Environmental research is inherently interdisciplinary, drawing on the natural sciences (ecology, atmospheric science, chemistry, biology), the social sciences (environmental policy, environmental economics, environmental justice), engineering (pollution control, renewable energy systems), and law (environmental regulation, land use). A student writing a research paper on water quality, for example, might need hydrological data from a federal agency, peer-reviewed articles from environmental science journals, regulatory information from the Environmental Protection Agency, and policy analysis from an environmental research organization. This guide, part of iResearchNet’s How to Do Research series, covers the academic databases, government data portals, and research tools that U.S. college and university students need for research papers on ecology, environmental science, climate, natural resources, and environmental policy. For topic ideas, see iResearchNet’s Environmental Research Paper Topics.
Academic Databases for Environmental Research
GreenFILE and Environment Complete
Environment Complete (EBSCO) is the most extensive subscription database for environmental research, indexing more than 2,400 journals — including full text for more than 1,000 — across environmental science, ecology, pollution, renewable energy, natural resource management, marine science, and environmental policy. GreenFILE, also from EBSCO, provides a more focused collection on the human impact on the environment, covering topics such as sustainable development, green building, renewable energy, recycling, and environmental policy. Most university libraries subscribe to one or both through EBSCOhost.
Web of Science and Scopus
Web of Science (Clarivate) and Scopus (Elsevier) are the two major multidisciplinary citation databases used in the natural sciences. Both index environmental science journals extensively and provide citation tracking that allows students to trace the influence of a study through subsequent research. Web of Science’s Science Citation Index and Social Sciences Citation Index together cover both the natural science and policy dimensions of environmental research. Students who identify a seminal article on their topic can use citation tracking to find all subsequent articles that cited it — a technique that efficiently maps the evolution of a research area.
Additional Databases
Several discipline-specific databases serve particular areas of environmental research. PubMed indexes environmental health research, toxicology, and the health effects of pollution and climate change. AGRICOLA (National Agricultural Library) covers agricultural science, forestry, soil science, and natural resource management. GeoRef (American Geosciences Institute) indexes geological and earth science literature, including hydrology, geochemistry, and paleoclimatology. JSTOR archives complete runs of major environmental and ecology journals and is essential for foundational research. Google Scholar provides broad indexing and citation tracking; students should configure Library Links to connect it to their university’s subscriptions.
Government Data Sources
Environmental research depends heavily on monitoring data — measurements of air quality, water quality, temperature, emissions, biodiversity, and other variables collected systematically over time. U.S. federal agencies are the primary producers of this data, and most of it is freely accessible online.
Environmental Protection Agency (EPA)
The Environmental Protection Agency (EPA) is the primary federal regulatory agency for environmental protection in the United States. The EPA maintains several major data systems that environmental researchers use extensively.
The Toxics Release Inventory (TRI) tracks the release and disposal of more than 700 toxic chemicals by industrial facilities across the United States. TRI data is freely accessible and searchable by facility, chemical, geographic area, and industry, making it essential for research papers on industrial pollution, environmental justice, and community health impacts.
AirNow provides real-time air quality data across the United States, including the Air Quality Index (AQI) and concentrations of criteria pollutants (ozone, particulate matter, carbon monoxide, sulfur dioxide, and nitrogen dioxide). The EPA’s Air Quality System (AQS) provides historical air monitoring data for longer-term trend analysis. ECHO (Enforcement and Compliance History Online) provides data on facility-level compliance with environmental regulations, enforcement actions, and inspection results.
The Greenhouse Gas Reporting Program provides facility-level data on greenhouse gas emissions from large industrial sources in the United States. The Inventory of U.S. Greenhouse Gas Emissions and Sinks, updated annually, provides the official national accounting of greenhouse gas emissions by sector, gas type, and source — the authoritative reference for any research paper on U.S. climate emissions.
National Oceanic and Atmospheric Administration (NOAA)
The National Oceanic and Atmospheric Administration (NOAA) is the primary federal source of climate, weather, and ocean data. NOAA’s National Centers for Environmental Information (NCEI) archives and provides access to one of the world’s largest collections of atmospheric, coastal, geophysical, and oceanic data.
