Leading 25 science cities in Earth & environmental sciences

The leading 25 science cities and metropolitan areas in Earth & environmental sciences ranked by article Share (Share) in the subject in 2021. Also listed are each city’s article count (Count) in Earth & environmental sciences in 2021, and its contritution to the location’s total subject Share of the year.

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Rank	City/metropolitan area	Location	Share 2021	Count 2021	Contribution to location's Share (%)
1	Beijing	China mainland	586.44	1,318	29.1%
2	Nanjing	China mainland	253.17	564	12.6%
3	Baltimore - Washington	United States of America (USA)	221.51	722	8.1%
4	New York metropolitan area	United States of America (USA)	218.83	612	8.0%
5	San Francisco Bay Area	United States of America (USA)	181.92	493	6.6%
6	Guangzhou	China mainland	173.15	448	8.6%
7	Los Angeles metropolitan area	United States of America (USA)	154.40	436	5.6%
8	Wuhan	China mainland	139.73	315	6.9%
9	Shanghai	China mainland	132.39	342	6.6%
10	Boston metropolitan area	United States of America (USA)	131.32	431	4.8%
11	Paris metropolitan area	France	124.30	393	37.9%
12	Zürich	Switzerland	122.19	311	62.1%
13	Boulder	United States of America (USA)	117.55	371	4.3%
14	Tokyo metropolitan area	Japan	111.42	285	43.3%
15	Hangzhou	China mainland	73.17	175	3.6%
16	London metropolitan area	United Kingdom (UK)	72.55	255	14.9%
17	Berlin metropolitan area	Germany	69.05	222	15.3%
18	San Diego metropolitan area	United States of America (USA)	68.66	192	2.5%
19	Hong Kong	China mainland	68.14	199	3.4%
20	Seattle metropolitan area	United States of America (USA)	67.63	235	2.5%
21	Sydney	Australia	66.10	181	23.2%
22	Hefei	China mainland	54.75	161	2.7%
23	Atlanta metropolitan area	United States of America (USA)	52.62	162	1.9%
24	Qingdao	China mainland	51.80	160	2.6%
25	Melbourne	Australia	51.59	172	18.1%