2000 Year Tropical Rainfall Reconstructions Lechleitner, F.A.; Breitenbach, S.F.M.; Rehfeld, K.; Ridley, H.E.; Asmerom, Y.; Prufer, K.M.; Marwan, N.; Goswami, BH.; Kennett, D.J.; Aquino, V.V.; Polyak, V.J.; Haug, G.H.; Eglinton, T.I.; Baldini, J.U.L. Lechleitner, F.A. Breitenbach, S.F.M. Rehfeld, K. Ridley, H.E. Asmerom, Y. Prufer, K.M. Marwan, N. Goswami, BH. Kennett, D.J. Aquino, V.V. Polyak, V.J. Haug, G.H. Eglinton, T.I. Baldini, J.U.L. Precipitation Reconstruction earth science/paleoclimate/speleothems (delta 18O,calcium carbonate,null,per mil VPDB,null,speleothems,normalized,isotope ratio mass spectrometry,N,SH; Rec Chillagoe) earth science/paleoclimate/climate reconstructions (proxy composite,multiple proxies,null,standard deviation unit,null,climate reconstructions,composited|normalized,null,N,null) earth science/paleoclimate/speleothems (delta 18O,calcium carbonate,null,per mil VPDB,null,speleothems,normalized,isotope ratio mass spectrometry,N,SH; Rec Dante) earth science/paleoclimate/speleothems (delta 18O,calcium carbonate,null,per mil VPDB,null,speleothems,normalized,isotope ratio mass spectrometry,N,SH; Rec Denniston_O) earth science/paleoclimate/climate reconstructions (proxy composite,multiple proxies,95% confidence interval upper bound,standard deviation unit,null,climate reconstructions,composited|normalized,null,N,null) earth science/paleoclimate/speleothems (delta 18O,calcium carbonate,null,per mil VPDB,null,speleothems,normalized,isotope ratio mass spectrometry,N,NH; Rec Dayu) earth science/paleoclimate/speleothems (delta 18O,calcium carbonate,null,per mil VPDB,null,speleothems,normalized,isotope ratio mass spectrometry,N,NH; low resolution; Rec Defore) earth science/paleoclimate/speleothems (delta 18O,calcium carbonate,null,per mil VPDB,null,speleothems,normalized,isotope ratio mass spectrometry,N,NH; low resolution; Rec Dandak) earth science/paleoclimate/speleothems (delta 18O,calcium carbonate,null,per mil VPDB,null,speleothems,normalized,isotope ratio mass spectrometry,N,NH; Rec SAH) earth science/paleoclimate/climate reconstructions (proxy composite,multiple proxies,one standard error,standard deviation unit,null,climate reconstructions,composited|normalized,null,N,null) earth science/paleoclimate/speleothems (delta 13C,calcium carbonate,null,per mil VPDB,null,speleothems,normalized,isotope ratio mass spectrometry,N,NH; Rec Lianhua_short) earth science/paleoclimate/speleothems (delta 18O,calcium carbonate,null,per mil VPDB,null,speleothems,normalized,isotope ratio mass spectrometry,N,NH; low resolution; Rec Huangye3) earth science/paleoclimate/speleothems (delta 18O,calcium carbonate,null,per mil VPDB,null,speleothems,normalized,isotope ratio mass spectrometry,N,SH; Rec Huagapo1) earth science/paleoclimate/speleothems (delta 18O,calcium carbonate,null,per mil VPDB,null,speleothems,normalized,isotope ratio mass spectrometry,N,SH; Rec Guadalcanal_5FC) earth science/paleoclimate/speleothems (delta 18O,calcium carbonate,null,per mil VPDB,null,speleothems,normalized,isotope ratio mass spectrometry,N,SH; Rec Denniston_11) earth science/paleoclimate/ (age,null,null,calendar year before present,null,,null,null,N,null) earth science/paleoclimate/ice cores (delta 18O,bulk ice,null,per mil SMOW,null,ice cores,normalized,null,N,SH; Rec Quelccaya) earth science/paleoclimate/paleolimnology (delta 18O,null,null,standard deviation unit,null,paleolimnology,normalized,null,N,null) earth science/paleoclimate/speleothems (delta 18O,calcium carbonate,null,per mil VPDB,null,speleothems,normalized,isotope ratio mass spectrometry,N,SH; Rec Guadalcanal_10FC) earth science/paleoclimate/speleothems (delta 18O,calcium carbonate,null,per mil VPDB,null,speleothems,normalized,isotope ratio mass spectrometry,N,SH; Rec Curupira) earth science/paleoclimate/climate reconstructions (proxy composite,multiple proxies,95% confidence interval lower bound,standard deviation unit,null,climate reconstructions,composited|normalized,null,N,null) earth science/paleoclimate/speleothems (delta 18O,calcium carbonate,null,per mil VPDB,null,speleothems,normalized,isotope ratio mass spectrometry,N,NH; Rec Huangye1) earth science/paleoclimate/speleothems (delta 18O,calcium carbonate,null,per mil VPDB,null,speleothems,normalized,isotope ratio mass spectrometry,N,NH; Rec Huangye2) earth science/paleoclimate/speleothems (delta 18O,calcium carbonate,null,per mil VPDB,null,speleothems,normalized,isotope ratio mass spectrometry,N,SH; Rec Denniston_P) earth science/paleoclimate/speleothems (delta 18O,calcium carbonate,null,per mil VPDB,null,speleothems,normalized,isotope ratio mass spectrometry,N,SH; Rec Huagapo2) earth science/paleoclimate/speleothems (delta 18O,calcium carbonate,null,per mil VPDB,null,speleothems,normalized,isotope ratio mass spectrometry,N,SH; Rec Denniston_F) earth science/paleoclimate/speleothems (delta 18O,calcium carbonate,null,per mil VPDB,null,speleothems,normalized,isotope ratio mass spectrometry,N,SH; Rec Denniston_G) earth science/paleoclimate/ (notes,null,null,null,null,,null,null,N,number of records) earth science/paleoclimate/climate reconstructions|tree ring (Palmer Drought Severity Index,null,null,standard deviation unit,null,climate reconstructions|tree ring,normalized,null,N,null) earth science/paleoclimate/speleothems (delta 18O,calcium carbonate,null,per mil VPDB,null,speleothems,normalized,isotope ratio mass spectrometry,N,NH; low resolution) earth science/paleoclimate/speleothems (delta 18O,calcium carbonate,null,per mil VPDB,null,speleothems,normalized,isotope ratio mass spectrometry,N,NH; Rec Wanxiang) earth science/paleoclimate/speleothems (delta 13C,calcium carbonate,null,per mil VPDB,null,speleothems,normalized,isotope ratio mass spectrometry,N,NH; Rec YOK-I) earth science/paleoclimate/speleothems (delta 18O,calcium carbonate,null,per mil VPDB,null,speleothems,normalized,isotope ratio mass spectrometry,N,SH; Rec Cascayunga D) earth science/paleoclimate/speleothems (delta 18O,calcium carbonate,null,per mil VPDB,null,speleothems,normalized,isotope ratio mass spectrometry,N,SH; Rec Dante_new) earth science/paleoclimate/speleothems (delta 18O,calcium carbonate,null,per mil VPDB,null,speleothems,normalized,isotope ratio mass spectrometry,N,SH; Rec Paudalho) earth science/paleoclimate/speleothems (delta 18O,calcium carbonate,null,per mil VPDB,null,speleothems,normalized,isotope ratio mass spectrometry,N,SH; Rec Denniston_I) earth science/paleoclimate/paleoceanography (titanium,sediment,null,standard deviation unit,null,paleoceanography,normalized,null,N,null) earth science/paleoclimate/reconstructions (Tropics>LATITUDE >LONGITUDE ) The presence of a low- to mid-latitude interhemispheric hydrologic seesaw is apparent over orbital and glacial-interglacial timescales, but its existence over the most recent past remains unclear. Here we investigate, based on climate proxy reconstructions from both hemispheres, the inter-hemispherical phasing of the Intertropical Convergence Zone (ITCZ) and the low- to mid-latitude teleconnections in the Northern Hemisphere over the past 2000 years. A clear feature is a persistent southward shift of the ITCZ during the Little Ice Age until the beginning of the 19th Century. Strong covariation between our new composite ITCZ-stack and North Atlantic Oscillation (NAO) records reveals a tight coupling between these two synoptic weather and climate phenomena over decadal-to-centennial timescales. This relationship becomes most apparent when comparing two precisely dated, high-resolution paleorainfall records from Belize and Scotland, indicating that the low- to mid-latitude teleconnection was also active over annual-decadal timescales. It is likely a combination of external forcing, i.e., solar and volcanic, and internal feedbacks, that drives the synchronous ITCZ and NAO shifts via energy flux perturbations in the tropics. STUDY NOTES: Composite reconstruction of low latitude rainfall over the last 2000 years; divided by into NH and SH, as well as combined global reconstruction. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Lechleitner, F.A. Investigator : Breitenbach, S.F.M. Investigator : Rehfeld, K. Investigator : Ridley, H.E. Investigator : Asmerom, Y. Investigator : Prufer, K.M. Investigator : Marwan, N. Investigator : Goswami, BH. Investigator : Kennett, D.J. Investigator : Aquino, V.V. Investigator : Polyak, V.J. Investigator : Haug, G.H. Investigator : Eglinton, T.I. Investigator : Baldini, J.U.L. 2017-06-30 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/22315 https://www1.ncdc.noaa.gov/pub/data/paleo/reconstructions/lechleitner2017/lechleitner2017precip.txt https://www1.ncdc.noaa.gov/pub/data/paleo/reconstructions/lechleitner2017/lechleitner2017precip.txt English https://www.ncdc.noaa.gov/paleo/study/22315 https://www1.ncdc.noaa.gov/pub/data/paleo/reconstructions/lechleitner2017/lechleitner2017precip.txt Franziska A. Lechleitner, Sebastian F.M. Breitenbach, Kira Rehfeld, Harriet E. Ridley, Yemane Asmerom, Keith M. Prufer, Norbert Marwan, Bedartha Goswami, Douglas J. Kennett, Valorie V. Aquino, Victor Polyak, Gerald H. Haug, Timothy I. Eglinton, James U.L. Baldini2017Tropical rainfall over the last two millennia: evidence for a low-latitude hydrologic seesawScientific Reports45809710.1038/srep45809 START YEAR: 2000 cal yr BP * END YEAR: -50 cal yr BP -180 -30 180 30