For climate research, NOAA provides temperature records, precipitation data, sea level measurements, Arctic sea ice extent, and atmospheric CO2 concentration data through multiple portals. The Climate at a Glance tool provides time series data for temperature and precipitation at the national, state, regional, and city level, allowing students to analyze climate trends at any geographic scale. The Global Monitoring Laboratory at Mauna Loa publishes the atmospheric CO2 concentration data (the Keeling Curve) that is among the most cited datasets in climate science.
For marine and coastal research, NOAA provides data on ocean temperature, sea level, coral reef health, fisheries stocks, and coastal hazards through its various data portals.
U.S. Geological Survey (USGS)
The U.S. Geological Survey (USGS) provides data on water resources, land use, natural hazards, ecosystems, and mineral resources. The National Water Information System (NWIS) provides real-time and historical data on streamflow, groundwater levels, and water quality from thousands of monitoring stations across the country. The National Land Cover Database (NLCD) tracks land use and land cover change across the United States through satellite imagery analysis. For research papers on water quality, watershed management, flooding, or land use change, USGS data provides the empirical foundation.
NASA
NASA provides satellite-derived environmental data through several platforms. NASA Earthdata provides access to thousands of datasets covering atmosphere, land, ocean, and cryosphere, collected by NASA’s earth-observing satellites. The Goddard Institute for Space Studies (GISS) produces one of the major global temperature datasets used in climate research. Giovanni provides a web-based interface for visualizing and analyzing NASA satellite data without requiring specialized software — a useful tool for students who need environmental data but lack experience with geographic information systems.
Additional Government and International Sources
The U.S. Fish and Wildlife Service manages data on endangered species, wildlife habitats, and conservation areas. The U.S. Forest Service provides data on forest inventory, wildfire occurrence, and forest health. The Energy Information Administration (EIA) publishes data on energy production, consumption, prices, and emissions by fuel type — essential for research on energy policy and the energy-climate nexus.
At the international level, the Intergovernmental Panel on Climate Change (IPCC) produces assessment reports that synthesize the state of climate science, and its reports are the most widely cited source in climate change research. The United Nations Environment Programme (UNEP) publishes reports on a wide range of global environmental issues. The World Resources Institute (WRI) provides data tools and analysis on climate, energy, forests, water, food, and urban development.
Environmental Law and Policy Resources
Environmental research frequently requires engagement with the regulatory and legal frameworks that govern pollution control, resource management, and land use. The major U.S. environmental statutes — the Clean Air Act, the Clean Water Act, the National Environmental Policy Act (NEPA), the Endangered Species Act, the Resource Conservation and Recovery Act (RCRA), and CERCLA (the Superfund law) — are codified in the United States Code and accessible through the Office of the Law Revision Counsel. EPA regulations implementing these statutes appear in Title 40 of the Code of Federal Regulations, accessible through GovInfo.
Environmental impact statements (EISs) required under NEPA are available through the EPA’s EIS database, which indexes final environmental impact statements filed by federal agencies. The Congressional Research Service publishes nonpartisan analyses of environmental legislation and policy that provide accessible summaries of complex regulatory issues.
For legal scholarship on environmental law, HeinOnline provides full-text access to environmental law journals, and the Environmental Law Institute publishes the Environmental Law Reporter, a leading source of legal analysis on environmental regulation and litigation.
Key Journals in Environmental Research
The leading general environmental science journals include Environmental Science & Technology (published by the American Chemical Society), Nature Climate Change, Nature Sustainability, Global Environmental Change, and Environmental Research Letters. Science and Nature frequently publish high-impact environmental research alongside their other content.
Specialized journals serve particular subfields. Ecology and Ecological Applications (published by the Ecological Society of America) cover ecological research and its application to environmental management. Journal of Environmental Management covers the intersection of environmental science and management practice. Environmental Health Perspectives (published by the National Institute of Environmental Health Sciences) covers the health effects of environmental exposures. Climate Change publishes interdisciplinary research on climate causes, impacts, and responses. Energy Policy covers energy economics and energy-environment interactions. Environmental Politics and Environmental Policy and Governance cover the political and policy dimensions of environmental issues.
