Lamyaa Negm

North Carolina State University, College of Engineering, Post-Doc

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Address: Raleigh, North Carolina, United States

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Srinivasulu Ale

Lulin Xue

National Center for Atmospheric Research (NCAR)

North Carolina State University

Wayne Meyer

University of Adelaide

John J Ramirez Avila

Mississippi State University

Tyndall, John C [NREM]

Iowa State University

Gary Sands

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Papers by Lamyaa Negm

DRAINMOD–DSSAT model for simulating hydrology, soil carbon and nitrogen dynamics, and crop growth for drained crop land

Agricultural Water Management

Integrated agricultural systems modeling represents an effective research tool to meet the evolvi... more Integrated agricultural systems modeling represents an effective research tool to meet the evolving challenges facing agricultural production and environmental quality. An integrated, process-based model was developed to simulate the impacts of the changing environment and different water and farming management practices on the hydrology, water quality, and crop growth and yield for artificially drained cropping systems. The new model; named DRAINMOD–DSSAT, was developed by integrating three different process based models: the hydrological model, DRAINMOD; the soil carbon and nitrogen (N) dynamics model; DRAINMOD-NII, and selected crop modules of the DSSAT–CSM model; CROPGRO and CERES-Maize. The integration of the three component models is implemented at the source code level and allows for daily interactions and feedback among simulated climatic conditions, soil water and nitrogen, and crop growth. DRAINMOD–DSSAT performance was evaluated using a 10-yr dataset collected from a corn...

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The AgMIP Coordinated Climate-Crop Modeling Project (C3MP): Methods and Protocols

ICP Series on Climate Change Impacts, Adaptation, and Mitigation, 2014

Dear C3MP Contributors, As a follow--up to our May 15 th newsletter, we would like to offer you a... more Dear C3MP Contributors, As a follow--up to our May 15 th newsletter, we would like to offer you a copy of our book chapter draft "The Coordinated Climate--Crop Modeling Project (C3MP): Protocols and Methods", to be included in the Handbook of Climate Change and Agroecosystems, Vol. 3 (editors Daniel Hillel and Cynthia Rosenzweig). We are happy to announce that all participants who have contributed simulations results can be co--authors on this book chapter. This chapter details the updated C3MP Protocols, which we have worked with you to develop and improve over the last year. We have also provided an overall description of the project, and summarized our current participation status, and the diversity of locations, crops, and models. Furthermore, we use our final section as a call for publication ideas, topics, and authors. We actively continue to update all summary tables and maps displaying the number and locations of contributed experiments, and will do so again

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Development and Application of the Forestry Version of DRAINMOD-NII

2009 Reno, Nevada, June 21 - June 24, 2009, 2009

A forestry version of DRAINMOD-NII has been developed to simulate carbon and nitrogen dynamics in... more A forestry version of DRAINMOD-NII has been developed to simulate carbon and nitrogen dynamics in drained forested lands under different climatic conditions and forest management practices. The new model simulates the main hydrological and biogeochemical processes in drained forested ecosystems. The forest growth component of the model estimates net primary production using radiation use efficiency methods and allocates fixed carbon using speciesdependent allometric relationships. It simulates the growth of mixed or uneven-aged stands by accounting for resource (water, nutrient, and light) competition among different species. It simulates the effects of forest management practices such as thinning, pruning, harvesting and regenerating, fertilization, and prescribed burning on carbon and nitrogen cycling. A simple case study is given to demonstrate the use and the scope of the newly developed model.

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