Year
|
All greenhouse gases including aerosols
|
50 % probability of below 2 °C
|
50 % probability of below 1.5 °C
|
All greenhouse gases*
|
1970
|
322.407
|
530
|
430
|
291.676
|
1975
|
332.361
|
530
|
430
|
302.929
|
1978
|
340.274
|
530
|
430
|
311.531
|
1979
|
343.48
|
530
|
430
|
314.935
|
1980
|
346.528
|
530
|
430
|
318.203
|
1981
|
348.993
|
530
|
430
|
320.944
|
1982
|
351.621
|
530
|
430
|
323.844
|
1983
|
354.172
|
530
|
430
|
326.679
|
1984
|
356.803
|
530
|
430
|
329.597
|
1985
|
359.284
|
530
|
430
|
332.383
|
1986
|
361.952
|
530
|
430
|
335.351
|
1987
|
364.583
|
530
|
430
|
338.292
|
1988
|
368.518
|
530
|
430
|
342.453
|
1989
|
371.388
|
530
|
430
|
345.635
|
1990
|
373.393
|
530
|
430
|
348.019
|
1991
|
376.378
|
530
|
430
|
350.706
|
1992
|
378.021
|
530
|
430
|
352.143
|
1993
|
379.519
|
530
|
430
|
353.443
|
1994
|
382.057
|
530
|
430
|
355.712
|
1995
|
385.01
|
530
|
430
|
358.365
|
1996
|
387.677
|
530
|
430
|
360.75
|
1997
|
389.591
|
530
|
430
|
362.434
|
1998
|
393.123
|
530
|
430
|
365.622
|
1999
|
396.301
|
530
|
430
|
368.478
|
2000
|
398.227
|
530
|
430
|
370.169
|
2001
|
399.895
|
530
|
430
|
372.23
|
2002
|
402.249
|
530
|
430
|
374.934
|
2003
|
405.248
|
530
|
430
|
378.248
|
2004
|
406.965
|
530
|
430
|
380.372
|
2005
|
409.583
|
530
|
430
|
383.344
|
2006
|
413.025
|
530
|
430
|
385.88
|
2007
|
416.08
|
530
|
430
|
388.052
|
2008
|
419.74
|
530
|
430
|
390.787
|
2009
|
422.438
|
530
|
430
|
392.626
|
2010
|
426.126
|
530
|
430
|
395.386
|
2011
|
429.507
|
530
|
430
|
397.822
|
2012
|
433.016
|
530
|
430
|
400.472
|
2013
|
437.339
|
530
|
430
|
403.876
|
2014
|
440.862
|
530
|
430
|
406.54
|
2015
|
444.536
|
530
|
430
|
409.344
|