noaa-ocean-19602 Arctic Ocean Spectral Reflectance Data During the Quaternary Ortiz, J.D. ; Polyak, L.; Haley, B.A. Arctic Ocean Spectral Reflectance Data During the Quaternary 2016-01-04 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/19602 Investigator J.D. Ortiz Investigator L. Polyak Investigator B.A. Haley earth science paleoclimate paleoceanography reflectance,sediment,null,percent per nanometer,null,paleoceanography,averaged,null,N,Derivative of 520 nm reflectance measurement earth science paleoclimate paleoceanography reflectance,sediment,null,percent per nanometer,null,paleoceanography,averaged,null,N,Derivative of 530 nm reflectance measurement earth science paleoclimate paleoceanography reflectance,sediment,null,percent,null,paleoceanography,averaged,null,N,500 nm reflectance measurement earth science paleoclimate paleoceanography reflectance,sediment,null,percent,null,paleoceanography,averaged,null,N,570 nm reflectance measurement earth science paleoclimate paleoceanography blue-yellow contrast,sediment,null,dimensionless,null,paleoceanography,averaged,null,N,Minolta CM2600D with UV boost and specular component excluded earth science paleoclimate paleoceanography reflectance,sediment,null,percent,null,paleoceanography,averaged,null,N,420 nm reflectance measurement earth science paleoclimate paleoceanography reflectance,sediment,null,percent,null,paleoceanography,averaged,null,N,440 nm reflectance measurement earth science paleoclimate paleoceanography reflectance,sediment,null,percent per nanometer,null,paleoceanography,averaged,null,N,Derivative of 450 nm reflectance measurement earth science paleoclimate paleoceanography reflectance,sediment,null,percent per nanometer,null,paleoceanography,averaged,null,N,Derivative of 480 nm reflectance measurement earth science paleoclimate paleoceanography reflectance,sediment,null,percent per nanometer,null,paleoceanography,averaged,null,N,Derivative of 650 nm reflectance measurement earth science paleoclimate paleoceanography reflectance,sediment,null,percent,null,paleoceanography,averaged,null,N,700 nm reflectance measurement earth science paleoclimate paleoceanography reflectance,sediment,null,percent,null,paleoceanography,averaged,null,N,460 nm reflectance measurement earth science paleoclimate paleoceanography reflectance,sediment,null,percent,null,paleoceanography,averaged,null,N,470 nm reflectance measurement earth science paleoclimate paleoceanography reflectance,sediment,null,percent,null,paleoceanography,averaged,null,N,480 nm reflectance measurement earth science paleoclimate paleoceanography red-green contrast,sediment,null,degree,null,paleoceanography,averaged,null,N,Minolta CM2600D with UV boost and specular component excluded earth science paleoclimate paleoceanography notes,null,null,null,null,paleoceanography,null,null,C,Konica-Minolta text id earth science paleoclimate paleoceanography reflectance,sediment,null,percent per nanometer,null,paleoceanography,averaged,null,N,Derivative of 500 nm reflectance measurement earth science paleoclimate paleoceanography reflectance,sediment,null,percent per nanometer,null,paleoceanography,averaged,null,N,Derivative of 410 nm reflectance measurement earth science paleoclimate paleoceanography reflectance,sediment,null,percent per nanometer,null,paleoceanography,averaged,null,N,Derivative of 540 nm reflectance measurement earth science paleoclimate paleoceanography reflectance,sediment,null,percent per nanometer,null,paleoceanography,averaged,null,N,Derivative of 560 nm reflectance measurement earth science paleoclimate paleoceanography reflectance,sediment,null,percent per nanometer,null,paleoceanography,averaged,null,N,Derivative of 590 nm reflectance measurement earth science paleoclimate paleoceanography reflectance,sediment,null,percent,null,paleoceanography,averaged,null,N,610 nm reflectance measurement earth science paleoclimate paleoceanography reflectance,sediment,null,percent per nanometer,null,paleoceanography,averaged,null,N,Derivative of 700 nm reflectance measurement earth science paleoclimate