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289 Aktuelle Fachpublikationen zum Thema temperature

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Contribution of solar radiation to decadal temperature variability over land [Earth, Atmospheric, and Planetary Sciences]

10.09.2013 | Kaicun Wang; Robert E. Dickinson, Proceedings of the National Academy of Sciences current issue, 2013

Global air temperature has become the primary metric for judging global climate change. The variability of global temperature on a decadal timescale is still poorly understood. This paper examines further one suggested hypothesis, that variations in solar radiation reaching the surface (Rs) have ...

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Correction for Wang et al., Variations in atmospheric CO2 growth rates coupled with tropical temperature [Correction]

10.09.2013 | Proceedings of the National Academy of Sciences current issue, 2013

ENVIRONMENTAL SCIENCES Correction for “Variations in atmospheric CO2 growth rates coupled with tropical temperature,” by Weile Wang, Philippe Ciais, Ramakrishna R. Nemani, Josep G. Canadell, Shilong Piao, Stephen Sitch, Michael A. White, Hirofumi Hashimoto, Cristina Milesi, and Ranga B. Myneni, ...

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Surface chemistry allows for abiotic precipitation of dolomite at low temperature [Microbiology]

03.09.2013 | Jennifer A. Roberts; Paul A. Kenward; David A. Fowle; Robert H. Goldstein; Luis A. González; David S. Moore, Proceedings of the National Academy of Sciences current issue, 2013

Although the mineral dolomite is abundant in ancient low-temperature sedimentary systems, it is scarce in modern systems below 50 °C. Chemical mechanism(s) enhancing its formation remain an enigma because abiotic dolomite has been challenging to synthesize at low temperature in laboratory ...

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A physical explanation of the temperature dependence of physiological processes mediated by cilia and flagella [Ecology]

03.09.2013 | Stuart Humphries, Proceedings of the National Academy of Sciences current issue, 2013

The majority of biological rates are known to exhibit temperature dependence. Here I reveal a direct link between temperature and ecologically relevant rates such as swimming speeds in Archaea, Bacteria, and Eukaryotes as well as fluid-pumping and filtration rates in many metazoans, and show that ...

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State-dependent climate sensitivity in past warm climates and its implications for future climate projections [Earth, Atmospheric, and Planetary Sciences]

27.08.2013 | Rodrigo Caballero; Matthew Huber, Proceedings of the National Academy of Sciences current issue, 2013

Projections of future climate depend critically on refined estimates of climate sensitivity. Recent progress in temperature proxies dramatically increases the magnitude of warming reconstructed from early Paleogene greenhouse climates and demands a close examination of the forcing and feedback ...

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Isothermal amplification method for next-generation sequencing [Genetics]

27.08.2013 | Zhaochun Ma; Raymond W. Lee; Bin Li; Paul Kenney; Yufang Wang; Jonathan Erikson; Swati Goyal; Kaiqin Lao, Proceedings of the National Academy of Sciences current issue, 2013

We report an approach for generating immobilized monoclonal templates for next- generation sequencing applications. Our isothermal amplification method is based on a template walking mechanism using a pair of low-melting temperature (Tm) solid-surface homopolymer primers and a low-Tm solution ...

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Hot climates, high sensitivity [Earth, Atmospheric, and Planetary Sciences]

27.08.2013 | R. T. Pierrehumbert, Proceedings of the National Academy of Sciences current issue, 2013

Climate sensitivity is the Holy Grail of climate science; because CO2 is one of the principal control knobs for climate, sensitivity to changes in atmospheric CO2 concentration is of particular interest. This sensitivity is typically characterized by the change in global mean temperature per ...

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Time-dependent climate sensitivity and the legacy of anthropogenic greenhouse gas emissions [Earth, Atmospheric, and Planetary Sciences]

20.08.2013 | Richard E. Zeebe, Proceedings of the National Academy of Sciences current issue, 2013

Climate sensitivity measures the response of Earth’s surface temperature to changes in forcing. The response depends on various climate processes that feed back on the initial forcing on different timescales. Understanding climate sensitivity is fundamental to reconstructing Earth’s climatic ...

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The multimillennial sea-level commitment of global warming [Environmental Sciences]

20.08.2013 | Anders Levermann; Peter U. Clark; Ben Marzeion; Glenn A. Milne; David Pollard; Valentina Radic; Alexander Robinson, Proceedings of the National Academy of Sciences current issue, 2013

Global mean sea level has been steadily rising over the last century, is projected to increase by the end of this century, and will continue to rise beyond the year 2100 unless the current global mean temperature trend is reversed. Inertia in the climate and global carbon system, however, ...

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Loss of function of cinnamyl alcohol dehydrogenase 1 leads to unconventional lignin and a temperature-sensitive growth defect in Medicago truncatula [Plant Biology]

13.08.2013 | Qiao Zhao; Yuki Tobimatsu; Rui Zhou; Sivakumar Pattathil; Lina Gallego-Giraldo; Chunxiang Fu; Lisa A. Jackson; Micha ..., Proceedings of the National Academy of Sciences current issue, 2013

There is considerable debate over the capacity of the cell wall polymer lignin to incorporate unnatural monomer units. We have identified Tnt1 retrotransposon insertion mutants of barrel medic (Medicago truncatula) that show reduced lignin autofluorescence under UV microscopy and red coloration ...

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