2021 tables: Institutions - physical sciences - academic

The 2021 tables are based on Nature Index data from 1 January 2020 to 31 December 2020.

Table criteria

# Institution Share 2019 Share 2020 Count 2020 Change in Adjusted Share 2019-2020*
1 Autonomous University of Madrid (UAM), Spain 34.25 36.36 246 -1.2%
2 University of Barcelona (UB), Spain 29.84 33.13 176 3.3%
3 University of the Basque Country (UPV/EHU), Spain 20.13 26.23 132 21.3%
4 University of Valencia (UV), Spain 22.79 23.06 203 -5.8%
5 Complutense University of Madrid (UCM), Spain 12.50 16.42 64 22.2%
6 University of Oviedo (UniOvi), Spain 7.97 12.08 92 41.2%
7 University of Santiago de Compostela (USC), Spain 13.00 11.87 88 -15.0%
8 University of La Laguna (ULL), Spain 8.46 9.70 66 6.8%
9 Polytechnic University of Catalonia (UPC), Spain 7.93 9.27 66 8.8%
10 Autonomous University of Barcelona (UAB), Spain 9.51 8.12 91 -20.5%
11 University of Salamanca (USAL), Spain 5.94 6.66 18 4.4%
12 University of Granada (UGR), Spain 9.46 6.55 73 -35.5%
13 University of Zaragoza (Unizar), Spain 8.45 5.92 30 -34.8%
14 Charles III University of Madrid (UC3M), Spain 2.46 4.35 10 64.3%
15 Rovira i Virgili University (URV), Spain 1.62 3.95 12 127.1%
16 University of Vigo (UVIGO), Spain 2.38 3.46 11 35.4%
17 University of Alicante (UA), Spain 1.33 2.54 10 78.1%
18 University of Castilla-La Mancha (UCLM), Spain 0.87 2.52 14 169.0%
19 Polytechnic University of Valencia (UPV), Spain 4.52 2.43 9 -49.9%
20 University of Valladolid (UVa), Spain 1.25 2.35 7 74.7%
21 Technical University of Madrid (UPM), Spain 4.47 2.24 14 -53.4%
22 University of the Balearic Islands (UIB), Spain 3.20 2.17 15 -37.0%
23 University of Murcia (UMU), Spain 1.42 1.74 8 13.9%
24 University of Cantabria (UC), Spain 2.15 1.45 66 -37.1%
25 University of Alcalá (UAH), Spain 0.83 1.35 8 51.2%
26 University of Seville (US), Spain 5.05 1.26 18 -76.8%
27 Jaume I University (UJI), Spain 0.67 1.25 5 73.2%
28 Pompeu Fabra University (UPF), Spain 0.33 1.02 14 187.5%
29 Pablo de Olavide University (UPO), Spain 0.33 0.95 4 172.1%
30 University of Málaga (UMA), Spain 1.38 0.89 10 -40.1%
31 Technical University of Cartagena (UPCT), Spain 0.17 0.79 2 343.5%
32 University of Huelva (UHU), Spain 0.20 0.71 4 239.3%
33 University of A Coruña (UDC), Spain 0.10 0.64 3 492.9%
34 University of La Rioja (UR), Spain 0.57 2 N/A
35 University of Lleida (UDL), Spain 0.50 1 N/A
36 University of Cádiz (UCA), Spain 0.70 0.47 4 -38.4%
37 Public University of Navarre (UPNA), Spain 1.00 0.39 3 -63.6%
38 University of Extremadura (UEx), Spain 0.66 0.34 3 -52.6%
39 University of Navarra (UNAV), Spain 0.67 0.33 2 -54.6%
40 University of Almeria (UAL), Spain 0.30 0.32 7 1.0%
41 Ramon Llull University (URL), Spain 0.14 0.25 19 68.2%
42 Comillas Pontifical University (UPCO), Spain 0.18 0.23 1 19.0%
43 University of Girona (UdG), Spain 0.17 0.23 4 22.9%
44 King Juan Carlos University (URJC), Spain 0.10 0.20 2 86.2%
45 Miguel Hernández University of Elche (UMH), Spain 0.07 0.17 2 125.0%
46 Barcelona Graduate School of Economics (Barcelona GSE), Spain 0.08 1 N/A
47 HM Hospitales, Spain 0.07 1 N/A
48 University of León (ULE), Spain 0.07 1 N/A
49 University of Cordoba (UCO), Spain 0.04 1 N/A
50 University of Vic - Central University of Catalonia (UVic-UCC), Spain 0.06 0.04 2 -27.5%
51 University of Las Palmas de Gran Canaria (ULPGC), Spain 0.25 0.04 1 -86.9%

Footnote

Each year, the Nature Index publishes tables based on counts of high-quality research outputs in the previous calendar year. Users please note:

  1. The data behind the tables are based on a relatively small proportion of total research papers, they cover the natural sciences only and outputs are non-normalized (that is, they don’t reflect the size of the country or institution, or its overall research output).
  2. The Nature Index is one indicator of institutional research performance. The metrics of Count and Share used to order Nature Index listings are based on an institution’s or country’s publication output in 82 natural-science journals, selected on reputation by an independent panel of leading scientists in their fields.
  3. Nature Index recognizes that many other factors must be taken into account when considering research quality and institutional performance; Nature Index metrics alone should not be used to assess institutions or individuals.
  4. Nature Index data and methods are transparent and available under a creative commons licence at natureindex.com.

The Nature Index database undergoes regular updating, corrections, adjustment of institutional hierarchies, and removal of retracted papers and thus the live website can differ from the frozen annual tables.

*The change in adjusted Share accounts for the small annual variation in the total number of articles in Nature Index journals. Share values have been adjusted to 2020 levels to calculate the percentage change. For more information on the adjustment, please see the Adjusted metric explainer.