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  • 1
    Online Resource
    Online Resource
    JSTOR ; 1995
    In:  Geographical Review Vol. 85, No. 2 ( 1995-04), p. 247-
    In: Geographical Review, JSTOR, Vol. 85, No. 2 ( 1995-04), p. 247-
    Type of Medium: Online Resource
    ISSN: 0016-7428
    Language: Unknown
    Publisher: JSTOR
    Publication Date: 1995
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    detail.hit.zdb_id: 2066366-3
    SSG: 14
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  • 2
    Online Resource
    Online Resource
    American Geophysical Union (AGU) ; 2016
    In:  Reviews of Geophysics Vol. 54, No. 1 ( 2016-03), p. 93-118
    In: Reviews of Geophysics, American Geophysical Union (AGU), Vol. 54, No. 1 ( 2016-03), p. 93-118
    Abstract: Holocene ice core and ocean sediment trends are anomalous compared to previous interglaciations Paleoecology and archaeology show that early farmers emitted large amounts of CO 2 and CH 4 Large early agricultural emissions are consistent with geochemical constraints
    Type of Medium: Online Resource
    ISSN: 8755-1209 , 1944-9208
    URL: Issue
    Language: English
    Publisher: American Geophysical Union (AGU)
    Publication Date: 2016
    detail.hit.zdb_id: 2035391-1
    detail.hit.zdb_id: 209852-0
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    SSG: 16,13
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  • 3
    Online Resource
    Online Resource
    American Geophysical Union (AGU) ; 1989
    In:  Journal of Geophysical Research: Atmospheres Vol. 94, No. D15 ( 1989-12-20), p. 18393-18407
    In: Journal of Geophysical Research: Atmospheres, American Geophysical Union (AGU), Vol. 94, No. D15 ( 1989-12-20), p. 18393-18407
    Abstract: Experiments with general circulation models with no mountains, half mountains and full (modern) mountains show the sensitivity of atmospheric circulation patterns to progressive amounts of uplift. The experiments were motivated by geologic evidence for large, kilometer‐scale uplift in the late Cenozoic in southern Asia and the American west, particularly within the last 10 m.y. In January the amplitude of the mid‐latitude, upper tropospheric planetary waves increased with uplift, and the low‐level winds were progressively blocked or diverted around the topographic features. In July the progressive uplift caused monsoonlike circulations to develop in the vicinity of the Colorado and Tibetan plateaus. Atmospheric heating rates, midtroposphere vertical motion, and upper‐tropospheric planetary wave amplitudes varied approximately linearly with progressive uplift. These results suggest that geologically recent kilometer‐scale uplift may have had climatic consequences comparable in magnitude and pattern to those of earlier stages of uplift. Comparison of the simulated climatic effects of uplift with the geologic evidence for late Cenozoic climatic change, especially for the last 10 m.y., is given in accompanying papers.
    Type of Medium: Online Resource
    ISSN: 0148-0227
    Language: English
    Publisher: American Geophysical Union (AGU)
    Publication Date: 1989
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    detail.hit.zdb_id: 3094104-0
    detail.hit.zdb_id: 2130824-X
    detail.hit.zdb_id: 2016813-5
    detail.hit.zdb_id: 2016810-X
    detail.hit.zdb_id: 2403298-0
    detail.hit.zdb_id: 2016800-7
    detail.hit.zdb_id: 161666-3
    detail.hit.zdb_id: 161667-5
    detail.hit.zdb_id: 2969341-X
    detail.hit.zdb_id: 161665-1
    detail.hit.zdb_id: 3094268-8
    detail.hit.zdb_id: 710256-2
    detail.hit.zdb_id: 2016804-4
    detail.hit.zdb_id: 3094181-7
    detail.hit.zdb_id: 3094219-6
    detail.hit.zdb_id: 3094167-2
    detail.hit.zdb_id: 2220777-6
    detail.hit.zdb_id: 3094197-0
    SSG: 16,13
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  • 4
    Online Resource
    Online Resource
    American Geophysical Union (AGU) ; 1989
    In:  Journal of Geophysical Research: Atmospheres Vol. 94, No. D15 ( 1989-12-20), p. 18379-18391
    In: Journal of Geophysical Research: Atmospheres, American Geophysical Union (AGU), Vol. 94, No. D15 ( 1989-12-20), p. 18379-18391
    Abstract: Geologic evidence suggests significant increases in uplift rates and absolute elevation in several areas during the late Cenozoic, especially in the last 10 m.y. Regions of major uplift include the Tibetan Plateau and Himalayan Mountains of southern Asia; and the Sierra Nevada, Colorado Plateau, Basin and Range, Rocky Mountains, and High Plains of the American west. Uplift occurred at a scale large enough to affect regional and global climate in a number of ways, several of which we evaluate by General Circulation Model experiments in accompanying papers.
