Articles | Volume 11, issue 8
https://doi.org/10.5194/amt-11-4725-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/amt-11-4725-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Calculating uncertainty for the RICE ice core continuous flow analysis water isotope record
National Isotope Centre, GNS Science, Lower Hutt, New Zealand
W. Troy Baisden
National Isotope Centre, GNS Science, Lower Hutt, New Zealand
now at: Environmental Research Institute, University of Waikato, Hamilton, New Zealand
Nancy A. N. Bertler
National Isotope Centre, GNS Science, Lower Hutt, New Zealand
Antarctic Research Centre, Victoria University of Wellington, Wellington, New Zealand
B. Daniel Emanuelsson
National Isotope Centre, GNS Science, Lower Hutt, New Zealand
Antarctic Research Centre, Victoria University of Wellington, Wellington, New Zealand
Silvia Canessa
National Isotope Centre, GNS Science, Lower Hutt, New Zealand
Andy Phillips
National Isotope Centre, GNS Science, Lower Hutt, New Zealand
Related authors
Vincent Charnay, Daniel P. Lowry, Elizabeth D. Keller, and Abha Sood
EGUsphere, https://doi.org/10.5194/egusphere-2024-3638, https://doi.org/10.5194/egusphere-2024-3638, 2024
This preprint is open for discussion and under review for Climate of the Past (CP).
Short summary
Short summary
Our study evaluates models' ability to simulate Antarctic regional climate features by comparing available PMIP past1000 and the CESM-LME models to sets of Last Millennium Antarctic proxy-based reconstructions most relevant to the surface mass balance. We later look at their implications for 21st-century sea level rise. We show that no model performs equally well for all sets of variables, and the best-scoring model predicts a higher surface mass balance by 2100.
James E. Lee, Edward J. Brook, Nancy A. N. Bertler, Christo Buizert, Troy Baisden, Thomas Blunier, V. Gabriela Ciobanu, Howard Conway, Dorthe Dahl-Jensen, Tyler J. Fudge, Richard Hindmarsh, Elizabeth D. Keller, Frédéric Parrenin, Jeffrey P. Severinghaus, Paul Vallelonga, Edwin D. Waddington, and Mai Winstrup
Clim. Past, 16, 1691–1713, https://doi.org/10.5194/cp-16-1691-2020, https://doi.org/10.5194/cp-16-1691-2020, 2020
Short summary
Short summary
The Roosevelt Island ice core was drilled to investigate climate from the eastern Ross Sea, West Antarctica. We describe the ice age-scale and gas age-scale of the ice core for 0–763 m (83 000 years BP). Old ice near the bottom of the core implies the ice dome existed throughout the last glacial period and that ice streaming was active in the region. Variations in methane, similar to those used as evidence of early human influence on climate, were observed prior to significant human populations.
Mai Winstrup, Paul Vallelonga, Helle A. Kjær, Tyler J. Fudge, James E. Lee, Marie H. Riis, Ross Edwards, Nancy A. N. Bertler, Thomas Blunier, Ed J. Brook, Christo Buizert, Gabriela Ciobanu, Howard Conway, Dorthe Dahl-Jensen, Aja Ellis, B. Daniel Emanuelsson, Richard C. A. Hindmarsh, Elizabeth D. Keller, Andrei V. Kurbatov, Paul A. Mayewski, Peter D. Neff, Rebecca L. Pyne, Marius F. Simonsen, Anders Svensson, Andrea Tuohy, Edwin D. Waddington, and Sarah Wheatley
Clim. Past, 15, 751–779, https://doi.org/10.5194/cp-15-751-2019, https://doi.org/10.5194/cp-15-751-2019, 2019
Short summary
Short summary
We present a 2700-year timescale and snow accumulation history for an ice core from Roosevelt Island, Ross Ice Shelf, Antarctica. We observe a long-term slightly decreasing trend in accumulation during most of the period but a rapid decline since the mid-1960s. The latter is linked to a recent strengthening of the Amundsen Sea Low and the expansion of regional sea ice. The year 1965 CE may thus mark the onset of significant increases in sea-ice extent in the eastern Ross Sea.
