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  1. A copula-based joint deficit index for droughts

    31 Mar 2010

    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

    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

    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. Connecting Communities Through HUBzero

    03 Oct 2014 | Online Presentations

  5. Data-driven Collaboration Environments - Integrating HUBzero and iRODS

    15 Sep 2015 | Publications | Contributor(s): Lan Zhao, Carol Song

    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...

  6. Developing Open Source Geospatial Data Analysis Building Blocks Software

    26 Oct 2017 | Publications | Contributor(s): Lan Zhao, Carol Song

    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.

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

    08 Aug 2011 | Downloads

    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...

  8. Effects of Drought on Water Quality in Streams

    08 Aug 2011 | Downloads

    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,...

  9. Enabling Scientific Collaboration Using HUBzero Platform

    03 Oct 2014 | Online Presentations

  10. Global Croplands: A new dataset for year 2005

    03 Oct 2014 | Online Presentations

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

    04 Feb 2021 | Tools

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

  12. 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.

  13. iData Packaging Tool

    12 Jun 2018 | Tools | Contributor(s): Lan Zhao, Carol Song

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

  14. iData Tutorial

    22 Jul 2016 | Teaching Materials | Contributor(s): Lan Zhao, Carol Song

    *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...

  15. iData Walkthrough

    21 Oct 2017 | Online Presentations | Contributor(s): Lan Zhao, Carol Song

    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. 

  16. IFPRI's Spatial Production Allocation Model (SPAM)

    03 Oct 2014 | Online Presentations

  17. International trade buffers the impact of future irrigation shortfalls

    03 Oct 2014 | Online Presentations

  18. Mapping multiple cropping and irrigation in India

    03 Oct 2014 | Online Presentations

  19. Marker Set

    06 Nov 2018 | Tools | Contributor(s): Lan Zhao, Carol Song

    Create iData Marker Set definition files (.ims)

  20. Metadata Exporter

    03 Apr 2018 | Tools | Contributor(s): Lan Zhao, Carol Song

    Export geospatial file metadata to the ISO-19115 standard