Students should also be aware of review publications that synthesize environmental research. The Annual Review of Environment and Resources provides authoritative review articles on major environmental topics. IPCC assessment reports, while not journals, function as the definitive literature reviews in climate science and are extensively cited in academic work.
Research Methods in Environmental Science
Environmental research employs a wide range of methods depending on the discipline and the research question.
Natural science approaches include field studies (collecting samples and measurements in natural environments), laboratory analysis (analyzing chemical composition, toxicity, or biological responses under controlled conditions), remote sensing (using satellite or aerial imagery to measure land cover, deforestation, ice extent, or atmospheric composition), and modeling (building mathematical representations of environmental systems to simulate future conditions under different scenarios). Climate models, hydrological models, and ecological models are central tools in environmental research, and students writing about topics that involve modeling should understand the basic principles — including the difference between projections (conditional on assumed scenarios) and predictions (unconditional forecasts).
Social science approaches include policy analysis (examining the design, implementation, and effects of environmental regulations), economic valuation (estimating the monetary value of ecosystem services, the costs of pollution, or the benefits of mitigation), survey research (measuring public attitudes toward environmental issues or willingness to pay for environmental goods), and environmental justice analysis (examining whether environmental burdens are distributed equitably across racial, ethnic, and socioeconomic groups). The EPA’s EJScreen tool provides demographic and environmental data at the census-tract level that students can use for environmental justice research.
Mixed-methods approaches that combine natural science data with social science analysis are increasingly common and valued in environmental scholarship. A paper on the health effects of air pollution in a particular metropolitan area, for example, might combine EPA air monitoring data (quantitative natural science), health outcome data from the CDC (quantitative public health), and interviews with community members (qualitative social science).
Working with Environmental Data
Environmental datasets often require more technical preparation than the datasets students encounter in other social science fields. Several practical considerations apply when working with environmental data in a research paper.
Understanding Spatial Data
Much environmental data is inherently spatial — it is tied to specific geographic locations, and spatial relationships between data points are often central to the analysis. Air quality varies from one monitoring station to another. Water contamination affects downstream areas differently than upstream areas. Land cover changes in one watershed have consequences for another. Geographic Information Systems (GIS) software — ArcGIS (commercial, available at many universities) and QGIS (free, open-source) — allow students to visualize, analyze, and map spatial environmental data. Many U.S. universities offer GIS workshops through their libraries or geography departments, and students writing papers that involve spatial analysis should take advantage of these resources.
For students who do not need full GIS capability, several web-based tools provide spatial data visualization without specialized software. The EPA’s EJScreen overlays environmental and demographic data on interactive maps. NOAA’s Climate at a Glance provides mapped climate data. The USGS National Map provides topographic, hydrologic, and land cover data with interactive visualization. These tools allow students to generate maps, identify geographic patterns, and download data for specific regions without installing software.
Understanding Time Series Data
Environmental data is frequently organized as time series — repeated measurements of the same variable at regular intervals over time. Temperature records, atmospheric CO2 concentrations, species population counts, and pollution monitoring data are all time series. Analyzing time series data requires attention to trends (long-term directional changes), variability (short-term fluctuations around the trend), seasonality (regular cyclical patterns within each year), and anomalies (unusual departures from expected values). Students should be cautious about drawing conclusions from short segments of time series data, as natural variability can produce apparent trends over short periods that do not reflect genuine long-term changes. Climate scientists, for example, typically use thirty-year or longer baselines to characterize climate trends precisely because shorter periods are dominated by natural variability.
Data Quality and Uncertainty
Environmental measurements are subject to uncertainty from instrument error, sampling bias, spatial interpolation (estimating values between measurement points), and temporal gaps (missing data from periods when monitoring was interrupted). Professional environmental datasets typically include metadata — documentation that describes how the data was collected, what quality control procedures were applied, and what known limitations exist. Students should read the metadata before using a dataset and should report relevant limitations in their papers. Acknowledging uncertainty is a hallmark of credible scientific writing; presenting environmental data as though it were perfectly precise undermines rather than strengthens the paper’s credibility.