Nancy A. N. Bertler, Howard Conway, Dorthe Dahl-Jensen, Daniel B. Emanuelsson, Mai Winstrup, Paul T. Vallelonga, James E. Lee, Ed J. Brook, Jeffrey P. Severinghaus, Taylor J. Fudge, Elizabeth D. Keller, W. Troy Baisden, Richard C. A. Hindmarsh, Peter D. Neff, Thomas Blunier, Ross Edwards, Paul A. Mayewski, Sepp Kipfstuhl, Christo Buizert, Silvia Canessa, Ruzica Dadic, Helle A. Kjær, Andrei Kurbatov, Dongqi Zhang, Edwin D. Waddington, Giovanni Baccolo, Thomas Beers, Hannah J. Brightley, Lionel Carter, David Clemens-Sewall, Viorela G. Ciobanu, Barbara Delmonte, Lukas Eling, Aja Ellis, Shruthi Ganesh, Nicholas R. Golledge, Skylar Haines, Michael Handley, Robert L. Hawley, Chad M. Hogan, Katelyn M. Johnson, Elena Korotkikh, Daniel P. Lowry, Darcy Mandeno, Robert M. McKay, James A. Menking, Timothy R. Naish, Caroline Noerling, Agathe Ollive, Anaïs Orsi, Bernadette C. Proemse, Alexander R. Pyne, Rebecca L. Pyne, James Renwick, Reed P. Scherer, Stefanie Semper, Marius Simonsen, Sharon B. Sneed, Eric J. Steig, Andrea Tuohy, Abhijith Ulayottil Venugopal, Fernando Valero-Delgado, Janani Venkatesh, Feitang Wang, Shimeng Wang, Dominic A. Winski, V. Holly L. Winton, Arran Whiteford, Cunde Xiao, Jiao Yang, and Xin Zhang
Clim. Past, 14, 193–214, https://doi.org/10.5194/cp-14-193-2018, https://doi.org/10.5194/cp-14-193-2018, 2018
Short summary
Short summary
Temperature and snow accumulation records from the annually dated Roosevelt Island Climate Evolution (RICE) ice core show that for the past 2 700 years, the eastern Ross Sea warmed, while the western Ross Sea showed no trend and West Antarctica cooled. From the 17th century onwards, this dipole relationship changed. Now all three regions show concurrent warming, with snow accumulation declining in West Antarctica and the eastern Ross Sea.
Kay Steinkamp, Sara E. Mikaloff Fletcher, Gordon Brailsford, Dan Smale, Stuart Moore, Elizabeth D. Keller, W. Troy Baisden, Hitoshi Mukai, and Britton B. Stephens
Atmos. Chem. Phys., 17, 47–76, https://doi.org/10.5194/acp-17-47-2017, https://doi.org/10.5194/acp-17-47-2017, 2017
Short summary
Short summary
The exchange of carbon dioxide between the land biosphere in New Zealand and the atmosphere is estimated by combining measurements of the concentration of the gas in the air with model simulations of atmospheric circulation. The results indicate that over the study period of 2011–2013, New Zealand is a larger net sink for CO2 than estimated in the National Inventory Report. Regions in the western South Island, especially those covered predominantly by forests, contribute the most to this signal.
Elizabeth D. Keller, Jocelyn C. Turnbull, and Margaret W. Norris
Atmos. Chem. Phys., 16, 5481–5495, https://doi.org/10.5194/acp-16-5481-2016, https://doi.org/10.5194/acp-16-5481-2016, 2016
Short summary
Short summary
We examine the utility of tree ring 14C archives for detecting long-term changes in fossil CO2 emissions from a point source using six years of observations from two trees near the Kapuni Gas Treatment Plant in New Zealand. Pairing these observations with an atmospheric transport model, we quantify the minimum amount of change in annual emissions that it would be possible to detect in new samples representing averages over one, two, and four years.
