Top 100 collaborations in Earth & Environmental Sciences

The table shows the top collaborating partners ranked by their bilateral collaboration score (CS) in Earth and environmental sciences for the three-year period from 2015 to 2017. The CS sums the fractional count of collaborative papers from the two partnering institutions. Also shown is the article count (AC) of collaborative articles from the two partnering institutions over the same period.

Rank	Institution	CS 2015–2017	Institution	CS 2015–2017	Bilateral CS 2015–2017	AC 2015–2017
1	Chinese Academy of Sciences (CAS), China	188.89	University of Chinese Academy of Sciences (UCAS), China	61.83	250.72	341
2	California Institute of Technology (Caltech), United States of America (USA)	93.85	National Aeronautics and Space Administration (NASA), United States of America (USA)	98.05	191.91	517
3	French National Centre for Scientific Research (CNRS), France	110.74	Institute of Research for Development (IRD), France	62.03	172.77	825
4	National Oceanic and Atmospheric Administration (NOAA), United States of America (USA)	83.62	University of Colorado Boulder (CU-Boulder), United States of America (USA)	64.06	147.68	354
5	Nanjing University (NJU), China	67.59	Tongji University, China	69.23	136.82	219
6	French National Centre for Scientific Research (CNRS), France	75.68	Paris Diderot University (Paris 7), France	56.15	131.83	331
7	French National Centre for Scientific Research (CNRS), France	63.90	Pierre and Marie Curie University (UPMC) - Paris 6, France	32.90	96.80	440
8	National Aeronautics and Space Administration (NASA), United States of America (USA)	58.37	University of Maryland, College Park (UMCP), United States of America (USA)	30.91	89.28	229
9	National Aeronautics and Space Administration (NASA), United States of America (USA)	46.63	University of Colorado Boulder (CU-Boulder), United States of America (USA)	42.38	89.01	249
10	Chinese Academy of Sciences (CAS), China	46.58	Peking University (PKU), China	37.33	83.91	233
11	Beijing Normal University (BNU), China	36.37	Chinese Academy of Sciences (CAS), China	41.14	77.51	184
12	Chinese Academy of Sciences (CAS), China	35.79	University of Science and Technology of China (USTC), China	36.25	72.04	120
13	National Aeronautics and Space Administration (NASA), United States of America (USA)	32.34	National Oceanic and Atmospheric Administration (NOAA), United States of America (USA)	39.47	71.81	194
14	Swiss Federal Institute of Aquatic Science and Technology (EAWAG), Switzerland	47.14	Swiss Federal Institute of Technology Zurich (ETH Zurich), Switzerland	24.64	71.78	111
15	National Aeronautics and Space Administration (NASA), United States of America (USA)	55.51	Universities Space Research Association (USRA), United States of America (USA)	9.44	64.95	154
16	Chinese Academy of Sciences (CAS), China	32.65	Tsinghua University (TH), China	30.97	63.62	164
17	National Aeronautics and Space Administration (NASA), United States of America (USA)	32.75	University of California Los Angeles (UCLA), United States of America (USA)	26.41	59.16	181
18	French National Centre for Scientific Research (CNRS), France	37.75	Grenoble Alpes University (UGA), France	21.23	58.98	240
19	Atomic Energy and Alternative Energies Commission (CEA), France	23.36	French National Centre for Scientific Research (CNRS), France	34.72	58.08	230
20	Johns Hopkins University (JHU), United States of America (USA)	17.98	National Aeronautics and Space Administration (NASA), United States of America (USA)	38.00	55.98	150
21	NERC National Oceanography Centre (NOC), United Kingdom (UK)	26.69	University of Southampton (Soton), United Kingdom (UK)	27.54	54.24	132
22	French National Centre for Scientific Research (CNRS), France	31.78	University of Lyon, France	21.65	53.43	179
23	France Ministry of Ecology, Sustainable Development and Energy, France	18.26	French National Centre for Scientific Research (CNRS), France	32.93	51.19	280
24	Lawrence Berkeley National Laboratory (LBNL), United States of America (USA)	24.00	University of California Berkeley (UC Berkeley), United States of America (USA)	24.02	48.02	77
25	National Aeronautics and Space Administration (NASA), United States of America (USA)	32.43	Science Systems and Applications, Inc. (SSAI), United States of America (USA)	15.41	47.84	85
26	École Normale Supérieure (ENS Paris), France	15.90	French National Centre for Scientific Research (CNRS), France	30.69	46.59	180
27	French National Centre for Scientific Research (CNRS), France	31.81	National Museum of Natural History (MNHN), France	13.96	45.77	184
28	National Aeronautics and Space Administration (NASA), United States of America (USA)	25.86	Southwest Research Institute (SwRI), United States of America (USA)	19.82	45.69	142
29	Centre National d’Etudes Spatiales (CNES), France	14.97	French National Centre for Scientific Research (CNRS), France	29.78	44.75	302
30	French National Centre for Scientific Research (CNRS), France	27.79	University of Toulouse, France	15.69	43.48	259
31	French National Centre for Scientific Research (CNRS), France	24.51	University of Lorraine (UL), France	18.76	43.28	116
