Barry og Chorley, side 340. Alisovs system er illustrert og kortfattet kommentert på nettforumet City-Data.com, besøkt 17. september 2017 og lagret på Wayback Machine samme dag.
Schwartz, M.D. (1995). «Detecting Structural Climate Change: An Air Mass-Based Approach in the North Central United States, 1958–1992». Annals of the Association of American Geographers. 85 (3): 553–568. doi:10.1111/j.1467-8306.1995.tb01812.x.
Definisjon fra Annex III: GlossaryArkivert 24. mai 2016 hos Wayback Machine. til Klimapanelets femte synteserapport (Climate Change 2013. The Physical Science Basis. Working Group I Contribution to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change), Cambridge University Press 2013, ISBN 978-1-107-05799-1. «Climate in a narrow sense is usually defined as the average weather, or more rigorously, as the statistical description in terms of the mean and variability of relevant quantities over a period of time ranging from months to thousands or millions of years. The classical period for averaging these variables is 30 years, as defined by the World Meteorological Organization. The relevant quantities are most often surface variables such as temperature, precipitation and wind. Climate in a wider sense is the state, including a statistical description, of the climate system.» Besøkt 25. juli 2017.
Aforismen finnes i Robert Heinleins roman Time enough for love fra 1973. Den er av noen tillagt Mark Twain. Formuleringen hos ham er imidlertid noe annerledes: «Climate lasts all the time and weather only a few days.» («Klimaet varer hele tiden, været bare noen dager.») For nærmere omtale, se oppslag hos Quote Investigator; besøkt 26. juli 2017.
Definisjon fra Annex III: GlossaryArkivert 24. mai 2016 hos Wayback Machine. til Klimapanelets femte synteserapport (Climate Change 2013. The Physical Science Basis. Working Group I Contribution to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change), Cambridge University Press 2013, ISBN 978-1-107-05799-1. «Climate in a narrow sense is usually defined as the average weather, or more rigorously, as the statistical description in terms of the mean and variability of relevant quantities over a period of time ranging from months to thousands or millions of years. The classical period for averaging these variables is 30 years, as defined by the World Meteorological Organization. The relevant quantities are most often surface variables such as temperature, precipitation and wind. Climate in a wider sense is the state, including a statistical description, of the climate system.» Besøkt 25. juli 2017.
Barry og Chorley, side 340. Alisovs system er illustrert og kortfattet kommentert på nettforumet City-Data.com, besøkt 17. september 2017 og lagret på Wayback Machine samme dag.
