{"NOAAStudyId":"22891","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":"2017-10-13","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-22891.xml","doi":null,"earliestYearBP":179,"earliestYearCE":1771,"entryId":"noaa-recon-22891","funding":[{"fundingAgency":"Academy of Finland","fundingGrant":"288267"}],"investigators":"Helama, S.; Sohar, K.; Läänelaid, A.; Bijak, S.; Jaagus, J.","mostRecentYearBP":-58,"mostRecentYearCE":2008,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/22891","originalSource":null,"publication":[{"abstract":"There is plenty of evidence for intensification of the global hydrological cycle. In Europe, the northern areas are predicted to receive more precipitation in the future and observational evidence suggests a parallel trend over the past decades. As a consequence, it would be essential to place the recent trend in precipitation in the context of proxy-based estimates of reconstructed precipitation variability over the past centuries. Tree rings are frequently used as proxy data for palaeoclimate reconstructions. Here we use deciduous (Quercus robur) and coniferous (Picea abies) tree-ring width chronologies from western Estonia to deduce past early-summer (June) precipitation variability since 1771. Statistical model transforming our tree-ring data into estimates of precipitation sums explains 42% of the variance in instrumental variability. Comparisons with products of gridded reconstructions of soil moisture and summer precipitation illustrate robust correlations with soil moisture (Palmer Drought Severity Index), but lowered correlation with summer precipitation estimates prior to mid-nineteenth century, these instabilities possibly reflecting the general uncertainties inherent to early meteorological and proxy data. Reconstructed precipitation variability was negatively correlated to the teleconnection indices of the North Atlantic Oscillation and the Scandinavia pattern, on annual to decadal and longer scales. These relationships demonstrate the positive precipitation anomalies to result from increase in zonal inflow and cyclonic activity, the negative anomalies being linked with the high pressure conditions enhanced during the atmospheric blocking episodes. Recently, the instrumental data have demonstrated a remarkable increase in summer (June) precipitation in the study region. Our tree-ring based reconstruction reproduces this trend in the context of precipitation history since eighteenth century and quantifies the unprecedented abundance of June precipitation over the recent years.","author":{"name":"Samuli Helama, Kristina Sohar, Alar Läänelaid, Szymon Bijak, and Jaak Jaagus"},"citation":"Samuli Helama, Kristina Sohar, Alar Läänelaid, Szymon Bijak, and Jaak Jaagus. 2017. Reconstruction of precipitation variability in Estonia since the 18th century, inferred from oak and spruce tree rings. Climate Dynamics. . doi: 10.1007/s00382-017-3862-z","edition":null,"identifier":{"id":"10.1007/s00382-017-3862-z","type":"doi","url":"http://dx.doi.org/10.1007/s00382-017-3862-z"},"issue":null,"journal":"Climate Dynamics","pages":null,"pubRank":"1","pubYear":2017,"reportNumber":null,"title":"Reconstruction of precipitation variability in Estonia since the 18th century, inferred from oak and spruce tree rings","type":"publication","volume":null}],"reconstruction":"Y","scienceKeywords":["Precipitation Reconstruction"],"site":[{"NOAASiteId":"57503","geo":{"geoType":"Feature","geometry":{"coordinates":["58","59.5","22","25"],"type":"POLYGON"},"properties":{"easternmostLongitude":"25","maxElevationMeters":null,"minElevationMeters":null,"northernmostLatitude":"59.5","southernmostLatitude":"58","westernmostLongitude":"22"}},"locationName":"Continent>Europe>Northern Europe>Estonia","mappable":"N","paleoData":[{"NOAADataTableId":"34053","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>reconstructions>precipitation"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/treering/reconstructions/europe/estonia/estonia2017precip.txt","linkText":"Western Estonia June Precipitation Reconstruction","urlDescription":"Formatted Text Data File","variables":[{"cvAdditionalInfo":null,"cvDataType":"CLIMATE RECONSTRUCTIONS|TREE RING","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"reconstruction material>physical measurement>ring width","cvMethod":null,"cvSeasonality":"1-month period>Jun","cvShortName":null,"cvUnit":"millimeter","cvWhat":"earth system variable>hydroclimatic variable>hydroclimate rate>precipitation"},{"cvAdditionalInfo":null,"cvDataType":"CLIMATE RECONSTRUCTIONS|TREE RING","cvDetail":null,"cvError":"95% confidence interval lower bound","cvFormat":"Numeric","cvMaterial":"reconstruction material>physical measurement>ring width","cvMethod":null,"cvSeasonality":"1-month period>Jun","cvShortName":null,"cvUnit":"millimeter","cvWhat":"earth system variable>hydroclimatic variable>hydroclimate rate>precipitation"},{"cvAdditionalInfo":null,"cvDataType":"CLIMATE RECONSTRUCTIONS|TREE RING","cvDetail":null,"cvError":"95% confidence interval upper bound","cvFormat":"Numeric","cvMaterial":"reconstruction material>physical measurement>ring width","cvMethod":null,"cvSeasonality":"1-month period>Jun","cvShortName":null,"cvUnit":"millimeter","cvWhat":"earth system variable>hydroclimatic variable>hydroclimate rate>precipitation"},{"cvAdditionalInfo":null,"cvDataType":"CLIMATE RECONSTRUCTIONS|TREE RING","cvDetail":null,"cvError":"99% confidence interval upper bound","cvFormat":"Numeric","cvMaterial":"reconstruction material>physical measurement>ring width","cvMethod":null,"cvSeasonality":"1-month period>Jun","cvShortName":null,"cvUnit":"millimeter","cvWhat":"earth system variable>hydroclimatic variable>hydroclimate rate>precipitation"},{"cvAdditionalInfo":null,"cvDataType":"CLIMATE RECONSTRUCTIONS|TREE RING","cvDetail":null,"cvError":"99% confidence interval lower bound","cvFormat":"Numeric","cvMaterial":"reconstruction material>physical measurement>ring width","cvMethod":null,"cvSeasonality":"1-month period>Jun","cvShortName":null,"cvUnit":"millimeter","cvWhat":"earth system variable>hydroclimatic variable>hydroclimate rate>precipitation"},{"cvAdditionalInfo":null,"cvDataType":"CLIMATE RECONSTRUCTIONS|TREE RING","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"year Common Era","cvWhat":"age variable>age"}]}],"dataTableName":"Estonia2017precip","dataTableNotes":null,"earliestYear":1771,"earliestYearBP":179,"earliestYearCE":1771,"mostRecentYear":2008,"mostRecentYearBP":-58,"mostRecentYearCE":2008,"species":[],"timeUnit":"AD"}],"siteName":"Western Estonia"}],"studyCode":null,"studyName":"Western Estonia 238 Year June Precipitation Reconstruction","studyNotes":"A continuous 238-year long June precipitation reconstruction has been developed from oak (QURO) and spruce (PCAB) ring-width chronologies comprising living and historical tree-ring samples for western Estonia (59.5-58.0N, 22.0-25.0E).","version":"1.0","xmlId":"21034"}