Search Tools

ENTRI Website

The Environmental Treaties and Resource Indicators (ENTRI) Query Service is a comprehensive web-based application for accessing environmental treaty texts and treaty status data such as signatories, parties, former parties (if applicable), year of agreement and enforcement and other related information. Through the treaty locator and country explorer search capabilities, treaties that focus on land use/and cover change, desertification, global climate change, stratospheric ozone depletion, transboundary air pollution, conservation of biological diversity, deforestation, ocean and their living resources, trade and the environment, and population can be retrieved. In addition, selected remote sites can be queried to retrieve large document collections related to environmental treaties. Useful tools and related links are also provided. 

PERN eLibrary Website

The PERN eLibrary is an important and unique reference tool for classic population-environment literature; journal articles; conference and working papers; relevant data sets; and educational resources. The eLibrary database is annotated and includes bibliographic citation information, Internet links to the materials, and keywords.

Mapping Tools

Population Estimation Service Website

The Population Estimation Service is a Web-based service for estimating population totals and related statistics within a user-defined region. It enables users of a wide variety of map clients and tools to quickly obtain estimates of the number of people residing in specific areas without having to download and analyze large amounts of spatial data. The service accepts polygons that define areas of interest, then returns population totals, land area, quality measures, and basic parametric statistics for the requested polygons based on Gridded Population of the World (GPWv3) data. 

SEDAC Map Client

This map viewer allows a user to view all available SEDAC WMS layers by theme or by region. It’s based on the OpenLayers library, which provides a JavaScript API—making it easy to incorporate maps from a variety of sources into your Web page or application. Currently, OpenLayers has support for OGC WMS layers, navigation, icons, markers, and layer selection.

TerraViva! Website

This map viewer and standalone software application (Microsoft Windows-based) uses a powerful data-viewing engine and tools to enable the visualization and integration of hundreds of socioeconomic and environmental variables and layers, including a range of satellite-based data. TerraViva! is of primary interest to researchers and analysts working in a variety of areas, from environmental and ecological sciences to the social and health sciences.