scispace - formally typeset
Open AccessJournal ArticleDOI

A Conterminous United States Multilayer Soil Characteristics Dataset for Regional Climate and Hydrology Modeling

D. A. Miller, +1 more
- 01 Jan 1998 - 
- Vol. 2, Iss: 2, pp 1-26
Reads0
Chats0
TLDR
In this paper, the authors developed a multilayer soil characteristics dataset for the conterminous United States (CONUS-SOIL) that specifically addresses the need for soil physical and hydraulic property information over large areas.
Abstract
Soil information is now widely required by many climate and hydrology models and soil-vegetation-atmosphere transfer schemes. This pa- per describes the development of a multilayer soil characteristics dataset for the conterminous United States (CONUS-SOIL) that specifically addresses the need for soil physical and hydraulic property information over large areas. The State Soil Geographic Database (STATSGO) developed by the U.S. De- partment of Agriculture-Natural Resources Conservation Service served as the starting point for CONUS-SOIL. Geographic information system and Perl computer programming language tools were used to create map coverages of soil properties including soil texture and rock fragment classes, depth-to-bed- rock, bulk density, porosity, rock fragment volume, particle-size (sand, silt, and clay) fractions, available water capacity, and hydrologic soil group. In- terpolation procedures for the continuous and categorical variables describing these soil properties were developed and applied to the original STATSGO data. In addition to any interpolation errors, the CONUS-SOIL dataset reflects the limitations of the procedures used to generate detailed county-level soil

read more

Citations
More filters
Journal ArticleDOI

The evolution of process-based hydrologic models: historical challenges and the collective quest for physical realism

TL;DR: The diversity in hydrologic models has historically led to great controversy on the "correct" approach to process-based hydrology modeling, with debates centered on the adequacy of process parameterizations, data limitations and uncertainty, and computational constraints on model analysis as discussed by the authors.
Journal ArticleDOI

High-performance Earth system modeling with NASA/GSFC’s Land Information System

TL;DR: The Land Information System software (LIS) has been developed to support high-performance land surface modeling and data assimilation, and establishes a framework for easy interchange of subcomponents, such as land surface physics, input/output conventions, and data Assimilation routines.
Journal ArticleDOI

Sensitivity of grassland productivity to aridity controlled by stomatal and xylem regulation

TL;DR: In this paper, remote-sensing data reveal that productivity is more sensitive to atmospheric moisture than precipitation deficits, especially in grasslands where plants loosely regulate water use and vary in their regulation of water use.
Journal ArticleDOI

Conterminous U.S. and Alaska Forest Type Mapping Using Forest Inventory and Analysis Data

TL;DR: In this article, classification trees were used to model forest type groups and forest types for the conterminous United States and Alaska and the overall accuracies for Alaska for the forest type group and forest type were 78 percent (Kappa � 0.69) and 67 percent (kappa - 0.61), respectively.
Journal ArticleDOI

Development of a China Dataset of Soil Hydraulic Parameters Using Pedotransfer Functions for Land Surface Modeling

TL;DR: In this paper, the authors developed a dataset of the soil hydraulic parameters associated with two empirical soil functions (i.e., a water retention curve and hydraulic conductivity) using multiple pedotransfer functions (PTFs).
References
More filters
Journal ArticleDOI

A closed-form equation for predicting the hydraulic conductivity of unsaturated soils

TL;DR: Van Genuchten et al. as mentioned in this paper proposed a closed-form analytical expression for predicting the hydraulic conductivity of unsaturated soils based on the Mualem theory, which can be used to predict the unsaturated hydraulic flow and mass transport in unsaturated zone.
Journal ArticleDOI

Empirical equations for some soil hydraulic properties

TL;DR: In this paper, a power function relating soil moisture and hydraulic conductivity is used to derive a formula for the wetting front suction required by the Green-Ampt equation.
Journal ArticleDOI

Estimating generalized soil-water characteristics from texture

TL;DR: In this article, the results from the recent statistical analyses were used to calculate water potentials for a wide range of soil textures, then these were fit by multivariate analyses to provide continuous potential estimates for all inclusive textures.
Journal ArticleDOI

A simple method for determining unsaturated conductivity from moisture retention data

Gaylon S. Campbell
- 01 Jun 1974 - 
TL;DR: In this article, the unsaturated hydraulic conductivity function for soil can be calculated directly from a moisture retention function and a single measurement of hydraulic conductivities at some water content, and agreement of k calculated using this procedure with experimentally determined conductivities for five soil samples was found to be at least as good as with other calculation procedures.
Related Papers (5)