{"NOAAStudyId":"26470","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":"2019-03-25","dataPublisher":"NOAA","dataType":"SPELEOTHEMS","dataTypeInformation":"https://www.ncdc.noaa.gov/data-access/paleoclimatology-data/datasets/speleothem","difMetadataLink":"http://www1.ncdc.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-cave-26470.xml","doi":null,"earliestYearBP":-14,"earliestYearCE":1964,"entryId":"noaa-cave-26470","funding":[{"fundingAgency":"US National Science Foundation","fundingGrant":"DGE-1445197"},{"fundingAgency":"Geological Society of America","fundingGrant":null}],"investigators":"Ronay, E.R.; Breitenbach, S.F.M.; Oster, J.L.; Myers, C.G.; Kelley, N.P.; Covey, A.K.; Bennartz, R.","mostRecentYearBP":-63,"mostRecentYearCE":2013,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/26470","originalSource":null,"publication":[{"abstract":"In climates with strongly seasonal rainfall, speleothem-based paleoclimate reconstructions are often thought to reflect wet season conditions, assuming a bias toward the season with greater water supply. This is particularly true in monsoon regions, where speleothem records are interpreted to document monsoon strength changes on multiple timescales. Dry season infiltration variability and rainfall seasonality are not typically considered in these reconstructions, even though cave ventilation could bias speleothem growth toward the cooler season. To investigate the influence of dry season infiltration on speleothem geochemistry, we combine a modern, sub-seasonally resolved trace element record from Mawmluh Cave in Northeast India with forward modeling experiments. We find that variations in the amplitude of seasonal signals in speleothem Mg/Ca, which reflects prior carbonate precipitation, are more sensitive to dry season rather than monsoon season infiltration. This sensitivity may be enhanced by dry season cave ventilation. The Mawmluh speleothem Mg/Ca record is consistent with increased dry season rainfall during the 1976-1998 warm phase of the Pacific Decadal Oscillation relative to 1964-2013. Our work demonstrates the importance of considering non-monsoon season rainfall when interpreting speleothem paleoclimate records and suggests that trace elements could provide insight into periods of enhanced dry season infiltration in monsoonal climates.","author":{"name":"Elli R. Ronay, Sebastian F.M. Breitenbach, Jessica L. Oster"},"citation":"Elli R. Ronay, Sebastian F.M. Breitenbach, Jessica L. Oster. 2019. Sensitivity of speleothem records in the Indian Summer Monsoon region to dry season infiltration. Scientific Reports, 9(1), 5091. doi: 10.1038/s41598-019-41630-2","edition":null,"identifier":{"id":"10.1038/s41598-019-41630-2","type":"doi","url":"http://dx.doi.org/10.1038/s41598-019-41630-2"},"issue":"1","journal":"Scientific Reports","pages":null,"pubRank":"1","pubYear":2019,"reportNumber":"5091","title":"Sensitivity of speleothem records in the Indian Summer Monsoon region to dry season infiltration","type":"publication","volume":"9"},{"abstract":null,"author":{"name":"Christopher G. Myers, Jessica L. Oster, Warren D. Sharp, Ralf Bennartz, Neil P. Kelley, Aaron K. Covey, Sebastian F.M. Breitenbach"},"citation":"Christopher G. Myers, Jessica L. Oster, Warren D. Sharp, Ralf Bennartz, Neil P. Kelley, Aaron K. Covey, Sebastian F.M. Breitenbach. 2015. Northeast Indian stalagmite records Pacific decadal climate change: Implications for moisture transport and drought in India. Geophysical Research Letters, 42(10), 4124-4132. doi: 10.1002/2015GL063826","edition":null,"identifier":{"id":"10.1002/2015GL063826","type":"doi","url":"http://dx.doi.org/10.1002/2015GL063826"},"issue":"10","journal":"Geophysical Research Letters","pages":"4124-4132","pubRank":"2","pubYear":2015,"reportNumber":null,"title":"Northeast Indian stalagmite records Pacific decadal climate change: Implications for moisture transport and drought in India","type":"publication","volume":"42"}],"reconstruction":"N","scienceKeywords":["Monsoon"],"site":[{"NOAASiteId":"53045","geo":{"geoType":"Feature","geometry":{"coordinates":["25.2622","91.8167"],"type":"POINT"},"properties":{"easternmostLongitude":"91.8167","maxElevationMeters":"1290","minElevationMeters":"1290","northernmostLatitude":"25.2622","southernmostLatitude":"25.2622","westernmostLongitude":"91.8167"}},"locationName":"Continent>Asia>Southcentral Asia>India","mappable":"Y","paleoData":[{"NOAADataTableId":"38853","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>speleothems>oxygen isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/india/mawmluh2019d18o.txt","linkText":"Mawmluh Cave d18O Data","urlDescription":"NOAA Template File","variables":[]},{"NOAAKeywords":["earth science>paleoclimate>speleothems>trace metals"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/india/mawmluh2019elem.txt","linkText":"Mawmluh Cave Trace Element Data","urlDescription":"NOAA Template File","variables":[]}],"dataTableName":"MAW-0201","dataTableNotes":null,"earliestYear":1964,"earliestYearBP":-14,"earliestYearCE":1964,"mostRecentYear":2013,"mostRecentYearBP":-63,"mostRecentYearCE":2013,"species":[],"timeUnit":"AD"}],"siteName":"Mawmluh Cave"}],"studyCode":null,"studyName":"Mawmluh Cave, India 50 Year Speleothem d18O and Trace Element Data","studyNotes":"Trace element ratios (Mg/Ca, Sr/Ca, Ba/Ca, U/Ca) and oxygen isotope (d18O) data at sub-seasonal resolution from stalagmite MAW-0201 collected in Mawmluh Cave, India, for the past 50 years","version":"1.0","xmlId":"65534"}