Resources » Tools

PERN eLibrary

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.

Environmental Treaties and Resource Indicators (ENTRI)

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.  ENTRI Query Service is produced by Columbia University Center for International Earth Science Information Network (CIESIN), in collaboration with the International Union for the Conservation of Nature (IUCN), United Nations Environmental Programme (UNEP), Tufts University's Fletcher School of Law and Diplomacy (FSLD), British Columbia Ministry of Environment, Lands, & Parks (BCMELP), Antarctic Cooperative Research Centre (ACRC) and American Society of International Law (ASIL).

TerraViva! SEDAC Viewer

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.

Population Estimation Service

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 GPWv3.

Ramsar Wetland Data Gateway

The Ramsar Wetlands Data Gateway provides access to spatial and tabular data relevant to Wetlands of International Importance listed under the auspices of the Ramsar Convention on Wetlands (established in Ramsar, Iran, in 1971). The Gateway seeks to enhance the accessibility and utility of data on Ramsar sites by facilitating online access, sophisticated queries, and spatial data integration. The Gateway has been developed by CIESIN in collaboration with the Ramsar Bureau and Wetlands International. The Gateway provides access to data on 1,198 Ramsar sites designated as of August 30, 2002. Please visit the Ramsar Bureau website for the most recent official listing of Ramsar sites. Visit the Wetlands International website for its contemporary Ramsar Database web presentation.

Adaptations to Climate Change in Multiple Regions and Sectors (AIACC)

The Web site synthesizes information on the sectors, systems, and groups studied, methods utilized, and key results of the 24 AIACC (Assessments of Impacts and Adaptations to Climate Change in Multiple Regions and Sectors) projects.