B. D. Emanuelsson, W. T. Baisden, N. A. N. Bertler, E. D. Keller, and V. Gkinis
Atmos. Meas. Tech., 8, 2869–2883, https://doi.org/10.5194/amt-8-2869-2015, https://doi.org/10.5194/amt-8-2869-2015, 2015
Short summary
Short summary
Here we present an experimental setup for water stable isotopes continuous flow measurements. It is the first continuous flow laser spectroscopy system that is using off-axis integrated cavity output spectroscopy (analyzer manufactured by LGR) in combination with an evaporation unit to continuously analyze sample from an ice core. The isotopic water analyzer setup used during the 2013 RICE ice core processing campaign achieved measurements with high precision and high temporal resolution.
E. D. Keller, W. T. Baisden, L. Timar, B. Mullan, and A. Clark
Geosci. Model Dev., 7, 2359–2391, https://doi.org/10.5194/gmd-7-2359-2014, https://doi.org/10.5194/gmd-7-2359-2014, 2014
J. C. Turnbull, E. D. Keller, T. Baisden, G. Brailsford, T. Bromley, M. Norris, and A. Zondervan
Atmos. Chem. Phys., 14, 5001–5014, https://doi.org/10.5194/acp-14-5001-2014, https://doi.org/10.5194/acp-14-5001-2014, 2014
Vincent Charnay, Daniel P. Lowry, Elizabeth D. Keller, and Abha Sood
EGUsphere, https://doi.org/10.5194/egusphere-2024-3638, https://doi.org/10.5194/egusphere-2024-3638, 2024
This preprint is open for discussion and under review for Climate of the Past (CP).
Short summary
Short summary
Our study evaluates models' ability to simulate Antarctic regional climate features by comparing available PMIP past1000 and the CESM-LME models to sets of Last Millennium Antarctic proxy-based reconstructions most relevant to the surface mass balance. We later look at their implications for 21st-century sea level rise. We show that no model performs equally well for all sets of variables, and the best-scoring model predicts a higher surface mass balance by 2100.
James E. Lee, Edward J. Brook, Nancy A. N. Bertler, Christo Buizert, Troy Baisden, Thomas Blunier, V. Gabriela Ciobanu, Howard Conway, Dorthe Dahl-Jensen, Tyler J. Fudge, Richard Hindmarsh, Elizabeth D. Keller, Frédéric Parrenin, Jeffrey P. Severinghaus, Paul Vallelonga, Edwin D. Waddington, and Mai Winstrup
Clim. Past, 16, 1691–1713, https://doi.org/10.5194/cp-16-1691-2020, https://doi.org/10.5194/cp-16-1691-2020, 2020
Short summary
Short summary
The Roosevelt Island ice core was drilled to investigate climate from the eastern Ross Sea, West Antarctica. We describe the ice age-scale and gas age-scale of the ice core for 0–763 m (83 000 years BP). Old ice near the bottom of the core implies the ice dome existed throughout the last glacial period and that ice streaming was active in the region. Variations in methane, similar to those used as evidence of early human influence on climate, were observed prior to significant human populations.
Mai Winstrup, Paul Vallelonga, Helle A. Kjær, Tyler J. Fudge, James E. Lee, Marie H. Riis, Ross Edwards, Nancy A. N. Bertler, Thomas Blunier, Ed J. Brook, Christo Buizert, Gabriela Ciobanu, Howard Conway, Dorthe Dahl-Jensen, Aja Ellis, B. Daniel Emanuelsson, Richard C. A. Hindmarsh, Elizabeth D. Keller, Andrei V. Kurbatov, Paul A. Mayewski, Peter D. Neff, Rebecca L. Pyne, Marius F. Simonsen, Anders Svensson, Andrea Tuohy, Edwin D. Waddington, and Sarah Wheatley
Clim. Past, 15, 751–779, https://doi.org/10.5194/cp-15-751-2019, https://doi.org/10.5194/cp-15-751-2019, 2019
Short summary
Short summary
We present a 2700-year timescale and snow accumulation history for an ice core from Roosevelt Island, Ross Ice Shelf, Antarctica. We observe a long-term slightly decreasing trend in accumulation during most of the period but a rapid decline since the mid-1960s. The latter is linked to a recent strengthening of the Amundsen Sea Low and the expansion of regional sea ice. The year 1965 CE may thus mark the onset of significant increases in sea-ice extent in the eastern Ross Sea.
