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Bumblebee on Tithonia rotundiflora. Photo by Jerome Ward.   Pollen grains. Photo by Eric Grimm.   Coring frozen Echo Lake, Vermont. Photo by Paul Bierman.

Pollen grains that are washed or blown into lakes can accumulate in sediments and provide a record of past vegetation. Different types of pollen in lake sediments reflect the vegetation that was present around the lake and, therefore, the climate conditions favorable for that vegetation.

Obtaining Data at the World Data Center

Listings and search results from this page include data archived by the World Data Center for Paleoclimatology/NOAA Paleoclimatology Program and by the Neotoma Paleoecology Database.

Search Datasets

  • Interactive Map
    Select study locations by region, proximity to a point, or text-based attributes.
  • Google Earth Map
    Locate and download pollen studies using a Google Earth map interface. Google Earth must be installed to use this search tool.
  • Search All Paleoclimatology Data
    Access a free text search of our entire study archive.
  • NCEI Paleo Web Service
    ​Harvest paleoclimatology study metadata records using the NCEI Paleo Web Service.

Browse Datasets

Contributing Data

Investigators who wish to contribute their data to our pollen archive can find information on contributing below. Data and study description information can be contributed by emailing your data to

Other Data Archives

Additional sources of pollen data and information.