Annual mean concentrations of methane observed at Cape Grim, Tasmania, and from air extracted from Antarctic firn and ice cores, 1500–2015
Methane – Antarctic firnMethane – Cape Grim
1500698.57
1501699.92
1502701.27
1503702.63
1504703.96
1505705.25
1506706.44
1507707.52
1508708.44
1509709.22
1510709.85
1511710.35
1512710.73
1513711
1514711.17
1515711.24
1516711.23
1517711.15
1518711.01
1519710.81
1520710.57
1521710.29
1522709.99
1523709.67
1524709.35
1525709.03
1526708.73
1527708.45
1528708.21
1529708.01
1530707.86
1531707.77
1532707.75
1533707.78
1534707.85
1535707.95
1536708.07
1537708.19
1538708.31
1539708.45
1540708.61
1541708.8
1542709.03
1543709.31
1544709.64
1545710.03
1546710.5
1547711.04
1548711.67
1549712.4
1550713.23
1551714.17
1552715.21
1553716.3
1554717.39
1555718.43
1556719.36
1557720.14
1558720.7
1559721.01
1560721
1561720.63
1562719.85
1563718.66
1564717.13
1565715.29
1566713.22
1567710.96
1568708.57
1569706.1
1570703.6
1571701.13
1572698.75
1573696.5
1574694.45
1575692.63
1576691.04
1577689.64
1578688.41
1579687.32
1580686.36
1581685.49
1582684.7
1583683.95
1584683.22
1585682.49
1586681.72
1587680.9
1588680
1589679
1590677.87
1591676.69
1592675.57
1593674.62
1594673.85
1595673.28
1596672.89
1597672.69
1598672.67
1599672.83
1600673.18
1601673.7
1602674.41
1603675.29
1604676.34
1605677.57
1606678.93
1607680.37
1608681.82
1609683.23
1610684.53
1611685.67
1612686.58
1613687.26
1614687.74
1615688.05
1616688.23
1617688.31
1618688.32
1619688.29
1620688.26
1621688.26
1622688.32
1623688.47
1624688.76
1625689.18
1626689.74
1627690.39
1628691.1
1629691.84
1630692.58
1631693.29
1632693.94
1633694.52
1634695.01
1635695.4
1636695.66
1637695.78
1638695.74
1639695.53
1640695.11
1641694.48
1642693.63
1643692.59
1644691.4
1645690.12
1646688.79
1647687.47
1648686.19
1649685
1650683.96
1651683.1
1652682.44
1653681.96
1654681.65
1655681.51
1656681.52
1657681.67
1658681.95
1659682.36
1660682.88
1661683.5
1662684.22
1663685.02
1664685.89
1665686.83
1666687.82
1667688.85
1668689.92
1669691.01
1670692.11
1671693.19
1672694.25
1673695.28
1674696.25
1675697.14
1676697.96
1677698.67
1678699.27
1679699.73
1680700.05
1681700.21
1682700.19
1683699.98
1684699.57
1685698.96
1686698.17
1687697.21
1688696.08
1689694.81
1690693.4
1691691.86
1692690.22
1693688.52
1694686.78
1695685.06
1696683.39
1697681.78
1698680.24
1699678.77
1700677.38
1701676.08
1702674.86
1703673.74
1704672.72
1705671.82
1706671.02
1707670.35
1708669.8
1709669.38
1710669.1
1711668.96
1712668.97
1713669.14
1714669.46
1715669.96
1716670.62
1717671.47
1718672.49
1719673.71
1720675.12
1721676.73
1722678.56
1723680.59
1724682.84
1725685.3
1726687.93
1727690.67
1728693.47
1729696.29
1730699.07
1731701.77
1732704.33
1733706.71
1734708.86
1735710.72
1736712.26
1737713.46
1738714.33
1739714.88
1740715.1
1741715.01
1742714.61
1743713.91
1744712.9
1745711.64
1746710.23
1747708.78
1748707.41
1749706.23
1750705.35
1751704.87
1752704.73
1753704.82
1754705.02
