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  • Springer  (65)
  • Nature Publishing Group  (7)
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  • 1
    Publication Date: 2021-06-25
    Description: A multi-model set of atmospheric simulations forced by historical sea surface temperature (SST) or SSTs plus Greenhouse gases and aerosol forcing agents for the period of 1950–1999 is studied to identify and understand which components of the Asian–Australian monsoon (A–AM) variability are forced and reproducible. The analysis focuses on the summertime monsoon circulations, comparing model results against the observations. The priority of different components of the A–AM circulations in terms of reproducibility is evaluated. Among the subsystems of the wide A–AM, the South Asian monsoon and the Australian monsoon circulations are better reproduced than the others, indicating they are forced and well modeled. The primary driving mechanism comes from the tropical Pacific. The western North Pacific monsoon circulation is also forced and well modeled except with a slightly lower reproducibility due to its delayed response to the eastern tropical Pacific forcing. The simultaneous driving comes from the western Pacific surrounding the maritime continent region. The Indian monsoon circulation has a moderate reproducibility, partly due to its weakened connection to June–July–August SSTs in the equatorial eastern Pacific in recent decades. Among the A–AM subsystems, the East Asian summer monsoon has the lowest reproducibility and is poorly modeled. This is mainly due to the failure of specifying historical SST in capturing the zonal land-sea thermal contrast change across the East Asia. The prescribed tropical Indian Ocean SST changes partly reproduce the meridional wind change over East Asia in several models. For all the A–AM subsystem circulation indices, generally the MME is always the best except for the Indian monsoon and East Asian monsoon circulation indices.
    Description: Published
    Description: 1051-1068
    Description: 3.7. Dinamica del clima e dell'oceano
    Description: JCR Journal
    Description: open
    Keywords: CLIVAR C20C ; Asian-Australian monsoon circulation ; AGCM ; Reproducibility ; 01. Atmosphere::01.01. Atmosphere::01.01.02. Climate
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 2
    Publication Date: 2017-04-04
    Description: Understanding the historical and future response of the global climate system to anthropogenic emissions of radiatively active atmospheric constituents has become a timely and compelling concern. At present, however, there are uncertainties in: the total radiative forcing associated with changes in the chemical composition of the atmosphere; the effective forcing applied to the climate system resulting from a (temporary) reduction via ocean-heat uptake; and the strength of the climate feedbacks that subsequently modify this forcing. Here a set of analyses derived from atmospheric general circulation model simulations are used to estimate the effective and total radiative forcing of the observed climate system due to anthropogenic emissions over the last 50 years of the twentieth century. They are also used to estimate the sensitivity of the observed climate system to these emissions, as well as the expected change in global surface temperatures once the climate system returns to radiative equilibrium. Results indicate that estimates of the effective radiative forcing and total radiative forcing associated with historical anthropogenic emissions differ across models. In addition estimates of the historical sensitivity of the climate to these emissions differ across models. However, results suggest that the variations in climate sensitivity and total climate forcing are not independent, and that the two vary inversely with respect to one another. As such, expected equilibrium temperature changes, which are given by the product of the total radiative forcing and the climate sensitivity, are relatively constant between models, particularly in comparison to results in which the total radiative forcing is assumed constant. Implications of these results for projected future climate forcings and subsequent responses are also discussed.
    Description: Published
    Description: 1461-1475
    Description: 3.7. Dinamica del clima e dell'oceano
    Description: JCR Journal
    Description: open
    Keywords: atmospheric general circulation models ; climate forcing ; climate sensitivity ; 01. Atmosphere::01.01. Atmosphere::01.01.02. Climate ; 01. Atmosphere::01.01. Atmosphere::01.01.04. Processes and Dynamics ; 01. Atmosphere::01.01. Atmosphere::01.01.05. Radiation
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 3
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 307 (1984), S. 224-228 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] At the fossil-pollen-defined Cretaceous–Tertiary boundary in the Raton Basin of New Mexico and Colorado, an iridium abundance anomaly and excess scandium, titanium, and chromium are associated with a thin ash or dust fallout bed (now kaolinitic clay) that was preserved in freshwater coal ...
