Daniel Moriasi

Daniel Moriasi
United States Department of Agriculture | USDA · Agricultural Research Service (ARS)

About

128
Publications
68,492
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
13,744
Citations
Introduction
Skills and Expertise

Publications

Publications (128)
Article
Full-text available
The recognized challenge of freely accessing climate and water data in East Africa poses a problem in undertaking relevant analytical studies and making informed water resources management decisions in the region. This study seeks to understand the defining characteristics of policies and distribution infrastructure, in the context of meteorologica...
Article
This review focuses on the use of Interpretable Artificial Intelligence (IAI) and eXplainable Artificial Intelligence (XAI) models for data imputations and numerical or categorical hydroclimatic predictions from nonlinearly combined multidimensional predictors. The AI models considered in this paper involve Extreme Gradient Boosting, Light Gradient...
Article
Full-text available
Short-range predictions of crop yield provide valuable insights for agricultural resource management and likely economic impacts associated with low yield. Such predictions are difficult to achieve in regions that lack extensive observational records. Herein, we demonstrate how a number of basic or readily available input data can be used to train...
Article
Quantifying spatial and temporal fluxes of phosphorus (P) within and among agricul- tural production systems is critical for sustaining agricultural production while min- imizing environmental impacts. To better understand P fluxes in agricultural land- scapes, P-FLUX, a detailed and harmonized dataset of P inputs, outputs, and budgets, as well as...
Article
Full-text available
Aeolian processes are fundamental to arid and semi-arid ecosystems, but modeling approaches are poorly developed for assessing impacts of management and environmental change on sediment transport rates over meaningful spatial and temporal scales. For model estimates to provide value, estimates of sediment flux that encapsulate intra-and inter-annua...
Article
We present a comprehensive analysis of water availability under plausible future climate conditions in a heavily irrigated agricultural watershed located in the middle section of the Rio Grande Basin in the United States Desert Southwest. Future managed streamflow scenarios (through year 2099) were selected from among 97 scenarios developed based o...
Article
Full-text available
No‐till is one of the common conservation practices implemented in the Fort Cobb Reservoir watershed (FCREW) located in central Oklahoma to improve soil and water resources while ensuring sustainable crop production. In this study, we used the recently developed Multi‐objective Evolutionary Algorithm for the Soil and Water Assessment Tool model (SW...
Article
Highlights 63% of the 24 center pivots tested in western Oklahoma had acceptable uniformity. On average, 7% of pumped water was lost before reaching the soil surface. Irrigation nonuniformity can have major, yet variable effects on water fluxes. Abstract. Nonuniform application of water through center pivots can lead to under- or over-irrigation a...
Article
Eddy fluxes collected during 2016 to 2019 from eight production-scale multi-purpose winter wheat fields (grain only, graze-grain, and graze-out), managed under conventional till (CT) and no-till (NT), were synthesized to determine seasonality, daily magnitudes, seasonal, and annual budgets of carbon dioxide (CO2) fluxes and evapotranspiration (ET),...
Article
Full-text available
Locally available organic inputs to soil, solely or in combination with inorganic fertilizers, are used to reverse declining soil fertility and improve soil organic matter content (SOM) in smallholder farms of most Sub-Saharan Africa (SSA) countries. Soil organic matter characterization can indicate soil organic input, carbon (C) sequestration pote...
Article
Although the hydrologic cycle is a continuously renewable resource, the natural rate of water delivery is highly variable. Water is made available to our society on a consistent and reliable basis largely due to flow regulation by storage reservoirs. However, under current management, the reservoir storage capacity needed for flow regulation is a n...
Article
Full-text available
Data availability and accessibility often present challenges to resolving regional water management issues. One primary input essential to models and other tools used to inform policy decisions is daily precipitation. Since observed datasets are not always present or accessible, data from the Climate Forecast System Reanalysis (CFSR) have become a...