32	Beijing Normal University (BNU), China	20.87	Tsinghua University (TH), China	22.26	43.13	129
33	Columbia University in the City of New York (CU), United States of America (USA)	24.96	National Aeronautics and Space Administration (NASA), United States of America (USA)	17.90	42.86	130
34	French National Centre for Scientific Research (CNRS), France	25.11	University of Versailles Saint-Quentin-en-Yvelines (UVSQ), France	16.31	41.41	226
35	French National Centre for Scientific Research (CNRS), France	26.24	University of Savoy, France	14.49	40.73	182
36	French National Centre for Scientific Research (CNRS), France	9.60	National Aeronautics and Space Administration (NASA), United States of America (USA)	30.27	39.87	197
37	Peking University (PKU), China	15.63	Tsinghua University (TH), China	24.08	39.71	135
38	Beijing Normal University (BNU), China	23.12	Peking University (PKU), China	16.57	39.69	134
39	National Aeronautics and Space Administration (NASA), United States of America (USA)	19.43	University of California Berkeley (UC Berkeley), United States of America (USA)	20.22	39.65	102
40	Chinese Academy of Sciences (CAS), China	19.56	Nanjing University (NJU), China	20.09	39.65	95
41	National Center for Atmospheric Research (NCAR), United States of America (USA)	21.20	University of Colorado Boulder (CU-Boulder), United States of America (USA)	18.36	39.56	90
42	French Institute of Science and Technology for Transport, Development and Networks (IFSTTAR), France	13.19	French National Centre for Scientific Research (CNRS), France	25.57	38.76	176
43	China Meteorological Administration (CMA), China	18.39	Chinese Academy of Sciences (CAS), China	19.84	38.23	87
44	National Oceanic and Atmospheric Administration (NOAA), United States of America (USA)	22.94	Princeton University, United States of America (USA)	14.77	37.71	79
45	China University of Geosciences (CUG), China	21.86	Chinese Academy of Sciences (CAS), China	14.88	36.74	62
46	National Aeronautics and Space Administration (NASA), United States of America (USA)	16.13	National Center for Atmospheric Research (NCAR), United States of America (USA)	20.17	36.30	95
47	French National Centre for Scientific Research (CNRS), France	23.18	French National Institute for Agricultural Research (INRA), France	12.91	36.09	148
48	Helmholtz Association of German Research Centres, Germany	18.86	Max Planck Society, Germany	16.90	35.76	122
49	French National Centre for Scientific Research (CNRS), France	11.12	Helmholtz Association of German Research Centres, Germany	24.59	35.70	147
50	National Center for Atmospheric Research (NCAR), United States of America (USA)	18.39	National Oceanic and Atmospheric Administration (NOAA), United States of America (USA)	17.17	35.55	95
51	University of California Berkeley (UC Berkeley), United States of America (USA)	17.51	University of Colorado Boulder (CU-Boulder), United States of America (USA)	17.80	35.31	92
52	Swiss Federal Institute of Aquatic Science and Technology (EAWAG), Switzerland	21.72	Swiss Federal Institute of Technology in Lausanne (EPFL), Switzerland	13.41	35.13	63
53	Helmholtz Association of German Research Centres, Germany	22.88	University of Bremen (Uni Bremen), Germany	11.96	34.85	72
54	California Institute of Technology (Caltech), United States of America (USA)	17.43	University of California Los Angeles (UCLA), United States of America (USA)	17.03	34.46	110
55	National Oceanic and Atmospheric Administration (NOAA), United States of America (USA)	14.63	University of Washington (UW), United States of America (USA)	19.47	34.10	76
56	Helmholtz Association of German Research Centres, Germany	20.46	University of Potsdam, Germany	12.76	33.22	55
57	Grenoble Alpes University (UGA), France	15.86	Institute of Research for Development (IRD), France	16.98	32.84	196
58	Aix-Marseille University (AMU), France	11.27	French National Centre for Scientific Research (CNRS), France	21.21	32.48	121
59	Helmholtz Association of German Research Centres, Germany	23.61	University of Kiel (CAU), Germany	8.52	32.13	51
60	Massachusetts Institute of Technology (MIT), United States of America (USA)	11.66	Woods Hole Oceanographic Institution (WHOI), United States of America (USA)	20.07	31.73	58
61	French National Centre for Scientific Research (CNRS), France	18.44	University of Strasbourg, France	12.98	31.42	84
62	Institute of Research for Development (IRD), France	15.42	Pierre and Marie Curie University (UPMC) - Paris 6, France	15.86	31.28	210
63	French National Centre for Scientific Research (CNRS), France	20.10	University Clermont Auvergne, France	11.02	31.12	123
64	KTH Royal Institute of Technology, Sweden	10.06	Stockholm University, Sweden	21.05	31.12	95
65	National Aeronautics and Space Administration (NASA), United States of America (USA)	24.86	University of Maryland, Baltimore County (UMBC), United States of America (USA)	6.25	31.11	79
66	Stockholm University, Sweden	20.48	Swedish Meteorological and Hydrological Institute (SMHI), Sweden	10.10	30.58	89
67	Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Japan	14.14	The University of Tokyo (UTokyo), Japan	16.36	30.50	58
