File:800,000-, 2,000-, 139-year global average temperature.png

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Captions

Captions

Three charts of global average temperature three respective time periods: 800,000 years, 2,000 years, and 139 years, showing current global warming in the perspective of geologic time.

Summary[edit]

Description
English: Three charts of global average temperature three respective time periods: 800,000 years, 2,000 years, and 139 years, showing current global warming in the perspective of geologic time.


Suggested text for use in articles:
Top chart: Earth's climate has cycled between ice ages and warm interglacial periods, with each cycle taking tens of thousands of years or more.
Middle chart: Global average temperature was in a cooling trend for thousands of years before fossil fuel based industrialization. Since then, it has increased about a full 1°C—in a time period less than 1/3,000th the width of the top chart.
Bottom chart: This 1°C increase, commonly called global warming, accelerated since 1980—a period less than 1/20,000th the width of the top chart.

SOURCES (and related explanations):
1. Top chart (800,000 years):
— Data itself:
— Chart is described in NASA "Earth observatory" webpage:
— Source provides 5,788 points of data for the 800,000 year period, with many more points for recent millennia than for ancient millennia. Accordingly, uploader RCraig09 averaged readings for each millennium to create a list of 800 data points (one for each millennium), which was used in Microsoft Excel to generate the top chart.
— Actual data is provided in expandable text, below.

Description from data source page:
— "NAME OF DATA SET: EPICA Dome C Ice Core 800KYr Deuterium Data and Temperature Estimates
— LAST UPDATE: 11/26/2007 (Replaced age model. This file now includes EDC3 age model. Previous version of this file dated 10/16/2007 erroneously included the older EDC1-EDC2 age model)
— CONTRIBUTOR: ValÈrie Masson-Delmotte, LSCE/IPSL IGBP PAGES/WDCA CONTRIBUTION SERIES NUMBER: 2007-091
— SUGGESTED DATA CITATION: Jouzel, J., et al. 2007. EPICA Dome C Ice Core 800KYr Deuterium Data and Temperature Estimates. IGBP PAGES/World Data Center for Paleoclimatology Data Contribution Series # 2007-091. NOAA/NCDC Paleoclimatology Program, Boulder CO, USA.
— ORIGINAL REFERENCE: Jouzel, J., V. Masson-Delmotte, O. Cattani, G. Dreyfus, S. Falourd, G. Hoffmann, B. Minster, J. Nouet, J.M. Barnola, J. Chappellaz, J.C. Gallet, S. Johnsen, M. Leuenberger, L. Loulergue, D. Luethi, H. Oerter, F. Parrenin, G. Raisbeck, D. Raynaud, A. Schilt, J. R. Souchez, R. Spahni, B. Stauffer, J.P. Steffensen, B. Stenni, T.F. Stocker, J.L. Tison, M. Werner, and E.W. Wolff. 2007. Orbital and Millennial Antarctic Climate Variability over the Past 800,000 Years. Science, Vol. 317, No. 5839, pp.793-797, 10 August 2007.
— ABSTRACT: A high-resolution deuterium profile is now available along the entire European Project for Ice Coring in Antarctica Dome C ice core, extending this climate record back to marine isotope stage 20.2, ~800,000 years ago. Experiments performed with an atmospheric general circulation model including water isotopes support its temperature interpretation. We assessed the general events and their smoothed Antarctic counterparts for this Dome C record, which reveals the presence of such features with similar during previous glacial periods. We suggest that the interplay between obliquity and precession accounts for the variable intensity interglacial periods in ice core records.
— GEOGRAPHIC REGION: Antarctica
— PERIOD OF RECORD: 803 KYrBP - present
— ...Column 3: EDC3 age scale (years before year 1950)
— ...Column 5: Temperature estimate (temperature difference from the average of the last 1000 years)
"

2. Middle chart (2,000 years):
3. Bottom chart (139 years):
— In the NOAA wab page, choose 12-Month timescale, December, 1880-2019, Global, Land and Ocean, Plot.
— Data uses 1901-2000 base period (=0°C in the chart).
Date
Source Own work
Author RCraig09
Other versions

Licensing[edit]

DATA for top and bottom graphs is from NASA or NOAA—official work product of the United States government.
DATA for middle graph is sourced in File:Temperature reconstruction last two millennia.svg
I, the copyright holder of this work, hereby publish it under the following license:
w:en:Creative Commons
attribution share alike
This file is licensed under the Creative Commons Attribution-Share Alike 4.0 International license.
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
  • share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.

