We present a new modeling method for use in large-scale physical systems, such as the Ever-glades ecosystem. The current work that has been done in the ATLSS (Across-Trophic-Level System Simulation) project|which focuses on simulating key Everglades system components| relies on code integration. While this represents a necessary rst step in analyzing the dynamics of species within the Everglade...

We present an open source 3-D, MATLAB based, resistivity inversion package. The package uses a finite volume discretization to solve the forward partial differential equation. We include a highly efficient approach to reducing boundary effects and source electrode singularities. Solving of the forward problem is achieved by using a preconditioned bi-conjugate stabilized gradient method. For the...

The mixed explicit-implicit Galerkin finite element method developed previously by the authors is shown to be ideally suited for a wide class of problems arising in subsurface hydrology. These problems include confined saturated flow, unconfined flow under free surface conditions subject to the Dupuit assumption, flow in aquifers which are partly confined and partly unconfined, axisymmetric flo...

Water management in the Netherlands applies to a dense network of surface waters for discharge, storage and distribution, serving highly valuable land-use. National and regional water authorities develop long-term plans for sustainable water use and safety under changing climate conditions. The decisions about investments on adaptive measures are based on analysis supported by the Netherlands H...

The Rainfall-Response Aquifer and Watershed Flow Model (RRAWFLOW) is a lumped-parameter model that simulates streamflow, spring flow, groundwater level, or solute transport for a measurement point in response to a system input of precipitation, recharge, or solute injection. I introduce the first version of RRAWFLOW available for download and public use and describe additional options. The open...

Freshwater resources are fundamental for maintaining human health, agricultural production, economic activity as well as critical ecosystem functions. As populations and economies grow, new constraints on water resources are appearing, raising questions about limits to water availability. Such resource questions are not new. The specter of "peak oil"--a peaking and then decline in oil productio...

Due in part to recent progress in root genetics and genomics, increasing attention is being devoted to root system architecture (RSA) for the improvement of drought tolerance. The focus is generally set on deep roots, expected to improve access to soil water resources during water deficit episodes. Surprisingly, our quantitative understanding of the role of RSA in the uptake of soil water remai...

Determining snow water equivalent (SWE) in a fast and nondestructive way is key request for many hydrologists scientists. To this aim, microwave ground-based radars represent viable solution, but often the simultaneous measurement of both snowpack depth density (the ingredients SWE) very complex, inaccurate, or requires difficult procedures equipment. This letter presents novel radar technique ...

Abstract. Hydrological catchment models are important tools that commonly used as the basis for water resource management planning. In 1960s and 1970s, development of several relatively simple to simulate runoff started, a number so-called conceptual (or bucket-type) were suggested. these models, complex heterogeneous hydrological processes in represented by limited storage elements fluxes betw...

Weather and climate extremes such as heat waves, droughts floods are projected to become more frequent intense in several regions. There is compelling evidence indicating that changes its over time influence the living conditions of society surrounding environment across globe. This study applies max-stable models capture spatio–temporal with dependence. The objective was analyse risk drought c...