    Type of Medium: Online Resource
    ISSN: 0148-0227
    Language: English
    Publisher: American Geophysical Union (AGU)
    Publication Date: 1989
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    detail.hit.zdb_id: 3094104-0
    detail.hit.zdb_id: 2130824-X
    detail.hit.zdb_id: 2016813-5
    detail.hit.zdb_id: 2016810-X
    detail.hit.zdb_id: 2403298-0
    detail.hit.zdb_id: 2016800-7
    detail.hit.zdb_id: 161666-3
    detail.hit.zdb_id: 161667-5
    detail.hit.zdb_id: 2969341-X
    detail.hit.zdb_id: 161665-1
    detail.hit.zdb_id: 3094268-8
    detail.hit.zdb_id: 710256-2
    detail.hit.zdb_id: 2016804-4
    detail.hit.zdb_id: 3094181-7
    detail.hit.zdb_id: 3094219-6
    detail.hit.zdb_id: 3094167-2
    detail.hit.zdb_id: 2220777-6
    detail.hit.zdb_id: 3094197-0
    SSG: 16,13
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  • 5
    Online Resource
    Online Resource
    Geological Society of America ; 1984
    In:  Geological Society of America Bulletin Vol. 95, No. 4 ( 1984), p. 381-
    In: Geological Society of America Bulletin, Geological Society of America, Vol. 95, No. 4 ( 1984), p. 381-
    Type of Medium: Online Resource
    ISSN: 0016-7606
    Language: English
    Publisher: Geological Society of America
    Publication Date: 1984
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    detail.hit.zdb_id: 2008165-0
    detail.hit.zdb_id: 449720-X
    detail.hit.zdb_id: 1351-1
    SSG: 13
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  • 6
    Online Resource
    Online Resource
    Geological Society of America ; 1972
    In:  Geological Society of America Bulletin Vol. 83, No. 7 ( 1972), p. 2039-
    In: Geological Society of America Bulletin, Geological Society of America, Vol. 83, No. 7 ( 1972), p. 2039-
    Type of Medium: Online Resource
    ISSN: 0016-7606
    Language: English
    Publisher: Geological Society of America
    Publication Date: 1972
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    detail.hit.zdb_id: 2008165-0
    detail.hit.zdb_id: 449720-X
    detail.hit.zdb_id: 1351-1
    SSG: 13
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  • 7
    Online Resource
    Online Resource
    American Association for the Advancement of Science (AAAS) ; 1977
    In:  Science Vol. 196, No. 4295 ( 1977-06-10), p. 1208-1211
    In: Science, American Association for the Advancement of Science (AAAS), Vol. 196, No. 4295 ( 1977-06-10), p. 1208-1211
    Type of Medium: Online Resource
    ISSN: 0036-8075 , 1095-9203
    RVK:
    RVK:
    Language: English
    Publisher: American Association for the Advancement of Science (AAAS)
    Publication Date: 1977
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    detail.hit.zdb_id: 2066996-3
    detail.hit.zdb_id: 2060783-0
    SSG: 11
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  • 8
    Online Resource
    Online Resource
    Springer Science and Business Media LLC ; 2010
    In:  Climatic Change Vol. 99, No. 3-4 ( 2010-4), p. 351-381
    In: Climatic Change, Springer Science and Business Media LLC, Vol. 99, No. 3-4 ( 2010-4), p. 351-381
    Type of Medium: Online Resource
    ISSN: 0165-0009 , 1573-1480
    RVK:
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2010
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    detail.hit.zdb_id: 1477652-2
    SSG: 14
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  • 9
    Online Resource
    Online Resource
    Copernicus GmbH ; 2006
    In:  Climate of the Past Vol. 2, No. 1 ( 2006-07-17), p. 43-55
    In: Climate of the Past, Copernicus GmbH, Vol. 2, No. 1 ( 2006-07-17), p. 43-55
