Top institutions in geosciences

	Institution	Papers	Citations	Citations per paper
1	Met Office Hadley Centre for Climate Prediction and Research	313	10,865	34.71
2	Harvard University	1,248	31,735	25.43
3	Lawrence Livermore National Laboratory	924	22,487	24.34
4	Princeton University	1,181	,315	23.13
5	University of East Anglia	817	18,833	23.05
6	National Center for Atmospheric Research	3,060	67,300	21.99
7	European Centre for Medium-Range Weather Forecasts	502	10,907	21.73
8	Max Planck Society	2,798	59,103	21.12
9	National Oceanography Centre, Southampton	576	11,6	20.19
%3D10	University of Washington	2,973	59,935	20.16
%3D10	University of California, Santa Barbara	1,020	20,560	20.16
12	CEA Saclay (Commission for Atomic Research)	1,101	21,843	19.84
13	University of Miami	1,102	21,810	19.79
14	Columbia University	2,399	47,048	19.61
15	Woods Hole Oceanographic Institution	2,214	42,601	19.24
16	Carnegie Institution for Science	850	16,308	19.19
17	National Oceanic and Atmospheric Administration	4,375	82,558	18.87
18	University of California, Santa Cruz	889	16,666	18.75
19	California Institute of Technology	1,935	36,149	18.68
20	Massachusetts Institute of Technology	1,929	35,978	18.65

The data above were extracted from the Essential Science Indicators database of Thomson Reuters. This database, currently covering the period January 1999 through June 2009, surveys only journal articles (original research reports and review articles) indexed by Thomson Reuters. Articles are assigned to a category based on the journals in which they were published and the Thomson Reuters journal-to-category field-definition scheme. Both articles tabulated and citation counts to those articles are for the period indicated. Naturally, institutions publishing large numbers of papers have a greater likelihood of collecting more citations than those publishing fewer papers.

This ranking is by citations per paper (impact), among those institutions that have collected 10,000 or more citations in geosciences during the period. For papers with multiple institutional addresses, each institution receives full, not fractional, citation credit. Essential Science Indicators lists institutions ranked in the top

1 per cent for a field over a given period, based on total citations. For the current version, 435 institutions are listed in the field of geosciences, meaning that a total of 43,500 institutions were surveyed to obtain these results. Of the 435, 104 institutions collected 10,000 or more citations. The ranking by citations per paper (impact) seeks to reveal “heavy-hitters” based on per paper influence, not mere output. US institutions account for 14 of the 20, while the other six are European, including three British institutions. As is plain from the list above, “geosciences” here includes atmospheric research and oceanography as well as geology.

For more information on the Thomson Reuters’ Essential Science Indicators database, see http://scientific.thomsonreuters.com/products/esi.