Nancy A. N. Bertler, Howard Conway, Dorthe Dahl-Jensen, Daniel B. Emanuelsson, Mai Winstrup, Paul T. Vallelonga, James E. Lee, Ed J. Brook, Jeffrey P. Severinghaus, Taylor J. Fudge, Elizabeth D. Keller, W. Troy Baisden, Richard C. A. Hindmarsh, Peter D. Neff, Thomas Blunier, Ross Edwards, Paul A. Mayewski, Sepp Kipfstuhl, Christo Buizert, Silvia Canessa, Ruzica Dadic, Helle A. Kjær, Andrei Kurbatov, Dongqi Zhang, Edwin D. Waddington, Giovanni Baccolo, Thomas Beers, Hannah J. Brightley, Lionel Carter, David Clemens-Sewall, Viorela G. Ciobanu, Barbara Delmonte, Lukas Eling, Aja Ellis, Shruthi Ganesh, Nicholas R. Golledge, Skylar Haines, Michael Handley, Robert L. Hawley, Chad M. Hogan, Katelyn M. Johnson, Elena Korotkikh, Daniel P. Lowry, Darcy Mandeno, Robert M. McKay, James A. Menking, Timothy R. Naish, Caroline Noerling, Agathe Ollive, Anaïs Orsi, Bernadette C. Proemse, Alexander R. Pyne, Rebecca L. Pyne, James Renwick, Reed P. Scherer, Stefanie Semper, Marius Simonsen, Sharon B. Sneed, Eric J. Steig, Andrea Tuohy, Abhijith Ulayottil Venugopal, Fernando Valero-Delgado, Janani Venkatesh, Feitang Wang, Shimeng Wang, Dominic A. Winski, V. Holly L. Winton, Arran Whiteford, Cunde Xiao, Jiao Yang, and Xin Zhang
Clim. Past, 14, 193–214, https://doi.org/10.5194/cp-14-193-2018, https://doi.org/10.5194/cp-14-193-2018, 2018
Short summary
Short summary
Temperature and snow accumulation records from the annually dated Roosevelt Island Climate Evolution (RICE) ice core show that for the past 2 700 years, the eastern Ross Sea warmed, while the western Ross Sea showed no trend and West Antarctica cooled. From the 17th century onwards, this dipole relationship changed. Now all three regions show concurrent warming, with snow accumulation declining in West Antarctica and the eastern Ross Sea.
Jonathan Sanderman, Courtney Creamer, W. Troy Baisden, Mark Farrell, and Stewart Fallon
SOIL, 3, 1–16, https://doi.org/10.5194/soil-3-1-2017, https://doi.org/10.5194/soil-3-1-2017, 2017
Short summary
Short summary
Knowledge of how soil carbon stocks and flows change in response to agronomic management decisions is a critical step in devising management strategies that best promote food security while mitigating greenhouse gas emissions. Here, we present 40 years of data demonstrating that increasing productivity both leads to greater carbon stocks and accelerates the decomposition of soil organic matter, thus providing more nutrients back to the crop.
Kay Steinkamp, Sara E. Mikaloff Fletcher, Gordon Brailsford, Dan Smale, Stuart Moore, Elizabeth D. Keller, W. Troy Baisden, Hitoshi Mukai, and Britton B. Stephens
Atmos. Chem. Phys., 17, 47–76, https://doi.org/10.5194/acp-17-47-2017, https://doi.org/10.5194/acp-17-47-2017, 2017
Short summary
Short summary
The exchange of carbon dioxide between the land biosphere in New Zealand and the atmosphere is estimated by combining measurements of the concentration of the gas in the air with model simulations of atmospheric circulation. The results indicate that over the study period of 2011–2013, New Zealand is a larger net sink for CO2 than estimated in the National Inventory Report. Regions in the western South Island, especially those covered predominantly by forests, contribute the most to this signal.