Listing of ACTUAL DATA for top and bottom charts[edit]

Click at right to show/hide ACTUAL DATA for 800,000 year chart

Millenium Temperature anomaly
0 0.80 Data point for end of current millenium (Millenium "0") is estimated from other sources (barely visible on this scale)
1 -0.15
2 -0.04
3 -0.13
4 -0.08
5 -0.04
6 -0.23
7 -0.60
8 -0.96
9 -1.20
10 -0.39
11 -0.31
12 -0.87
13 -4.00
14 -4.20
15 -3.79
16 -5.50
17 -7.33
18 -9.07
19 -9.42
20 -9.38
21 -9.44
22 -9.28
23 -9.39
24 -9.28
25 -9.60
26 -9.80
27 -9.69
28 -8.92
29 -8.87
30 -8.56
31 -8.97
32 -8.88
33 -8.76
34 -8.47
35 -8.24
36 -8.02
37 -8.14
38 -6.79
39 -6.75
40 -8.13
41 -8.23
42 -8.12
43 -7.80
44 -7.61
45 -8.02
46 -6.32
47 -5.78
48 -6.87
49 -7.49
50 -6.60
51 -7.05
52 -6.60
53 -6.14
54 -5.88
55 -6.70
56 -7.26
57 -6.78
58 -6.10
59 -5.55
60 -6.15
61 -6.89
62 -7.61
63 -8.63
64 -8.26
65 -8.70
66 -9.14
67 -9.01
68 -8.83
69 -8.64
70 -8.16
71 -6.25
72 -6.71
73 -7.73
74 -6.24
75 -5.11
76 -6.65
77 -6.63
78 -6.38
79 -5.89
80 -5.23
81 -4.93
82 -4.47
83 -3.48
84 -3.26
85 -4.09
86 -4.73
87 -5.60
88 -6.59
89 -5.99
90 -5.30
91 -5.64
92 -5.63
93 -5.17
94 -4.80
95 -4.38
96 -4.85
97 -4.68
98 -4.50
99 -4.67
100 -4.84
101 -4.49
102 -4.24
103 -5.12
104 -6.37
105 -5.26
106 -4.92
107 -4.13
108 -5.63
109 -6.78
110 -5.73
111 -5.29
112 -5.15
113 -4.53
114 -3.65
115 -2.60
116 -1.99
117 -1.23
118 -0.30
119 0.24
120 0.67
121 1.34
122 1.63
123 1.94
124 2.01
125 2.05
126 1.38
127 1.73
128 2.92
129 3.89
130 3.30
131 1.51
132 -0.72
133 -2.82
134 -4.23
135 -6.02
136 -7.39
137 -8.43
138 -8.03
139 -8.71
140 -8.76
141 -8.89
142 -8.48
143 -8.51
144 -8.59
145 -8.24
146 -8.43
147 -7.93
148 -8.29
149 -7.99
150 -7.51
151 -7.39
152 -7.62
153 -7.65
154 -8.29
155 -8.70
156 -8.82
157 -9.15
158 -8.81
159 -7.92
160 -7.17
161 -7.82
162 -7.50
163 -6.85
164 -8.09
165 -8.79
166 -8.35
167 -8.25
168 -7.23
169 -6.80
170 -7.28
171 -8.27
172 -6.86
173 -7.18
174 -8.15
175 -7.88
176 -8.48
177 -7.70
178 -6.33
179 -6.88
180 -8.37
181 -8.36
182 -8.86
183 -8.63
184 -8.82
185 -8.58
186 -8.10
187 -7.11
188 -4.86
