A copula-based joint deficit index for droughts

31 Mar 2010 | Contributor(s): Rao S Govindaraju

Current drought information is based on indices that do not capture the joint behaviors of hydrologic variables. To address this limitation, the potential of copulas in characterizing droughts from multiplevariables is explored in this study. Starting from the standardized index (SI) algorithm, a...

A review of global-local-global linkages in economic land-use/cover change models

04 May 2019 | Contributor(s): Tom Hertel, Thales A P West, Jan Börner, Nelson Benjamin Villoria

Global change drivers of land-use/cover change (LUCC) like population dynamics, economic development, and climate change are increasingly important to local sustainability studies, and can only be properly analyzed at fine-scales that capture local biophysical and socio-economic conditions. When...

A seasonal-scale climatological analysis correlating spring tornadic activity with antecedent fall–winter drought in the southeastern United States

14 Jun 2011 | Publications | Contributor(s): Dev Niyogi

Using rain gauge and satellite-based rainfall climatologies and the NOAA Storm PredictionCenter tornado database (1952–2007), this study found a statistically significant tendency forfall–winter drought conditions to be correlated with below-normal tornado days the followingspring in north...

A spatio-temporal drought analysis for the Midwestern US

15 Jun 2009 | Publications | Contributor(s): Rao S Govindaraju, Dev Niyogi

Droughts are prolonged abnormalities of moisture deficits that vary widely across temporal and spatial scales. Many hydrometeorologic variables are used to monitor the status of a drought. However, because of the dependence structure between all affecting variables under various temporal windows,...

Assessing the Impacts of Climate Mitigation Policies on Poverty in Developing Countries

31 Jul 2014 | Online Presentations | Contributor(s): Tom Hertel

This is the presentation made to the African Agriculture GIS week conference.BioPrepared by Thomas Hertel with assistance from Zekarias Hussein, based on collaboration with Alla Golub, Ben Henderson, Pierre Gerber, Steve Rose and Brent SohngenCreditsFunding from the FAO and the Center for Global...

Assessing the Impacts of Climate Mitigation Policies on Poverty in Developing Countries

01 Aug 2014 | Online Presentations | Contributor(s): Tom Hertel

This is the presentation made to the African Agriculture GIS week conference.BioPrepared by Thomas Hertel with assistance from Zekarias Hussein, based on collaboration with Alla Golub, Ben Henderson, Pierre Gerber, Steve Rose and Brent SohngenCreditsFunding from the FAO and the Center for Global...

Connecting Communities Through HUBzero

03 Oct 2014 | Online Presentations | Contributor(s): Nelson Benjamin Villoria, Joshua Elliott, Hongjun Choi, Lan Zhao

Data-driven Collaboration Environments - Integrating HUBzero and iRODS

15 Sep 2015 | Publications | Contributor(s): Rajesh Kalyanam

As part of an effort to establish a community-based data sharing environment, we previously developed a HUBzero-based web component, iData. Using the open-source data management software, iRODS, iData  provides hub users and tools with the ability to publish, manage, discover...

Developing Open Source Geospatial Data Analysis Building Blocks Software

26 Oct 2017 | Publications | Contributor(s): JIngbo Wu

This is an article published at Journal of Purdue Undergraduate Research by Jingbo Wu describing his summer intern work as part of the GABBs project.

DURI Summer Intern Project: Drought related data and tools: development and integration

08 Aug 2011 | Downloads | Contributor(s): Yuan Xia

A poster presented at the DURI student recognition luncheon, July 28, 2011. Yuan Xia, a junior from Computer Science, Purdue University, completed his summer internship with the Scientific Solutions group at RCAC. He helped integrated various maps and datasets into the DRINET. The live page can...

Effects of Drought on Water Quality in Streams

08 Aug 2011 | Downloads | Contributor(s): Rashad Riley, Indrajeet Chaubey, Lan Zhao

A research poster presented at the DDAD2011 symposium. It describes the preliminary results of a study on drought impact on water quality conducted over the Massie Creek sub-watershed in Ohio. The Messie Creek data is now available on DRINET and access is through the iDATA tool.Rashad Riley1,...

Enabling Scientific Collaboration Using HUBzero Platform

03 Oct 2014 | Online Presentations | Contributor(s): Lan Zhao

Energy prices will play an important role in determining global land use in the twenty first century

31 Jul 2014 | Publications | Contributor(s): Jevgenijs Steinbuks, Tom Hertel

Global land use research to date has focused on quantifying uncertainty effects of three major drivers affecting competition for land: the uncertainty in energy and climate policies affecting competition between food and biofuels, the uncertainty of climate impacts on agriculture and forestry,...

Global Croplands: A new dataset for year 2005

03 Oct 2014 | Online Presentations | Contributor(s): Dany Plouffe, Navin Ramankutty, Lisa Ribaudo, Mark Friedl, Damien Sulla-Menashe

Graphical User Interface for the California Food-Energy-Water System (CALFEWS) simulation model

04 Feb 2021 | Tools | Contributor(s): Andrew L Hamilton, Harrison Zeff, Keyvan Malek, Jonathan Herman, Jonathan Cohen, Josue Medellin-Azuara, Patrick M. Reed, Gregory W. Characklis

Graphical User Interface for the California Food-Energy-Water System (CALFEWS) simulation model

iData Cheat Sheet

19 Jun 2015 | Teaching Materials | Contributor(s): Lan Zhao, Carol Song

This document is a quick note that guides new iData users through the steps of registering a hub account, creating a new dataset, uploading some files, and sharing with others.

iData Packaging Tool

12 Jun 2018 | Tools | Contributor(s): Rajesh Kalyanam, Rob Campbell (contributor), Lan Zhao (contributor)

Package iData files into a BagIT bag for subsequent import to a different project.

iData Tutorial

22 Jul 2016 | Teaching Materials | Contributor(s): Abilene Thiele Concepcion Perez

*Note that the number before each step is the time on the YouTube video below where it shows how each step is done. Click on "View Resource" on the top right to watch the video.Start iData [0:05] Go to http://mygeohub.org/idata to load the iData application. It starts with...

iData Walkthrough

21 Oct 2017 | Online Presentations | Contributor(s): Rajesh Kalyanam

This video demonstrates the features of the GABBs iData data management building block such as automatic metadata extraction and geospatial file preview. It also walks through how iData files can be used in both hub tools and publications. 

IFPRI's Spatial Production Allocation Model (SPAM)

03 Oct 2014 | Online Presentations | Contributor(s): Ulrike Wood-Sichra, Liangzhi You