Elizabeth D. Keller, Jocelyn C. Turnbull, and Margaret W. Norris
Atmos. Chem. Phys., 16, 5481–5495, https://doi.org/10.5194/acp-16-5481-2016, https://doi.org/10.5194/acp-16-5481-2016, 2016
Short summary
Short summary
We examine the utility of tree ring 14C archives for detecting long-term changes in fossil CO2 emissions from a point source using six years of observations from two trees near the Kapuni Gas Treatment Plant in New Zealand. Pairing these observations with an atmospheric transport model, we quantify the minimum amount of change in annual emissions that it would be possible to detect in new samples representing averages over one, two, and four years.
B. D. Emanuelsson, W. T. Baisden, N. A. N. Bertler, E. D. Keller, and V. Gkinis
Atmos. Meas. Tech., 8, 2869–2883, https://doi.org/10.5194/amt-8-2869-2015, https://doi.org/10.5194/amt-8-2869-2015, 2015
Short summary
Short summary
Here we present an experimental setup for water stable isotopes continuous flow measurements. It is the first continuous flow laser spectroscopy system that is using off-axis integrated cavity output spectroscopy (analyzer manufactured by LGR) in combination with an evaporation unit to continuously analyze sample from an ice core. The isotopic water analyzer setup used during the 2013 RICE ice core processing campaign achieved measurements with high precision and high temporal resolution.
E. D. Keller, W. T. Baisden, L. Timar, B. Mullan, and A. Clark
Geosci. Model Dev., 7, 2359–2391, https://doi.org/10.5194/gmd-7-2359-2014, https://doi.org/10.5194/gmd-7-2359-2014, 2014
J. C. Turnbull, E. D. Keller, T. Baisden, G. Brailsford, T. Bromley, M. Norris, and A. Zondervan
Atmos. Chem. Phys., 14, 5001–5014, https://doi.org/10.5194/acp-14-5001-2014, https://doi.org/10.5194/acp-14-5001-2014, 2014
Related subject area
Subject: Others (Wind, Precipitation, Temperature, etc.) | Technique: Laboratory Measurement | Topic: Data Processing and Information Retrieval
Automating the analysis of hailstone layers
Water vapor estimation based on 1-year data of E-band millimeter wave link in North China
Joshua S. Soderholm and Matthew R. Kumjian
Atmos. Meas. Tech., 16, 695–706, https://doi.org/10.5194/amt-16-695-2023, https://doi.org/10.5194/amt-16-695-2023, 2023
Short summary
Short summary
Hailstones often exhibit opaque and clear ice layers that have an onion-like appearance. These layers are record of the conditions during growth and can be simulated by hail growth models. A new technique for automating the measurement of these layers from hail cross sections is demonstrated. This technique is applied to a collection of hailstones from Melbourne, Australia, to understand their growth evolution, and a first look at evaluating a hail growth model is demonstrated.
Siming Zheng, Juan Huo, Wenbing Cai, Yinhui Zhang, Peng Li, Gaoyuan Zhang, Baofeng Ji, Jiafeng Zhou, and Congzheng Han
Atmos. Meas. Tech., 15, 1675–1687, https://doi.org/10.5194/amt-15-1675-2022, https://doi.org/10.5194/amt-15-1675-2022, 2022
Short summary
Short summary
We demonstrated the processing of millimeter wave link data with a time resolution of 1 min for 60 dry periods from August 2020 to July 2021. We have proposed a new method for extracting water vapor attenuation values and applied this method to data processing within this year. We found that the water vapor density value obtained from the millimeter wave link is highly correlated with the actual measurement value of the weather station.
Cited articles
Aemisegger, F., Sturm, P., Graf, P., Sodemann, H., Pfahl, S., Knohl, A., and
Wernli, H.: Measuring variations of δ18O and
δ2H in atmospheric water vapour using two commercial
laser-based spectrometers: an instrument characterisation study, Atmos. Meas.
Tech., 5, 1491–1511, https://doi.org/10.5194/amt-5-1491-2012, 2012.
Allan, D. W.: Statistics of atomic frequency standards in the near-infrared,
Proc. IEEE, 54, 221–231, 1966.
Analytical Methods Committee: Technical Brief, No. 13, Terminology – the key
to understanding analytical science, Part 1: Accuracy, precision and
uncertainty, Roy. Soc. Ch., September 2003.
