Results 21 to 30 of about 47,504 (266)
A tropical mechanism for Northern Hemisphere deglaciation [PDF]
Geochemistry, Geophysics, Geosystems, 2003 We investigate the role of the tropics in the melting and reforming of the Laurentide ice sheet on glacial timescales using an atmospheric general circulation model. It is found that warming of tropical sea surface temperatures (SSTs) from glacial boundary conditions, as observed at the end of glacial periods, causes a large increase in summer ...
Rodgers, K. B. +4 more
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Ice particle production in mid-level stratiform mixed-phase clouds observed with collocated A-Train measurements [PDF]
Atmospheric Chemistry and Physics, 2018 Collocated A-Train CloudSat radar and CALIPSO lidar measurements between 2006 and 2010 are analyzed to study primary ice particle production characteristics in mid-level stratiform mixed-phase clouds on a global scale.
D. Zhang +6 more
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Synthesis of the Northern Hemisphere of Amphidinolide H2 [PDF]
Synthesis, 2006 The stereoselective synthesis of a fully functionalized northern hemisphere of the marine natural product amphidinolide H2 is described. A vinylogous Mukaiyama aldol reaction and enzymatic desymmetrization of a meso compound are the key steps in the fragment syntheses. A stereoselective acetate aldol coupling and a 1,3-anti-reduction of the resulting β-
Liesener, F.P., Jannsen, U., Kalesse, M.
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Copepods in the Northern Hemisphere [PDF]
Nature, 1925 IT has long been recognised that the distribution of freshwater copepods has been profoundly influenced by the incidence of the glacial period, since the lake-districts which they inhabit are to a large extent postglacial catchment basins. It so happens that there is a general correspondence between the three leading sub-orders and the three principal ...
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On the characteristics of astronomical refraction in the northern hemisphere [PDF]
Symposium - International Astronomical Union, 1979 The astronomical refraction mainly depends on the vertical structure or the height profile of atmospheric density. Concerning the vertical structure of atmospheric density, various hypotheses were presented during the last century. Among them Newton's hypothesis of equal temperature and Ivory's one that temperature diminishes at a uniform rate with ...
C. Sugawa, N. Kikuchi
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Numerical simulations of oceanic oxygen cycling in the FAMOUS Earth-System model: FAMOUS-ES, version 1.0 [PDF]
Geoscientific Model Development, 2014 Addition and validation of an oxygen cycle to the ocean component of the FAMOUS climate model are described. At the surface, FAMOUS overestimates northern hemisphere oxygen concentrations whereas, at depth, the southern hemisphere values are too low ...
J. H. T. Williams +3 more
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Mesoscale temperature fluctuations in the Southern Hemisphere stratosphere [PDF]
Atmospheric Chemistry and Physics, 2008 Isentrope surfaces in the Southern Hemisphere stratosphere reveal that air parcels undergo mesoscale temperature fluctuations that depend on latitude and season.
B. L. Gary
doaj
Pre-LGM Northern Hemisphere ice sheet topography [PDF]
Climate of the Past, 2013 We here reconstruct the paleotopography of Northern Hemisphere ice sheets during the glacial maxima of marine isotope stages (MIS) 5b and 4.We employ a combined approach, blending geologically based reconstruction and numerical modeling, to arrive at ...
J. Kleman +4 more
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Natural Frequencies of Levodopa‐Induced Dyskinesia in Parkinson's Disease
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objectives Abnormal involuntary movements, known as dyskinesias, are common complications of levodopa treatment in patients with Parkinson's disease and can significantly impair quality of life. The underlying pathophysiology remains unclear, and current therapeutic options are limited.
Ioannis U. Isaias +3 more
wiley +1 more source
Change in Earth’s solar climate over the period from 1900 to 2100
Solar-Terrestrial PhysicsThe paper presents the results of the analysis of changes in Earth’s solar climate over the period from 1900 to 2100. It has been determined that the annual meridional gradient of irradiation intensity from 1900 to 2100 and latitudinal differences in the
Fedorov Valery, Frolov Denis
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