189 -5.97
190 -6.59
191 -7.38
192 -6.26
193 -5.68
194 -6.84
195 -5.96
196 -4.90
197 -4.39
198 -3.11
199 -2.44
200 -2.18
201 -2.18
202 -2.69
203 -4.07
204 -4.60
205 -3.89
206 -3.30
207 -2.98
208 -2.74
209 -2.19
210 -1.90
211 -1.49
212 -1.94
213 -2.17
214 -2.19
215 -1.93
216 -1.92
217 -3.31
218 -4.43
219 -5.22
220 -5.70
221 -6.67
222 -7.63
223 -8.23
224 -8.45
225 -8.02
226 -6.64
227 -5.92
228 -7.36
229 -8.10
230 -6.28
231 -7.39
232 -6.53
233 -5.95
234 -5.10
235 -4.44
236 -3.40
237 -2.65
238 -2.40
239 -2.13
240 -1.86
241 -0.72
242 1.35
243 2.00
244 0.40
245 -2.43
246 -4.26
247 -6.55
248 -6.09
249 -6.10
250 -7.14
251 -7.56
252 -7.89
253 -8.05
254 -7.91
255 -7.74
256 -8.04
257 -7.33
258 -7.22
259 -6.91
260 -7.67
261 -7.68
262 -7.68
263 -7.47
264 -6.47
265 -7.17
266 -7.57
267 -7.98
268 -8.63
269 -8.61
270 -8.90
271 -8.93
272 -9.26
273 -9.27
274 -9.08
275 -8.82
276 -8.34
277 -8.86
278 -8.00
279 -8.44
280 -7.58
281 -6.52
282 -7.20
283 -6.35
284 -5.94
285 -5.87
286 -5.42
287 -5.26
288 -4.92
289 -5.00
290 -4.53
291 -4.54
292 -5.80
293 -6.50
294 -7.23
295 -7.71
296 -6.44
297 -6.38
298 -7.63
299 -6.90
300 -6.29
301 -5.86
302 -7.19
303 -6.07
304 -5.26
305 -5.08
306 -4.69
307 -6.12
308 -6.55
309 -5.69
310 -5.82
311 -5.44
312 -5.06
313 -4.47
314 -3.49
315 -3.18
316 -2.48
317 -2.70
318 -3.63
319 -4.67
320 -4.21
321 -3.37
322 -2.33
323 -1.50
324 -0.78
325 -0.15
326 0.50
327 0.48
328 0.69
329 0.96
330 0.57
331 0.45
332 0.60
333 2.63
334 3.33
335 2.26
336 -0.16
337 -2.43
338 -3.59
339 -5.36
340 -6.71
341 -8.43
342 -9.26
343 -9.26
344 -8.66
345 -8.74
346 -8.57
347 -8.32
348 -8.11
349 -7.72
350 -7.28
351 -7.86
352 -7.82
353 -7.73
354 -7.76
355 -8.79
356 -8.75
357 -8.68
358 -8.91
359 -8.54
360 -8.09
361 -8.27
362 -7.63
363 -7.13
364 -7.33
365 -7.90
366 -7.45
367 -7.59
368 -7.23
369 -7.84
370 -7.06
371 -6.57
372 -6.35
373 -5.50
374 -6.50
375 -7.79
376 -7.31
377 -6.71
378 -6.50
379 -6.03
380 -5.37
381 -5.05
382 -4.33
383 -5.16
384 -5.88
385 -4.97
386 -4.61
387 -3.60
388 -5.15
389 -6.18
390 -6.09
391 -4.92
392 -4.64