Baer, D. S., Paul, J. B., Gupta, M., and O'Keefe, A.: Sensitive absorption
measurements in the near-infrared region using off-axis
integrated-cavity-output spectroscopy, Appl. Phys. B-Lasers O, 75, 261–265,
2002.
Bertler, N. A. N., Conway, H., Dahl-Jensen, D., Emanuelsson, D. B., Winstrup,
M., Vallelonga, P. T., Lee, J. E., Brook, E. J., Severinghaus, J. P., Fudge,
T. J., Keller, E. D., Baisden, W. T., Hindmarsh, R. C. A., Neff, P. D.,
Blunier, T., Edwards, R., Mayewski, P. A., Kipfstuhl, S., Buizert, C.,
Canessa, S., Dadic, R., Kjær, H. A., Kurbatov, A., Zhang, D., Waddington,
E. D., Baccolo, G., Beers, T., Brightley, H. J., Carter, L., Clemens-Sewall,
D., Ciobanu, V. G., Delmonte, B., Eling, L., Ellis, A., Ganesh, S., Golledge,
N. R., Haines, S., Handley, M., Hawley, R. L., Hogan, C. M., Johnson, K. M.,
Korotkikh, E., Lowry, D. P., Mandeno, D., McKay, R. M., Menking, J. A.,
Naish, T. R., Noerling, C., Ollive, A., Orsi, A., Proemse, B. C., Pyne, A.
R., Pyne, R. L., Renwick, J., Scherer, R. P., Semper, S., Simonsen, M.,
Sneed, S. B., Steig, E. J., Tuohy, A., Venugopal, A. U., Valero-Delgado, F.,
Venkatesh, J., Wang, F., Wang, S., Winski, D. A., Winton, V. H. L.,
Whiteford, A., Xiao, C., Yang, J., and Zhang, X.: Roosevelt Island Climate
Evolution (RICE) ice core isotope record data set, available at:
https://doi.org/10.1594/PANGAEA.880396 (last access: 4 August 2018), 2017.
Bertler, N. A. N., Conway, H., Dahl-Jensen, D., Emanuelsson, D. B., Winstrup,
M., Vallelonga, P. T., Lee, J. E., Brook, E. J., Severinghaus, J. P., Fudge,
T. J., Keller, E. D., Baisden, W. T., Hindmarsh, R. C. A., Neff, P. D.,
Blunier, T., Edwards, R., Mayewski, P. A., Kipfstuhl, S., Buizert, C.,
Canessa, S., Dadic, R., Kjær, H. A., Kurbatov, A., Zhang, D., Waddington,
E. D., Baccolo, G., Beers, T., Brightley, H. J., Carter, L., Clemens-Sewall,
D., Ciobanu, V. G., Delmonte, B., Eling, L., Ellis, A., Ganesh, S., Golledge,
N. R., Haines, S., Handley, M., Hawley, R. L., Hogan, C. M., Johnson, K. M.,
Korotkikh, E., Lowry, D. P., Mandeno, D., McKay, R. M., Menking, J. A.,
Naish, T. R., Noerling, C., Ollive, A., Orsi, A., Proemse, B. C., Pyne, A.
R., Pyne, R. L., Renwick, J., Scherer, R. P., Semper, S., Simonsen, M.,
Sneed, S. B., Steig, E. J., Tuohy, A., Venugopal, A. U., Valero-Delgado, F.,
Venkatesh, J., Wang, F., Wang, S., Winski, D. A., Winton, V. H. L.,
Whiteford, A., Xiao, C., Yang, J., and Zhang, X.: The Ross Sea Dipole –
temperature, snow accumulation and sea ice variability in the Ross Sea
region, Antarctica, over the past 2700 years, Clim. Past, 14, 193–214,
https://doi.org/10.5194/cp-14-193-2018, 2018.
Bigler, M., Svensson, A., Kettner, E., Vallelonga, P., Nielsen, M. E., and
Steffensen, J. P.: Optimization of high-resolution continuous flow analysis
for transient climate signals in ice cores, Environ. Sci. Technol., 45,
4483–4489, 2011.
Carter, J. F. and Fry, B.: Ensuring the reliability of stable isotope ratio
data – beyond the principle of identical treatment, Anal. Bioanal. Chem.,
405, 2799–2814, 2013.