paleoceanography reflectance,sediment,null,percent per nanometer,null,paleoceanography,averaged,null,N,Derivative of 610 nm reflectance measurement earth science paleoclimate paleoceanography reflectance,sediment,null,percent per nanometer,null,paleoceanography,averaged,null,N,Derivative of 460 nm reflectance measurement earth science paleoclimate paleoceanography reflectance,sediment,null,percent per nanometer,null,paleoceanography,averaged,null,N,Derivative of 470 nm reflectance measurement earth science paleoclimate paleoceanography reflectance,sediment,null,percent,null,paleoceanography,averaged,null,N,510 nm reflectance measurement earth science paleoclimate paleoceanography reflectance,sediment,null,percent per nanometer,null,paleoceanography,averaged,null,N,Derivative of 670 nm reflectance measurement earth science paleoclimate paleoceanography reflectance,sediment,null,percent,null,paleoceanography,averaged,null,N,680 nm reflectance measurement earth science paleoclimate paleoceanography red-green contrast,sediment,null,dimensionless,null,paleoceanography,averaged,null,N,Minolta CM2600D with UV boost and specular component excluded earth science paleoclimate paleoceanography reflectance,sediment,null,percent,null,paleoceanography,averaged,null,N,410 nm reflectance measurement earth science paleoclimate paleoceanography reflectance,sediment,null,percent,null,paleoceanography,averaged,null,N,550 nm reflectance measurement earth science paleoclimate paleoceanography reflectance,sediment,null,percent,null,paleoceanography,averaged,null,N,400 nm reflectance measurement earth science paleoclimate paleoceanography reflectance,sediment,null,percent per nanometer,null,paleoceanography,averaged,null,N,Derivative of 420 nm reflectance measurement earth science paleoclimate paleoceanography reflectance,sediment,null,percent per nanometer,null,paleoceanography,averaged,null,N,Derivative of 440 nm reflectance measurement earth science paleoclimate paleoceanography reflectance,sediment,null,percent per nanometer,null,paleoceanography,averaged,null,N,Derivative of 510 nm reflectance measurement earth science paleoclimate paleoceanography reflectance,sediment,null,percent per nanometer,null,paleoceanography,averaged,null,N,Derivative of 620 nm reflectance measurement earth science paleoclimate paleoceanography reflectance,sediment,null,percent per nanometer,null,paleoceanography,averaged,null,N,Derivative of 640 nm reflectance measurement earth science paleoclimate paleoceanography reflectance,sediment,null,percent per nanometer,null,paleoceanography,averaged,null,N,Derivative of 660 nm reflectance measurement earth science paleoclimate paleoceanography reflectance,sediment,null,percent,null,paleoceanography,averaged,null,N,450 nm reflectance measurement earth science paleoclimate paleoceanography reflectance,sediment,null,percent,null,paleoceanography,averaged,null,N,490 nm reflectance measurement earth science paleoclimate paleoceanography reflectance,sediment,null,percent,null,paleoceanography,averaged,null,N,560 nm reflectance measurement earth science paleoclimate paleoceanography reflectance,sediment,null,percent,null,paleoceanography,averaged,null,N,630 nm reflectance measurement earth science paleoclimate paleoceanography reflectance,sediment,null,percent,null,paleoceanography,averaged,null,N,640 nm reflectance measurement earth science paleoclimate paleoceanography reflectance,sediment,null,percent,null,paleoceanography,averaged,null,N,670 nm reflectance measurement earth science paleoclimate paleoceanography notes,null,null,null,null,paleoceanography,null,null,N,Sample number earth science paleoclimate paleoceanography reflectance,sediment,null,percent,null,paleoceanography,averaged,null,N,520 nm reflectance measurement earth science paleoclimate paleoceanography reflectance,sediment,null,percent per nanometer,null,paleoceanography,averaged,null,N,Derivative of 400 nm reflectance measurement earth science paleoclimate paleoceanography reflectance,sediment,null,percent per nanometer,null,paleoceanography,averaged,null,N,Derivative