their work in this topic, with an objective of improving the hypothesis of monsoon-controlled East Asian environment and advancing the basic studies of past global changes in eastern Asia.  相似文献   

5.
China is one of the countries that are often badly hit by climate-related disasters. To address the ever greater frequency of such disasters, a result of the unequivocal trend of global warming, the Chinese government should step up efforts and take strategic measures, suggests a panel of the CAS Academic Divisions in a consultative report concerning the impact of climatic change on China.  相似文献   

6.
<正>Plants, though passive and still as it appears, are considered to be quite active to engage with other living things, particularly in the root part that faces relatively more complicated surroundings. In a recent report in Science, researchers from the Institute of Genetics and Developmental Biology, Chinese Academy of Sciences and their cooperators from the John Innes Center, UK unraveled new evidence that plants can  相似文献   

7.
Global warming goes on
The climate has always been changing. Here we refer to the changes concerning the current global warming, which is unprecedented both in terms of the rate at which the warming takes place and the extent to which human activities exert impacts on it.  相似文献   

8.
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9.
The temperature of the upper reaches of the Yellow River, the second longest river in China,is clearly related to the worldwide warming trend, according to a study conducted by CAS researchers and their colleagues from Administration of Hydrology and Water Resources of the Upper Reaches of the Yellow River. They warn that, due to the possible temperature hike and drastic decline in local precipitation, the runoff in the reaches may face a trend of continued decrease over the next decade.  相似文献   

10.
正The global surface temperature has showed a significant warming trend since the mid1990s.According to statistics of the World Meteorological Organization,the global mean surface temperature during 2011-2015 is higher by 0.57℃than that during 1961-1990.This trend has led to the occurrence of hot summers and extreme events,and the  相似文献   

11.
A research group led by Prof.Zhu Rixiang from the CAS Institute of Geology and Geophysics and their U.S. collaborators have come up with convincing evidence that early human ancestors lived at high latitudes of north China in northeast Asia as early as about 1.66 million years ago.  相似文献   

12.
正On the early morning of December 22,2016,China joined Japan and the U.S.to become a third country in the world to have launched a satellite that is dedicated to the precise measurements of carbon dioxide from space.Sent from Jiuquan Satellite Launching Center to about 700 km above the Earth,the620 kg TanSat aims to acquire CO_2 concentrations in the global atmosphere and identify carbon sources and sinks  相似文献   

13.
<正>Zika virus(ZIKV),a flavivirus,is causing global concern,as accumulating evidence suggests that its infection is associated with microcephaly in newborns and neurological complications,such as Guillain-Barrésyndrome,in adults;and currently no approved countermeasure against ZIKV infections is available.This concern is further emphasized by  相似文献   

14.
Walking is arguably the most frequent movement in bipeds （e.g., humans） and quadrupeds. Walking direction conveys the disposition and intention of a biological entity, to which humans are highly sensitive since birth. Aside from global configuration, local motion itself has been found to play a critical role in biological motion perception, suggesting a specialized brain mechanism that acts as a ＂life motion detector＂ for processing local biological motion information.  相似文献   

15.
The acoustic decrepitation method heats a small monomineralic sample and counts pressure impulses as the inclusions burst when they develop high internal pressures. For aqueous fluids, the decrepitation temperature is correlated with the homogenisation temperature, but gas rich fluids give a distinct and characteristic low temperature decrepitation peak which can be used to recognize gas rich fluid inclusions. This information is useful in exploration for Au deposits, which are frequently associated with CO2 rich and sometimes CH4 rich fluids. This distinctive decrepitation occurs because the CO2 rich inclusion fluids expand according to the gas law and develop internal pressures high enough to burst the host mineral grain at temperatures well below their homogenisation temperatures. In contrast, aqueous fluids condense to a liquid and vapour phase during post-entrapment cooling. Upon subsequent heating their internal pressures do not increase significantly until after homogenisation to a single phase occurs and hence they do not decrepitate ＂prematurely＂ as gas rich inclusions do. This behaviour is usually regarded as an annoyance in conventional microthermometric homogenisation studies, but can readily be used as an exploration aid to find mineralisation deposited from such gas rich fluids. Decrepitation results on samples from Cowra Ck, NSW, Australia, which have also been microthermometrically measured for CO2 content, show that amounts of less than 5 mole % CO2 are easily distinguished by decrepitation and amounts as low as 1 mole % CO2 may be determinable. Examples of the use of acoustic decrepitation in the study of 6 gold mines in the Shandong and Hebei provinces of China are discussed.  相似文献   

16.
<正>Graphene triggered a global research upsurge since the researcher in the University of Manchester exfoliated it from graphite through"scotch tape"method in 2004.Graphene is regarded as a new potential material in the"Postsilicon Era"for making nano-sized transistors and circuits.Breakthroughs in this regard ensued in just a few years.Many kinds of products made by graphene are available now,and industrialization of graphene is underway.1.Major ST connotation and significance Graphene is a kind of new material composed by carbon atoms through sp2 hybrid orbital,which is featured  相似文献   

17.
Our ancestor may raise a toast with the earliest known wine while havinga piece of music from the oldestknown musical instruments about9,000 years ago. Physical evidence has recentlyconfirmed that ancient Chinesewere producingfermented,wine-likedrinks from rice, honey and fruit asearly as in 7,000 B.C. according toscientists who are examining resi-dues of the ancient shards of pot-tery from a Stone Age site in northChina, where the oldest playableinstruments — flutes made frombones — were …  相似文献   

18.
正A well preserved,nearly complete skeleton of a new extinct species of pheasant that lived between 7 and 11 million years ago adjacent to the northeastern edge of the Tibetan Plateau in China preserves the oldest evidence of a bird having modified and specialized its vocalization sounds(songs or calls).Everyone is familiar with birds singing and making a variety of sounds,such as roosters crowing at dawn.However,little direct evidence exists for how  相似文献   

19.
<正>The chemical industry is one of the key sectors in China.Most chemical processes heavily rely on fossil fuels as energy resources and feedstocks,which inevitably emits a huge amount of CO2.With the global initiative and actions of carbon neutrality,the energy revolution of renewable energy replacing fossil fuels is further promoted towards the ultimate goal that fossil fuels will be fully replaced in the future [1].  相似文献   

20.
Ocean is the largest carbon reservoir on Earth. By taking up about one-third of all human carbon emissions, it has effectively reduced atmospheric carbon dioxide and eased global climate change. Scientists have studied extensively on the mechanisms of C02 absorption in the ocean, or the so-called ＂carbon pumps＂, from physical to chemical and biological pumps. Microbes, traditionally regarded as organic matter decomposers, had been long neglected until a few years ago Prof. JIAO Nianzhi from Xiamen University proposed the concept ＂microbial carbon pump （MCP）＂ illustrating that these tiny marine inhabitants are also producers of refractory dissolved organic carbon, a persistent form of matter which can be stored in the ocean for thousands of years and thus constitute an ideal carbon pool. Today, the MCP concept has been widely accepted as a promising sequestration strategy, and Prof. JIAO is working hand in hand with scientists from all over the world under the Scientific Committee on Oceanic Research （SCOR） Working Group 134 to better understand how to use these magic creatures for preserving carbon in the deep blue.  相似文献   

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