Coplen, T. B.: Guidelines and Recommended Terms for Expression of Stable-
Isotope-Ratio and Gas-Ratio Measurement Results, Rapid Commun. Mass
Spectrom., 25, 2538–2560, 2011.
Dansgaard, W.: Stable isotopes in precipitation, Tellus, 16, 436–468,
https://doi.org/10.1111/j.2153-3490.1964.tb00181.x, 1964.
Emanuelsson, B. D., Baisden, W. T., Bertler, N. A. N., Keller, E. D., and
Gkinis, V.: High-resolution continuous-flow analysis setup for water isotopic
measurement from ice cores using laser spectroscopy, Atmos. Meas. Tech., 8,
2869–2883, https://doi.org/10.5194/amt-8-2869-2015, 2015.
Emanuelsson, B. D., Bertler, N. A. N., Neff, P. D., Renwick, J. A., Markle,
B. R., Baisden, W. T., and Keller, E. D.: The role of
Amundsen–Bellingshausen Sea anticyclonic circulation in forcing marine air
intrusions into West Antarctica, Clim. Dyn., 1–18, 2018.
Epstein, S., Sharp, R. P., and Goddard, I.: Oxygen-isotope ratios in
Antarctic snow, firn, and ice, J. Geol., 71, 698–720, 1963.
Gkinis, V., Popp, T. J., Blunier, T., Bigler, M., Schüpbach, S., Kettner,
E., and Johnsen, S. J.: Water isotopic ratios from a continuously melted ice
core sample, Atmos. Meas. Tech., 4, 2531–2542,
https://doi.org/10.5194/amt-4-2531-2011, 2011.
Gonfiantini, R.: Standards for stable isotope measurements in natural
compounds, Nature, 271, 534–536, 1978.
Jones, T. R., White, J. W. C., Steig, E. J., Vaughn, B. H., Morris, V.,
Gkinis, V., Markle, B. R., and Schoenemann, S. W.: Improved methodologies for
continuous-flow analysis of stable water isotopes in ice cores, Atmos. Meas.
Tech., 10, 617–632, https://doi.org/10.5194/amt-10-617-2017, 2017.
Kaufmann, P. R., Federer, U., Hutterli, M. A., Bigler, M., Schüpbach, S.,
Ruth, U., Schmitt, J., and Stocker, T. F.: An Improved Continuous Flow
Analysis System for High-Resolution Field Measurements on Ice Cores, Environ.
Sci. Technol., 42, 8044–8050, https://doi.org/10.1021/es8007722, 2008.
Kirchner, J.: Data Analysis Toolkits: available at:
http://seismo.berkeley.edu/~kirchner/eps_120/Toolkits/Toolkit_05.pdf
(last access: 31 May 2018), 2001.
Kurita, N., Newman, B. D., Araguas-Araguas, L. J., and Aggarwal, P.:
Evaluation of continuous water vapor δD and δ18O
measurements by off-axis integrated cavity output spectroscopy, Atmos. Meas.
Tech., 5, 2069–2080, https://doi.org/10.5194/amt-5-2069-2012, 2012.
Küttel, M., Steig, E. J., Ding, Q., Monaghan, A. J., and Battisti, D. S.:
Seasonal climate information preserved in West Antarctic ice core water
isotopes: relationships to temperature, large-scale circulation, and sea ice,
Clim. Dyn., 39, 1841–1857, 2012.
Lee, J. E., Brook, E. J., Bertler, N. A. N., Buizert, C., Baisden, T.,
Blunier, T., Ciobanu, V. G., Conway, H., Dahl-Jensen, D., Fudge, T. J.,
Hindmarsh, R., Keller, E. D., Parrenin, F., Severinghaus, J. P., Vallelonga,
P., Waddington, E. D., and Winstrup, M.: An 83 000 year old ice core from
Roosevelt Island, Ross Sea, Antarctica, Clim. Past Discuss.,
https://doi.org/10.5194/cp-2018-68, in review, 2018.
