نتایج جستجو برای: in 20th century
تعداد نتایج: 16989550 فیلتر نتایج به سال:
A scientific framework is described in which scientists are cast as problem-solvers, and problems as solved when data are mapped to models. This endeavor is limited by finite attentional capacity which keeps depth of understanding complementary to breadth of vision; and which distinguishes the process of science from its products, scientists from scholars. All four aspects of explanation descri...
Fire dynamics during the 20th century simulated by the Community Land Model S. Kloster, N. M. Mahowald, J. T. Randerson, P. E. Thornton, F. M. Hoffman, S. Levis, P. J. Lawrence, J. J. Feddema, K. W. Oleson, and D. M. Lawrence Earth and Atmospheric Sciences, Cornell University, Ithaca, NY, USA Department of Earth System Science, University of California, Irvine, CA, USA Climate and Ecosystem Pro...
Osborn and Briffa (Reports, 10 February 2006, p. 841) identified anomalous periods of warmth or cold in the Northern Hemisphere that were synchronous across 14 temperature-sensitive proxies. However, their finding that the spatial extent of 20th-century warming is exceptional ignores the effect of proxy screening on the corresponding significance levels. After appropriate correction, the signif...
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