Article
Understanding drought effects on vegetative health for crop producing locations, such as the Seferihisar‐Kavakdere region in western Turkey, is vital for water and crop management. This study utilized Landsat‐derived spectral vegetation indices, specifically Normalized Difference Vegetation Index (NDVI), Enhanced Vegetation Index (EVI), and Land Su...
Article
Full-text available
The Agricultural Policy/Environmental eXtender (APEX) is one of the hydrologic and water quality models being used in the USDA-ARS Long-Term Agroecosystem Research (LTAR) to evaluate current and develop sustainable agricultural production systems throughout the United States. Tillage practices used affect agricultural production, soil erosion, and...
Chapter
Full-text available
Soil organic carbon (SOC) is a major indicator of soil health. Globally, soil contains approximately 2344 Gt of organic carbon (OC), which is the largest terrestrial pool of OC. Through plant growth, soil health is connected with the health of humans, animals, and ecosystems. Provides ecosystem services which include climate regulation, water suppl...
Article
Full-text available
Highlights Water availability challenges have increased interest in cotton production in Oklahoma. An attempt was made to understand the feasibility of growing cotton in all counties of Oklahoma. Many areas in Oklahoma have sufficient thermal conditions for cotton production. Potential cotton lint yields generally increase from northern to southern...
Article
Full-text available
Sediment from three reservoirs located in the Little Washita River Experimental Watershed (LWREW) in Okla-homa, USA with contrasting dominant land uses were analyzed for total and extractable concentrations of arsenic (As) and chromium (Cr), and the potential ecologic risk to benthic organisms. Extractable As ranged from 0.24 to 1.21 mg kg − 1 , in...
Article
Full-text available
Water scarcity threatens the sustainability of irrigated cotton production in many regions around the world. Consequently, there is a critical need to identify and test strategies that optimize water use for cotton production. This 4-yr study evaluated the effects of three irrigation treatments (full irrigation [FI], reduced irrigation [RI] at 75%...
Article
We review over twenty years of publications on Soil and Water Assessment Tool (SWAT) applications in arid/semi-arid irrigated agricultural watersheds. Our review reveals strict dominance of the model's use for better understanding water quantity aspects of water management. While this is to be expected given the reality of water scarcity and associ...
Article
Understanding the movement and storage of water within agricultural landscapes as functions of management and climate is essential for more efficient and sustainable water use. However, knowledge of water storage and fluxes on U.S. agricultural lands is largely incomplete. The Long-Term Agroecosystem Research (LTAR) network provides a unique and ge...
Article
Full-text available
Erosion and sedimentation pose serious threats to soil and water quality worldwide, including in the Southern Great Plains of the US. To better understand these processes in agricultural landscapes, eight 1.6 ha watersheds were established and instrumented in 1976, at the USDA‐ARS Grazinglands Research Laboratory, approximately 30 miles west of Okl...
Article
Full-text available
Groundwater resources worldwide are being depleted at alarming rates since 1960 to support agriculture, industry, and domestic water demand. Water harvesting and the implementation of reduced application or more efficient irrigation technologies were identified as two of the most efficient practices to mitigate the declining patterns on groundwater...
Article
Long‐term simulations of agricultural watersheds have often been done assuming constant land use over time, but this is not a realistic assumption for many agricultural regions. This paper presents the soil and water assessment tool (SWAT)‐Landuse Update Tool (LUT), a standalone, user‐friendly desktop‐based tool for updating land use in the SWAT mo...
Article
The use of Nitrogen (N) fertilizer boosted crop production to accommodate 7 billion people on Earth in the 20th century but with the consequence of exacerbating N losses from agricultural landscapes. Land management practices that can prevent high N load are constantly being sought for mitigation and conservation purposes. This study was aimed at e...
Article
Full-text available
The multi-metric assessment of model performance in a dominantly single-domain modeling approach (i.e., surface) may not be sufficient to gauge the validity of the model to represent the hydrologic system. Consequently, rating metrics can mathematically validate model results as satisfactory even when some of the simulated hydrologic processes are...