of 580 nm reflectance measurement earth science paleoclimate paleoceanography reflectance,sediment,null,percent per nanometer,null,paleoceanography,averaged,null,N,Derivative of 600 nm reflectance measurement earth science paleoclimate paleoceanography reflectance,sediment,null,percent,null,paleoceanography,averaged,null,N,690 nm reflectance measurement earth science paleoclimate paleoceanography reflectance,sediment,null,percent,null,paleoceanography,averaged,null,N,620 nm reflectance measurement earth science paleoclimate paleoceanography reflectance,sediment,null,percent per nanometer,null,paleoceanography,averaged,null,N,Derivative of 680 nm reflectance measurement earth science paleoclimate paleoceanography chroma,sediment,null,dimensionless,null,paleoceanography,averaged,null,N,Minolta CM2600D with UV boost and specular component excluded earth science paleoclimate paleoceanography hue,sediment,null,degree,null,paleoceanography,averaged,null,N,Minolta CM2600D with UV boost and specular component excluded earth science paleoclimate paleoceanography reflectance,sediment,null,percent,null,paleoceanography,averaged,null,N,430 nm reflectance measurement earth science paleoclimate paleoceanography lightness,sediment,null,dimensionless,null,paleoceanography,averaged,null,N,Minolta CM2600D with UV boost and specular component excluded earth science paleoclimate paleoceanography reflectance,sediment,null,percent per nanometer,null,paleoceanography,averaged,null,N,Derivative of 490 nm reflectance measurement earth science paleoclimate paleoceanography reflectance,sediment,null,percent per nanometer,null,paleoceanography,averaged,null,N,Derivative of 550 nm reflectance measurement earth science paleoclimate paleoceanography reflectance,sediment,null,percent per nanometer,null,paleoceanography,averaged,null,N,Derivative of 570 nm reflectance measurement earth science paleoclimate paleoceanography reflectance,sediment,null,percent per nanometer,null,paleoceanography,averaged,null,N,Derivative of 630 nm reflectance measurement earth science paleoclimate paleoceanography reflectance,sediment,null,percent,null,paleoceanography,averaged,null,N,530 nm reflectance measurement earth science paleoclimate paleoceanography reflectance,sediment,null,percent,null,paleoceanography,averaged,null,N,540 nm reflectance measurement earth science paleoclimate paleoceanography reflectance,sediment,null,percent,null,paleoceanography,averaged,null,N,600 nm reflectance measurement earth science paleoclimate paleoceanography reflectance,sediment,null,percent per nanometer,null,paleoceanography,averaged,null,N,Derivative of 430 nm reflectance measurement earth science paleoclimate paleoceanography reflectance,sediment,null,percent,null,paleoceanography,averaged,null,N,580 nm reflectance measurement earth science paleoclimate paleoceanography reflectance,sediment,null,percent,null,paleoceanography,averaged,null,N,590 nm reflectance measurement earth science paleoclimate paleoceanography reflectance,sediment,null,percent per nanometer,null,paleoceanography,averaged,null,N,Derivative of 690 nm reflectance measurement earth science paleoclimate paleoceanography reflectance,sediment,null,percent,null,paleoceanography,averaged,null,N,650 nm reflectance measurement earth science paleoclimate paleoceanography reflectance,sediment,null,percent,null,paleoceanography,averaged,null,N,660 nm reflectance measurement earth science paleoclimate paleoceanography reflectance,sediment,null,degree,null,paleoceanography,averaged,null,N,Minolta CM2600D with UV boost and specular component excluded earth science paleoclimate paleoceanography depth,null,null,centimeter,null,paleoceanography,null,null,N,null earth science paleoclimate paleocean lithology earth science paleoclimate paleocean physical properties geoscientificInformation Complete 74.818333 88.450483 -172.501583 -146.560417 -2792 -951 Ocean Arctic Ocean Mendeleev Ridge HLY0503-08JPC>LATITUDE 79.59275>LONGITUDE -172.501583 Ocean Arctic Ocean Northwind Ridge P1-92-AR-P39>LATITUDE 75.845>LONGITUDE -156.031667 Ocean Arctic Ocean Lomonosov Ridge HLY0503-18JPC>LATITUDE 88.450483>LONGITUDE -146.560417 Ocean Arctic Ocean Alpha Ridge HLY0503-14JPC>LATITUDE 84.303267>LONGITUDE -149.034 Ocean Arctic Ocean Northwind Ridge P1-92-AR-P25>LATITUDE 74.818333>LONGITUDE -157.365 Ocean Arctic Ocean Northwind Ridge P1-93-AR-P23>LATITUDE 76.955>LONGITUDE -155.065 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