Scientific Consensus, Peer Review, and Controversy
Environmental topics — particularly climate change, genetically modified organisms, pesticide regulation, and energy policy — are often subjects of public controversy that does not reflect the state of the scientific literature. Students writing environmental research papers should ground their arguments in the peer-reviewed literature and should distinguish between genuine scientific uncertainty (where researchers disagree about the interpretation of evidence) and manufactured controversy (where non-scientific actors dispute findings that the scientific community considers well established).
The IPCC’s assessment reports provide the most authoritative guide to the state of climate science, including explicit ratings of the confidence and likelihood associated with each major conclusion. These ratings — based on the consistency of the evidence, the number and quality of supporting studies, and the degree of agreement among experts — model the kind of careful epistemic calibration that strong research papers should employ. A student writing about climate impacts should cite the IPCC’s assessed confidence levels rather than simply asserting that a claim is “proven” or “uncertain.”
When evaluating sources that take contrary positions on environmental questions, students should assess the source’s methodology, the venue of publication (peer-reviewed journal versus advocacy website versus blog), the author’s credentials and potential conflicts of interest, and whether the claims have been subjected to the scrutiny of the scientific community. A single contrarian study does not outweigh dozens of studies reaching the opposite conclusion, any more than a single confirming study proves a hypothesis. The weight of evidence — not the existence of any single study — determines the current scientific understanding.
Professional Associations
The major professional associations in environmental research include the Ecological Society of America (ESA), which publishes Ecology and Ecological Applications; the American Geophysical Union (AGU), which publishes dozens of journals covering atmospheric science, hydrology, ocean science, and earth science; the Society of Environmental Toxicology and Chemistry (SETAC), which publishes Environmental Toxicology and Chemistry; and the Association of Environmental and Resource Economists (AERE), which publishes the Journal of the Association of Environmental and Resource Economists. Each of these organizations holds annual conferences whose programs and proceedings can help students identify current research trends and active scholars in their area of interest.
Frequently Asked Questions
What is the best database for environmental science research?
Environment Complete (EBSCO) provides the most extensive journal coverage for environmental research. For citation tracking and identifying high-impact studies, Web of Science is the standard tool. For environmental health topics, PubMed provides the deepest coverage. For data rather than articles, the EPA, NOAA, USGS, and NASA data portals described above are the primary sources.
Where do I find climate change data?
The primary sources are NOAA’s National Centers for Environmental Information for historical temperature and precipitation records, NASA’s Goddard Institute for Space Studies for global temperature datasets, NOAA’s Global Monitoring Laboratory for atmospheric CO2 data, and the EPA’s Greenhouse Gas Inventory for U.S. emissions data by sector. For policy context, the IPCC assessment reports provide the definitive synthesis of climate science.
How do I evaluate whether an environmental claim is supported by science?
The strength of environmental claims depends on the quality and consistency of the underlying evidence. Peer-reviewed research published in established scientific journals carries more weight than reports from advocacy organizations, news coverage, or social media. The IPCC’s assessments use a standardized confidence framework (from “very low” to “very high”) that rates the evidence and agreement behind each conclusion — this framework provides a model for how students should think about the strength of evidence in their own papers. When sources disagree, students should assess the methodology, sample size, and peer-review status of each source rather than simply counting the number of sources on each side.
Can I use data from environmental advocacy organizations?
Organizations such as the World Resources Institute, the Environmental Defense Fund, and the Natural Resources Defense Council publish research that is often methodologically sound and widely cited. However, because these organizations have explicit policy missions, their selection of research topics and framing of findings may reflect their advocacy priorities. Students should note the organization’s mission when citing its publications and should cross-check key claims against peer-reviewed science and government data. Data compilations from these organizations (such as WRI’s Climate Watch platform) are generally reliable because they draw from government and scientific sources.
Related Pages
- How to Do Research — Overview of research methods and discipline-specific guides
- How to Do Library Research — Using catalogs, databases, and librarian expertise
- How to Do Online Research — Evaluating and using internet sources
- Environmental Research Paper Topics — Topic ideas for environmental research papers
- How to Write a Research Paper — Complete step-by-step guide