The Climate Connection

Tools for understanding climate change and how it impacts forest ecosystems in the Northeast.

Explore Climate Change

Get a quick handle on how climate change will affect temperature, precipitation, and other weather patterns in ways that are critical to forested ecosystems with this selection of online tools from trusted sources.

  • Web Map
  • Summary
  • Historical
  • Projected
  • Both
  • Temperature
  • Precipitation
  • Weather

Average Daily Maximum Summer Temperature

Average Daily Minimum Winter Temperature

Northeast Climate Assessment

Changes in Temperature and Precipitation

Change in Total Snowfall

Climate Wizard

Climate Data Primer

Source: NOAA
Explore Impacts of Climate Change

How will forested ecosystems respond to climate change? What impacts are we seeing already? We have assembled a range of tools you can use to explore the observed and predicted impacts of climate change on forests and the water, wildlife and people that depend on them.

  • Web Map
  • Summary
  • Historical
  • Projected
  • Both
  • Forests
  • Water
  • Wildlife
  • People

Click a topic to filter the list of tools

Emerald Ash Borer Tracking

Growing Degree Days - Gypsy Moth

Quarterly Climate Impacts and Outlook

Climate Signals

Change in Lake Ice Thaw Dates

Seven-day Low Streamflows

Drought Impacts Reporter

Vegetation Drought Response Index (VegDRI)

Change in First Leaf Date

Extreme Weather Map

i-Tree Landscape

Source: i-Tree

The Forest Ecosystem Monitoring Cooperative Climate Connection is a resource for policy makers, researchers, students and natural resource professionals to quickly find the tools they need to explore climate change and how it will impact forests in the Northeast.

Read our full report on the development of the Climate Connection

Why Develop the FEMC Climate Connection?

The FEMC Climate Connection is a simple portal to access key resources on climate change in our region and the impacts it will have on forested ecosystems. As we learn more about climate change and its impacts, a growing wealth of resources are at our fingertips, but finding the right tool for the right question can be a daunting task. Not only are there a variety of portals for exploring and accessing data on climate change itself, we are constantly learning more about how these changes impact northeastern forests. The FEMC Climate Connection makes it easier to quickly identify tools you can use to explore climate change and its specific impacts on forested ecosystem, curated by our staff and tailored to the Northeast. The FEMC Climate Connection is a point of access for three key resources:

  1. Tools for exploring how climate change will affect weather, temperature, and precipitation patterns in our region in ecologically meaningful ways;
  2. Tools for exploring or quantifying the impacts on forest resources that these changes will cause, from driving pest outbreaks to reducing streamflow to changing in the timing of key seasonal events;
  3. A collection of research on climate change in the Northeast available in the FEMC data archive.

With easier access to these resources, the FEMC Climate Connection gives Cooperators tools they need to understand the implications of climate change and incorporate them into the management of our forested ecosystems.


The Climate Connection was developed by the Forest Ecosystem Monitoring Cooperative with long-term funding from the U.S. Department of Agriculture, Forest Service, Northeastern Area - State & Private Forestry.

We are grateful for the contributions of Maria Janowiak and Danielle Shannon of the Northern Institute of Applied Climate Science for their guidance in developing this product. We would also like to acknowledge the dozens of researchers and professionals who have contributed data to the FEMC data archive that helps improve our collective understanding of climate change in the region.

Missing Something?

While we have done our best to identify key resources for exploring climate change and the impacts it will have, we may have missed your favorite tool or resource. Please let us know by sending us a link and why you love it to - we will follow up and get it added to the FEMC Climate Connection!

Other Resources

Regional Climate Change Research and Monitoring

FEMC Cooperators have collected an amazing amount of data and scholarly research on climate change in northeastern forests, and much of it is available on the FEMC Data Archive. Explore regional climate change-themed data in the FEMC archive.

Experimental Ice Glazing in a Northern Hardwood Forest to Understand Ecological Impacts of Ice Storms

Using methods like those used to make snow at ski areas, researchers successfully created ice glaze on tree branches (remarkably similar to conditions during the Northeast’s 1998 Ice Storm) over a large northern hardwood forest area. This novel experimental tool will allow scientists to study controlled icing events of different ...

Downloadable: 6 datasets

Winter Injury, Carbon Loss, but Surprising Growth Resurgence in Red Spruce

Red spruce winter injury, associated with red spruce decline in the Northern Forest, results from needle freezing that can lead to crown thinning and eventual tree mortality. We set out to measure impacts of this injury on long-term carbon storage in red spruce trees. We collected tree stem increment cores ...

Downloadable: 2 datasets

Tree species growing at their elevational limits: bioindicator of climate or atmospheric change

Tree cores were collected along with an inventory of regeneration for tree species at and near their elevational limits on five mountains in Vermont.

