{"NOAAStudyId":"6221","contactInfo":{"address":"325 Broadway, E/NE31","city":"Boulder","constraints":"Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site.","country":"USA","dataCenterUrl":"https://www.ncdc.noaa.gov/data-access/paleoclimatology-data","email":"paleo@noaa.gov","fax":"303-497-6513","longName":"National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce ","phone":"303-497-6280","postalCode":"80305-3328","shortName":"DOC/NOAA/NESDIS/NCEI","state":"CO","type":"CONTACT INFORMATION"},"contributionDate":"1993-01-01","dataPublisher":"NOAA","dataType":"CLIMATE RECONSTRUCTIONS","dataTypeInformation":"https://www.ncdc.noaa.gov/data-access/paleoclimatology-data/datasets/climate-reconstruction","difMetadataLink":"http://www1.ncdc.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-recon-6221.xml","doi":null,"earliestYearBP":2040,"earliestYearCE":-90,"entryId":"noaa-recon-6221","funding":[],"investigators":"Gajewski, K.J.","mostRecentYearBP":7,"mostRecentYearCE":1943,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/6221","originalSource":null,"publication":[{"abstract":"Well-dated pollen profiles from six sites from Maine to Minnesota record vegetation changes indicative of summer temperature and annual precipitation variations over the past 2000 yr. Laminations in the sediment provide accurate time control. Multiple regression techniques were used to calculate calibration functions from a spatial network of modern pollen and climate data. When applied to the six pollen diagrams, these calibration functions yielded estimates that show a long-term trend toward lower summer temperature. Superimposed on this long-term trend are short-term fluctuations that are frequently in phase at the sites. Departures from the long-term cooling trend are positive around 1500 yr ago (indicating relative warmth) and negative between 200 and 500 yr ago (indicating relative cold). Annual precipitation showed a slight increase at several sites during the past 1000 yr relative to the previous 1000 yr.","author":{"name":"K. Gajewski"},"citation":"K. Gajewski. 1988. Late holocene climate changes in eastern North America estimated from pollen data. Quaternary Research, 29(3), 255-262. doi: 10.1016/0033-5894(88)90034-8","edition":null,"identifier":{"id":"10.1016/0033-5894(88)90034-8","type":"doi","url":"http://dx.doi.org/10.1016/0033-5894(88)90034-8"},"issue":"3","journal":"Quaternary Research","pages":"255-262","pubRank":"1","pubYear":1988,"reportNumber":null,"title":"Late holocene climate changes in eastern North America estimated from pollen data","type":"publication","volume":"29"},{"abstract":null,"author":{"name":"K. Gajewski"},"citation":"K. Gajewski. 1987. Climatic impacts on the vegetation of eastern North America during the past 2000 years. Plant Ecology (formerly Vegetatio), 68(3), 179-190. doi: 10.1007/BF00114719","edition":null,"identifier":{"id":"10.1007/BF00114719","type":"doi","url":"http://dx.doi.org/10.1007/BF00114719"},"issue":"3","journal":"Plant Ecology (formerly Vegetatio)","pages":"179-190","pubRank":"2","pubYear":1987,"reportNumber":null,"title":"Climatic impacts on the vegetation of eastern North America during the past 2000 years","type":"publication","volume":"68"}],"reconstruction":"Y","scienceKeywords":["Precipitation Reconstruction","Air Temperature Reconstruction","Little Ice Age (LIA)"],"site":[{"NOAASiteId":"20816","geo":{"geoType":"Feature","geometry":{"coordinates":["44.47","-70.05"],"type":"POINT"},"properties":{"easternmostLongitude":"-70.05","maxElevationMeters":"124","minElevationMeters":"124","northernmostLatitude":"44.47","southernmostLatitude":"44.47","westernmostLongitude":"-70.05"}},"locationName":"Continent>North America>United States Of America>Maine","mappable":"Y","paleoData":[{"NOAADataTableId":"31430","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>reconstructions>air temperature","earth science>paleoclimate>reconstructions>precipitation"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/pollen/recons/liadata.txt","linkText":"Northeastern USA Temperature and Precipitation Reconstuctions, 8 sites","urlDescription":"Original Data Text File","variables":[{"cvAdditionalInfo":"present defined as 1975 A.D.","cvDataType":"CLIMATE RECONSTRUCTIONS|POLLEN","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"calendar year before present","cvWhat":"age variable>age"},{"cvAdditionalInfo":"calibration data set: local instrumental data; 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