    Abstract: Abstract. The origin of the major ice-sheet variations during the last 2.7 million years is a long-standing mystery. Neither the dominant 41 000-year cycles in δ18O/ice-volume during the late Pliocene and early Pleistocene nor the late-Pleistocene oscillations near 100 000 years is a linear ("Milankovitch") response to summer insolation forcing. Both responses must result from non-linear behavior within the climate system. Greenhouse gases (primarily CO2) are a plausible source of the required non-linearity, but confusion has persisted over whether the gases force ice volume or are a positive feedback. During the last several hundred thousand years, CO2 and ice volume (marine δ18O) have varied in phase at the 41 000-year obliquity cycle and nearly in phase within the ~100 000-year band. This timing rules out greenhouse-gas forcing of a very slow ice response and instead favors ice control of a fast CO2 response. In the schematic model proposed here, ice sheets responded linearly to insolation forcing at the precession and obliquity cycles prior to 0.9 million years ago, but CO2 feedback amplified the ice response at the 41 000-year period by a factor of approximately two. After 0.9 million years ago, with slow polar cooling, ablation weakened. CO2 feedback continued to amplify ice-sheet growth every 41 000 years, but weaker ablation permitted some ice to survive insolation maxima of low intensity. Step-wise growth of these longer-lived ice sheets continued until peaks in northern summer insolation produced abrupt deglaciations every ~85 000 to ~115 000 years. Most of the deglacial ice melting resulted from the same CO2/temperature feedback that had built the ice sheets. Several processes have the northern geographic origin, as well as the requisite orbital tempo and phasing, to be candidate mechanisms for ice-sheet control of CO2 and their own feedback.
    Type of Medium: Online Resource
    ISSN: 1814-9332
    Language: English
    Publisher: Copernicus GmbH
    Publication Date: 2006
    detail.hit.zdb_id: 2217985-9
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  • 10
    Online Resource
    Online Resource
    American Geophysical Union (AGU) ; 1990
    In:  Paleoceanography Vol. 5, No. 3 ( 1990-06), p. 367-382
    In: Paleoceanography, American Geophysical Union (AGU), Vol. 5, No. 3 ( 1990-06), p. 367-382
    Abstract: In this paper we present results of an atmospheric general circulation model (GCM) experiment in which Arctic sea ice limits were substantially reduced in all months. March sea ice limits were set equivalent to modern September limits, and all sea ice was removed in September. Sea ice coverage for other months varied between these two extremes. This climate sensitivity experiment makes predictions about mean northern hemisphere atmospheric conditions (including temperature, pressure, wind patterns, and precipitation) consistent with these boundary constraints. The major effects of reduced sea ice limits are observed in winter. They include large regional warming of the circum‐Arctic region, northward migration of the Icelandic low pressure system, and strengthening of the Azores high. Changes in net heating over the North Atlantic Ocean suggest that increases in sea surface temperatures and salinities in this region would also accompany reductions in Arctic sea ice limits. In the wind field, a weakening of the polar easterlies and an intensification of cyclonic circulation over the Norwegian‐Greenland Sea suggest that surface water exchange between the Atlantic and Arctic would increase when sea ice limits are reduced. However, zonally averaged changes in strength of the westerlies or upper level jet stream are minimal. The late Pliocene cooling of the North Atlantic Ocean and North American Arctic margin may have been linked in part to the development of perennial sea ice cover.
    Type of Medium: Online Resource
    ISSN: 0883-8305 , 1944-9186
    Language: English
    Publisher: American Geophysical Union (AGU)
    Publication Date: 1990
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