Downloadable: 3 datasets

And 166 more projects and datasets.

Climate Change Data

The FEMC Climate Connection focuses on tools that enable exploration and understanding. But if you are one of those people that wants to get straight to the data, here are a couple of links that might help you out.

PRISM Climate Data
The PRISM (Parameter-elevation Regressions on Independent Slopes Model) Climate Group uses a range of climate observations to develop spatial climate datasets (precipitation, temperature, vapor pressure deficit). The resulting datasets incorporate a variety of modeling techniques and are available at multiple spatial/temporal resolutions, covering the period from 1895 to the present.
The Data Distribution Centre of the Intergovernmental Panel on Climate Change (IPCC) allows users to browse and access climate, socio-economic, and environmental data, both from the past and future projections. The site also provides technical guidelines on the selection and use of different types of data and scenarios.
NCEI Climate Data Online
The National Centers for Environmental Information (NCEI) provide daily climate summaries, marine data, along with global climatic summaries and local data. Data can be explored with a web map or search tool.
Climate - Data Catalog
A clearinghouse of publicly available data, with a focus on climate, that is hosted by U.S. General Services Administration, Technology Transformation Service. Other criteria can be designated to refine the search.
NCAR Climate Data Guide
National Center for Atmospheric Research (NCAR) provides a comprehensive list of climate maps and datasets, mostly spatial. Products can be searched by location, time frame, and keyword.
Climatic Research Unit - High-resolution Gridded Datasets
The Climatic Research Unit (CRU) provides spatial models of historical climate, including cloud cover, sunshine duration, and wind speed, to name a few.
National Forest Climate Change Maps
The National Forest Climate Change Maps project was developed to meet the need of National Forest managers and are available for every National Forest in the contiguous United States with relevant data coverage, and include variables related to precipitation, air temperature, snow, and stream flow.
Climate Change Atlas
The Climate Change Atlas, produced by the USDA Forest Service, documents the current and possible future distribution of 134 tree species and 147 bird species in the Eastern US and gives detailed information on environmental characteristics defining these distributions.
NCEI Quick Links
Follow links to gain quick access to many climate and weather datasets, products, and various web pages and resources provided by NCEI (National Centers for Environmental Information).

Portals and Clearinghouses

There are many other portals and clearinghouses of climate information and regional and national scales, such as the USDA Forest Service’s Climate Change Resource Center, the New York Climate Change Science Clearinghouse, Climate Change in Vermont, Resilient MA and many others. While not exhaustive, the list below represents other places to find and access information.

New York Climate Change Science Clearinghouse
The New York Climate Change Science Clearinghouse (NYCCSC) is a gateway for policymakers, local planners, and the public to identify and access documents, data, websites, tools, and maps relevant to climate change adaptation and mitigation across New York State.
State of Vermont: Climate Change in Vermont
Vermont's Climate Dashboard provides information about specific changes in Vermont's climate during the last fifty years. The Dashboard also presents information about how these changes in temperature, precipitation, and the timing of seasons may effect Vermont's quality of life and economy.
Resilient MA
The Massachusetts Climate Change Clearinghouse (Resilient MA) is a gateway to data and information relevant to climate change adaptation and mitigation across the state.
Northeast Climate Adaptation Science Center
The Department of Interior's Northeast Climate Adaptation Science Center (NE CASC) is part of a federal network of eight Climate Adaptation Science Centers created to work with natural and cultural resource managers to gather the scientific information and build the tools needed to help fish, wildlife, and ecosystems adapt to the impacts of climate change.
NASA: Climate Change and Global Warming
NASA's (National Aeronautics and Space Administration) climate site provides resources collected by NASA related to climate change.
Climate Change Knowledge Portal
The Climate Change Knowledge Portal (CCKP) is a central hub of information, data and reports about climate change around the world. Query, map, compare, chart and summarize key climate and climate-related information.
Adaptation Clearinghouse
The Adaptation Clearinghouse, powered by Georgetown Climate Center, is an online database and networking site that serves policymakers and others who are working to help communities adapt to climate change.
The Climate Explorer
Explore graphs and maps of historical and projected climate variables for any county in the contiguous US using this NOAA (National Oceanic and Atmospheric Administration) site.
Climate Change Resource Center
The Climate Change Resource Center (CCRC) provides access to information and tools concerning ecosystem management and climate change.
Climate Data and Tools
A gallery of climate maps, tools, and resources pertaining to the climate, with an emphasis on forests ecosystems, provided by the USDA Forest Service.
Real-Time Data
A gallery of real-time climate maps, tools, and resources, with a focus on climate-related events hosted by Climate Nexus.
Massachusetts Climate Action Tool
Use this tool to explore climate change impacts, learn about vulnerabilities and plan adaptation actions.