393 -3.68
394 -2.77
395 -2.21
396 -1.27
397 -0.68
398 -0.13
399 -0.01
400 0.37
401 1.14
402 1.64
403 2.07
404 2.02
405 2.08
406 2.34
407 2.51
408 2.41
409 1.98
410 1.76
411 1.55
412 0.94
413 0.43
414 0.35
415 0.25
416 0.33
417 0.62
418 0.35
419 -0.21
420 -0.39
421 -0.54
422 -1.60
423 -1.76
424 -2.08
425 -0.15
426 -1.72
427 -2.63
428 -4.43
429 -6.16
430 -7.19
431 -8.15
432 -8.19
433 -8.26
434 -8.38
435 -8.49
436 -8.47
437 -9.44
438 -9.20
439 -9.19
440 -9.10
441 -8.90
442 -8.38
443 -7.91
444 -7.46
445 -7.45
446 -7.57
447 -6.15
448 -6.44
449 -7.43
450 -7.46
451 -7.31
452 -7.07
453 -7.57
454 -6.58
455 -7.20
456 -8.21
457 -8.81
458 -8.83
459 -8.64
460 -8.34
461 -8.24
462 -7.30
463 -7.64
464 -8.08
465 -8.47
466 -8.17
467 -8.03
468 -8.11
469 -6.47
470 -6.78
471 -5.01
472 -4.31
473 -5.84
474 -6.95
475 -5.75
476 -4.85
477 -4.07
478 -4.92
479 -5.86
480 -5.05
481 -4.85
482 -4.44
483 -3.95
484 -3.56
485 -3.49
486 -3.34
487 -2.76
488 -2.51
489 -2.09
490 -2.33
491 -2.92
492 -3.31
493 -3.46
494 -3.64
495 -3.78
496 -3.70
497 -3.80
498 -3.90
499 -3.81
500 -4.28
501 -4.39
502 -4.49
503 -4.42
504 -4.22
505 -4.72
506 -5.15
507 -4.67
508 -4.66
509 -5.89
510 -5.67
511 -5.75
512 -5.75
513 -5.55
514 -5.00
515 -4.81
516 -4.05
517 -4.15
518 -3.69
519 -3.38
520 -3.55
521 -3.50
522 -3.46
523 -4.67
524 -4.41
525 -4.49
526 -4.81
527 -4.71
528 -4.45
529 -4.36
530 -5.56
531 -7.04
532 -7.42
533 -7.60
534 -7.22
535 -6.82
536 -6.76
537 -6.79
538 -7.00
539 -7.67
540 -7.51
541 -7.43
542 -7.19
543 -7.30
544 -7.64
545 -8.13
546 -8.03
547 -7.17
548 -7.00
549 -7.01
550 -5.75
551 -5.93
552 -6.71
553 -6.26
554 -5.06
555 -3.97
556 -3.67
557 -4.56
558 -5.37
559 -6.59
560 -5.90
561 -5.07
562 -4.30
563 -3.52
564 -2.91
565 -2.27
566 -1.93
567 -1.80
568 -1.54
569 -1.55
570 -1.42
571 -1.50
572 -1.54
573 -1.66
574 -1.51
575 -1.31
576 -1.38
577 -1.90
578 -1.94
579 -1.12
580 -1.19
581 -2.90
582 -4.38
583 -6.35
584 -6.40
585 -5.93
586 -6.01
587 -6.73
588 -5.65
589 -4.34
590 -3.48
591 -5.46
592 -5.49
593 -5.09
594 -4.48
595 -4.16
596 -5.88
597 -6.70