68	California Institute of Technology (Caltech), United States of America (USA)	19.85	French National Centre for Scientific Research (CNRS), France	10.08	29.93	122
69	Morgan State University, United States of America (USA)	1.97	National Aeronautics and Space Administration (NASA), United States of America (USA)	27.64	29.61	64
70	Helmholtz Association of German Research Centres, Germany	14.68	Swiss Federal Institute of Technology Zurich (ETH Zurich), Switzerland	14.91	29.59	73
71	Chinese Academy of Sciences (CAS), China	16.15	Nanjing University of Information Science and Technology (NUIST), China	12.97	29.12	64
72	National Aeronautics and Space Administration (NASA), United States of America (USA)	14.55	University of Wisconsin-Madison (UW-Madison), United States of America (USA)	14.08	28.64	72
73	French National Centre for Scientific Research (CNRS), France	17.51	University of Montpellier, France	10.57	28.09	121
74	Institute of Research for Development (IRD), France	14.83	University of Savoy, France	13.18	28.01	173
75	Chinese Academy of Sciences (CAS), China	20.72	French National Centre for Scientific Research (CNRS), France	7.28	28.00	88
76	Free University of Berlin (FU Berlin), Germany	8.85	Helmholtz Association of German Research Centres, Germany	19.13	27.97	55
77	Grenoble Alpes University (UGA), France	13.99	University of Savoy, France	13.36	27.34	174
78	French Institute of Science and Technology for Transport, Development and Networks (IFSTTAR), France	12.54	Institute of Research for Development (IRD), France	14.78	27.31	170
79	France Ministry of Ecology, Sustainable Development and Energy, France	12.30	Institute of Research for Development (IRD), France	14.84	27.14	237
80	National Aeronautics and Space Administration (NASA), United States of America (USA)	9.08	University of California Irvine (UCI), United States of America (USA)	18.02	27.09	65
81	Atomic Energy and Alternative Energies Commission (CEA), France	13.58	University of Versailles Saint-Quentin-en-Yvelines (UVSQ), France	13.50	27.08	163
82	French National Centre for Scientific Research (CNRS), France	4.21	University of Colorado Boulder (CU-Boulder), United States of America (USA)	22.68	26.89	116
83	Institute of Research for Development (IRD), France	14.32	University of Toulouse, France	12.43	26.75	236
84	China Meteorological Administration (CMA), China	12.66	Nanjing University of Information Science and Technology (NUIST), China	14.01	26.67	48
85	I.M. Systems Group, Inc. (IMSG), United States of America (USA)	2.23	National Aeronautics and Space Administration (NASA), United States of America (USA)	23.68	25.91	59
86	French Institute of Science and Technology for Transport, Development and Networks (IFSTTAR), France	12.46	Grenoble Alpes University (UGA), France	13.26	25.72	168
87	National Aeronautics and Space Administration (NASA), United States of America (USA)	13.77	The University of Iowa (UI), United States of America (USA)	11.91	25.68	72
88	Centre National d’Etudes Spatiales (CNES), France	11.37	Institute of Research for Development (IRD), France	14.30	25.68	233
89	National Museum of Natural History (MNHN), France	12.16	Pierre and Marie Curie University (UPMC) - Paris 6, France	13.32	25.48	160
90	National Oceanic and Atmospheric Administration (NOAA), United States of America (USA)	16.23	University of Maryland, College Park (UMCP), United States of America (USA)	8.88	25.11	63
91	French Institute of Science and Technology for Transport, Development and Networks (IFSTTAR), France	12.46	University of Savoy, France	12.61	25.07	168
92	French National Centre for Scientific Research (CNRS), France	15.80	University of Western Brittany (UBO), France	8.44	24.24	96
93	Ball Corporation, United States of America (USA)	0.94	National Aeronautics and Space Administration (NASA), United States of America (USA)	23.15	24.09	55
93	National Aeronautics and Space Administration (NASA), United States of America (USA)	23.15	The Institute for Global Environmental Strategies, United States of America (USA)	0.94	24.09	55
94	Institute of Research for Development (IRD), France	12.58	National Museum of Natural History (MNHN), France	11.27	23.84	161
95	Helmholtz Association of German Research Centres, Germany	13.39	Leibniz Association, Germany	10.11	23.51	88
96	Centre National d’Etudes Spatiales (CNES), France	11.25	France Ministry of Ecology, Sustainable Development and Energy, France	12.13	23.37	230
97	National Aeronautics and Space Administration (NASA), United States of America (USA)	12.53	University of Michigan (U-M), United States of America (USA)	10.68	23.21	73
98	France Ministry of Ecology, Sustainable Development and Energy, France	11.60	University of Toulouse, France	11.56	23.16	227
99	California Institute of Technology (Caltech), United States of America (USA)	7.20	University of California Irvine (UCI), United States of America (USA)	15.77	22.97	56
100	National Aeronautics and Space Administration (NASA), United States of America (USA)	15.77	University of New Hampshire (UNH), United States of America (USA)	7.16	22.94	68