Physics of Ice, Climate and Earth

  1. Published

    Rapid global ocean-atmosphere response to Southern Ocean freshening during the last glacial

    Turney, C. S. M., Jones, R., Phipps, S. J., Thomas, Z., Hogg, A., Kershaw, P., Fogwill, C., Palmer, J., Ramsey, C. B., Adolphi, F., Muscheler, R., Hughen, K., Staff, R. A., Grosvenor, M., Golledge, N. R., Rasmussen, S. O., Hutchinson, D. K., Haberle, S., Lorrey, A., Boswijk, G. & 1 others, Cooper, A., 12 Sep 2017, In: Nature Communications. 8, 520.

    Research output: Contribution to journalJournal articleResearchpeer-review

  2. Published

    Discovery of argon in air-hydrate crystals in a deep ice core using scanning electron microscopy and energy-dispersive X-ray spectroscopy

    Uchida, T., Shigeyama, W., Oyabu, I., Goto-Azuma, K., Nakazawa, F., Homma, T., Kawamura, K. & Dahl-Jensen, Dorthe, 2022, In: Journal of Glaciology. 68, 269, p. 547-556 10 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  3. Published

    Widespread pollution of the South American atmosphere predates the industrial revolution by 240 y

    Uglietti, C., Gabrielli, P., Cooke, C. A., Vallelonga, P. & Thompson, L. G., 24 Feb 2015, In: Proceedings of the National Academy of the United States of America. 112, 8, p. 2349-2354

    Research output: Contribution to journalJournal articleResearchpeer-review

  4. Published

    Greenland Ice Core Record of Last Glacial Dust Sources and Atmospheric Circulation

    Ujvari, G., Klotzli, U., Stevens, T., Svensson, Anders, Ludwig, P., Vennemann, T., Gier, S., Horschinegg, M., Palcsu, L., Hippler, D., Kovacs, J., Di Biagio, C. & Formenti, P., 16 Aug 2022, In: Journal of Geophysical Research: Atmospheres. 127, 15, 23 p., e2022JD036597.

    Research output: Contribution to journalJournal articleResearchpeer-review

  5. Published

    Two possible source regions for central Greenland last glacial dust

    Ujvari, G., Stevens, T., Svensson, Anders, Kloetzli, U. S., Manning, C., Nemeth, T., Kovacs, J., Sweeney, M. R., Gocke, M., Wiesenberg, G. L. B., Markovic, S. B. & Zech, M., 16 Dec 2015, In: Geophysical Research Letters. 42, 23, p. 399-408

    Research output: Contribution to journalJournal articleResearchpeer-review

  6. Published

    Exploring Pathways to More Accurate Machine Learning Emulation of Atmospheric Radiative Transfer

    Ukkonen, P., Apr 2022, In: Journal of Advances in Modeling Earth Systems. 14, 4, 19 p., ARTN e2021MS002875.

    Research output: Contribution to journalJournal articleResearchpeer-review

  7. Published

    Accelerating Radiation Computations for Dynamical Models With Targeted Machine Learning and Code Optimization

    Ukkonen, P., Pincus, R., Hogan, R. J., Pagh Nielsen, K. & Kaas, Eigil, 15 Nov 2020, In: Journal of Advances in Modeling Earth Systems. 12, 12, 16 p., e2020MS002226.

    Research output: Contribution to journalJournal articleResearchpeer-review

  8. Published

    Improving the trade-off between accuracy and efficiency of atmospheric radiative transfer computations by using machine learning and code optimization

    Ukkonen, P. V., 2022, Niels Bohr Institute, Faculty of Science, University of Copenhagen. 117 p.

    Research output: Book/ReportPh.D. thesis

  9. Published

    Interlaboratory comparison of delta C-13 and delta D measurements of atmospheric CH4 for combined use of data sets from different laboratories

    Umezawa, T., Brenninkmeijer, C. A. M., Rockmann, T., van der Veen, C., Tyler, S. C., Fujita, R., Morimoto, S., Aoki, S., Sowers, T., Schmitt, J., Bock, M., Beck, J., Fischer, H., Michel, S. E., Vaughn, B. H., Miller, J. B., White, J. C., Brailsford, G., Schaefer, H., Sperlich, P. & 10 others, Brand, W. A., Rothe, M., Blunier, Thomas, Lowry, D., Fisher, R. E., Nisbet, E. G., Rice, A. L., Bergamaschi, P., Veidt, C. & Levin, I., 2 Mar 2018, In: Atmospheric Measurement Techniques. 11, 2, p. 1207-1231

    Research output: Contribution to journalJournal articleResearchpeer-review

  10. Published

    Intercomparisons of δ<sup>13</sup>C and δD measurements of atmospheric CH<sub>4</sub> for combined use of datasets from different laboratories

    Umezawa, T., Brenninkmeijer, C. A. M., Röckmann, T., Veen, C. V. D., Tyler, S. C., Fujita, R., Morimoto, S., Aoki, S., Sowers, T., Schmitt, J., Bock, M., Beck, J., Fischer, H., Michel, S. E., Vaughn, B. H., Miller, J. B., White, J. W. C., Brailsford, G., Schaefer, H., Sperlich, P. & 10 others, Brand, W. A., Rothe, M., Blunier, Thomas, Lowry, D., Fisher, R. E., Nisbet, E. G., Rice, A. L., Bergamaschi, P., Veidt, C. & Levin, I., 9 Aug 2017, In: Atmospheric Measurement Techniques. 281, 44 p.

    Research output: Contribution to journalJournal articleResearchpeer-review