Top 25 science cities in Earth & environmental sciences

The table shows the top 25 science cities and metropolitan areas in Earth & environmental sciences ranked by article Share (Share) in the subject in 2019. Also shown are each city’s article count (Count) in Earth & environmental sciences in 2019, and its contritution to the region’s total subject Share of the year.

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#Rank	City/metropolitan area	Region	Share 2019	Count 2019	Contribution to region's Share* (%)
1	Beijing	Mainland China	493.73	1,053	30.3%
2	Baltimore-Washington	United States of America (USA)	217.02	649	7.6%
3	New York metropolitan area	United States of America (USA)	208.92	585	7.3%
4	Nanjing	Mainland China	194.94	413	12.0%
5	San Francisco-San Jose	United States of America (USA)	192.30	520	6.7%
6	Los Angeles metropolitan area	United States of America (USA)	162.03	469	5.7%
7	Boulder	United States of America (USA)	138.66	436	4.8%
8	Boston metropolitan area	United States of America (USA)	131.94	414	4.6%
9	Wuhan	Mainland China	129.67	282	8.0%
10	Zürich	Switzerland	129.10	295	58.9%
11	Tokyo metropolitan area	Japan	119.85	299	41.8%
12	Paris metropolitan area	France	115.69	376	34.3%
13	Guangzhou	Mainland China	112.19	291	6.9%
14	Shanghai	Mainland China	97.17	244	6.0%
15	Seattle metropolitan area	United States of America (USA)	75.28	216	2.6%
16	Berlin metropolitan area	Germany	72.97	203	17.0%
17	London metropolitan area	United Kingdom (UK)	71.37	252	13.3%
18	Hong Kong	Hong Kong	66.81	161	4.1%
19	Melbourne	Australia	63.13	190	21.0%
20	Hangzhou	Mainland China	59.05	144	3.6%
21	Hefei	Mainland China	58.61	137	3.6%
22	Sydney	Australia	58.01	192	19.3%
23	Toronto metropolitan area	Canada	57.34	138	18.9%
24	Seoul metropolitan area	South Korea	53.05	122	55.1%
25	Cambridge	United Kingdom (UK)	51.59	166	9.6%

Footnote

*When calculating the contribution for Mainland China cities and Hong Kong, their combined region output is used.