/* DATA DESCRIPTION: Citation: Blunier, Thomas (1999): GRIP Methane Data (Bern). PANGAEA, https://doi.org/10.1594/PANGAEA.55087 Related to: Blunier, Thomas; Chappellaz, Jérôme A; Schwander, Jakob; Barnola, Jean-Marc; Desperts, T; Stauffer, Bernhard; Raynaud, Dominique (1993): Atmospheric methane record from a Greenland ice core over the last 1000 years. Geophysical Research Letters, 20(20), 2219-2222, https://doi.org/10.1029/93GL02414 Blunier, Thomas; Chappellaz, Jérôme A; Schwander, Jakob; Stauffer, Bernhard; Raynaud, Dominique (1995): Variations in atmospheric methane concentration during the Holocene epoch. Nature, 374(6517), 46-49, https://doi.org/10.1038/374046a0 Chappellaz, Jérôme A (1990): Etude du methane atmospherique au cours du dernier cycle climatique a partir d lanalyse de lair piege dans la glace antarctique. PhD Thesis, University of Grenoble, 214 pp Chappellaz, Jérôme A; Blunier, Thomas; Raynaud, Dominique; Barnola, Jean-Marc; Schwander, Jakob; Stauffer, Bernhard (1993): Synchronous changes in atmospheric CH4 and Greenland climate between 40 and 8 kyr B.P. Nature, 366(6454), 443-445, https://doi.org/10.1038/366443a0 GRIP/GISP (1997): The Greenland Summit Ice Cores CD-ROM GISP2/GRIP. National Snow and Ice Data Center, University of Colorado at Boulder, and World Data Center for Paleoclimatology, National Geophysical Data Center, Boulder Colorado, CD-ROM, https://store.pangaea.de/Projects/GRIP-GISP/grip-gisp.iso Raynaud, Dominique; Chappellaz, Jérôme A; Barnola, Jean-Marc; Korotkevich, Yevgeniy S; Lorius, C (1988): Climatic and CH4 cycle implications of glacial-interglacial CH4 change in the Vostok ice core. Nature, 333(6174), 655-657, https://doi.org/10.1038/333655a0 Project(s): Greenland Ice Core Projects (GRIP/GISP/NGRIP) (URI: https://en.wikipedia.org/wiki/Greenland_ice_core_project) Coverage: LATITUDE: 72.570000 * LONGITUDE: -37.620000 DATE/TIME START: 1989-06-01T00:00:00 * DATE/TIME END: 1992-07-12T00:00:00 MINIMUM DEPTH, ice/snow: 111.11 m * MAXIMUM DEPTH, ice/snow: 1219.34 m Event(s): GRIP * LATITUDE: 72.570000 * LONGITUDE: -37.620000 * DATE/TIME START: 1989-06-01T00:00:00 * DATE/TIME END: 1992-07-12T00:00:00 * ELEVATION: 3232.0 m * Penetration: 3028.8 m * Recovery: 3028.8 m * LOCATION: Greenland * CAMPAIGN: GRIP * BASIS: Sampling/drilling ice * METHOD/DEVICE: ISTUK electromechanical drill (ISTUK) (URI: https://icedrill.org/library/new-improved-version-istuk-ice-core-drill) Comment: Depth below the surface of summer 1989. One sample = 2 cm. Age is Gas age. Data measured in Bern. Parameter(s): DEPTH, ice/snow [m] (Depth ice/snow) * GEOCODE AGE [ka BP] (Age) * GEOCODE Methane [ppbv] (CH4) * PI: Blunier, Thomas (https://orcid.org/0000-0002-6065-7747, blunier@nbi.ku.dk) * METHOD/DEVICE: Gas chromatography Methane, minimum [mg/kg] (CH4 min) * PI: Blunier, Thomas (https://orcid.org/0000-0002-6065-7747, blunier@nbi.ku.dk) * METHOD/DEVICE: Gas chromatography * COMMENT: two sigma experimental Methane, maximum [mg/kg] (CH4 max) * PI: Blunier, Thomas (https://orcid.org/0000-0002-6065-7747, blunier@nbi.ku.dk) * METHOD/DEVICE: Gas chromatography * COMMENT: two sigma experimental License: Creative Commons Attribution 3.0 Unported (CC-BY-3.0) (URI: https://creativecommons.org/licenses/by/3.0/) Size: 255 data points */ Depth ice/snow [m] Age [ka BP] CH4 [ppbv] CH4 min [mg/kg] CH4 max [mg/kg] 111.11 0.129 796 0.776 0.816 132.56 0.221 710 0.690 0.730 132.56 0.221 724 0.704 0.744 154.56 0.319 713 0.693 0.733 176.56 0.425 723 0.703 0.743 198.56 0.519 698 0.678 0.718 220.56 0.628 717 0.697 0.737 242.56 0.730 717 0.697 0.737 276.07 0.893 702 0.682 0.722 276.07 0.893 709 0.689 0.729 276.09 0.893 715 0.695 0.735 276.09 0.893 697 0.677 0.717 309.09 1.050 670 0.650 0.690 309.09 1.050 687 0.667 0.707 331.09 1.171 657 0.637 0.677 331.09 1.171 647 0.627 0.667 353.09 1.281 673 0.653 0.693 353.09 1.281 664 0.644 0.684 375.09 1.379 676 0.656 0.696 375.09 1.379 696 0.676 0.716 397.07 1.511 663 0.643 0.683 397.07 1.511 665 0.645 0.685 397.09 1.511 654 0.634 0.674 418.56 1.609 655 0.635 0.675 418.56 1.609 656 0.636 0.676 441.09 1.716 663 0.643 0.683 441.09 1.716 660 0.640 0.680 463.09 1.852 666 0.646 0.686 463.09 1.852 686 0.666 0.706 485.09 1.962 661 0.641 0.681 485.09 1.962 650 0.630 0.670 507.05 2.079 640 0.620 0.660 507.05 2.079 645 0.625 0.665 507.07 2.079 646 0.626 0.666 507.09 2.079 637 0.617 0.657 507.09 2.079 655 0.635 0.675 528.56 2.209 642 0.622 0.662 528.56 2.209 637 0.617 0.657 551.07 2.326 640 0.620 0.660 551.09 2.326 638 0.618 0.658 575.84 2.461 631 0.611 0.651 575.84 2.461 631 0.611 0.651 595.09 2.566 630 0.610 0.650 595.09 2.566 626 0.606 0.646 617.09 2.687 603 0.583 0.623 617.09 2.687 616 0.596 0.636 638.56 2.808 628 0.608 0.648 638.56 2.808 636 0.616 0.656 661.09 2.944 621 0.601 0.641 661.09 2.944 619 0.599 0.639 683.05 3.065 610 0.590 0.630 683.05 3.065 602 0.582 0.622 746.34 3.441 604 0.584 0.624 746.34 3.441 609 0.589 0.629 779.37 3.654 645 0.625 0.665 779.38 3.654 640 0.620 0.660 779.40 3.654 632 0.612 0.652 779.40 3.654 641 0.621 0.661 812.92 3.855 625 0.605 0.645 812.94 3.855 619 0.599 0.639 812.94 3.855 636 0.616 0.656 842.02 4.045 611 0.591 0.631 842.03 4.045 598 0.578 0.618 901.46 4.437 609 0.589 0.629 901.46 4.437 624 0.604 0.644 930.11 4.643 627 0.607 0.647 930.11 4.643 626 0.606 0.646 959.21 4.848 602 0.582 0.622 959.21 4.848 605 0.585 0.625 986.71 5.053 590 0.570 0.610 986.71 5.053 596 0.576 0.616 1041.12 5.453 591 0.571 0.611 1041.14 5.453 588 0.568 0.608 1068.66 5.665 581 0.561 0.601 1068.66 5.665 589 0.569 0.609 1095.04 5.874 607 0.587 0.627 1095.04 5.874 607 0.587 0.627 1121.46 6.086 608 0.588 0.628 1121.46 6.086 613 0.593 0.633 1170.39 6.483 623 0.603 0.643 1170.39 6.483 632 0.612 0.652 1195.14 6.700 622 0.602 0.642 1195.14 6.700 615 0.595 0.635 1219.34 6.910 663 0.643 0.683 1219.34 6.910 654 0.634 0.674