598 -5.98
599 -5.35
600 -4.99
601 -4.71
602 -4.33
603 -4.21
604 -3.92
605 -3.49
606 -3.21
607 -2.65
608 -2.01
609 -1.56
610 -1.18
611 -1.45
612 -1.46
613 -1.20
614 -1.17
615 -0.97
616 -1.37
617 -2.11
618 -1.79
619 -2.34
620 -1.96
621 -2.27
622 -2.52
623 -2.84
624 -2.66
625 -2.20
626 -3.19
627 -4.98
628 -7.17
629 -8.37
630 -8.72
631 -8.80
632 #N/A
633 -8.24
634 -8.90
635 -8.92
636 #N/A
637 -8.39
638 -8.68
639 -8.84
640 #N/A
641 -8.86
642 -8.21
643 -7.73
644 #N/A
645 -7.68
646 -7.71
647 -7.82
648 -7.46
649 -7.07
650 -7.47
651 -7.29
652 -7.72
653 -7.92
654 -7.58
655 -6.87
656 -6.71
657 -7.38
658 -7.52
659 -8.36
660 -8.33
661 -8.30
662 -8.00
663 -7.82
664 -8.42
665 -8.94
666 -9.04
667 -8.95
668 -8.89
669 -8.31
670 -7.26
671 -7.62
672 -8.21
673 -7.84
674 -7.51
675 -6.80
676 -5.92
677 -7.03
678 -6.28
679 -4.91
680 -6.21
681 -7.10
682 -5.80
683 -5.27
684 -5.35
685 -4.76
686 -4.55
687 -3.92
688 -3.47
689 -3.52
690 -3.18
691 -2.72
692 -2.65
693 -2.01
694 -1.74
695 -2.01
696 -1.84
697 -1.87
698 -1.89
699 -2.24
700 -2.62
701 -2.31
702 -2.06
703 -2.43
704 -2.76
705 -3.21
706 -3.61
707 -3.69
708 -3.53
709 -4.02
710 -3.97
711 -4.03
712 -4.19
713 -4.10
714 -4.02
715 -4.72
716 -5.26
717 -5.91
718 -6.47
719 -6.92
720 -7.13
721 -8.34
722 -8.32
723 -7.14
724 -5.75
725 -5.13
726 -6.10
727 -5.96
728 -5.94
729 -5.69
730 -5.31
731 -5.26
732 -4.53
733 -3.79
734 -3.94
735 -4.07
736 -3.88
737 -4.50
738 -5.07
739 -5.95
740 -7.62
741 -8.25
742 -8.36
743 -8.78
744 -8.76
745 -8.54
746 -8.56
747 -8.63
748 -8.66
749 -8.52
750 -8.41
751 -8.59
752 -8.40
753 -8.24
754 -7.88
755 -7.38
756 -6.25
757 -5.30
758 -5.54
759 -6.25
760 -7.20
761 -7.33
762 -6.25
763 -5.16
764 -4.74
765 -5.10
766 -5.89
767 -6.20
768 -5.33
769 -4.54
770 -3.82
771 -3.93
772 -4.42
773 -4.13
774 -3.65
775 -2.96
776 -2.69
777 -2.69
778 -2.34
779 -2.15
780 -2.17
781 -2.33
782 -1.84
783 -1.87
784 -1.71
785 -1.10
786 -1.04
787 -0.59
788 -2.06
789 -2.59
790 -3.40
791 -4.66
792 -5.61
793 -5.91
794 -6.92
795 -8.23
796 -8.53
797 -8.73
798 -8.54
799 -8.88
800 -8.92
801 -8.82