1755705.32
1756705.73
1757706.25
1758706.88
1759707.63
1760708.51
1761709.51
1762710.65
1763711.92
1764713.34
1765714.87
1766716.48
1767718.12
1768719.74
1769721.32
1770722.79
1771724.14
1772725.3
1773726.25
1774726.94
1775727.33
1776727.44
1777727.35
1778727.17
1779726.99
1780726.93
1781727.09
1782727.46
1783727.91
1784728.33
1785728.58
1786728.57
1787728.34
1788727.98
1789727.53
1790727.09
1791726.7
1792726.45
1793726.4
1794726.62
1795727.18
1796728.14
1797729.54
1798731.37
1799733.43
1800735.5
1801737.35
1802738.91
1803740.2
1804741.27
1805742.12
1806742.8
1807743.32
1808743.72
1809744.01
1810744.23
1811744.41
1812744.57
1813744.73
1814744.93
1815745.19
1816745.54
1817746.01
1818746.64
1819747.46
1820748.51
1821749.82
1822751.4
1823753.19
1824755.09
1825757.01
1826758.85
1827760.52
1828761.92
1829763.01
1830763.86
1831764.57
1832765.24
1833765.97
1834766.87
1835768.01
1836769.36
1837770.76
1838772.2
1839773.68
1840775.22
1841776.83
1842778.57
1843780.46
1844782.41
1845784.33
1846786.15
1847787.92
1848789.75
1849791.69
1850793.32
1851793.88
1852793.57
1853792.82
1854792.1
1855791.62
1856791.46
1857791.82
1858792.7
1859794.03
1860795.76
1861797.8
1862800.11
1863802.61
1864805.21
1865807.69
1866809.87
1867811.81
1868813.64
1869815.49
1870817.48
1871819.71
1872822.05
1873824.37
1874826.59
1875828.6
1876830.34
1877831.9
1878833.38
1879834.92
1880836.6
1881838.4
1882840.3
1883842.23
1884844.18
1885846.03
1886847.51
1887848.62
1888849.64
1889850.77
1890852.01
1891853.29
1892854.75
1893856.56
1894858.79
1895861.2
1896863.61
1897866.19
1898869.08
1899872.24
1900875.58
1901879.04
1902882.76
1903886.87
1904891.39
1905896.32
1906901.64
1907907.32
1908913.27
1909918.92
1910923.61
1911926.9
1912929.26
1913931.37
1914933.85
1915937.2
1916941.79
1917947.58
1918954.36
1919961.66
1920968.97
1921975.91
1922982.44
1923988.54
1924994.2
1925999.4
19261004.23
19271008.97
19281013.75
19291018.65
19301023.51
19311028.25
19321033
19331037.95
19341043.27
19351049.02
19361054.92
19371060.66
19381066.07
19391071.12
19401075.74
19411079.91
19421083.59
19431086.58
19441089.09
19451091.79
19461095.18
19471099.41
19481104.57
19491110.54
19501117.27
19511124.79
19521133.24
19531142.61
19541152.87
19551164.12
19561176.11
19571187.5
19581198.16
19591208.98
19601220.25
19611231.97
19621244.13
19631256.57
19641268.88
19651280.9
19661293.5
19671307.43
19681323.13
19691340.1
19701357.58
19711374.96
19721392
19731408.62
19741424.45
19751439.75
19761454.73
19771469.4
19781483.85
19791498.4
19801513.57
19811529.87
19821546.71
19831563.4
19841579.62
19851602.86
19861617.84
19871631.89
19881642.05
19891655.75
19901662.86
19911674.07
19921687.01
19931688.82
19941694.12
19951700.56
19961701.83
19971709.05
19981716.41
19991726.63
20001728.14
20011726.86
20021728.73
20031729.46
20041728.78
20051728.06
20061727.45
20071733.03
20081741.56
20091744.13
20101750.7
20111758.08
20121762.15
20131765.47
20141774.52
20151786.26
2016
2017
2018
2019