Article
Full-text available
Although surface waterbodies are water sources for socio‐economic activities and ecosystems, their functions are threatened by sedimentation. Sedimentation of lakes and reservoirs can result in a loss of storage capacity and altered water quality. The present study assessed the sedimentation status of Lake Naivasha, Kenya, based on sediment distrib...
Article
Global sensitivity analysis can be used for assessing the relative importance of model parameters on model outputs. The sensitivity of parameters usually indicates a temporal variation due to variation in the environmental conditions (e.g., variation in weather or plant growth). In addition, the size of averaging window by which the outputs of a mo...
Article
Global sensitivity analysis can be used for assessing the relative importance of model parameters on model outputs. The sensitivity of parameters usually indicates a temporal variation due to variation in the environmental conditions (e.g., variation in weather or plant growth). In addition, the size of averaging window by which the outputs of a mo...
Article
Accurate estimation of evapotranspiration (ET) is essential to improve water use efficiency of crop production systems managed under different water regimes. The Agricultural Policy/Environmental eXtender (APEX) model was used to simulate ET using four potential ET (ETp) methods. The objectives were to determine sensitive ET parameters in dryland a...
Article
Accurate estimation of evapotranspiration (ET) is essential to improve water use efficiency of crop production systems managed under different water regimes. The Agricultural Policy/Environmental eXtender (APEX) model was used to simulate ET using four potential ET (ETp) methods. The objectives were to determine sensitive ET parameters in dryland a...
Article
Accurate estimation of evapotranspiration (ET) is essential to improve water use efficiency of crop production systems managed under different water regimes. The Agricultural Policy/Environmental eXtender (APEX) model was used to simulate ET using four potential ET (ETp) methods. The objectives were to determine sensitive ET parameters in dryland a...
Article
Global sensitivity analysis can be used for assessing the relative importance of model parameters on model outputs. The sensitivity of parameters usually indicates a temporal variation due to variation in the environmental conditions (e.g., variation in weather or plant growth). In addition, the size of averaging window by which the outputs of a mo...
Article
Full-text available
Volume 3-Issue 1 | excess N deposited on the ground via urine or feces and not captured within the soil and plant complex, negatively impacts producer income, and increases the potential for N compounds to enter the atmosphere and water resources [3,4]. In 2001, van Aardenne, et al. [5] indicated that 70% of NH 3 and 30% of N 2 O released into the...
Presentation
Full-text available
Effective irrigation management strategies at field scale can improve producer's profitability and can play a crucial role in conserving limited freshwater resources and reducing environmental contamination. To implement an efficient management strategy in irrigated fields, soil moisture status must be carefully monitored throughout the growing sea...
Article
Full-text available
The Agricultural Policy/Environmental eXtender (APEX) model has five different interfaces used to process and build simulation projects. These interfaces utilize different input databases that lead to different model default values. These values can result in different hydrologic, crop growth, and nutrient flow model outputs. This study compared st...
Presentation
Full-text available
Agricultural production in the Fort Cobb Reservoir Experimental Watershed (FCREW) has been primarily driven by center-pivot irrigation systems withdrawing water from the Rush Spring aquifer. Because of predominant coarse- and medium-textured, highly erodible soils in the area, irrigation return flows may convey applied chemicals (nutrients, pestici...
Article
Use of soft data and multiple model performance criteria in model calibration and validation are critical to ensure that environmental models capture major hydrologic and water quality processes. The Agricultural Policy/Environmental eXtender (APEX) is a hydrologic and water quality model widely used for evaluating the effect of agricultural produc...
Article
Full-text available
Meeting the ever-increasing global food, feed, and fiber demands while conserving the quantity and quality of limited agricultural water resources and maintaining the sustainability of irrigated agriculture requires optimizing irrigation management using advanced technologies such as soil moisture sensors. In this study, the performance of five dif...
Article
The Agricultural Policy/Environmental eXtender (APEX) model is used to evaluate the impact of different land management strategies associated with water availability, soil and water quality, plant growth, and economics. This article presents APEXSENSUN, an open‐source software package that automates global sensitivity analysis and assists with cali...