Documentation for middle chart is in the Wikimedia page for image file File:Temperature reconstruction last two millennia.svg by User talk:Femkemilene
Click at right to show/hide ACTUAL DATA for 1880-2018 chart

Year Global avg 5ma
1880 -0.12
1881 -0.09
1882 -0.10
1883 -0.18
1884 -0.27 -0.15
1885 -0.25 -0.18
1886 -0.25 -0.21
1887 -0.29 -0.25
1888 -0.13 -0.24
1889 -0.09 -0.20
1890 -0.35 -0.22
1891 -0.25 -0.22
1892 -0.30 -0.22
1893 -0.32 -0.26
1894 -0.30 -0.30
1895 -0.24 -0.28
1896 -0.09 -0.25
1897 -0.10 -0.21
1898 -0.27 -0.20
1899 -0.16 -0.17
1900 -0.08 -0.14
1901 -0.15 -0.15
1902 -0.25 -0.18
1903 -0.38 -0.20
1904 -0.46 -0.26
1905 -0.28 -0.30
1906 -0.21 -0.32
1907 -0.38 -0.34
1908 -0.43 -0.35
1909 -0.44 -0.35
1910 -0.40 -0.37
1911 -0.44 -0.42
1912 -0.34 -0.41
1913 -0.32 -0.39
1914 -0.14 -0.33
1915 -0.09 -0.27
1916 -0.32 -0.24
1917 -0.40 -0.25
1918 -0.30 -0.25
1919 -0.25 -0.27
1920 -0.23 -0.30
1921 -0.16 -0.27
1922 -0.24 -0.24
1923 -0.25 -0.23
1924 -0.24 -0.22
1925 -0.18 -0.21
1926 -0.08 -0.20
1927 -0.17 -0.18
1928 -0.18 -0.17
1929 -0.33 -0.19
1930 -0.11 -0.17
1931 -0.06 -0.17
1932 -0.13 -0.16
1933 -0.26 -0.18
1934 -0.11 -0.13
1935 -0.15 -0.14
1936 -0.12 -0.15
1937 -0.01 -0.13
1938 -0.02 -0.08
1939 0.01 -0.06
1940 0.16 0.00
1941 0.27 0.08
1942 0.11 0.11
1943 0.10 0.13
1944 0.28 0.18
1945 0.18 0.19
1946 -0.01 0.13
1947 -0.04 0.10
1948 -0.05 0.07
1949 -0.07 0.00
1950 -0.16 -0.07
1951 0.00 -0.06
1952 0.04 -0.05
1953 0.13 -0.01
1954 -0.10 -0.02
1955 -0.13 -0.01
1956 -0.18 -0.05
1957 0.07 -0.04
1958 0.13 -0.04
1959 0.08 -0.01
1960 0.05 0.03
1961 0.09 0.08
1962 0.11 0.09
1963 0.12 0.09
1964 -0.14 0.05
1965 -0.07 0.02
1966 -0.01 0.00
1967 0.00 -0.02
1968 -0.03 -0.05
1969 0.11 0.00
1970 0.06 0.03
1971 -0.07 0.01
1972 0.04 0.02
1973 0.19 0.07
1974 -0.06 0.03
1975 0.01 0.02
1976 -0.07 0.02
1977 0.21 0.06
1978 0.12 0.04
1979 0.23 0.10
1980 0.28 0.15
1981 0.32 0.23
1982 0.19 0.23
1983 0.36 0.28
1984 0.17 0.26
1985 0.16 0.24
1986 0.24 0.22
1987 0.38 0.26
1988 0.39 0.27
1989 0.29 0.29
1990 0.45 0.35
1991 0.39 0.38
1992 0.24 0.35
1993 0.28 0.33
1994 0.34 0.34
1995 0.47 0.34
1996 0.32 0.33
1997 0.51 0.38
1998 0.65 0.46
1999 0.44 0.48
2000 0.43 0.47
2001 0.57 0.52
2002 0.62 0.54
2003 0.64 0.54
2004 0.58 0.57
2005 0.67 0.62
2006 0.64 0.63
2007 0.62 0.63
2008 0.55 0.61
2009 0.65 0.63
2010 0.73 0.64
2011 0.58 0.63
2012 0.64 0.63
2013 0.68 0.66
2014 0.74 0.67
2015 0.93 0.71
2016 0.99 0.80
2017 0.91 0.85
2018 0.82 0.88

File history

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Date/TimeThumbnailDimensionsUserComment
current02:20, 20 June 2021Thumbnail for version as of 02:20, 20 June 20213,000 × 7,000 (2.31 MB)RCraig09 (talk | contribs)Version 5: Changing caption of top chart, to be more specific, to overcome Deletion Request
22:09, 27 April 2021Thumbnail for version as of 22:09, 27 April 20213,000 × 7,000 (2.1 MB)RCraig09 (talk | contribs)Version 4: reduced file size at CloudConvert.com
15:55, 23 February 2020Thumbnail for version as of 15:55, 23 February 20203,000 × 7,000 (5.02 MB)RCraig09 (talk | contribs)Version THREE: modified 1880- chart legends. . . . Corrected pixellation in arrows.
05:03, 14 October 2019Thumbnail for version as of 05:03, 14 October 20191,500 × 3,500 (648 KB)RCraig09 (talk | contribs)Changing background colors to be neutral.
21:37, 4 October 2019Thumbnail for version as of 21:37, 4 October 20191,500 × 3,500 (704 KB)RCraig09 (talk | contribs)User created page with UploadWizard

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