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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. 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,...

  7. 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

  8. LANDPARAM

    20 Jul 2015 | Tools | Contributor(s): Jing Liu, Nelson Benjamin Villoria (contributor)

    A tool to aggregate cropland supply and land transformation elasticities

  9. Market-mediated environmental impacts of biofuels

    31 Jul 2014 | Publications | Contributor(s): Tom Hertel, Wallace E. Tyner

    This paper surveys the evidence on market-mediated environmental impacts of biofuels, with special attention to the indirect greenhouse gas emissions stemming from land cover change in the wake of increased demand for biofuel feedstocks. We find clear evidence that market mediated land use...

  10. Metadata and DRINET

    11 Dec 2009 | Online Presentations

    Jake Carlson, Purdue University Libraries

  11. Metadata Exporter

    20 Mar 2018 | Tools | Contributor(s): Rajesh Kalyanam

    Export geospatial file metadata to the ISO-19115 standard

  12. Metadata for Climate Research Unit Time Series (CRU TS) 2.1

    16 May 2012 | Downloads | Contributor(s): Lan Zhao

    The CRU TS 2.1 data-set comprises 1224 monthly grids of observed climate, for the period 1901-2002, and covering the global land surface at 0.5 degree resolution. There are nine climate variables available: daily mean, minimum and maximum temperature, diurnal temperature range, precipitation, wet...

  13. Metadata for Harvested Area and Yields of 175 crops (M3-Crops Data)

    15 May 2012 | Downloads | Contributor(s): Jake R Carlson

    This data collection is composed of land use data sets, generated by combining national, state, and county level census statistics along with a global data set of croplands from countries around the world for the year 2000. The resulting land use data sets depict circa the year 2000 the...

  14. Metadata for Historical Averages of Precipitation and Temperature Data

    15 May 2012 | Downloads | Contributor(s): Jake R Carlson

    This dataset is composed of plots of historical time series of average precipitation (measured in inches) and temperature (measured in fahrenheit degrees) data with five year tendencies for each climate division (CD) within Illinois, Indiana, Kentucky, Michigan, Ohio, and Wisconsin. Data are...

  15. Metadata for Indiana Hourly Precipitation Data (NCDC)

    15 May 2012 | Downloads | Contributor(s): Jake R Carlson

    This dataset contains hourly precipitation data from 144 COOP raingagues located in Indiana (NCDC TD3240 dataset). The main purpose of this dataset is to provide for at-site rainfall frequency analysis. Several data processing manners were taken:(1) For nearby stations with non-overlapping...

  16. Metadata for Indiana Stream Flow Data

    15 May 2012 | Downloads | Contributor(s): Jake R Carlson

    The United States Geological Survey (USGS) daily streamflow dataset is the source of this dataset. Streamflow data are subjected to human interference, and therefore data contain both natural and regulated flows. This practice does not cause serious problems in flood frequency analysis (flows are...

  17. PEGASUS (Predicting Ecosystem Goods And Services Using Scenarios)

    14 Jul 2014 | Tools | Contributor(s): Delphine, Navin Ramankutty, I Luk Kim, Rajesh Kalyanam

    A GEOSHARE tool for conducting live simulations using PEGASUS (Predicting Ecosystem Goods And Services Using Scenarios)

  18. Root Zone Water Quality Model

    06 Jun 2022 | Tools | Contributor(s): Balaji Sesha Srikanth Pokuri, Anupam Bhar (contributor)

    Whole-system model for studying crop production and environmental quality under current and changing climate conditions., developed by USDA-ARS

  19. SPAM in the Clouds

    25 Jul 2014 | Tools | Contributor(s): Liangzhi You, Ulrike Wood-Sichra, Jingyu Song, Nelson Benjamin Villoria, Paul Preckel, Jaewoo Shin, Lan Zhao

    Spatial Production Allocation Model (SPAM) 2005 Beta Version

  20. U2U Accomplishment Highlights (April 2011 - Sept 2012)

    17 Oct 2012 | Publications | Contributor(s): Melissa Widhalm, John Kriva

    This document provides a brief overview of the top accomplishments from the U2U project from April 2011 - Sept 2012.