Article
Assessment of water resources requires reliable rainfall data, and rain gauge networks may not provide adequate spatial representation due to limited point measurements. The Tropical Rainfall Measuring Mission (TRMM) provides rainfall data at global scale, and has been used with good results. However, TRMM data are an indirect measurement of rainfa...
Article
Full-text available
Forty‐five flood control reservoirs, authorized in the Watershed Protection and Flood Prevention Act 1954, were installed by United States Department of Agriculture (USDA) between 1969 and 1982 in the Little Washita River Experimental Watershed (LWREW), located in central Oklahoma. Over time, these reservoirs have lost sediment and flood storage ca...
Article
Evapotranspiration (ET), is a major component of the hydrologic budget and therefore it requires accurate estimation. The Agricultural Policy/Environmental eXtender (APEX), a hydrologic and water quality model developed for evaluating the effect of agricultural production management practices on the environment. It has five different methods to sim...
Presentation
Full-text available
The presentation was about performance assessment of soil moisture sensors at two locations in Western Oklahoma, US
Conference Paper
The Agricultural Policy/Environmental eXtender (APEX) model has been widely applied to determine the impacts of climate and land use changes, and management of water resources. APEX is the scientific basis for the Nutrient Tracking Tool (NTT), which is used by USDA to estimate nutrient losses to the environment associated with alternative managemen...
Conference Paper
Sensitivity analysis is generally used to examine the effects of changes in one or more model parameters on model output. Knowledge gained from this analysis greatly assists in simplifying model parameterization through calibration. One of the problems with this approach is that the sensitivity of input parameters may vary when the model is used to...
Article
Due to resource constraints, long-term monitoring data for calibration and validation of hydrologic and water quality models are rare. As a result, most models are calibrated and, if possible, validated using limited measured data. However, little research has been done to determine the impact of length of available calibration data on model parame...
Article
Full-text available
The Missouri River system has a large water storage capacity, where baseflow plays an important role. Understanding historical baseflow characteristics with respect to climate and land use impacts is essential for effective planning and management of water resources in the Missouri River Basin (MORB). This study evaluated statistical trends in base...
Article
Riparian erosion is one of the major causes of sediment and contaminant load to streams, degradation of riparian wildlife habitats, and land loss hazards. Land and soil management practices are implemented as conservation and restoration measures to mitigate the environmental problems brought about by riparian erosion. This, however, requires the i...
Article
To better understand the Agricultural Policy Environmental Extender (APEX) model's strengths and limitations in simulating streamflow and water quality, we evaluated its performance under a diverse range of climatic, topographic, soil, cover, and land management conditions using three parameter settings: best professional judgment (BPJ), partially...
Article
Evaluating the effectiveness of agricultural land management practices in minimizing environmental impacts using models is challenged by the presence of inherent uncertainties during the model development stage. One issue faced during the model development stage is the uncertainty involved in model parameterization. Using a single optimized set of...
Article
Full-text available
The Soil and Water Assessment Tool (SWAT) is a versatile model presently used worldwide to evaluate water quality and hydrological concerns under varying land use and environmental conditions. In this study, SWAT was used to simulate streamflow and to estimate sediment yield and nutrients loss from the Murchison Bay catchment as a result of land us...
Article
Eastern redcedar (Juniperus virginiana L.) is a woody plant that is rapidly encroaching into the grasslands of states located in the US Great Plains. There is some concern that redcedar will adversely impact stream discharge in these water-limited areas through increased transpiration and canopy interception in comparison to that of grasslands. We...
Article
Full-text available
The Agricultural Policy Environmental eXtender (APEX) model is the scientific basis for the Nutrient Tracking Tool (NTT). NTT is an enhanced version of the Nitrogen Trading Tool, a user-friendly web-based computer program originally developed by the USDA. NTT was developed to estimate reductions in nutrient losses to the environment associated with...
Article
Hydrologic and water quality models are increasingly used to determine the environmental impacts of climate variability and land management. Due to differing model objectives and differences in monitored data, there are currently no universally accepted procedures for model calibration and validation in the literature. In an effort to develop accep...