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  1. 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...

  2. 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...

  3. 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,...

  4. AgMIP GEOSHARE Tool with iData Integration Demo

    06 Mar 2015 | Tools | Contributor(s): Nelson Benjamin Villoria, Joshua Elliott, Christoph Mí_ller, Jaewoo Shin, Christopher Panza, Lan Zhao

    Aggregate yield shocks provided by the AgMIP's Global Gridded Crop Modeling Initiative (Ag-GRID) from their original 30x30 min resolution to any user specified level

  5. AgMIP Tool: A GEOSHARE tool for aggregating outputs from the AgMIP's Global Gridded Crop Modeling Initiative (Ag-GRID)

    09 Jul 2014 | Tools | Contributor(s): Nelson Benjamin Villoria, joshua elliott, Christoph Müller, Jaewoo Shin, Lan Zhao

    Aggregate the yield shocks provided by the AgMIP project from their original 30x30 min resolution to any user specified level.

  6. Climate change mitigation policies and poverty in developing countries

    31 Jul 2014 | Publications | Contributor(s): Zekarias Hussein, Tom Hertel, Alla Golub

    Mitigation of the potential impacts of climate change is one of the leading policy concerns of the 21st century. However, there continues to be heated debate about the nature, the content and, most importantly, the impact of the policy actions needed to limit greenhouse gas emissions. One...

  7. Climate Scenario Aggregator

    10 Nov 2014 | Tools | Contributor(s): Nelson Benjamin Villoria, Joshua Elliott, Christoph Müller, Jaewoo Shin, Lan Zhao

    Climate Scenario Aggregator

  8. 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...

  9. 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.

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

    22 Jan 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

  11. 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.

  12. iData Packaging Tool

    24 May 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.

  13. 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...

  14. 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. 

  15. Magmatic Forcing of Cenozoic Climate?

    13 Aug 2019 | Downloads | Contributor(s): Pietro Sternai

    This is the supporting models for the contribution "AGU Centennial Grand Challenge: Magmatic Forcing of Cenozoic Climate?" [Paper #2018JB016460R] submitted to Journal of Geophysical Research - Solid Earth.

  16. Marker Set

    06 Nov 2018 | Tools | Contributor(s): Rob Campbell

    Create iData Marker Set definition files (.ims)

  17. Metadata Exporter

    03 Apr 2018 | Tools | Contributor(s): Rajesh Kalyanam

    Export geospatial file metadata to the ISO-19115 standard

  18. National Initiatives Gauge Farmer Perceptions of Climate Change (press release)

    05 Mar 2013 | Publications | Contributor(s): John Kriva, Melissa Widhalm

  19. New science of climate change impacts on agriculture implies higher social cost of carbon

    22 Nov 2017 | Publications | Contributor(s): Frances C. Moore, Uris Lantz C Baldos, Tom Hertel, Delavane Diaz

    Despite substantial advances in climate change impact research in recent years, the scientific basis for damage functions in economic models used to calculate the social cost of carbon (SCC) is either undocumented, difficult to trace, or based on a small number of dated studies. Here we present...

  20. POL 520/EAS 591 Great issues: climate and policy

    14 Nov 2010 | Courses

    The course POL 520/EAS 591, “Great issues: climate and policy”, is designed to better educate students in the use and misuse of modeling across disciplines, so that they will be better builders and consumers of integrated, complex models of coupled human/natural systems in their own careers. More...