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 163 (1949), S. 839-840 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN view of the recent communication by Snoek and Fast1 on their observation of the metastable states in well-annealed nickel, it may be of interest to record a similar effect which was noted in the course of some investigations on nickel magnetostrictive oscillators. These ...
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 264 (1976), S. 239-240 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Both the Ap and vorticity area index exhibit annual variations and long term trends. The annual variations and long term trends were removed from both data sets and the resultant series normalised so that the average of each index is zero. We have calculated least-squares estimates of the Fourier ...
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 190 (1961), S. 1001-1001 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] It is observed that, in general, the use of carbon or carbonized silica boats facilitates single crystal growth, whereas ingots grown in silica boats exhibit various degrees of wetting and subsequent polycrystallinity. On the other hand, despite reduced wetting, material grown in carbon boats is ...
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 184 (1959), S. 1803-1804 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Under existing conditions with jet aircraft, it is no longer the men who fly the aircraft who are subjected to the greatest noise but the attendant ground, staff. Those in the worst situation are the men employed on the flight deck of an aircraft carrier dur ing aircraft launching operations, when ...
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Colloid & polymer science 252 (1974), S. 624-624 
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Entomologia experimentalis et applicata 29 (1981), S. 49-59 
    ISSN: 1570-7458
    Keywords: Diptera ; Culicidae ; Culex nigripalpus ; Ovarian development ; Nulliparous ; Parous ; “Resorbed follicles” ; Gonotrophic dissociation ; Blood-feeding ; Temperature effect on ovarian development ; Disease implication
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Résumé Le développement ovarien de Culex nigripalpus Th. a été étudié sur de femelles sauvages ou d'élevage. Des femelles cherchant à s'alimenter de sang — morphologiquement identifiables comme ayant ou non jamais pondu, à “follicules ovariens résorbés” (par oppostion aux femelles à follicules dégénérés) — ont été récoltées toute l'année dans la nature, ce qui a révélé le cycle annuel d'activité ovarienne. Un plus grand nombre de femelles avec des “follicules résorbés” a été récolté pendant les mois les plus froids que pendant les mois les plus chauds. Des expériences de laboratoire ont montré que les “follicules ovariens résorbés” s'observent chez des femelles alimentées en sucroses quand elles sont privées d'un repas de sang à l'émergence. Ces “follicules ovariens résorbés” étaient fonctionnels, puisque la majorité d'entre eux ont commencé à se développer et à murir après alimentation en sang jusqu'à satiété. Les femelles, après un repas de sang partiel, ont des types semblables de développement ovarien, indépendemment de la température à laquelle elles étaient conservées. Les implications de la présence de femelles avec des “follicules ovariens résorbés” sur la transmission des germes pathogènes ont été discutées.
    Notes: Abstract Ovarian development was investigated in wild and colonized Culex nigripalpus Theobald females. Blood-seeking females with morphologically distinct nulliparous, parous and “resorbed ovarian follicles” (as opposed to females with degenerating follicles) were collected from the field all year, indicating year around gonoactivity. During the cooler months a larger number of females with “resorbed follicles” were collected from the field than in warmer months. Laboratory experiments showed that “resorbed ovarian follicles” occurred in sucrose fed females when deprived of a blood meal after emergence. These ‘resorbed ovarian follicles” were functional, since most of them began to develop and mature after the females took a blood meal to repletion. Among females fed a partial blood meal, some did not begin ovarian development and, therefore, exhibited gonotrophic dissociation. Females fed partial blood meals had similar patterns of ovarian development, irrespective of temperature at which they were maintained. Implications of occurrence of females with ”resorbed ovarian follicles” and disease transmission are discussed.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Bulletin of environmental contamination and toxicology 35 (1985), S. 308-313 
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
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