Using Journal Citation Reports- A Quick Guide
Journal Citation Reports (JCR) Science Edition is available NOAA-wide and allows you to evaluate and compare
journals using citation data drawn from 5,928 journals in 171 subject areas in the science field. JCR can show you:
- Most frequently cited journals in a field
- Highest impact journals in a field
- Largest journals in a field
Download this guide in printable .pdf format here. You may need to download
download the free Adobe Acrobat Reader from Adobe Systems
Inc. to view the .pdf file.
NOAA scientists and researchers can access MGA from their workstation desktops.
- From the library homepage at http://lib.ncep.noaa.gov, select “Databases and Electronic
Resources” from the left-hand menu.
- Scroll down to “Journal Citation Reports” and click on this link.
To compare all journals in a specific subject area
- From the JCR homepage, select the option to “View a group of journals by subject category” and click submit.
- Highlight the subject area that you are interested in (to select more than one category, use Ctrl-click for Windows or
Command-click for Macintosh) and click submit. This will give you a listing.
- Click on journal name for more information about that specific title, including publication information and journal source data.
A guide to terms:
- Total cites:
- total number of citations to this journal in 2006
- Impact factor:
- the number of citations in 2006 to items published in the previous 2 years divided by the total number of
articles & reviews published in the previous 2 years.
- Immediacy index:
- how often articles published in a journal are cited during their year of publication, can be an
indication of how “hot” a journal is.
- Cited Half Life:
- median age of articles in this journal that were cited in 2004
- Citing Half Life:
- median age of articles cited by the selected journal in its article references