325 Broadway, E/NE31

Boulder CO 80305-3328 USA online ASCII Ortiz, J.D., M. O'Regan, and M. Jakobsson 2014 International Arctic Workshop

One of the greatest challenges to progress in Arctic paleoclimate is the difficulty associated with developing reliable age constraints for Arctic marine sediment (Alexanderson et al., 2013; Jakobsson et al., 2013). Lack of carbonate material at many sites makes it difficult to employ nanofossil or foraminiferal taxonomies, and in many cases precludes the use of benthic δ18O as a target for orbital tuning (Ortiz, 2011). Likewise, the high inclination of the Arctic and redox changes across glacial-interglacial cycles can pose difficulties for paleomagnetic reconstruction (Darby et al., 2012). As an alternative approach to age model development, we propose cyclo-stratigraphic orbital tuning of a sedimentary paleoclimate proxy derived from geochemical and physical properties data. Our tuning target is sedimentary %Mn, which varies in response to surficial processes, riverine input and marine redox cycling across glacial-interglacial cycles (Jakobsson, et al. 2000; Löwemark, et al. 2008; Löwemark, et al. 2013). Visible derivative spectroscopy using diffuse spectral reflectance (DSR) data (400-700nm at 10nm resolution with a 3 mm spot-size) was measured at 1 cm resolution on the wet, split surface of the sediment cores using a CM2600d spectrophotometer (Ortiz, 2011). The cores were wrapped in Glad-wrap to protect the integration sphere of the CM-2600d spectrophotometer (Ortiz, 2011). The resulting data was derivative transformed to remove scattering, grain-size, and wetness effects, and then the resulting correlation matrix of the data was transformed using varimax-rotated, principal component analysis. Principle component regression of %Mn measured by XRF using an Innov-X Alpha-series analyzer against the difference between first and second of the DSR component scores was then used to generate a %Mn record at the full measurement resolution of the DSR data. The tuning target selected is the La2010 solution a eccentricity reconstruction (Laskar et al. 2011). We select eccentricity as a suitable initial tuning target because the eccentricity signal, should be enhanced at these high latitudes, the generally low sedimentation rates in the Arctic provide a suitably long record for comparison against the tuning target, and eccentricity has been linked to variations in ice volume (Lisiecki, 2010). The tuning process consists of calculating the wavelet spectrum for each record as a function of depth to yield lithofacies cycle lengths. The %Mn record for each core is then filtered using an infinite impulse response (IIR) band-pass filter centered on each downcore lithofacies cycle. The extracted filters are then mapped against the eccentricity template to generate a depth to age transfer function, assuming no phase lag between the eccentricity target and the sedimentary %Mn response. The quality of the tuning process is determined by evaluating the linearity of the depth-age transfer functions and by plotting the unfiltered %Mn curves on age to evaluate their fit. We have thus far applied this method to six cores raised from different ridges and basins of the Arctic. The resulting depth-age curves were remarkably linear (Figure 1), indicating little need to distort the sedimentary record to achieve a very strong fit between eccentricity and the filtered %Mn cycles. The stratigraphic cycle that best matched the eccentricity-tuning target varied in length from 40 cm to 274 cm due to variable sedimentation rates between sites (Figure 2a). The amplitude modulation of the filtered %Mn record