Atmospheric Methane and Nitrous Oxide of the Late Pleistocene from Antarctic Ice Cores Export

@article{citeulike:409888, abstract = {The European Project for Ice Coring in Antarctica Dome C ice core enables us to extend existing records of atmospheric methane (CH4) and nitrous oxide (N2O) back to 650,000 years before the present. A combined record of CH4 measured along the Dome C and the Vostok ice cores demonstrates, within the resolution of our measurements, that preindustrial concentrations over Antarctica have not exceeded 773 {+/-} 15 ppbv (parts per billion by volume) during the past 650,000 years. Before 420,000 years ago, when interglacials were cooler, maximum CH4 concentrations were only about 600 ppbv, similar to lower Holocene values. In contrast, the N2O record shows maximum concentrations of 278 {+/-} 7 ppbv, slightly higher than early Holocene values.}, author = {Spahni, Renato and Chappellaz, Jerome and Stocker, Thomas F. and Loulergue, Laetitia and Hausammann, Gregor and Kawamura, Kenji and Fluckiger, Jacqueline and Schwander, Jakob and Raynaud, Dominique and Masson-Delmotte, Valerie and Jouzel, Jean}, citeulike-article-id = {409888}, citeulike-linkout-0 = {http://dx.doi.org/10.1126/science.1120132}, citeulike-linkout-1 = {http://www.sciencemag.org/cgi/content/abstract/310/5752/1317}, doi = {10.1126/science.1120132}, journal = {Science}, keywords = {researchsynopsis}, month = {November}, number = {5752}, pages = {1317--1321}, posted-at = {2005-11-28 03:12:24}, priority = {2}, title = {Atmospheric Methane and Nitrous Oxide of the Late Pleistocene from Antarctic Ice Cores}, url = {http://dx.doi.org/10.1126/science.1120132}, volume = {310}, year = {2005} }

TY - JOUR ID - citeulike:409888 L3 - citeulike-article-id:409888 N2 - The European Project for Ice Coring in Antarctica Dome C ice core enables us to extend existing records of atmospheric methane (CH4) and nitrous oxide (N2O) back to 650,000 years before the present. A combined record of CH4 measured along the Dome C and the Vostok ice cores demonstrates, within the resolution of our measurements, that preindustrial concentrations over Antarctica have not exceeded 773 {+/-} 15 ppbv (parts per billion by volume) during the past 650,000 years. Before 420,000 years ago, when interglacials were cooler, maximum CH4 concentrations were only about 600 ppbv, similar to lower Holocene values. In contrast, the N2O record shows maximum concentrations of 278 {+/-} 7 ppbv, slightly higher than early Holocene values. IS - 5752 JF - Science EP - 1321 TI - Atmospheric Methane and Nitrous Oxide of the Late Pleistocene from Antarctic Ice Cores VL - 310 SP - 1317 KW - researchsynopsis AU - Spahni, Renato AU - Chappellaz, Jerome AU - Stocker, Thomas AU - Loulergue, Laetitia AU - Hausammann, Gregor AU - Kawamura, Kenji AU - Fluckiger, Jacqueline AU - Schwander, Jakob AU - Raynaud, Dominique AU - Masson-Delmotte, Valerie AU - Jouzel, Jean PY - 2005/11/25/ UR - http://dx.doi.org/10.1126/science.1120132 ER -