DOI: 10.25921/asrw-kn13
title: NOAA/WDS Paleoclimatology - East Asia 2,000 Year Decadal Warm Season Temperature Reconstructions

description: East Asia has experienced strong warming since the 1960s accompanied by an increased frequency of heat waves and shrinking glaciers over the Tibetan Plateau and the Tien Shan. Here, we place the recent warmth in a long-term perspective by presenting a new spatially resolved warm-season (May-September) temperature reconstruction for the period 1-2000 CE using 59 multiproxy records from a wide range of Asian regions. Our Bayesian Hierarchical Model (BHM) based reconstructions generally agree with earlier shorter regional temperature reconstructions but are more stable due to additional temperature sensitive proxies from a wide range of Asian regions. We find a rather warm period during the first two centuries CE, followed by a multi-century long cooling period and again a warm interval covering the 900-1200 CE period (Medieval Climate Anomaly, MCA). The interval from 1450 to 1850 CE (Little Ice Age, LIA) was characterized by cooler conditions and the last 150 years are characterized by a continuous warming until recent times. Our results also suggest that the 1990s were likely the warmest decade in at least 1200 years. The comparison between an ensemble of climate model simulations and our summer reconstructions since 850 CE shows good agreement and an important role of internal variability and external forcing on multi-decadal time-scales.
description: Multiproxy reconstructions of warm season (May-September) East Asia temperatures at decadal resolution. The regional Bayesian Hierarchical Model (BHM) regional-wide reconstructions extend back 2,000 years, and the gridded (5x5 degrees) field reconstructions for 1200 years.

Latitude-Longitude pairs and corresponding Location Numbers for Field Reconstructions:
Locs	Lon	Lat
1	62.5	27.5
2	62.5	32.5
3	62.5	37.5
4	62.5	42.5
5	62.5	47.5
6	62.5	52.5
7	62.5	57.5
8	67.5	22.5
9	67.5	27.5
10	67.5	32.5
11	67.5	37.5
12	67.5	42.5
13	67.5	47.5
14	67.5	52.5
15	67.5	57.5
16	72.5	17.5
17	72.5	22.5
18	72.5	27.5
19	72.5	32.5
20	72.5	37.5
21	72.5	42.5
22	72.5	47.5
23	72.5	52.5
24	72.5	57.5
25	77.5	12.5
26	77.5	17.5
27	77.5	22.5
28	77.5	27.5
29	77.5	32.5
30	77.5	37.5
31	77.5	42.5
32	77.5	47.5
33	77.5	52.5
34	77.5	57.5
35	82.5	17.5
36	82.5	22.5
37	82.5	27.5
38	82.5	32.5
39	82.5	37.5
40	82.5	42.5
41	82.5	47.5
42	82.5	52.5
43	82.5	57.5
44	87.5	22.5
45	87.5	27.5
46	87.5	32.5
47	87.5	37.5
48	87.5	42.5
49	87.5	47.5
50	87.5	52.5
51	87.5	57.5
52	92.5	22.5
53	92.5	27.5
54	92.5	32.5
55	92.5	37.5
56	92.5	42.5
57	92.5	47.5
58	92.5	52.5
59	92.5	57.5
60	97.5	17.5
61	97.5	22.5
62	97.5	27.5
63	97.5	32.5
64	97.5	37.5
65	97.5	42.5
66	97.5	47.5
67	97.5	52.5
68	97.5	57.5
69	102.5	12.5
70	102.5	17.5
71	102.5	22.5
72	102.5	27.5
73	102.5	32.5
74	102.5	37.5
75	102.5	42.5
76	102.5	47.5
77	102.5	52.5
78	102.5	57.5
79	107.5	12.5
80	107.5	17.5
81	107.5	22.5
82	107.5	27.5
83	107.5	32.5
84	107.5	37.5
85	107.5	42.5
86	107.5	47.5
87	107.5	52.5
88	107.5	57.5
89	112.5	22.5
90	112.5	27.5
91	112.5	32.5
92	112.5	37.5
93	112.5	42.5
94	112.5	47.5
95	112.5	52.5
96	112.5	57.5
97	117.5	22.5
98	117.5	27.5
99	117.5	32.5
100	117.5	37.5
101	117.5	42.5
102	117.5	47.5
103	117.5	52.5
104	117.5	57.5
105	122.5	22.5
106	122.5	27.5
107	122.5	32.5
108	122.5	37.5
109	122.5	42.5
110	122.5	47.5
111	122.5	52.5
112	122.5	57.5
113	127.5	27.5
114	127.5	32.5
115	127.5	37.5
116	127.5	42.5
117	127.5	47.5
118	127.5	52.5
119	127.5	57.5
120	132.5	32.5
121	132.5	42.5
122	132.5	47.5
123	132.5	52.5
124	132.5	57.5
125	137.5	37.5
126	137.5	47.5
127	137.5	52.5
128	137.5	57.5
129	142.5	37.5
130	142.5	42.5
131	142.5	47.5
132	142.5	52.5