63 research outputs found
Estimation of effective hydrologic properties of soils from observations of vegetation density
Get PDFA one-dimensional model of the annual water balance is reviewed. Improvements are made in the method of calculating the bare soil component of evaporation, and in the way surface retention is handled. A natural selection hypothesis, which specifies the equilibrium vegetation density for a given, water limited, climate soil system, is verified through comparisons with observed data. Comparison of CDF's of annual basin yield derived using these soil properties with observed CDF's provides verification of the soil-selection procedure. This method of parameterization of the land surface is useful with global circulation models, enabling them to account for both the nonlinearity in the relationship between soil moisture flux and soil moisture concentration, and the variability of soil properties from place to place over the Earth's surface
Estimation of effective hydrologic properties of soils from observations of vegetation density
Get PDFAn existing one-dimensional model of the annual water balance is reviewed. Slight improvements are made in the method of calculating the bare soil component of evaporation, and in the way surface retention is handled. A natural selection hypothesis, which specifies the equilibrium vegetation density for a given, water limited, climate-soil system, is verified through comparisons with observed data and is employed in the annual water balance of watersheds in Clinton, Ma., and Santa Paula, Ca., to estimate effective areal average soil properties. Comparison of CDF's of annual basin yield derived using these soil properties with observed CDF's provides excellent verification of the soil-selection procedure. This method of parameterization of the land surface should be useful with present global circulation models, enabling them to account for both the non-linearity in the relationship between soil moisture flux and soil moisture concentration, and the variability of soil properties from place to place over the Earth's surface
Transition-State Charge Transfer Reveals Electrophilic, Ambiphilic, and Nucleophilic Carbon−Hydrogen Bond Activation
Full text linkSynthesis, Characterization, and Catalytic Properties of New Electrophilic Iridium(III) Complexes Containing the ( R
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Structural and Chemical Properties of Zwitterionic Iridium Complexes Featuring the Tripodal Phosphine Ligand [PhB(CH 2
No full textAncillary Ligand Effects on C-H Bond Activation Reactions Promoted by b-Diiminate Iridium Complexes
No full textCarbon−Fluorine Bond Activation Coupled with Carbon−Hydrogen Bond Formation α to Iridium: Kinetics, Mechanism, and Diastereoselectivity
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Intermolecular and Intramolecular, Platinum-Catalyzed, Acceptorless Dehydrogenative Coupling of Hydrosilanes with Aryl and Aliphatic Methyl C-H Bonds
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