Meier-Augenstein, W.: Stable isotope forensics: an introduction to the
forensic application of stable isotope analysis, Vol. 3, John Wiley &
Sons, Dundee, UK, 2017.
NGRIP Members: High-resolution record of Northern Hemisphere climate
extending into the last interglacial period, Nature, 431, 147–151, 2004.
Paul, D., Skrzypek, G., and Fórizs, I.: Normalization of measured stable
isotopic compositions to isotope reference scales – a review, Rapid Commun.
Mass Spectrom., 21, 3006–3014, https://doi.org/10.1002/rcm.3185, 2007.
Pyne, R. L., Keller, E. D., Canessa, S., Bertler, N. A. N., Pyne, A. R.,
Mandeno, D., Vallelonga, P., Semper, S., Kjær, H. A., Hutchinson, E., and
Baisden, W. T.: A Novel Approach to Process Brittle Ice for Water Isotope
Continuous Flow Analysis, J. Glaciol., 64, 289–299, https://doi.org/10.1017/jog.2018.19,
2018.
Sinclair, K. E., Bertler, N. A. N., Trompetter, W. J., and Baisden, W. T.:
Seasonality of airmass pathways to coastal Antarctica: ramifications for
interpreting high-resolution ice core records, J. Climate, 26, 2065–2076,
2013.
Steig, E. J., Ding, Q., White, J. W. C., Kuttel, M., Rupper, S. B., Neumann,
T. A., Neff, P. D., Gallant, A. J., Mayewski, P. A., Taylor, K. C., and
Hoffmann, G.: Recent climate and ice-sheet changes in West Antarctica
compared with the past 2000 years, Nat. Geosci., 6, 372–375,
https://doi.org/10.1038/ngeo1778, 2013.
Sturm, P. and Knohl, A.: Water vapor δ2H and
δ18O measurements using off-axis integrated cavity output
spectroscopy, Atmos. Meas. Tech., 3, 67–77,
https://doi.org/10.5194/amt-3-67-2010, 2010.
Vinther, B. M., Clausen, H. B., Johnsen, S. J., Rasmussen, S. O., Andersen,
K. K., Buchardt, S. L., Dahl-Jensen, D., Seierstad, I. K., Siggaard-Andersen,
M. L., Steffensen, J. P., and Svensson, A.: A synchronized dating of three
Greenland ice cores throughout the Holocene, J. Geophys. Res., 111, D13102,
https://doi.org/10.1029/2005JD006921, 2006.
Werle, P.: Accuracy and precision of laser spectrometers for trace gas
sensing in the presence of optical fringes and atmospheric turbulence, Appl.
Phys. B-Lasers O., 102, 313–329, 2011.
Werner, R. A. and Brand, W. A.: Referencing strategies and techniques in
stable isotope ratio analysis, Rapid Commun. Mass Spectrom., 15, 501–519,
2001.
Winstrup, M., Vallelonga, P., Kjær, H. A., Fudge, T. J., Lee, J. E.,
Riis, M. H., Edwards, R., Bertler, N. A. N., Blunier, T., Brook, E. J.,
Buizert, C., Ciobanu, G., Conway, H., Dahl-Jensen, D., Ellis, A.,
Emanuelsson, B. D., Keller, E. D., Kurbatov, A., Mayewski, P., Neff, P. D.,
Pyne, R., Simonsen, M. F., Svensson, A., Tuohy, A., Waddington, E., and
Wheatley, S.: A 2700-year annual timescale and accumulation history for an
ice core from Roosevelt Island, West Antarctica, Clim. Past Discuss.,
https://doi.org/10.5194/cp-2017-101, in review, 2017.
Short summary
We describe a systematic approach to the calibration and uncertainty estimation of a high-resolution continuous flow analysis (CFA) water isotope (δ2H, δ18O) record from the Roosevelt Island Climate Evolution (RICE) Antarctic ice core. Our method establishes robust uncertainty estimates for CFA δ2H and δ18O measurements, comparable to those reported for discrete sample δ2H and δ18O analysis. The resulting mean total errors for the record are 0.74 ‰ and 0.21 ‰ for δ2H and δ18O, respectively.
We describe a systematic approach to the calibration and uncertainty estimation of a...