noaa-recon-26710 Texas-Mexico 320 Year Multivariate ENSO Index Reconstruction Torbenson, M.A.C.; Stahle, D.W.; Howard, I.M.; Burnette, D.J.; Villanueva-Diaz, J.; Cook, E.R.; Griffin, D. Texas-Mexico 320 Year Multivariate ENSO Index Reconstruction 2019-06-02 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/26710 Investigator M.A.C. Torbenson Investigator D.W. Stahle Investigator I.M. Howard Investigator D.J. Burnette Investigator J. Villanueva-Diaz Investigator E.R. Cook Investigator D. Griffin earth science paleoclimate reconstructions atmospheric circulation geoscientificInformation ENSO 1675 AD 1991 AD 275 cal yr BP -41 cal yr BP Complete 23 28 -108 -99 Continent North America Texas-Northern Mexico>LATITUDE >LONGITUDE None 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. English DOC/NOAA/NESDIS/NCEI National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce https://www.ncdc.noaa.gov/data-access/paleoclimatology-data DATA Center Contact Bruce Bauer bruce.a.bauer@noaa.gov paleo@noaa.gov 303-497-6280 303-497-6513

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Boulder CO 80305-3328 USA online ASCII M.C.A. Torbenson, D.W. Stahle, I.M. Howard, D.J. Burnette, J. Villanueva-Diaz, E.R. Cook, D. Griffin 2019 Paleoceanography and Paleoclimatology 10.1029/2018PA003510 https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2018PA003510

The teleconnection of the El Nino/Southern Oscillation (ENSO) to instrumental precipitation and temperature during the cool season over North America is strongest and most temporally stable in the TexMex sector of northern Mexico and the borderlands of southwestern United States. The ENSO impact on North American hydroclimate expands and contracts out of this region on multidecadal timescales, possibly associated with the positive and negative phases of the Atlantic Multidecadal Oscillation. A subset of tree-ring chronologies from the TexMex sector also has the strongest and most stable ENSO signal detected in the North American network, similar to the strong ENSO signal measured in instrumental climate data from the same region. This subset of chronologies is used to reconstruct the multivariate ENSO index (MEI) as a measure of ENSO impact on North American hydroclimate during the instrumental and preinstrumental eras. The reconstruction exhibits improved fidelity in the frequency domain and better registration of spatial changes in ENSO signal over North America when compared to an MEI reconstruction based on all ENSO-correlated tree-ring chronologies irrespective of temporal stability of correlation. When correlated with gridded instrumental and tree-ring reconstructed Palmer drought indices across North America, the stable MEI estimate reproduces the changes in spatial impact of ENSO signal measured with instrumental data, and it reveals similar multidecadal changes in prehistory, potentially linked to the Atlantic Multidecadal Oscillation. The Great Plains drought of the 1850s and 1860s may have been an example of this Pacific-Atlantic configuration. STUDY NOTES: Tree ring based reconstructions of TexMex ENSO signal for 1675-1991 CE.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/treering/reconstructions/northamerica/texas-mexico2019mei.txt NOAA Template File; Texas-Northern Mexico Multivariate ENSO Index Reconstructions USA/NOAA DIF Version 9.8.4 2019-06-03 2019-06-03