matched that of the eccentricity template reasonably well, and the fit improved, when the next longer sedimentary cycle – presumably related to the 400 ka eccentricity cycle - was combined with the shorter, 100k-related %Mn component (Figure 2b). Plotting the %Mn records as a function of age resulted in a considerable improvement in the visual litho-stratigraphic correlations between records from different locations (Figure 3). These preliminary results demonstrate the great promise of the method as a potential stratigraphic tool for use with Arctic marine sediment. STUDY NOTES: These are diffuse spectral reflectance data from various cores measured as part of an NSF funded stratigraphic correlation project. Measurements in specular component excluded mode, with 100% UV burst (SCE/100). Values in the stds tables for each core are are replicate measurements of the white calibration standard time for the Konica Minolta CM-2600d. Each instrument was factor- calibrated against its white calibration tile. Standards were measured before collection of measurements on each core section, then between sections and after the completion the last core section.The standard deviation of the white standard measurements provides an estimate of the measurement error of the instrument as a function of wavelength. Provided Keywords: diffuse spectral reflectance

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/ortiz2014/HLY05-03-18JPCref.xls Originally Contributed Excel File; HLY05-03-18JPC Reflectance and Standards Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/ortiz2014/ortiz2014-ar-p39-stds.txt Formatted Text File; P1-93-AR-P39 Reflectance Standards GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/ortiz2014/ortiz2014-ar-p25-stds.txt Formatted Text File; P1-93-AR-P25 Reflectance Standards GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/ortiz2014/ortiz2014-18jpc.txt Formatted Text File; HLY0503-18JPC Reflectance GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/ortiz2014/ortiz2014-ar-p39.txt Formatted Text File; P1-93-AR-P39 Reflectance GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/ortiz2014/ortiz2014-ar-p23-stds.txt Formatted Text File; P1-93-AR-P23 Reflectance Standards GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/ortiz2014/USGS-P1-92-AR-P39-reflectance.xls Originally Contributed Excel File; P1-93-AR-P39 Reflectance and Standards Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/ortiz2014/HLY05-03-14JPCref.xls Originally Contributed Excel File; HLY05-03-14JPC Reflectance and Standards Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/ortiz2014/USGS-P1-93-AR-P23-reflectance.xls Originally Contributed Excel File; P1-92-AR-P23 Reflectance and Standards Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/ortiz2014/ortiz2014-ar-p25.txt Formatted Text File; P1-93-AR-P25 Reflectance GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/ortiz2014/USGS-P1-92-AR-P25-reflectance.xls Originally Contributed Excel File; P1-92-AR-P25 Reflectance and Standards Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/ortiz2014/ortiz2014-14jpc-stds.txt Formatted Text File; HLY0503-14JPC Reflectance Standards GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/ortiz2014/ortiz2014-14jpc.txt Formatted Text File; HLY0503-14JPC Reflectance GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/ortiz2014/ortiz2014-08jpc-stds.txt Formatted Text File; HLY0503-08JPC Reflectance Standards GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/ortiz2014/ortiz2014-18jpc-stds.txt Formatted Text File; HLY0503-18JPC Reflectance Standards GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/ortiz2014/ortiz2014-08jpc.txt Formatted Text File; HLY0503-08JPC Reflectance GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/ortiz2014/HLY05-03-08JPCref.xls Originally Contributed Excel File; HLY05-03-08JPC Reflectance and Standards Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/ortiz2014/ortiz2014-ar-p23.txt Formatted Text File; P1-93-AR-P23 Reflectance USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11